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

enfortumab vedotin · Nectin-4
Genotoxicity
Not conducted with ADC; MMAE Ames and mouse lymphoma negative, rat micronucleus positive (aneugenic)
“Using the standard core battery of genetic toxicology studies recommended in the ICH S2 guidance, MMAE was reported to be genotoxic in the in vivo rat bone marrow micronucleus assay through an aneugenic mechanism.”
✓ VerifiedFDA multi-discipline review, p. 36Source ↗
Carcinogenicity
Not conducted (ICH S9, advanced cancer)
“Carcinogenicity studies were not conducted or needed to support marketing of PADCEV in patients with advanced cancer.”
✓ VerifiedFDA multi-discipline review, p. 85Source ↗
Reproductive & developmental
No fertility or PPND studies (ICH S9); preliminary rat EFD with ADC and MMAE EFD: embryolethal, teratogenic
“Fertility and early embryonic development studies were not conducted or needed to support marketing of PADCEV in patients with advanced cancer.”
✓ VerifiedFDA multi-discipline review, p. 85Source ↗
Safety pharmacology
Incorporated into repeat-dose tox studies; MMAE hERG negative; no CV, respiratory or CNS effects
“No effect was reported on ECG, heart rate, blood pressure, respiratory or CNS endpoints.”
✓ VerifiedFDA multi-discipline review, p. 34Source ↗

Same question, other ADCs

Adcetris

brentuximab vedotin · CD30
Conducted on MMAE: Ames and mouse lymphoma negative; rat micronucleus positive (aneugenic)

Besponsa

inotuzumab ozogamicin · CD22
Conducted: calicheamicin positive in Ames and in vitro micronucleus; ADC clastogenic in mouse micronucleus

Datroway

datopotamab deruxtecan · Trop-2
Not conducted with ADC; DXd Ames negative, clastogenic in vitro chromosome aberration and in vivo rat micronucleus

Decnupaz

pivekimab sunirine · CD123
Not conducted with ADC (ICH S9); FGN849 positive in Ames TA102, in vitro and in vivo micronucleus

Elahere

mirvetuximab soravtansine · FRα
Not conducted with ADC; DM4 and S-methyl-DM4 Ames negative, rat bone marrow micronucleus positive

Emrelis

telisotuzumab vedotin · c-Met
Not conducted with ADC; MMAE aneugenic (positive rat micronucleus), Ames and mouse lymphoma negative

Enhertu

fam-trastuzumab deruxtecan · HER2
Not conducted with ADC; DXd clastogenic (rat micronucleus, CHL chromosome aberration), Ames negative

Kadcyla

ado-trastuzumab emtansine · HER2
Conducted on DM1: Ames negative; rat micronucleus positive (aneugenic/clastogenic); monkey micronucleus inconclusive

Mylotarg

gemtuzumab ozogamicin · CD33
Conducted: ADC clastogenic in mouse micronucleus; free calicheamicin DMH mutagenic and clastogenic in vitro

Polivy

polatuzumab vedotin · CD79b
Not conducted with ADC; MMAE Ames and mouse lymphoma negative, rat micronucleus positive (aneugenic)

Tivdak

tisotumab vedotin · Tissue factor
Not conducted with ADC; MMAE: Ames and mouse lymphoma negative, rat micronucleus positive (aneugenic)

Trodelvy

sacituzumab govitecan · Trop-2
Not conducted with ADC; SN-38 Ames negative, in vitro micronucleus positive (clastogenic)

Zynlonta

loncastuximab tesirine · CD19
Not conducted with ADC; SG3199 clastogenic in vitro (micronucleus, chromosome aberration); Ames not assessable (cytotoxicity)

Summary across all 14 ADCs →