45 CFR 46 Protection of Human Subjects The HHS (OHRP) regulations, 45 CFR part 46 , include four subparts: subpart A, also known as the Federal Policy or the “Common Rule”; subpart B, additional protections for pregnant women, human fetuses, and neonates; subpart C, additional protections for prisoners; and subpart D, additional protections for children. 45 CFR 164 Disclosures for Public Health Activities The Privacy Rule, HIPAA. 21 CFR 50 Protection of Human Subjects (FDA) 21 CFR 50 Include the regualtions for the protection of human research subjects. In many ways, identical to 45 CFR 46. 21