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

polatuzumab vedotin · CD79b
Genotoxicity
Not conducted with ADC; MMAE Ames and mouse lymphoma negative, rat micronucleus positive (aneugenic)
“MMAE was genotoxic in the rat bone marrow micronucleus study through an aneugenic mechanism.”
✓ VerifiedFDA pharmacology/toxicology review, p. 12Source ↗
Carcinogenicity
Not conducted (not warranted for indication; ICH S9)
“Carcinogenicity studies in animals have not been performed with polatuzumab vedotin or MMAE and are not warranted for the proposed indication.”
✓ VerifiedFDA pharmacology/toxicology review, p. 12Source ↗
Instead of carcinogenicity
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.
Instead of genotoxicity
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.
DRG histopathology
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.
Reproductive & developmental
No fertility study (ICH S9); MMAE rat EFD embryolethal and teratogenic; testicular toxicity in rat repeat-dose
“A designated fertility study was not conducted with polatuzumab vedotin or MMAE and is not needed for the proposed indication.”
✓ VerifiedFDA pharmacology/toxicology review, p. 12Source ↗
Safety pharmacology
Incorporated into rat and monkey repeat-dose studies; MMAE hERG IC50 >100 uM; no adverse effects
“Safety pharmacology assessments (neurobehavioral, cardiovascular, and respiratory) that were incorporated into the repeat-dose toxicology studies showed no polatuzumab vedotin- or surrogate ADC-induced adverse effects in monkeys.”
✓ VerifiedFDA pharmacology/toxicology review, p. 10Source ↗
Genotox: Ames
MMAE: negative in Ames assay
“MMAE was not mutagenic in the bacterial reverse mutation (Ames) assay or the L5178Y mouse lymphoma forward mutation assay.”
✓ VerifiedUS prescribing informationSource ↗
Genotox: in vitro mammalian
MMAE: negative in L5178Y mouse lymphoma forward mutation assay
“MMAE was not mutagenic in the bacterial reverse mutation (Ames) assay or the L5178Y mouse lymphoma forward mutation assay.”
✓ VerifiedUS prescribing informationSource ↗
Genotox: in vivo
MMAE: positive in rat bone marrow micronucleus (aneugenic)
“MMAE was positive for genotoxicity in the in vivo rat bone marrow micronucleus study through an aneugenic mechanism.”
✓ VerifiedUS prescribing informationSource ↗
Carcinogenicity model
Not conducted with polatuzumab vedotin or MMAE (not warranted for the indication)
“Carcinogenicity studies in animals have not been performed with polatuzumab vedotin or MMAE and are not warranted for the proposed indication.”
✓ VerifiedFDA pharmacology/toxicology review, p. 12Source ↗
Carcinogenicity timing
Not conducted with polatuzumab vedotin or MMAE; not warranted for the indication
“Carcinogenicity studies in animals have not been performed with polatuzumab vedotin or MMAE and are not warranted for the proposed indication.”
✓ VerifiedFDA pharmacology/toxicology review, p. 12Source ↗
hERG / QT
MMAE hERG IC50 >100 µM (no appreciable inhibition)
“MMAE alone did not appreciably inhibit the human ether-à-go-go-related gene (hERG) channel (IC50 > 100 µM) in voltage-clamped human embryonic kidney cells”
✓ VerifiedFDA pharmacology/toxicology review, p. 26Source ↗

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

Padcev

enfortumab vedotin · Nectin-4
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 →