“The pivotal (GLP) subcutaneous (SC) toxicity studies (6-week + 9-week recovery, 3-month + 6-week recovery, and 6-month) were conducted in Sprague-Dawley rat and cynomolgus monkey.”
✓ VerifiedFDA pharmacology/toxicology review, p. 5Source ↗
Why that species
Monkey CGRP sequence identical to human, so binding affinity assumed similar (not assessed)
“Binding to monkey CGRP was not assessed because its sequence is identical to that of human CGRP; therefore, binding affinity was assumed to be similar in both species.”
✓ VerifiedFDA pharmacology/toxicology review, p. 4Source ↗
Surrogate molecule
No surrogate; the clinical antibody was tested in rat and cynomolgus monkey
“The pivotal (GLP) subcutaneous (SC) toxicity studies (6-week + 9-week recovery, 3-month + 6-week recovery, and 6-month) were conducted in Sprague-Dawley rat and cynomolgus monkey.”
✓ VerifiedFDA pharmacology/toxicology review, p. 5Source ↗