National Toxicology Program

Trichloroethylene (1999)

• RG1 voted 6 Yes/ 2 No to list as reasonably anticipated to be a human carcinogen
• RG2 voted 7 Yes/ 1 No to list as reasonably anticipated to be a human carcinogen
• BSC RoC Subcommittee voted unanimously (7/0) to list as reasonably anticipated to be a human carcinogen

Trichloroethylene (2000)

• RG1: Motion to list TCE as known to be a human carcinogen passed by unanimous vote (7/0).
• RG2: Motion to list TCE as known to be a human carcinogen was defeated by a vote of 3 yes to 4 no. Negative votes (4) cast because members felt the human data did not meet the criteria for listing as a known human carcinogen because the exposures in the human studies may not have been specific for TCE.
• BSC RoC Subcommittee: Motion that the listing of TCE should remain as reasonably anticipated to be a human carcinogen passed by a vote of 9 yes to 1 no. Negative vote (1) because member felt human data sufficient to list as a known human carcinogen.