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

tebentafusp · CD3 x gp100 (TCR fusion)
Genotoxicity
Not conducted (fusion protein; ICH S6/S9)
“Based on the biologic properties of tebentafusp, a fusion protein, genetic toxicology studies are not warranted.”
✓ VerifiedFDA multi-discipline review, p. 45Source ↗
Carcinogenicity
Not conducted (advanced cancer indication)
“Carcinogenicity studies were not warranted for the proposed indication.”
✓ VerifiedFDA multi-discipline review, p. 46Source ↗
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
Not conducted (no relevant species); weight-of-evidence; FDA concluded possible fetal harm to skin, inner ear, eye
“Due to the specificity for human targets, embryo-fetal development (EFD) studies cannot be conducted in nonclinical species. Therefore, a weight of evidence assessment was conducted to evaluate the risk of tebentafusp administration on pregnancy and embryo-fetal development.”
✓ VerifiedFDA multi-discipline review, p. 46Source ↗
Safety pharmacology
Not conducted (no relevant species; in vitro only)
“Therefore, no specific safety pharmacology studies were conducted.”
✓ VerifiedFDA multi-discipline review, p. 42Source ↗
Genotox: Ames
Not conducted (ICH S6)
“Genetic toxicology studies were not conducted for tebentafusp in accordance with the ICH S6 guidance.”
✓ VerifiedEMA assessment report, p. 30Source ↗
Genotox: in vitro mammalian
Not conducted (ICH S6)
“Genetic toxicology studies were not conducted for tebentafusp in accordance with the ICH S6 guidance.”
✓ VerifiedEMA assessment report, p. 30Source ↗
Genotox: in vivo
Not conducted (ICH S6)
“Genetic toxicology studies were not conducted for tebentafusp in accordance with the ICH S6 guidance.”
✓ VerifiedEMA assessment report, p. 30Source ↗
Carcinogenicity model
Not conducted (not warranted for the advanced-cancer indication)
“The FDA’s Assessment: Carcinogenicity studies were not warranted for the proposed indication.”
✓ VerifiedFDA multi-discipline review, p. 46Source ↗
Carcinogenicity timing
Not required for the proposed indication
“The FDA’s Assessment: Carcinogenicity studies were not warranted for the proposed indication.”
✓ VerifiedFDA multi-discipline review, p. 46Source ↗
hERG / QT
Not conducted (no relevant species; human-specific protein)
“Safety pharmacology studies were not conducted for tebentafusp. Tebentafusp is a human specific protein and does not bind proteins from nonhuman species.”
✓ VerifiedEMA assessment report, p. 26Source ↗

Email me this as a cited memo

Skipped studies for Kimmtrak, each with the regulator's own words, the page and a link. Ready to paste into a briefing document or send to your team.

Same question, other multispecifics

Bizengri

zenocutuzumab · HER2 x HER3
Not conducted (ICH S6(R1))

Blincyto

blinatumomab · CD19 x CD3
Not conducted (ICH S6(R1); protein of natural amino acids)

Columvi

glofitamab · CD20 x CD3
Not conducted (ICH S6(R1))

Elrexfio

elranatamab · BCMA x CD3
Not conducted (ICH S6(R1))

Epkinly

epcoritamab · CD20 x CD3
Not conducted (ICH S6(R1), ICH S9)

Hemlibra

emicizumab · FIXa x FX
Not conducted (ICH S6)

Imdelltra

tarlatamab · DLL3 x CD3
Not conducted (ICH S6(R1))

Korjuny

catumaxomab · EpCAM x CD3
Not conducted (ICH S6(R1))

Lunsumio

mosunetuzumab · CD20 x CD3
Not conducted (ICH S6(R1))

Lynozyfic

linvoseltamab · BCMA x CD3
Not conducted (antibody not expected to interact with DNA)

Ordspono

odronextamab · CD20 x CD3
Not conducted (antibody not expected to interact with DNA)

Removab

catumaxomab · EpCAM x CD3
Not conducted (not submitted; biologic, no relevant model)

Rybrevant

amivantamab · EGFR x MET
Not conducted (not appropriate for antibodies)

Talvey

talquetamab · GPRC5D x CD3
Not conducted (ICH S6; biotechnology-derived product)

Tecvayli

teclistamab · BCMA x CD3
Not conducted (ICH S6(R1))

Vabysmo

faricimab · VEGF-A x Ang-2
Not conducted (ICH S6(R1))

Ziihera

zanidatamab · HER2 x HER2 (biparatopic)
Not conducted (ICH S6(R1), ICH S9)

Summary across all 18 multispecifics →