Nonclinical precedent Request an invite
Precedia/Gene therapy/Beqvez/Skipped studies

Beqvez: genotox, carcinogenicity and repro: done or skipped?

fidanacogene elaparvovec · Factor IX
Genotoxicity
Not conducted (classical); vector integration site analysis in dog and NHP liver instead
“Based on the IS profile, genotoxicity from vector integration appears to be a low risk.”
✓ VerifiedFDA pharmacology/toxicology review, p. 39Source ↗
Carcinogenicity
Not conducted (not warranted given product characteristics, BD/tox data, population)
“Studies to evaluate the safety pharmacology, developmental and reproductive toxicity, and carcinogenicity/tumorigenicity of BEQVEZ were not conducted.”
✓ VerifiedFDA pharmacology/toxicology review, p. 3Source ↗
Reproductive & developmental
Not conducted (male-only population); rabbit semen shedding/germline study only
“This reviewer agrees that the omission of dedicated embryo-fetal development studies and pre- and postnatal development studies is acceptable.”
✓ VerifiedFDA pharmacology/toxicology review, p. 20Source ↗
Safety pharmacology
Not conducted
“No safety pharmacology studies with BEQVEZ were conducted.”
✓ VerifiedFDA pharmacology/toxicology review, p. 19Source ↗
Genotox: Ames
Not stated in public reviews
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Genotox: in vitro mammalian
Not stated in public reviews
Not reported in the public reviews. Reviewers summarise selectively, so this usually means it wasn't discussed publicly, not that it wasn't studied.
Genotox: in vivo
Vector integration site analysis in NHP liver: no clonal expansion; genotoxicity from integration judged low risk
“The number of detected IS in the liver was broadly similar or declined between interim and terminal time points, suggesting an absence of clonal expansion. Although IS were detected in the vicinity of cancer genes, these genes were not identified as vector CIS.”
✓ VerifiedFDA pharmacology/toxicology review, p. 39Source ↗
Carcinogenicity model
Not conducted; 2-year NHP vector integration study showed no hepatocellular hyperplasia or carcinoma
“In a 2-year vector integration study in NHPs administered 5 × 1012 vg/kg, there was no indication that integration of vector DNA into host cell DNA resulted in altered liver function, hepatocellular hyperplasia or carcinoma.”
✓ VerifiedFDA pharmacology/toxicology review, p. 3Source ↗
Carcinogenicity timing
Not conducted: not warranted (product characteristics, biodistribution and toxicology results)
“Studies to evaluate the safety pharmacology, developmental and reproductive toxicity, and carcinogenicity/tumorigenicity of BEQVEZ were not conducted. These studies are not warranted based on the product characteristics, results from the biodistribution and toxicology studies”
✓ VerifiedFDA pharmacology/toxicology review, p. 3Source ↗
hERG / QT
No safety pharmacology studies conducted
“No safety pharmacology studies with BEQVEZ were conducted.”
✓ VerifiedFDA pharmacology/toxicology review, p. 19Source ↗

Same question, other gene therapies

Adstiladrin

nadofaragene firadenovec · IFN-alpha2b (adenovirus, intravesical)
Not conducted for rAd-IFN; conducted for excipient Syn3 only (Ames and chromosome aberration, negative)

Casgevy

exagamglogene autotemcel · BCL11A enhancer (CRISPR-Cas9, ex vivo HSC)
No conventional studies; specialized on-/off-target editing (GUIDE-seq, in silico, hybrid capture) and chromosomal aberration assessments

Elevidys

delandistrogene moxeparvovec · Micro-dystrophin
Not conducted (low-frequency random AAV integration per literature)

Fayuvi

rebisufligene etisparvovec · SGSH (AAV9)
Not conducted; weight-of-evidence risk assessment used

Genglycos

pariglasgene brecaparvovec · G6PC (AAV8)
Not conducted (low AAV integration risk); vector integration assessed in germline transmission study

Glybera

alipogene tiparvovec · LPL (AAV1)
Not conducted (standard tests not relevant); integration studies (LAM-PCR, nrLAM-PCR) instead

Hemgenix

etranacogene dezaparvovec · Factor IX
Not conducted as standard battery; integration site analysis (LAM-PCR) in mouse and NHP liver showed low random integration

Imlygic

talimogene laherparepvec · GM-CSF (oncolytic HSV-1)
Not conducted (ICH S6(R1))

Itvisma

onasemnogene abeparvovec (intrathecal) · SMN1 (AAV9, intrathecal)
Not conducted (single administration, known product characteristics, class safety profile)

Kebilidi

eladocagene exuparvovec · AADC
Not conducted (agreed with CHMP; low integration risk in post-mitotic neurons)

Kresladi

marnetegragene autotemcel · ITGB2 (LVV, ex vivo HSC)
Integration site analyses only (mouse and human transduced cells); no standard genotoxicity battery

Lenmeldy

atidarsagene autotemcel · ARSA (LVV, ex vivo HSC)
Conducted: integration site analysis, in vitro immortalization assay, tumor-prone Cdkn2a-/- mouse; no insertional transformation

Luxturna

voretigene neparvovec · RPE65
Not conducted (AAV low integration frequency; limited systemic exposure)

Lyfgenia

lovotibeglogene autotemcel · HBB T87Q (LVV, ex vivo HSC)
Insertional mutagenesis assessed: in vitro immortalization (IVIM) assay and integration site analyses; low risk

Otarmeni

lunsotogene parvec · OTOF (AAV, intracochlear)
Not conducted (low AAV insertional mutagenesis risk; limited distribution beyond inner ear)

Papzimeos

zopapogene imadenovec · HPV6/11 antigens (gorilla adenovirus)
Not conducted (non-integrating, replication-incompetent adenovector; no insertional mutagenesis)

Roctavian

valoctocogene roxaparvovec · Factor VIII
Not conducted (literature on AAV); NHP liver integration site analysis: 1.55x10^-3 IS/cell, no clonal expansion

Skysona

elivaldogene autotemcel · ABCD1 (LVV, ex vivo HSC)
Standard genotox not relevant; insertional mutagenesis assessed by in vitro immortalization assay and integration site analysis

Strimvelis

autologous CD34+ cells transduced with ADA (no INN) · ADA (gamma-retroviral, ex vivo HSC)
Not conducted (conventional assays cannot detect insertional events)

Tudriqev

vusolimogene oderparepvec · GALV-GP + GM-CSF (oncolytic HSV-1)
Not conducted (not warranted based on product characteristics and safety profile)

Vyjuvek

beremagene geperpavec · COL7A1 (HSV-1, topical)
Not conducted (HSV-1 does not integrate; negligible insertional mutagenesis)

Waskyra

etuvetidigene autotemcel · WAS (LVV, ex vivo HSC)
Conventional mutagenicity not conducted; IVIM assay, vector insertion site analysis and VITA performed, no genotoxic potential

Zevaskyn

prademagene zamikeracel · COL7A1 (RV-modified keratinocyte sheets)
Not conducted (integration site analysis in transduced RDEB keratinocytes instead; no clonality or oncogene preference)

Zolgensma

onasemnogene abeparvovec · SMN1
Not conducted (low random rAAV integration per literature)

Zynteglo

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)

Summary across all 26 gene therapies →