Environment and Breast Cancer: Science Review


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MeIQ
CAS RN 77094-11-2



Cancer studies: Mammary gland tumors
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Originating list
The list(s) or database(s) in which the chemical was identified as showing an increase in mammary gland tumors. CPDB: Carcinogenic Potency Database, IARC: International Agency for Research on Chemicals Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man summaries, NTP TR: National Toxicology Program (NTP) Technical Reports, NTP 11ROC: NTP 11th Report on Carcinogens, CCRIS: Chemical Carcinogenesis Research Information Service.
IARC Monographs, National Toxicology Program 11th Report on Carcinogens, Chemical Carcinogenesis Research Information System
Mammary gland tumor summary
A summary of findings related to mammary gland tumors, most often excerpted from IARC Monographs or the NTP 11th ROC, and, in some cases, supplemented by our evaluation of individual studies and reviews, is available for the priority chemicals and 67 others.
NTP 11th ROC: In rats, MeIQ caused mammary-gland tumors in females. The carcinogenic effects of MeIQ may be inhibited or enhanced by many factors, including interactions of heterocyclic amine mixtures.
Citations to review sources and individual studies reporting mammary gland tumors are listed below.
Citation
Source Type
Notes
International Agency for Research on Cancer, Monographs on the evaluation of carcinogenic risk of chemicals to man.VOL.: 56 (1993) (p. 197) MeIQ.
Review
Oral administration produced mammary adenocarcinomas in female rats in Kato 1989.
Carcinogenic Potency Database 2005. Gold LS ST, Manley NB, Garfinkel GB, Ames BN. Summary Table by Chemical of Carcinogenicity Results in CPDB on 1485 Chemicals. 2005
Review
One of one study did not report mammary tumors: Ohgaki 1986.
National Toxicology Program 11th Report on Carcinogens. Heterocyclic Amines
Review
Oral administration caused mammary tumors in female rats (NTP 2002. Report on Carcinogens Background Document for Heterocyclic Amines: PhIP, MeIQ and MeIQx. National Toxicology Program. http://ntp-server.niehs.nih.gov/newhomeroc/roc11/HCAsPub.pdf).
Ohgaki H, Hasegawa H, Suenaga M, Kato T, Sato S, Takayama S, et al. Induction of hepatocellular carcinoma and highly metastatic squamous cell carcinomas in the forestomach of mice by feeding 2-amino-3,4-dimethylimidazo[4,5-f]quinoline. Carcinogenesis 1986;7(11):1889-93.
Primary Literature
A study listed by CPDB 2005 that did not report mammary tumors.
Kato T, Migita H, Ohgaki H, Sato S, Takayama S, Sugimura T. Induction of tumors in the Zymbal gland, oral cavity, colon, skin and mammary gland of F344 rats by a mutagenic compound, 2-amino-3,4-dimethylimidazo[4,5-f]quinoline. Carcinogenesis 1989;10(3):601-3.
Primary Literature
From IARC, review postponed.
National Toxicology Program 11th Report on Carcinogens, Table 1. Chemicals nominated to the National Toxicology Program for in-depth toxicological evaluation for carcinogenesis testing in fiscal years 1988-2003.
Review
Not nominated for NTP testing in 1998-2003.