Not conducted (low random rAAV integration per literature)
“Recent scientific literature supports low random integration frequencies of recombinant AAV (rAAV) vectors1,2 and lack of hepatic genotoxicity in rAAV2/5 genome integration in NHP and human liver samples.”
✓ VerifiedFDA pharmacology/toxicology review, p. 14Source ↗
Carcinogenicity
Not conducted (no tumors in clinical trials since 2013)
“Ongoing clinical trials (under IND #15699) since September 2013 have shown no evidence of tumor formation clinically in any subject administered with AVXS-101.”
✓ VerifiedFDA pharmacology/toxicology review, p. 14Source ↗
Reproductive & developmental
Not conducted (infants sexually immature, low gonadal vector); label later reports mouse fertility study without effects
“The target patient population for AVXS-101 with infantile-onset SMA are typically less than 1 year of age and sexually immature.”
✓ VerifiedFDA pharmacology/toxicology review, p. 14Source ↗
Safety pharmacology
Not conducted
“No safety pharmacology studies were performed with AVXS-101.”
✓ VerifiedFDA pharmacology/toxicology review, p. 13Source ↗
betibeglogene autotemcel · HBB T87Q (LVV, ex vivo HSC)
Insertional mutagenesis assessed instead of standard genotox: in vitro immortalization assay (low potential) and integration site analysis (no clonal dominance)