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Ordspono: which tox species, and why?

odronextamab · CD20 x CD3
Species
Cynomolgus monkey only
“Binding to human and cynomolgus CD20 and CD3 was confirmed in in vitro studies. Cynomolgus monkey was considered the pharmacological relevant species further used in toxicology studies.”
✓ VerifiedEMA assessment report, p. 29Source ↗
Why that species
Binds CD20 and CD3 on human and monkey cells (CD3 affinity ~100-fold weaker in monkey); no binding to mouse/rat cells
“An additional binding study showed that odronextamab did not bind to either B-cells or T-cells isolated from mouse and rat.”
✓ VerifiedEMA assessment report, p. 30Source ↗
Surrogate molecule
No surrogate; clinical molecule (REGN1979) tested in cynomolgus monkey
“The safety profile of odronextamab was evaluated in cynomolgus monkeys in 2 GLP-compliant repeat”
✓ VerifiedEMA assessment report, p. 34Source ↗

Same question, other bispecifics

Bizengri

zenocutuzumab · HER2 x HER3
Cynomolgus monkey only

Blincyto

blinatumomab · CD19 x CD3
Chimpanzee (only relevant species, limited non-terminal studies) plus mouse with murine surrogate

Columvi

glofitamab · CD20 x CD3
Cynomolgus monkey only

Elrexfio

elranatamab · BCMA x CD3
Cynomolgus monkey only

Epkinly

epcoritamab · CD20 x CD3
Cynomolgus monkey only

Hemlibra

emicizumab · FIXa x FX
Cynomolgus monkey only

Imdelltra

tarlatamab · DLL3 x CD3
Cynomolgus monkey (pivotal); mouse surrogate muS757 for EFD and 1-month study

Kimmtrak

tebentafusp · CD3 x gp100 (TCR fusion)
No relevant species; in vitro human cell/tissue assays only

Korjuny

catumaxomab · EpCAM x CD3
No relevant species; limited single-dose mouse, rat, one cynomolgus; BiLu mouse surrogate

Lunsumio

mosunetuzumab · CD20 x CD3
Cynomolgus monkey only

Lynozyfic

linvoseltamab · BCMA x CD3
Cynomolgus monkey only

Removab

catumaxomab · EpCAM x CD3
No relevant species; in vitro human cells plus mouse surrogate (BiLu); limited single-dose rodent/monkey

Rybrevant

amivantamab · EGFR x MET
Cynomolgus monkey only

Talvey

talquetamab · GPRC5D x CD3
Cynomolgus monkey only (tool molecule for pivotal tox); no rodent tox

Tecvayli

teclistamab · BCMA x CD3
Cynomolgus monkey only (rabbit used for SC local tolerance only)

Vabysmo

faricimab · VEGF-A x Ang-2
Cynomolgus monkey only for pivotal tox (rabbit dropped after early studies)

Ziihera

zanidatamab · HER2 x HER2 (biparatopic)
Cynomolgus monkey only

Summary across all 18 bispecifics →