15th Report on Carcinogens

U.S. Department of Health and Human Services released the 15th Report on Carcinogens January 2021. The RoC is a congressionally mandated, science-based, public health document that NTP prepares for the HHS Secretary. This cumulative report currently includes 256 listings of agents, substances, mixtures, and exposure circumstances that are known or reasonably anticipated to cause cancer in humans.

Learn more about the RoC at http://ntp.niehs.nih.gov/go/roc15.

Report on Carcinogens Table of Contents

Official Citation: NTP (National Toxicology Program). 2021. Report on Carcinogens, Fifteenth Edition.; Research Triangle Park, NC: U.S. Department of Health and Human Services, Public Health Service. http://ntp.niehs.nih.gov/go/roc15/ (EndNote XML)

Introduction
Review Process
Substances Listed
Substance profiles
Index: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Supplemental Materials
- A
- Acetaldehyde
- 2-Acetylaminofluorene
- Acrylamide
- Acrylonitrile
- Adriamycin
- Aflatoxins
- Alcoholic Beverage Consumption
- 2-Aminoanthraquinone
- o-Aminoazotoluene
- 4-Aminobiphenyl
- 1-Amino-2,4-dibromoanthraquinone
- 1-Amino-2-methylanthraquinone
- Amitrole
- o-Anisidine and Its Hydrochloride
- Antimony Trioxide
- Aristolochic Acids
- Arsenic and Inorganic Arsenic Compounds
- Asbestos
- Azacitidine
- Azathioprine
- B
- Basic Red 9 Monohydrochloride
- Benzene
- Benzidine and Dyes Metabolized to Benzidine
  - Benzidine
  - Dyes Metabolized to Benzidine (Benzidine Dye Class)
- Benzotrichloride
- Beryllium and Beryllium Compounds
- 2,2-Bis(bromomethyl)-1,3-propanediol (Technical Grade)
- Bis(chloromethyl) Ether and Technical-Grade Chloromethyl Methyl Ether
- Bromodichloromethane
- 1-Bromopropane
- 1,3-Butadiene
- 1,4-Butanediol Dimethanesulfonate
- Butylated Hydroxyanisole
- C
- Cadmium and Cadmium Compounds
- Captafol
- Carbon Tetrachloride
- Ceramic Fibers (Respirable Size)
- Chlorambucil
- Chloramphenicol
- Chlorendic Acid
- Chlorinated Paraffins (C12, 60% Chlorine)
- Chloroform
- 3-Chloro-2-methylpropene
- 4-Chloro-o-phenylenediamine
- Chloroprene
- p-Chloro-o-toluidine and Its Hydrochloride
- Chromium Hexavalent Compounds
- Cisplatin
- Coal Tars and Coal-Tar Pitches
- Cobalt
  - Cobalt and Cobalt Compounds that Release Cobalt In Vivo
  - Cobalt-Tungsten Carbide: Powders and Hard Metals
- Coke-Oven Emissions
- p-Cresidine
- Cumene
- Cupferron
- Cyclophosphamide
- Cyclosporin A
- D
- Dacarbazine
- Danthron
- 2,4-Diaminoanisole Sulfate
- 2,4-Diaminotoluene
- Diazoaminobenzene
- 1,2-Dibromo-3-chloropropane
- 1,2-Dibromoethane
- 2,3-Dibromo-1-propanol
- 1,4-Dichlorobenzene
- 3,3'-Dichlorobenzidine and Its Dihydrochloride
- Dichlorodiphenyltrichloroethane
- 1,2-Dichloroethane
- Dichloromethane
- 1,3-Dichloropropene (Technical Grade)
- Diepoxybutane
- Diesel Exhaust Particulates
- Di(2-ethylhexyl) Phthalate
- Diethylstilbestrol
- Diethyl Sulfate
- Diglycidyl Resorcinol Ether
- 3,3'-Dimethoxybenzidine and Dyes Metabolized to 3,3'-Dimethoxybenzidine
  - 3,3'-Dimethoxybenzidine
  - Dyes Metabolized to 3,3'-Dimethoxybenzidine (3,3'-Dimethoxybenzidine Dye Class)
- 4-Dimethylaminoazobenzene
- 3,3'-Dimethylbenzidine and Dyes Metabolized to 3,3'-Dimethylbenzidine
  - 3,3'-Dimethylbenzidine
  - Dyes Metabolized to 3,3'-Dimethylbenzidine (3,3'-Dimethylbenzidine Dye Class)
- Dimethylcarbamoyl Chloride
- 1,1-Dimethylhydrazine
- Dimethyl Sulfate
- Dimethylvinyl Chloride
- 1,4-Dioxane
- Disperse Blue
- E
- Epichlorohydrin
- Erionite
- Estrogens, Steroidal
- Ethylene Oxide
- Ethylene Thiourea
- Ethyl Methanesulfonate
- F
- Formaldehyde
- Furan
- G
- Certain Glass Wool Fibers (Inhalable)
- Glycidol
- H
- Haloacetic Acids
- Helicobacter pylori
- Heterocyclic Amines (Selected)
  - 2-Amino-3,4-dimethylimidazo[4,5-f]quinoline
  - 2-Amino-3,8-dimethylimidazo[4,5-f]quinoxaline
  - 2-Amino-3-methylimidazo[4,5-f]quinoline
  - 2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine
- Hexachlorobenzene
- Hexachloroethane
- Hexamethylphosphoramide
- Hydrazine and Hydrazine Sulfate
- Hydrazobenzene
- I
- Ionizing Radiation
  - X-Radiation and Gamma Radiation
  - Neutrons
  - Radon
  - Thorium Dioxide
- Iron Dextran Complex
- Isoprene
- J
- K
- Kepone
- L
- Lead and Lead Compounds
- Lindane, Hexachlorocyclohexane (Technical Grade), and Other Hexachlorocyclohexane Isomers
- M
- Melphalan
- Methoxsalen with Ultraviolet A Therapy
- 2-Methylaziridine
- 4,4'-Methylenebis(2-chloroaniline)
- 4,4'-Methylenebis(N,N-dimethyl)benzenamine
- 4,4'-Methylenedianiline and Its Dihydrochloride
- Methyleugenol
- Methyl Methanesulfonate
- Metronidazole
- Michlers Ketone
- Mineral Oils: Untreated and Mildly Treated
- Mirex
- Mustard Gas
- N
- Naphthalene
- 2-Naphthylamine
- Nickel Compounds and Metallic Nickel
  - Nickel Compounds
  - Metallic Nickel
- Nitrilotriacetic Acid
- o-Nitroanisole
- Nitroarenes (Selected)
  - 1,6-Dinitropyrene
  - 1,8-Dinitropyrene
  - 6-Nitrochrysene
  - 1-Nitropyrene
  - 4-Nitropyrene
- Nitrobenzene
- Nitrofen
- Nitrogen Mustard Hydrochloride
- Nitromethane
- 2-Nitropropane
- N-Nitrosamines: 15 Listings
  - N-Methyl-N'-Nitro-N-Nitrosoguanidine
  - N-Nitrosodi-n-butylamine
  - N-Nitrosodiethanolamine
  - N-Nitrosodiethylamine
  - N-Nitrosodimethylamine
  - N-Nitrosodi-n-propylamine
  - N-Nitroso-N-ethylurea
  - 4-(N-Nitrosomethylamino)-1-(3-pyridyl)-1-butanone
  - N-Nitroso-N-methylurea
  - N-Nitrosomethylvinylamine
  - N-Nitrosomorpholine
  - N-Nitrosonornicotine
  - N-Nitrosopiperidine
  - N-Nitrosopyrrolidine
  - N-Nitrososarcosine
- Nitrosourea Chemotherapeutic Agents
  - Bis(chloroethyl) Nitrosourea
  - 1-(2-Chloroethyl)-3-cyclohexyl-1-nitrosourea
  - 1-(2-Chloroethyl)-3-(4-methylcyclohexyl)-1-nitrosourea
  - Chlorozotocin
  - Streptozotocin
- o-Nitrotoluene
- Norethisterone
- O
- Ochratoxin A
- 4,4'-Oxydianiline
- Oxymetholone
- P
- Pentachlorophenol and By-products of Its Synthesis
- Phenacetin and Analgesic Mixtures Containing Phenacetin
  - Phenacetin
  - Analgesic Mixtures Containing Phenacetin
- Phenazopyridine Hydrochloride
- Phenolphthalein
- Phenoxybenzamine Hydrochloride
- Phenytoin and Phenytoin Sodium
- Polybrominated Biphenyls
- Polychlorinated Biphenyls
- Polycyclic Aromatic Hydrocarbons: 15 Listings
  - Benz[a]anthracene
  - Benzo[b]fluoranthene
  - Benzo[j]fluoranthene
  - Benzo[k]fluoranthene
  - Benzo[a]pyrene
  - Dibenz[a,h]acridine
  - Dibenz[a,j]acridine
  - Dibenz[a,h]anthracene
  - 7H-Dibenzo[c,g]carbazole
  - Dibenzo[a,e]pyrene
  - Dibenzo[a,h]pyrene
  - Dibenzo[a,i]pyrene
  - Dibenzo[a,l]pyrene
  - Indeno[1,2,3-cd]pyrene
  - 5-Methylchrysene
- Procarbazine and Its Hydrochloride
- Progesterone
- 1,3-Propane Sultone
- β-Propiolactone
- Propylene Oxide
- Propylthiouracil
- Q
- R
- Reserpine
- Riddelliine
- S
- Safrole
- Selenium Sulfide
- Silica, Crystalline (Respirable Size)
- Soots
- Strong Inorganic Acid Mists Containing Sulfuric Acid
- Styrene
- Styrene-7,8-oxide
- Sulfallate
- T
- Tamoxifen
- 2,3,7,8-Tetrachlorodibenzo-p-dioxin
- Tetrachloroethylene
- Tetrafluoroethylene
- Tetranitromethane
- Thioacetamide
- 4,4'-Thiodianiline
- Thiotepa
- Thiourea
- Tobacco-Related Exposures
  - Tobacco Smoking
  - Environmental Tobacco Smoke
  - Smokeless Tobacco
- Toluene Diisocyanates
- o‑Toluidine
- Toxaphene
- Trichloroethylene
- 2,4,6-Trichlorophenol
- 1,2,3-Trichloropropane
- Tris(2,3-dibromopropyl) Phosphate
- U
- Ultraviolet-Radiation-Related Exposures
  - Solar Radiation
  - Exposure to Sunlamps or Sunbeds
  - Broad-Spectrum UVR
  - UVA
  - UVB
  - UVC
- Urethane
- V
- Viruses: Eight Listings
  - Epstein-Barr Virus
  - Hepatitis B Virus
  - Hepatitis C Virus
  - Human Immunodeficiency Virus Type 1
  - Human Papillomaviruses: Some Genital-Mucosal Types
  - Human T-cell Lymphotropic Virus Type 1
  - Kaposi Sarcoma-Associated Herpesvirus
  - Merkel Cell Polyomavirus
- 4-Vinyl-1-cyclohexene Diepoxide
- Vinyl Halides (Selected)
  - Vinyl Bromide
  - Vinyl Chloride
  - Vinyl Fluoride
- W
- Wood Dust
- X - Z
- Supplemental Materials
Appendices
- All Appendices
Download the CASRN index in MS Excel

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