National Toxicology Program (NTP); Report on Carcinogens; Status of Nominations to the 12th Report on Carcinogens (RoC): Request for Comments and Nominations of Scientific Experts, 60548-60554 [05-20729]

Download as PDF 60548 Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / Notices Name of Committee: Center for Scientific Review Special Emphasis Panel, Adolescent Depression. Date: October 28, 2005. Time: 12 p.m. to 1 p.m. Agenda: To review and evaluate grant applications. Place: Bethesda Marriott Suites, 6711 Democracy Boulevard, Bethesda, MD 20817. Contact Person: Karen Sirocco, PhD, Scientific Review Administrator, Center for Scientific Review, National Institutes of Health, 6701 Rockledge Drive, Room 3176, MSC 7848, Bethesda, MD 20892, 301–435– 0676, siroccok@csr.nih.gov. Name of Committee: Center for Scientific Review Special Emphasis Panel, Epigenetic Changes in Mouse Skin Tumor Susceptibility. Date: October 28, 2005. Time: 12 p.m. to 1:30 p.m. Agenda: To review and evaluate grant applications. Place: National Institutes of Health, 6701 Rockledge Drive, Bethesda, MD 20892, (Telephone Conference Call). Contact Person: Elaine Sierra-Rivera, PhD, Scientific Review Administrator, Center for Scientific Review, National Institutes of Health, 6701 Rockledge Drive, Room 6184, MSC 7804, Bethesda, MD 20892, 301–435– 1779, riverase@csr.nih.gov. Name of Committee: Musculoskeletal, Oral and Skin Sciences Integrated Review Group, Musculoskeletal Tissue Engineering Study Section. Date: October 31–November 1, 2005. Time: 8 a.m. to 5 p.m. Agenda: To review and evaluate grant applications. Place: Hyatt Regency Bethesda, One Bethesda Metro Center, 7400 Wisconsin Avenue, Bethesda, MD 20814. Contact Person: Jean Dow Sipe, PhD, Scientific Review Administrator, Center for Scientific Review, National Institutes of Health, 6701 Rockledge Drive, Room 4106, MSC 7814, Bethesda, MD 20892, 301–435– 1743, sipej@csr.nih.gov. Name of Committee: Center for Scientific Review Special Emphasis Panel, Conflicts in Biological Chemistry and Macromolecular Biophysics. Date: October 31, 2005. Time: 8 a.m. to 5 p.m. Agenda: To review and evaluate grant applications. Place: Holiday Inn Select Bethesda, 8120 Wisconsin Ave., Bethesda, MD 20814. Contact Person: Donald L. Schneider, PhD, Scientific Review Administrator, Center for Scientific Review, National Institutes of Health, 6701 Rockledge Drive, Room 4172, MSC 7806, Bethesda, MD 20892, (301) 435– 1727, schneidd@csr.nih.gov. Name of Committee: Center for Scientific Review Special Emphasis Panel, F–13 Fellowship. Date: October 31–November 1, 2005. Time: 8 a.m. to 5 p.m. Agenda: To review and evaluate grant applications. and/or proposals. Place: The Watergate, 2650 Virginia Avenue, NW., Washington, DC 20037. Contact Person: John C. Pugh, PHD, Scientific Review Administrator, Center for VerDate Aug<31>2005 17:22 Oct 17, 2005 Jkt 208001 Scientific Review, National Institutes of Health, 6701 Rockledge Drive, Room 3114, MSC 7808, Bethesda, MD 20892, (301) 435– 2398, pughjohn@csr.nih.gov. Name of Committee: Center for Scientific Review Special Emphasis Panel, Cancer Diagnostic and Treatment SBIR/STTR. Date: October 31–November 1, 2005. Time: 8 a.m. to 5 p.m. Agenda: To review and evaluate grant applications. Place: Hyatt Regency Bethesda, One Bethesda Metro Center, 7400 Wisconsin Avenue, Bethesda, MD 20814. Contact Person: Hungyi Shau, PHD, Scientific Review Administrator, Center for Scientific Review, National Institutes of Health, 6701 Rockledge Drive, Room 6214, MSC 7804, Bethesda, MD 20892, 301–435– 1720, shauhung@csr.nih.gov. Name of Committee: Oncological Sciences Integrated Review Group, Radiation Therapeutics and Biology Study Section. Date: October 31–November 1, 2005. Time: 8:30 a.m. to 5 p.m. Agenda: To review and evaluate grant applications. Place: Hyatt Regency Bethesda, One Bethesda Metro Center, 7400 Wisconsin Avenue, Bethesda, MD 20814. Contact Person: Bo Hong, PHD, Scientific Review Administrator, Center for Scientific Review, National Institutes of Health, 6701 Rockledge Drive, Room 6194, MSC 7804, Bethesda, MD 20892, 301–435–5879, hongb@csr.nih.gov. Name of Committee: Bioengineering Sciences & Technologies Integrated Review Group, Modeling and Analysis of Biological Systems Study Section. Date: October 31–November 1, 2005 Time: 8:30 a.m. to 5 p.m. Agenda: To review and evaluate grant applications. Place: Hyatt Regency Bethesda, One Bethesda Metro Center, 7400 Wisconsin Avenue, Bethesda, MD 20814. Contact Person: Malgorzata Klosek, Scientific Review Administrator, Center for Scientific Review, National Institutes of Health, 6701 Rockledge Drive, Room 4188, MSC 7849, Bethesda, MD 20892, (301) 435– 2211, klosekm@mail.nih.gov. Name of Committee: Center for Scientific Review Special Emphasis Panel, Drug Discovery and Development SBIR/STTR Date: October 31, 2005. Time: 8:30 a.m. to 6 p.m. Agenda: To review and evaluate grant applications. Place: One Washington Circle Hotel, One Washington Circle, Washington, DC 20037 Contact Person: Sergei Ruvinov, PHD, Scientific Review Administrator, Center for Scientific Review, National Institutes of Health, 6701 Rockledge Drive, Room 4158, MSC 7806, Bethesda, MD 20892, 301–435– 1180, ruvinser@csr.nih.gov. Name of Committee: Center for Scientific Review Special Emphasis Panel, Member Conflict: Surgery, Anesthesiology, and Trauma. Date: October 31, 2005. Time: 2 p.m. to 4 p.m. Agenda: To review and evaluate grant applications. PO 00000 Frm 00064 Fmt 4703 Sfmt 4703 Place: National Institutes of Health, 6701 Rockledge Drive, Bethesda, MD 20892, (Telephone Conference Call). Contact Person: Roberto J. Matus, MD, Scientific Review Administrator, Center for Scientific Review, National Institutes of Health, 6701 Rockledge Drive, Room 5108, MSC 7854, Bethesda, MD 20892, 301–435– 2204, matusr@csr.nih.gov. (Catalogue of Federal Domestic Assistance Program Nos. 93.306, Comparative Medicine; 93.333, Clinical Research, 93.306, 93.333, 93.337, 93.393–93.396, 93.837–93.844, 93.846– 93.878, 93.892, 93.893, National Institutes of Health, HHS) Dated: October 6, 2005. Anthony M. Coelho, Jr., Acting Director, Office of Federal Advisory Committee Policy. [FR Doc. 05–20739 Filed 10–17–05; 8:45 am] BILLING CODE 4140–01–M DEPARTMENT OF HEALTH AND HUMAN SERVICES National Institutes of Health Center for Scientific Review; Amended Notice of Meeting Notice is hereby given of a change in the meeting of the Center for Scientific Review Special Emphasis Panel, October 17, 2005, 1 p.m. to October 17, 2005, 2 p.m., National Institutes of Health, 6701 Rockledge Drive, Bethesda, MD 20892 which was published in the Federal Register on September 30, 2005, 70 FR 57304–57305. The meeting will be held on October 13, 2005. The meeting time and location remain the same. The meeting is closed to the public. Dated: October 6, 2005. Anthony M. Coelho, Jr., Acting Director, Office of Federal Advisory Committee Policy. [FR Doc. 05–20740 Filed 10–17–05; 8:45 am] BILLING CODE 4140–01–M DEPARTMENT OF HEALTH AND HUMAN SERVICES National Institutes of Health National Toxicology Program (NTP); Report on Carcinogens; Status of Nominations to the 12th Report on Carcinogens (RoC): Request for Comments and Nominations of Scientific Experts National Institute of Environmental Sciences (NIEHS), National Institutes of Health (NIH), HHS. AGENCY: E:\FR\FM\18OCN1.SGM 18OCN1 60549 Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / Notices Request for Comments and Nominations of Scientific Experts. ACTION: SUMMARY: The NTP invites public comments on an updated list of nominations proposed for review in the 12th RoC and the nomination of scientists who have expertise and/or knowledge relevant to the evaluation of carcinogenicity for these nominations (see SUPPLEMENTARY INFORMATION). Information on the nominations under consideration for the RoC can be obtained at the NTP Web site https:// ntp.niehs.nih.gov (select ‘‘Report on Carcinogens’’) or by contacting Dr. C.W. Jameson at the address provided below. DATES: Comments and nominations will be accepted until November 17, 2005. ADDRESSES: All correspondence should be directed to Dr. C. W. Jameson, National Toxicology Program, Report on Carcinogens, 79 Alexander Drive, Building 4401, Room 3118, P.O. Box 12233, Research Triangle Park, NC 27709; phone: (919) 541–4096, fax: (919) 541–0144, e-mail: jameson@niehs.nih.gov. SUPPLEMENTARY INFORMATION: Background This notice provides an update on the current status of and/or additions to the list of nominations identified in earlier Federal Register notices relevant to the 12th RoC [69FR28940 (May 19, 2004) and 69FR62276 (October 25, 2004)]. All but the newly identified nomination of formaldehyde were announced in earlier Federal Register notices. Any additional nominations for the 12th RoC or modifications to the nominations in the attached table will be announced in future Federal Register notices. Request for Comments on Nominations to the RoC The following table identifies the nominations that the NTP has under consideration for review as either a new listing in the RoC or as a change in the current listing. These nominations are provided with their Chemical Abstracts Services (CAS) Registry numbers (where available) and pending review action. The NTP solicits public input on these nominations and asks for relevant information concerning their carcinogenicity as well as current data on production, patterns of use, or human exposure. The NTP also invites interested parties to identify any scientific issues related to the listing of a specific nomination in the RoC that they feel should be addressed during the reviews. Individuals who submitted comments in response to the May 19, 2004 Federal Register (69FR28940) and/ or the October 25, 2004 Federal Register notice (69FR62276) need not re-submit their comments as they are already part of the public record. Individuals submitting public comments are asked to include relevant contact information [name, affiliation (if any), address, telephone, fax, and e-mail] and sponsoring organization, if applicable. Written submissions will be made available on the NTP Web site as they are received (https://ntp.niehs.nih.gov/ select ‘‘Report on Carcinogens’’) and added to the public record. Request for Nominations of Scientific Experts The NTP solicits nominations of scientists who have expertise and/or knowledge relevant to the evaluation of carcinogenicity for the selected nominations. These scientists should have expertise in various aspects of toxicology, epidemiology, carcinogenesis, or other relevant areas of science (e.g., genetic toxicity, metabolism, etc.) and/or experience with the agent being reviewed. The experts may be used to write and/or review the background documents prepared on selected nominations. Nominations of scientists should include contact information for the nominee [name, affiliation (if any), address, telephone, fax, and e-mail], the specific nominated agent(s) (listed in the table below) for which they are being recommended as an expert, and a curriculum vitae (if possible). Contact information for the nominator must also be provided. Additional Nominations Encouraged The NTP solicits and encourages the broadest participation from interested individuals or parties in nominating agents, substances, or mixtures for review for future RoCs. Nominations should contain a rationale for review. Appropriate background information and relevant data [e.g., journal articles, NTP Technical Reports, International Agency for Research on Cancer (IARC) listings, exposure surveys, release inventories, etc.] that support the review of a nomination should be provided or referenced when possible. Contact information for the nominator should also be included [name, affiliation (if any), address, telephone, fax, and email]. Background Information on the Report on Carcinogens The RoC is a congressionally mandated document [Section 301(b)(4) of the Public Health Services Act, 42 U.S.C. 241(b)(4)], published by the Secretary of Health and Human Services (HHS), that identifies agents, substances, mixtures, or exposure circumstances (collectively referred to as ‘‘substances’’) that may pose a carcinogenic hazard to human health. The Secretary, HHS, has delegated responsibility for preparing the draft report to the NTP. Substances are listed in the RoC as either known to be a human carcinogen or reasonably anticipated to be a human carcinogen. Review of nominations (substances that are under consideration for listing or removing from the RoC) involves a multi-step scientific review process with opportunity for public comment. Dated: October 6, 2005. Samuel H. Wilson, Deputy Director, National Institute of Environmental Health Sciences. STATUS OF NOMINATIONS TO BE REVIEWED FOR THE REPORT ON CARCINOGENS Nomination/CAS No. 1 Herbal remedies containing aristolochic acid. *Note—this nomination was previously identified as ‘‘Aristolochia-Related Herbal Remedies’’. VerDate Aug<31>2005 Primary uses or exposures Nominator Basis for nomination Status Several Aristolochia species (notably A. contorta, A. debilis, A. fangchi and A. manshuriensis) have been used in traditional Chinese medicine as antirheumatics, as diuretics, in the treatment of edema, and for other conditions such as hemorrhoids, coughs, and asthma. NIEHS ............................... Herbal remedies containing the plant genus Aristolochia: IARC 2 finding of sufficient evidence of carcinogenicity in humans (IARC Monograph Vol. 82, 2002). Review for possible listing in 12th RoC. 17:22 Oct 17, 2005 Jkt 208001 PO 00000 Frm 00065 Fmt 4703 Sfmt 4703 E:\FR\FM\18OCN1.SGM 18OCN1 60550 Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / Notices STATUS OF NOMINATIONS TO BE REVIEWED FOR THE REPORT ON CARCINOGENS—Continued Nomination/CAS No. Primary uses or exposures Nominator Basis for nomination Status Aristolochic Acid ................ Aristolochic acid, the principle extract from Aristolochia, is a mixture of nitrophenanthrene carboxylic acids. NIEHS ............................... Review for possible listing in 12th RoC. Asphalt fumes .................... Asphalt is a petroleum product used in paving and roofing operations. Asphalt fumes are a cloud of small particles generated after volatilization of asphalt aggregates. Private Individual ............... Atrazine (192–24–9) .......... Atrazine is an herbicide used to control grass and broad-leaved weeds. Atrazine has been detected at levels that exceeded or approached the maximum contaminant level (MCL) for atrazine in 200 community surface drinking water systems. Benzofuran is produced by isolation from coal-tar oils. Benzofuran is used in the manufacture of coumarone-indene resins, which harden when heated and are used to make floor tiles and other products. Captafol is a fungicide that has been widely used since 1961 for the control of fungal diseases in fruits, vegetables, and some other plants. Use of captafol in the United States was banned in 1999. NIEHS ............................... Naturally occurring mixtures of aristolochic acids: IARC 2 finding of sufficient evidence of carcinogenicity in animals and limited evidence in humans (IARC Monograph Vol. 82, 2002). Human epidemiological studies have reported an increased risk of lung cancer among workers exposed to asphalt fumes and asphalt fumes caused skin tumors in experimental animals. Additionally, known human carcinogens (polycyclic aromatic hydrocarbons or PAHs) have been found in asphalt fumes. IARC 2 finding of sufficient evidence of carcinogenicity in animals (IARC Monograph Vol. 73, 1999). Cobalt-tungsten carbide hard-metals are manufactured by a process of powder metallurgy from tungsten and carbon (tungsten carbide), and small amounts of other metallic compounds using cobalt as a binder. They are used to make cutting and grinding tools, dies, and wear products for a broad spectrum of industries including oil and gas drilling, and mining. NIEHS ............................... Benzofuran (271–89–6) ..... Captafol (2425–06–01) ...... 1 Cobalt-tungsten carbide powders and hard metals. *Note—This nomination was previously identified as ‘‘Cobalt/TungstenCarbide Hard Metal Manufacturing’’. VerDate Aug<31>2005 17:22 Oct 17, 2005 Jkt 208001 PO 00000 NIEHS ............................... NIEHS ............................... Frm 00066 Fmt 4703 Sfmt 4703 Results of a NTP bioassay (NTP Technical Report 370, 1989) 3, which reported clear evidence of carcinogenicity in male and female mice and some evidence of carcinogenicity in female rats. IARC 2 finding of sufficient evidence of carcinogenicity in animals (IARC Monograph Vol. 53, 1991). IARC also noted that captafol is positive in many genetic assays including the invivo assay for dominant lethal mutation. Recent human cancer studies on the hard metal manufacturing industry showing an association between exposure to hard metals (cobalt tungsten-carbide) and lung cancer. E:\FR\FM\18OCN1.SGM 18OCN1 Defer review of nomination until the 13th RoC. Defer review of nomination until the 13th RoC. Defer review of nomination until the 13th RoC. Review for possible listing in 12th RoC. Review for possible listing in 12th RoC. 60551 Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / Notices STATUS OF NOMINATIONS TO BE REVIEWED FOR THE REPORT ON CARCINOGENS—Continued Nomination/CAS No. Primary uses or exposures Nominator Basis for nomination Di (2-ethylhexyl) phthalate (DEHP) (117–81–7). DEHP is mainly used as a plasticizer in polyvinyl chloride (PVC) resins for fabricating flexible vinyl products. PVC resins have been used to manufacture toys, dolls, vinyl upholstery, tablecloths, and many other products. Private Individual ............... Review for possible removal of listing in 12th RoC. Etoposide in combination with cisplatin and bleomycin. Etoposide in combination with cisplatin and bleomycin is used to treat testicular germ cell cancers. Etoposide is a DNA topoisomerase II inhibitor used in chemotherapy for non-Hodgkin’s lymphoma, smallcell lung cancer, testicular cancer, lymphomas, and a variety of childhood malignancies. Formaldehyde is primarily used in the production of resins that are used in the production of many different products including plastics, adhesives and binders for wood products, pulp and paper, synthetic fibers, and in textile finishing. It is also used as a disinfectant and preservative and as an intermediate for many industrial chemicals. NIEHS ............................... Currently listed in the RoC as reasonably anticipated to be a human carcinogen. IARC 2 reclassification as not classifiable as to its carcinogenicity to humans (Group 3) (IARC Monograph Vol. 77, 2000). IARC stated that there was sufficient evidence for the carcinogenicity in experimental animals; however, the mechanism for liver tumor involves peroxisome proliferation that is not relevant to humans. IARC 2 finding of sufficient evidence of carcinogenicity in humans (IARC Monograph Vol. 76, 2000). IARC 2 finding of limited evidence of carcinogenicity in humans (IARC Monograph Vol. 76, 2000). Formaldehyde (gas) is currently listed in the RoC as reasonably anticipated to be a human carcinogen. Nominated for reconsideration based on the 2004 IACR 2 review, which concluded that there was sufficient evidence for the carcinogenicity of formaldehyde in humans (IARC Monograph Vol. 88, 2004). Review for possible reclassification of listing status in 12th RoC. Etoposide (33419–42–0) ... Formaldehyde (50–00–0) .. VerDate Aug<31>2005 17:22 Oct 17, 2005 Jkt 208001 PO 00000 NIEHS ............................... NIEHS ............................... Frm 00067 Fmt 4703 Sfmt 4703 E:\FR\FM\18OCN1.SGM 18OCN1 Status Review for possible listing in 12th RoC. Review for possible listing in 12th RoC. 60552 Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / Notices STATUS OF NOMINATIONS TO BE REVIEWED FOR THE REPORT ON CARCINOGENS—Continued Nomination/CAS No. 1 Certain Glass Wool Fibers. *Note—This nomination was previously identified as ‘‘Glass wool (respirable size): Two nominations: (1) Insulation glass wool fibers, and (2) Special purpose glass fibers’’. Metalworking Fluids ........... ortho-Nitrotoluene (88–72– 2). Oxazepam (604–75–1) ...... Riddelliine (23246–96–0) .. Styrene (100–42–5) ........... VerDate Aug<31>2005 Primary uses or exposures Nominator Basis for nomination Status Glass wool fibers, which are a type of synthetic vitreous fibers, are an inorganic fibrous material manufactured primarily from glass and processed inorganic oxides. The composition of these fibers may vary substantially because of differences in end-use, manufacturing requirements, and biopersistence considerations. The major uses of glass wool are in thermal, electrical, and acoustical insulation, weatherproofing, and filtration media. Some glass wool fibers (special purpose fibers) are used for highefficiency air filtration media, and acid battery separators. Metal working fluids are complex mixtures that may contain mixtures of oil, emulsifiers, anti-weld agents, corrosion inhibitors, extreme pressure additives, buffers biocides, and other additives. They are used to cool and lubricate tools and working surfaces in a variety of industrial machining and grinding operations. ortho-Nitrotoluene is used to synthesize agricultural and rubber chemicals, azo and sulfur dyes, and dyes for cotton, wool, silk, leather, and paper. Oxazepam is a benzodiazepine used extensively since the 1960s for the treatment of anxiety and insomnia and in the control of symptoms of alcohol withdrawal. Riddelliine is found in class of plants growing in western United States. Cattle, horses, and sheep ingest these toxic plants. Residues have been found in milk and honey. Styrene is used in the production of polystyrene, acrylonitrile-butadienestyrene resins, styrenebutadiene rubbers and latexes, and unsaturated polystyrene resins. North American Insulation Manufacturers Association nominated glass wool (respirable size) for delisting. NIEHS recommended that the nomination be defined as ‘‘certain glass wool fibers’’ because of the considerable differences in the composition of glass wool fibers. Glass wool (respirable size) is currently listed in the RoC as reasonably anticipated to be a human carcinogen. Insulation glass wool: IARC 2 finding of limited evidence of carcinogenicity in animals and evaluation as not classifiable as to its carcinogenicity to humans (Group 3) (IARC Monograph Vol. 81, 2002). Special-purpose glass fibers: IARC 2 finding of sufficient evidence of carcinogenicity in animals (IARC Monograph Vol. 81, 2002). Review for possible listing in 12th RoC. NIEHS ............................... Recent human cancer studies of metal working fluids that show an association between exposure to these materials and cancer at several tissue sites. Review for possible listing in 12th RoC. NIEHS ............................... Results of a NTP bioassay (NTP Technical Report 504, 2002) 3, which reported clear evidence of carcinogenicity in rats and mice. Results of a NTP bioassay (NTP Technical Report 443, 1993) 3, which reported clear evidence of carcinogenicity in male and female mice. Review for possible listing in 12th RoC. NIEHS ............................... Results of a NTP bioassay (NTP Technical Report 508, 2003) 3, which reported clear evidence of carcinogenicity in male and female rats and mice. Review for possible listing in 12th RoC. Private Individual ............... IARC 2 finding of limited evidence of carcinogenicity in animals and limited evidence of carcinogenicity in humans (IARC Monograph Vol. 82, 2002). Review for possible listing in 12th RoC. 17:22 Oct 17, 2005 Jkt 208001 PO 00000 NIEHS ............................... Frm 00068 Fmt 4703 Sfmt 4703 E:\FR\FM\18OCN1.SGM 18OCN1 Defer review of nomination until the 13th RoC. 60553 Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / Notices STATUS OF NOMINATIONS TO BE REVIEWED FOR THE REPORT ON CARCINOGENS—Continued Nomination/CAS No. Primary uses or exposures Nominator Basis for nomination Talc (Two nominations) ..... (1) Cosmetic talc ............... (2) Occupational exposure to talc. Talc occurs in various geological settings around the world. Exposure to general population occurs through use of products such as cosmetics. Occupational exposure occurs during mining, milling, and processing. NIEHS ............................... Teniposide (29767–20–2) Teniposide is a DNA topoisomerase II inhibitors used mainly in the treatment of adult and childhood leukemia. Vinyl halides are used in the production of polymers and copolymers. Vinyl bromide is mainly used in polymers as a flame retardant and in the production of monoacrylic fibers for carpet-backing materials. Vinyl chloride is used to produce polyvinyl chloride and copolymers. Vinyl fluoride is used in the production of polyvinyl fluoride, which when laminated with aluminum, steel and other materials, is used as a protective surface for the exteriors of residential and commercial buildings. NIEHS ............................... The NTP deferred consideration of listing talc (asbestiform and nonasbestiform talc) in the 10th RoC because its 2000 review of talc found that there has been considerable confusion over the mineral nature and consequences of exposure to talc, both containing asbestiform fibers and not containing asbestiform fibers. It has become evident that the literature on both forms of talc, with a few exceptions, provides an inadequate characterization of the actual materials under study to enable one to reach definitive conclusions concerning the specific substances responsible for the range of adverse health outcomes reported. IARC 2 finding of limited evidence of carcinogenicity in humans (IARC Monograph Vol. 76, 2000). Vinyl fluoride and vinyl bromide are currently listed in the RoC as reasonably anticipated to be a human carcinogen and vinyl chloride is currently listed in the RoC as a known to be a human carcinogen. Vinyl mono-halides: Structural similarities and common mechanisms of tumor formation. Vinyl Mono-Halides as a class. NIEHS ............................... 1 Nomination Status Withdrawn from review. Review for possible listing in 12th RoC. Defer review of nomination until the 13th RoC. has been redefined based on public comments received from earlier Federal Register notices and/or review of the literature. Agency for Research on Cancer (IARC). IARC Monographs are available from https://monographs.iarc.fr/. 3 NTP Technical Reports are available at https://ntp.niehs.nih.gov/ see ‘‘NTP Study Reports.’’ 2 International VerDate Aug<31>2005 17:22 Oct 17, 2005 Jkt 208001 PO 00000 Frm 00069 Fmt 4703 Sfmt 4703 E:\FR\FM\18OCN1.SGM 18OCN1 60554 Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / Notices [FR Doc. 05–20729 Filed 10–17–05; 8:45 am] DEPARTMENT OF HOMELAND SECURITY DEPARTMENT OF HOMELAND SECURITY Federal Emergency Management Agency Federal Emergency Management Agency DEPARTMENT OF HOMELAND SECURITY [FEMA–1603–DR] [FEMA–1607–DR] Federal Emergency Management Agency Louisiana; Amendment No. 4 to Notice of a Major Disaster Declaration Louisiana; Amendment No. 7 to Notice of a Major Disaster Declaration [FEMA–1605–DR] AGENCY: BILLING CODE 4140–01–P Alabama; Amendment No. 7 to Notice of a Major Disaster Declaration Federal Emergency Management Agency, Emergency Preparedness and Response Directorate, Department of Homeland Security. AGENCY: ACTION: Notice. SUMMARY: This notice amends the notice of a major disaster declaration for the State of Alabama (FEMA–1605–DR), dated August 29, 2005, and related determinations. EFFECTIVE DATE: October 5, 2005. Federal Emergency Management Agency, Emergency Preparedness and Response Directorate, Department of Homeland Security. ACTION: Notice. This notice amends the notice of a major disaster declaration for the State of Louisiana (FEMA–1603–DR), dated August 29, 2005, and related determinations. SUMMARY: EFFECTIVE DATE: October 7, 2005. FOR FURTHER INFORMATION CONTACT: Magda Ruiz, Recovery Division, Federal Emergency Management Agency, Washington, DC 20472, (202) 646–2705. The notice of a major disaster declaration for the State of Louisiana is hereby amended to include the following areas among those areas determined to have been adversely affected by the catastrophe declared a major disaster by the President in his declaration of August 29, 2005: SUPPLEMENTARY INFORMATION: FOR FURTHER INFORMATION CONTACT: Magda Ruiz, Recovery Division, Federal Emergency Management Agency, Washington, DC 20472, (202) 646–2705. The notice of a major disaster declaration for the State of Alabama is hereby amended to include the following area among those areas determined to have been adversely affected by the catastrophe declared a major disaster by the President in his declaration of August 29, 2005: Marengo County for Individual Assistance (already designated for Public Assistance.) SUPPLEMENTARY INFORMATION: (The following Catalog of Federal Domestic Assistance Numbers (CFDA) are to be used for reporting and drawing funds: 97.030, Community Disaster Loans; 97.031, Cora Brown Fund Program; 97.032, Crisis Counseling; 97.033, Disaster Legal Services Program; 97.034, Disaster Unemployment Assistance (DUA); 97.046, Fire Management Assistance; 97.048, Individuals and Households Housing; 97.049, Individuals and Households Disaster Housing Operations; 97.050 Individuals and Households ProgramOther Needs, 97.036, Public Assistance Grants; 97.039, Hazard Mitigation Grant Program.) R. David Paulison, Acting Under Secretary, Emergency Preparedness and Response, Department of Homeland Security. [FR Doc. 05–20770 Filed 10–17–05; 8:45 am] All parishes in the State of Louisiana are eligible to apply for assistance under the Hazard Mitigation Grant Program. (The following Catalog of Federal Domestic Assistance Numbers (CFDA) are to be used for reporting and drawing funds: 97.030, Community Disaster Loans; 97.031, Cora Brown Fund Program; 97.032, Crisis Counseling; 97.033, Disaster Legal Services Program; 97.034, Disaster Unemployment Assistance (DUA); 97.046, Fire Management Assistance; 97.048, Individuals and Households Housing; 97.049, Individuals and Households Disaster Housing Operations; 97.050 Individuals and Households Program—Other Needs, 97.036, Public Assistance Grants; 97.039, Hazard Mitigation Grant Program.) R. David Paulison, Acting Under Secretary, Emergency Preparedness and Response, Department of Homeland Security. [FR Doc. 05–20769 Filed 10–17–05; 8:45 am] 17:22 Oct 17, 2005 SUMMARY: This notice amends the notice of a major disaster declaration for the State of Louisiana (FEMA–1607–DR), dated September 24, 2005, and related determinations. EFFECTIVE DATE: October 7, 2005. FOR FURTHER INFORMATION CONTACT: Magda Ruiz, Recovery Division, Federal Emergency Management Agency, Washington, DC 20472, (202) 646–2705. SUPPLEMENTARY INFORMATION: The notice of a major disaster declaration for the State of Louisiana is hereby amended to include the following areas among those areas determined to have been adversely affected by the catastrophe declared a major disaster by the President in his declaration of September 24, 2005: Evangeline, Sabine, St. Landry, and Vernon Parishes for Public Assistance [Categories C– G] (already designated for Individual Assistance and debris removal and emergency protective measures [Categories A and B] under the Public Assistance program, including direct Federal assistance.) De Soto, Natchitoches, and Rapides Parishes for Public Assistance [Categories C– G] (already designated for debris removal and emergency protective measures [Categories A and B] under the Public Assistance program, including direct Federal assistance.) (The following Catalog of Federal Domestic Assistance Numbers (CFDA) are to be used for reporting and drawing funds: 97.030, Community Disaster Loans; 97.031, Cora Brown Fund Program; 97.032, Crisis Counseling; 97.033, Disaster Legal Services Program; 97.034, Disaster Unemployment Assistance (DUA); 97.046, Fire Management Assistance; 97.048, Individuals and Households Housing; 97.049, Individuals and Households Disaster Housing Operations; 97.050 Individuals and Households Program—Other Needs, 97.036, Public Assistance Grants; 97.039, Hazard Mitigation Grant Program.) R. David Paulison, Acting Under Secretary, Emergency Preparedness and Response, Department of Homeland Security. [FR Doc. 05–20773 Filed 10–17–05; 8:45 am] BILLING CODE 9110–10–P BILLING CODE 9110–10–P VerDate Aug<31>2005 Federal Emergency Management Agency, Emergency Preparedness and Response Directorate, Department of Homeland Security. ACTION: Notice. AGENCY: BILLING CODE 9110–10–P Jkt 208001 PO 00000 Frm 00070 Fmt 4703 Sfmt 4703 E:\FR\FM\18OCN1.SGM 18OCN1

Agencies

[Federal Register Volume 70, Number 200 (Tuesday, October 18, 2005)]
[Notices]
[Pages 60548-60554]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 05-20729]


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DEPARTMENT OF HEALTH AND HUMAN SERVICES

National Institutes of Health


National Toxicology Program (NTP); Report on Carcinogens; Status 
of Nominations to the 12th Report on Carcinogens (RoC): Request for 
Comments and Nominations of Scientific Experts

AGENCY: National Institute of Environmental Sciences (NIEHS), National 
Institutes of Health (NIH), HHS.

[[Page 60549]]


ACTION: Request for Comments and Nominations of Scientific Experts.

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SUMMARY: The NTP invites public comments on an updated list of 
nominations proposed for review in the 12th RoC and the nomination of 
scientists who have expertise and/or knowledge relevant to the 
evaluation of carcinogenicity for these nominations (see SUPPLEMENTARY 
INFORMATION). Information on the nominations under consideration for 
the RoC can be obtained at the NTP Web site https://ntp.niehs.nih.gov 
(select ``Report on Carcinogens'') or by contacting Dr. C.W. Jameson at 
the address provided below.

DATES: Comments and nominations will be accepted until November 17, 
2005.

ADDRESSES: All correspondence should be directed to Dr. C. W. Jameson, 
National Toxicology Program, Report on Carcinogens, 79 Alexander Drive, 
Building 4401, Room 3118, P.O. Box 12233, Research Triangle Park, NC 
27709; phone: (919) 541-4096, fax: (919) 541-0144, e-mail: 
jameson@niehs.nih.gov.

SUPPLEMENTARY INFORMATION:

Background

    This notice provides an update on the current status of and/or 
additions to the list of nominations identified in earlier Federal 
Register notices relevant to the 12th RoC [69FR28940 (May 19, 2004) and 
69FR62276 (October 25, 2004)]. All but the newly identified nomination 
of formaldehyde were announced in earlier Federal Register notices. Any 
additional nominations for the 12th RoC or modifications to the 
nominations in the attached table will be announced in future Federal 
Register notices.

Request for Comments on Nominations to the RoC

    The following table identifies the nominations that the NTP has 
under consideration for review as either a new listing in the RoC or as 
a change in the current listing. These nominations are provided with 
their Chemical Abstracts Services (CAS) Registry numbers (where 
available) and pending review action. The NTP solicits public input on 
these nominations and asks for relevant information concerning their 
carcinogenicity as well as current data on production, patterns of use, 
or human exposure. The NTP also invites interested parties to identify 
any scientific issues related to the listing of a specific nomination 
in the RoC that they feel should be addressed during the reviews. 
Individuals who submitted comments in response to the May 19, 2004 
Federal Register (69FR28940) and/or the October 25, 2004 Federal 
Register notice (69FR62276) need not re-submit their comments as they 
are already part of the public record. Individuals submitting public 
comments are asked to include relevant contact information [name, 
affiliation (if any), address, telephone, fax, and e-mail] and 
sponsoring organization, if applicable. Written submissions will be 
made available on the NTP Web site as they are received (https://
ntp.niehs.nih.gov/ select ``Report on Carcinogens'') and added to the 
public record.

Request for Nominations of Scientific Experts

    The NTP solicits nominations of scientists who have expertise and/
or knowledge relevant to the evaluation of carcinogenicity for the 
selected nominations. These scientists should have expertise in various 
aspects of toxicology, epidemiology, carcinogenesis, or other relevant 
areas of science (e.g., genetic toxicity, metabolism, etc.) and/or 
experience with the agent being reviewed. The experts may be used to 
write and/or review the background documents prepared on selected 
nominations. Nominations of scientists should include contact 
information for the nominee [name, affiliation (if any), address, 
telephone, fax, and e-mail], the specific nominated agent(s) (listed in 
the table below) for which they are being recommended as an expert, and 
a curriculum vitae (if possible). Contact information for the nominator 
must also be provided.

Additional Nominations Encouraged

    The NTP solicits and encourages the broadest participation from 
interested individuals or parties in nominating agents, substances, or 
mixtures for review for future RoCs. Nominations should contain a 
rationale for review. Appropriate background information and relevant 
data [e.g., journal articles, NTP Technical Reports, International 
Agency for Research on Cancer (IARC) listings, exposure surveys, 
release inventories, etc.] that support the review of a nomination 
should be provided or referenced when possible. Contact information for 
the nominator should also be included [name, affiliation (if any), 
address, telephone, fax, and e-mail].

Background Information on the Report on Carcinogens

    The RoC is a congressionally mandated document [Section 301(b)(4) 
of the Public Health Services Act, 42 U.S.C. 241(b)(4)], published by 
the Secretary of Health and Human Services (HHS), that identifies 
agents, substances, mixtures, or exposure circumstances (collectively 
referred to as ``substances'') that may pose a carcinogenic hazard to 
human health. The Secretary, HHS, has delegated responsibility for 
preparing the draft report to the NTP. Substances are listed in the RoC 
as either known to be a human carcinogen or reasonably anticipated to 
be a human carcinogen. Review of nominations (substances that are under 
consideration for listing or removing from the RoC) involves a multi-
step scientific review process with opportunity for public comment.

    Dated: October 6, 2005.
Samuel H. Wilson,
Deputy Director, National Institute of Environmental Health Sciences.

                       Status of Nominations To Be Reviewed for the Report on Carcinogens
----------------------------------------------------------------------------------------------------------------
                                    Primary uses or                            Basis for
       Nomination/CAS No.              exposures           Nominator          nomination            Status
----------------------------------------------------------------------------------------------------------------
 1 Herbal remedies containing     Several             NIEHS.............  Herbal remedies     Review for
 aristolochic acid.                Aristolochia                            containing the      possible listing
*Note--this nomination was         species (notably                        plant genus         in 12th RoC.
 previously identified as          A. contorta, A.                         Aristolochia:
 ``Aristolochia-Related Herbal     debilis, A.                             IARC 2 finding of
 Remedies''.                       fangchi and A.                          sufficient
                                   manshuriensis)                          evidence of
                                   have been used in                       carcinogenicity
                                   traditional                             in humans (IARC
                                   Chinese medicine                        Monograph Vol.
                                   as                                      82, 2002).
                                   antirheumatics,
                                   as diuretics, in
                                   the treatment of
                                   edema, and for
                                   other conditions
                                   such as
                                   hemorrhoids,
                                   coughs, and
                                   asthma.

[[Page 60550]]

 
Aristolochic Acid...............  Aristolochic acid,  NIEHS.............  Naturally           Review for
                                   the principle                           occurring           possible listing
                                   extract from                            mixtures of         in 12th RoC.
                                   Aristolochia, is                        aristolochic
                                   a mixture of                            acids: IARC 2
                                   nitrophenanthrene                       finding of
                                   carboxylic acids.                       sufficient
                                                                           evidence of
                                                                           carcinogenicity
                                                                           in animals and
                                                                           limited evidence
                                                                           in humans (IARC
                                                                           Monograph Vol.
                                                                           82, 2002).
Asphalt fumes...................  Asphalt is a        Private Individual  Human               Defer review of
                                   petroleum product                       epidemiological     nomination until
                                   used in paving                          studies have        the 13th RoC.
                                   and roofing                             reported an
                                   operations.                             increased risk of
                                   Asphalt fumes are                       lung cancer among
                                   a cloud of small                        workers exposed
                                   particles                               to asphalt fumes
                                   generated after                         and asphalt fumes
                                   volatilization of                       caused skin
                                   asphalt                                 tumors in
                                   aggregates.                             experimental
                                                                           animals.
                                                                           Additionally,
                                                                           known human
                                                                           carcinogens
                                                                           (polycyclic
                                                                           aromatic
                                                                           hydrocarbons or
                                                                           PAHs) have been
                                                                           found in asphalt
                                                                           fumes.
Atrazine (192-24-9).............  Atrazine is an      NIEHS.............  IARC 2 finding of   Defer review of
                                   herbicide used to                       sufficient          nomination until
                                   control grass and                       evidence of         the 13th RoC.
                                   broad-leaved                            carcinogenicity
                                   weeds. Atrazine                         in animals (IARC
                                   has been detected                       Monograph Vol.
                                   at levels that                          73, 1999).
                                   exceeded or
                                   approached the
                                   maximum
                                   contaminant level
                                   (MCL) for
                                   atrazine in 200
                                   community surface
                                   drinking water
                                   systems.
Benzofuran (271-89-6)...........  Benzofuran is       NIEHS.............  Results of a NTP    Defer review of
                                   produced by                             bioassay (NTP       nomination until
                                   isolation from                          Technical Report    the 13th RoC.
                                   coal-tar oils.                          370, 1989) 3,
                                   Benzofuran is                           which reported
                                   used in the                             clear evidence of
                                   manufacture of                          carcinogenicity
                                   coumarone-indene                        in male and
                                   resins, which                           female mice and
                                   harden when                             some evidence of
                                   heated and are                          carcinogenicity
                                   used to make                            in female rats.
                                   floor tiles and
                                   other products.
Captafol (2425-06-01)...........  Captafol is a       NIEHS.............  IARC 2 finding of   Review for
                                   fungicide that                          sufficient          possible listing
                                   has been widely                         evidence of         in 12th RoC.
                                   used since 1961                         carcinogenicity
                                   for the control                         in animals (IARC
                                   of fungal                               Monograph Vol.
                                   diseases in                             53, 1991). IARC
                                   fruits,                                 also noted that
                                   vegetables, and                         captafol is
                                   some other                              positive in many
                                   plants. Use of                          genetic assays
                                   captafol in the                         including the in-
                                   United States was                       vivo assay for
                                   banned in 1999.                         dominant lethal
                                                                           mutation.
1 Cobalt-tungsten carbide         Cobalt-tungsten     NIEHS.............  Recent human        Review for
 powders and hard metals.          carbide hard-                           cancer studies on   possible listing
*Note--This nomination was         metals are                              the hard metal      in 12th RoC.
 previously identified as          manufactured by a                       manufacturing
 ``Cobalt/Tungsten-Carbide Hard    process of powder                       industry showing
 Metal Manufacturing''.            metallurgy from                         an association
                                   tungsten and                            between exposure
                                   carbon (tungsten                        to hard metals
                                   carbide), and                           (cobalt tungsten-
                                   small amounts of                        carbide) and lung
                                   other metallic                          cancer.
                                   compounds using
                                   cobalt as a
                                   binder. They are
                                   used to make
                                   cutting and
                                   grinding tools,
                                   dies, and wear
                                   products for a
                                   broad spectrum of
                                   industries
                                   including oil and
                                   gas drilling, and
                                   mining.

[[Page 60551]]

 
Di (2-ethylhexyl) phthalate       DEHP is mainly      Private Individual  Currently listed    Review for
 (DEHP) (117-81-7).                used as a                               in the RoC as       possible removal
                                   plasticizer in                          reasonably          of listing in
                                   polyvinyl                               anticipated to be   12th RoC.
                                   chloride (PVC)                          a human
                                   resins for                              carcinogen.
                                   fabricating                            IARC 2
                                   flexible vinyl                          reclassification
                                   products. PVC                           as not
                                   resins have been                        classifiable as
                                   used to                                 to its
                                   manufacture toys,                       carcinogenicity
                                   dolls, vinyl                            to humans (Group
                                   upholstery,                             3) (IARC
                                   tablecloths, and                        Monograph Vol.
                                   many other                              77, 2000). IARC
                                   products.                               stated that there
                                                                           was sufficient
                                                                           evidence for the
                                                                           carcinogenicity
                                                                           in experimental
                                                                           animals; however,
                                                                           the mechanism for
                                                                           liver tumor
                                                                           involves
                                                                           peroxisome
                                                                           proliferation
                                                                           that is not
                                                                           relevant to
                                                                           humans.
Etoposide in combination with     Etoposide in        NIEHS.............  IARC 2 finding of   Review for
 cisplatin and bleomycin.          combination with                        sufficient          possible listing
                                   cisplatin and                           evidence of         in 12th RoC.
                                   bleomycin is used                       carcinogenicity
                                   to treat                                in humans (IARC
                                   testicular germ                         Monograph Vol.
                                   cell cancers.                           76, 2000).
Etoposide (33419-42-0)..........  Etoposide is a DNA  NIEHS.............  IARC 2 finding of   Review for
                                   topoisomerase II                        limited evidence    possible listing
                                   inhibitor used in                       of                  in 12th RoC.
                                   chemotherapy for                        carcinogenicity
                                   non-Hodgkin's                           in humans (IARC
                                   lymphoma, small-                        Monograph Vol.
                                   cell lung cancer,                       76, 2000).
                                   testicular
                                   cancer,
                                   lymphomas, and a
                                   variety of
                                   childhood
                                   malignancies.
Formaldehyde (50-00-0)..........  Formaldehyde is     NIEHS.............  Formaldehyde (gas)  Review for
                                   primarily used in                       is currently        possible
                                   the production of                       listed in the RoC   reclassification
                                   resins that are                         as reasonably       of listing status
                                   used in the                             anticipated to be   in 12th RoC.
                                   production of                           a human
                                   many different                          carcinogen.
                                   products                                Nominated for
                                   including                               reconsideration
                                   plastics,                               based on the 2004
                                   adhesives and                           IACR 2 review,
                                   binders for wood                        which concluded
                                   products, pulp                          that there was
                                   and paper,                              sufficient
                                   synthetic fibers,                       evidence for the
                                   and in textile                          carcinogenicity
                                   finishing. It is                        of formaldehyde
                                   also used as a                          in humans (IARC
                                   disinfectant and                        Monograph Vol.
                                   preservative and                        88, 2004).
                                   as an
                                   intermediate for
                                   many industrial
                                   chemicals.

[[Page 60552]]

 
1 Certain Glass Wool Fibers.....  Glass wool fibers,  North American      Glass wool          Review for
*Note--This nomination was         which are a type    Insulation          (respirable size)   possible listing
 previously identified as          of synthetic        Manufacturers       is currently        in 12th RoC.
 ``Glass wool (respirable size):   vitreous fibers,    Association         listed in the RoC
 Two nominations: (1) Insulation   are an inorganic    nominated glass     as reasonably
 glass wool fibers, and (2)        fibrous material    wool (respirable    anticipated to be
 Special purpose glass fibers''.   manufactured        size) for           a human
                                   primarily from      delisting.          carcinogen.
                                   glass and          NIEHS recommended   Insulation glass
                                   processed           that the            wool: IARC 2
                                   inorganic oxides.   nomination be       finding of
                                   The composition     defined as          limited evidence
                                   of these fibers     ``certain glass     of
                                   may vary            wool fibers''       carcinogenicity
                                   substantially       because of the      in animals and
                                   because of          considerable        evaluation as not
                                   differences in      differences in      classifiable as
                                   end-use,            the composition     to its
                                   manufacturing       of glass wool       carcinogenicity
                                   requirements, and   fibers.             to humans (Group
                                   biopersistence                          3) (IARC
                                   considerations.                         Monograph Vol.
                                   The major uses of                       81, 2002).
                                   glass wool are in                      Special-purpose
                                   thermal,                                glass fibers:
                                   electrical, and                         IARC 2 finding of
                                   acoustical                              sufficient
                                   insulation,                             evidence of
                                   weatherproofing,                        carcinogenicity
                                   and filtration                          in animals (IARC
                                   media. Some glass                       Monograph Vol.
                                   wool fibers                             81, 2002).
                                   (special purpose
                                   fibers) are used
                                   for high-
                                   efficiency air
                                   filtration media,
                                   and acid battery
                                   separators.
Metalworking Fluids.............  Metal working       NIEHS.............  Recent human        Review for
                                   fluids are                              cancer studies of   possible listing
                                   complex mixtures                        metal working       in 12th RoC.
                                   that may contain                        fluids that show
                                   mixtures of oil,                        an association
                                   emulsifiers, anti-                      between exposure
                                   weld agents,                            to these
                                   corrosion                               materials and
                                   inhibitors,                             cancer at several
                                   extreme pressure                        tissue sites.
                                   additives,
                                   buffers biocides,
                                   and other
                                   additives. They
                                   are used to cool
                                   and lubricate
                                   tools and working
                                   surfaces in a
                                   variety of
                                   industrial
                                   machining and
                                   grinding
                                   operations.
ortho-Nitrotoluene (88-72-2)....  ortho-Nitrotoluene  NIEHS.............  Results of a NTP    Review for
                                   is used to                              bioassay (NTP       possible listing
                                   synthesize                              Technical Report    in 12th RoC.
                                   agricultural and                        504, 2002) 3,
                                   rubber chemicals,                       which reported
                                   azo and sulfur                          clear evidence of
                                   dyes, and dyes                          carcinogenicity
                                   for cotton, wool,                       in rats and mice.
                                   silk, leather,
                                   and paper.
Oxazepam (604-75-1).............  Oxazepam is a       NIEHS.............  Results of a NTP    Defer review of
                                   benzodiazepine                          bioassay (NTP       nomination until
                                   used extensively                        Technical Report    the 13th RoC.
                                   since the 1960s                         443, 1993) 3,
                                   for the treatment                       which reported
                                   of anxiety and                          clear evidence of
                                   insomnia and in                         carcinogenicity
                                   the control of                          in male and
                                   symptoms of                             female mice.
                                   alcohol
                                   withdrawal.
Riddelliine (23246-96-0)........  Riddelliine is      NIEHS.............  Results of a NTP    Review for
                                   found in class of                       bioassay (NTP       possible listing
                                   plants growing in                       Technical Report    in 12th RoC.
                                   western United                          508, 2003) 3,
                                   States. Cattle,                         which reported
                                   horses, and sheep                       clear evidence of
                                   ingest these                            carcinogenicity
                                   toxic plants.                           in male and
                                   Residues have                           female rats and
                                   been found in                           mice.
                                   milk and honey.
Styrene (100-42-5)..............  Styrene is used in  Private Individual  IARC 2 finding of   Review for
                                   the production of                       limited evidence    possible listing
                                   polystyrene,                            of                  in 12th RoC.
                                   acrylonitrile-                          carcinogenicity
                                   butadiene-styrene                       in animals and
                                   resins, styrene-                        limited evidence
                                   butadiene rubbers                       of
                                   and latexes, and                        carcinogenicity
                                   unsaturated                             in humans (IARC
                                   polystyrene                             Monograph Vol.
                                   resins.                                 82, 2002).

[[Page 60553]]

 
Talc (Two nominations)..........  Talc occurs in      NIEHS.............  The NTP deferred    Withdrawn from
(1) Cosmetic talc...............   various                                 consideration of    review.
(2) Occupational exposure to       geological                              listing talc
 talc.                             settings around                         (asbestiform and
                                   the world.                              non-asbestiform
                                   Exposure to                             talc) in the 10th
                                   general                                 RoC because its
                                   population occurs                       2000 review of
                                   through use of                          talc found that
                                   products such as                        there has been
                                   cosmetics.                              considerable
                                   Occupational                            confusion over
                                   exposure occurs                         the mineral
                                   during mining,                          nature and
                                   milling, and                            consequences of
                                   processing.                             exposure to talc,
                                                                           both containing
                                                                           asbestiform
                                                                           fibers and not
                                                                           containing
                                                                           asbestiform
                                                                           fibers. It has
                                                                           become evident
                                                                           that the
                                                                           literature on
                                                                           both forms of
                                                                           talc, with a few
                                                                           exceptions,
                                                                           provides an
                                                                           inadequate
                                                                           characterization
                                                                           of the actual
                                                                           materials under
                                                                           study to enable
                                                                           one to reach
                                                                           definitive
                                                                           conclusions
                                                                           concerning the
                                                                           specific
                                                                           substances
                                                                           responsible for
                                                                           the range of
                                                                           adverse health
                                                                           outcomes reported.
Teniposide (29767-20-2).........  Teniposide is a     NIEHS.............  IARC 2 finding of   Review for
                                   DNA topoisomerase                       limited evidence    possible listing
                                   II inhibitors                           of                  in 12th RoC.
                                   used mainly in                          carcinogenicity
                                   the treatment of                        in humans (IARC
                                   adult and                               Monograph Vol.
                                   childhood                               76, 2000).
                                   leukemia.
Vinyl Mono-Halides as a class...  Vinyl halides are   NIEHS.............  Vinyl fluoride and  Defer review of
                                   used in the                             vinyl bromide are   nomination until
                                   production of                           currently listed    the 13th RoC.
                                   polymers and                            in the RoC as
                                   copolymers. Vinyl                       reasonably
                                   bromide is mainly                       anticipated to be
                                   used in polymers                        a human
                                   as a flame                              carcinogen and
                                   retardant and in                        vinyl chloride is
                                   the production of                       currently listed
                                   monoacrylic                             in the RoC as a
                                   fibers for carpet-                      known to be a
                                   backing                                 human carcinogen.
                                   materials. Vinyl                       Vinyl mono-
                                   chloride is used                        halides:
                                   to produce                              Structural
                                   polyvinyl                               similarities and
                                   chloride and                            common mechanisms
                                   copolymers. Vinyl                       of tumor
                                   fluoride is used                        formation.
                                   in the production
                                   of polyvinyl
                                   fluoride, which
                                   when laminated
                                   with aluminum,
                                   steel and other
                                   materials, is
                                   used as a
                                   protective
                                   surface for the
                                   exteriors of
                                   residential and
                                   commercial
                                   buildings.
----------------------------------------------------------------------------------------------------------------
1 Nomination has been redefined based on public comments received from earlier Federal Register notices and/or
  review of the literature.
2 International Agency for Research on Cancer (IARC). IARC Monographs are available from https://
 monographs.iarc.fr/.
3 NTP Technical Reports are available at https://ntp.niehs.nih.gov/ see ``NTP Study Reports.''


[[Page 60554]]

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