Clinical Studies Despite increasing preclinical evidences of the involvement of seleno-GPxs in cellular radiosensitivity, there is no such clinical trial reported yet that focused solely on examining the effects of seleno-GPxs for modulating the radiation response of normal and/or tumor tissues
Ho YS, Magnenat JL, Bronson RT, Cao J, Gargano M, Sugawara M, Funk CD
Depress Anxiety 35(9):851860
Novel C-17-heteroaryl steroidal CYP17 inhibitors/antiandrogens: synthesis, in vitro biological activity, pharmacokinetics and antitumor activity in the LAPC4 human prostate cancer xenograft model
There is also a genuine "natural retinol alternative" trend that has muddied the waters further bakuchiol is the ingredient usually marketed that way, not copper peptides, but the two get lumped together in casual conversation since both are positioned as gentler options for retinol-sensitive skin