§500.90. Waiver of requirements. — Inbound Citations

(c) For each sponsored compound that FDA decides should be regulated as a carcinogen, FDA will either analyze the data from the bioassays using a statistical extrapolation procedure as outlined in paragraph (c)(1) of this section or evaluate an alternate procedure proposed by the sponsor as provided in § 500.90. In either case, paragraphs (c)(2) and (3) of this section apply.

(1) For each substance tested in separate bioassays, FDA will calculate the concentration of the residue of carcinogenic concern that corresponds to a maximum lifetime risk to the test animal of 1 in 1 million. FDA will designate the lowest value obtained as So. Because the total diet is not derived from food-producing animals, FDA will make corrections for food intake. FDA will designate as Sm the concentration of residue in a specific edible tissue corresponding to a maximum lifetime risk of cancer in test animals of 1 in 1 million.

(2) From the appropriate residue chemistry data FDA will calculate the Rm as described in § 500.86(c). The sponsor must provide a regulatory method in accordance with § 500.88(b). FDA will calculate the LOD of the method from data submitted by the sponsor under § 500.88. The LOD must be less than or equal to Rm.

(3) FDA will conclude that the provisions of this subpart are satisfied when no residue of the compound is detectable (that is, the marker residue is below the LOD) using the approved regulatory method under the conditions of use of the sponsored compound, including any required preslaughter withdrawal period or milk discard time.

(1) For those compounds that FDA determines may induce cancer when ingested by man or animals, i.e., suspect carcinogens, §§ 500.80(b), 500.82, and 500.90 apply.

(8) Any information required under §§ 500.80 through 500.92 of this chapter (Subpart E, Regulation of Carcinogenic Compounds Used in Food-Producing Animals), where applicable.

(b) Any notification establishing, amending, or revoking an import tolerance will be made publicly available. A summary of the basis for the decision will be publicly released in accordance with the provisions of part 20 of this chapter. If FDA determines that the new animal drug referred to in the request is a new animal drug that induces cancer when ingested by people or animals, and the requester complies with the requirements of §§ 500.80 through 500.92 of this chapter (Subpart E, Regulation of Carcinogenic Compounds Used in Food-Producing Animals), the regulatory method for ascertaining the marker residue in the target tissue will be made publicly available. All information and safety data submitted with the request, or previously submitted information incorporated in, and considered as part of, a request on the basis of specific reference to such information, shall be available for public disclosure, also in accordance with the provisions of part 20 of this chapter. Trade secrets and confidential commercial or financial information are exempted from release under § 20.61 of this chapter.