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Rybrevant: how long were the pivotal tox studies?

amivantamab · EGFR x MET
Longest pivotal study
13 weeks
“Janssen conducted a GLP-compliant 13-week toxicology study in cynomolgus monkeys. Monkeys received intravenous amivantamab once weekly at doses of 0, 60, or 120 mg/kg.”
✓ VerifiedFDA multi-discipline review, p. 37Source ↗
Pivotal GLP studies
Cynomolgus IV weekly: 4-week non-GLP tolerability, 6-week GLP (6-week recovery), 13-week GLP; 2-week SC local tolerance
“The repeat-dose toxicity of amivantamab in cynomolgus monkeys was evaluated in a 4-week tolerability non-GLP study, and 6-week toxicity with 6-week recovery and 13-week toxicity GLP studies.”
✓ VerifiedEMA assessment report, p. 37Source ↗
Route in tox
Intravenous (slow bolus, weekly); SC for local tolerance
“Route of administration: Intravenous; slow bolus injection”
✓ VerifiedFDA multi-discipline review, p. 58Source ↗

Same question, other bispecifics

Bizengri

zenocutuzumab · HER2 x HER3
13 weeks

Blincyto

blinatumomab · CD19 x CD3
13 weeks

Columvi

glofitamab · CD20 x CD3
4 weeks

Elrexfio

elranatamab · BCMA x CD3
13 weeks

Epkinly

epcoritamab · CD20 x CD3
5 weeks

Kimmtrak

tebentafusp · CD3 x gp100 (TCR fusion)
0 (no in vivo tox study)

Korjuny

catumaxomab · EpCAM x CD3
0 (no in vivo tox study)

Lunsumio

mosunetuzumab · CD20 x CD3
26 weeks

Ordspono

odronextamab · CD20 x CD3
16 weeks

Removab

catumaxomab · EpCAM x CD3
0 (no in vivo tox study)

Talvey

talquetamab · GPRC5D x CD3
4 weeks

Tecvayli

teclistamab · BCMA x CD3
5 weeks

Vabysmo

faricimab · VEGF-A x Ang-2
26 weeks

Ziihera

zanidatamab · HER2 x HER2 (biparatopic)
13 weeks

Summary across all 18 bispecifics →