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Vabysmo: animal efficacy model or human cells?

faricimab · VEGF-A x Ang-2
Efficacy evidence
Laser-induced choroidal neovascularization (nAMD model) in cynomolgus monkeys, IVT faricimab vs ranibizumab
“In a laser-induced model of choroidal neovascularization (CNV) in cynomolgus monkeys, faricimab reduced the formation of CNV and subsequent injury to the retina due to lesion formation to a significantly greater degree compared to anti-VEGF-A monoclonal antibody (mAb) alone.”
✓ VerifiedFDA pharmacology/toxicology review, p. 18Source ↗
Why that model
No rodent DME model: faricimab reacts with human, not rodent, VEGF-A
“An alternative rodent model for DME was not tested because the antibody in question reacts with human VEGF-A antigen and not with rodent, so classical animal models of diabetes could not work according to the applicant.”
✓ VerifiedEMA assessment report, p. 29Source ↗
Reviewer's view of the efficacy data
CHMP: in vivo model covered nAMD only, not DME; not a blocking issue
“The CHMP noted that the Applicant presented the in vivo experimental model only for nAMD and not for DME, in contrast with the intended indications of faricimab.”
✓ VerifiedEMA assessment report, p. 29Source ↗

Same question, other bispecifics

Bizengri

zenocutuzumab · HER2 x HER3
Mouse xenografts: HER2+ breast cancer (JIMT-1) and NRG1 fusion-positive lung and pancreatic patient-derived xenografts

Blincyto

blinatumomab · CD19 x CD3
Blinatumomab in NOD/SCID mouse tumor xenograft models

Columvi

glofitamab · CD20 x CD3
Human HSC-engrafted NOG/NSG mice, non-tumor-bearing and tumor-bearing

Elrexfio

elranatamab · BCMA x CD3
Multiple myeloma xenograft models (MM.1S, OPM2, MOLP8) with varying BCMA expression

Epkinly

epcoritamab · CD20 x CD3
Human lymphoma cell line-derived xenograft (CDX) mouse models and one patient-derived xenograft (PDX) model

Hemlibra

emicizumab · FIXa x FX
Cynomolgus monkey models of acute and chronic hemophilia A

Imdelltra

tarlatamab · DLL3 x CD3
Xenograft models in NSG mice injected with activated, expanded human T cells

Kimmtrak

tebentafusp · CD3 x gp100 (TCR fusion)
Mice engrafted with HLA-A*02:01/gp100+ Mel526 human melanoma cells plus human PBMCs; tumor growth inhibition

Korjuny

catumaxomab · EpCAM x CD3
SCID mouse i.p. human ovarian carcinoma ascites xenograft treated with human PBMCs plus catumaxomab

Lunsumio

mosunetuzumab · CD20 x CD3
Human CD20/CD3 double-transgenic mice: peripheral and tissue B-cell depletion and T-cell activation (comparable to analogue 2H7v16/40G5c)

Lynozyfic

linvoseltamab · BCMA x CD3
NSG mice co-implanted with human PBMC and NCI-H929 or MOLP-8 myeloma xenografts

Ordspono

odronextamab · CD20 x CD3
Lymphoma tumour models in humanized (BRG) mice and immunodeficient NSG mice

Removab

catumaxomab · EpCAM x CD3
Human ovarian carcinoma xenograft (catumaxomab); syngeneic human-EpCAM mouse tumour model with surrogate BiLu

Rybrevant

amivantamab · EGFR x MET
Patient-derived tumor xenografts with EGFR exon 20 insertion mutations in mice

Talvey

talquetamab · GPRC5D x CD3
Myeloma cell line xenografts (H929 prophylactic; MM.1S, RPMI 8226 established) in humanized immunodeficient mice

Tecvayli

teclistamab · BCMA x CD3
Human MM xenografts (H929, RPMI-8226) in human PBMC/T-cell-engrafted NSG mice

Ziihera

zanidatamab · HER2 x HER2 (biparatopic)
HER2 3+ xenografts in nude mice (SKOV-3, NCI-N87, patient-derived GXA 3054); no effect in HER2-negative model

Summary across all 18 bispecifics →