National Toxicology Program

National Toxicology Program

Committee Recommendations: 2,3,7,8- Tetrachlorodibenzo-p-dioxin (TCDD)

http://ntp.niehs.nih.gov/go/16231
  • RG1 voted unanimously (10/0) to upgrade listing to known to be a human carcinogen
  • RG2 voted unanimously (8/0) to upgrade listing to known to be a human carcinogen
  • BSC RoC Subcommittee voted 5 Yes/ 7 No/ 1 Abstention not to upgrade listing to known to be a human carcinogen ( Subcommittee initially reviewed TCDD at October, 1997 meeting and voted 4 yes/3 no/1 abstention to upgrade listing to a known to be human carcinogen . Reviewed a second time, at Dr. Olden's request, at the December, 1998 meeting where the Subcommittee voted against motion to upgrade listing by vote of 5 yes/7no/1 abstention. Therefore subcommittee recommendation was to continue to list as reasonably anticipated to be a human carcinogen .)
The NTP is administratively located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.

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