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Atlas/Cell therapy/Gintuit/Efficacy evidence

Gintuit: animal efficacy model or human cells?

allogeneic cultured keratinocytes and fibroblasts in bovine collagen · Allogeneic keratinocytes + fibroblasts
Efficacy evidence
Full-thickness wound in athymic (nude) mice grafted with Apligraf
“The purpose of this study was to characterize the in vivo tissue maturation, remodeling, and cellular persistence of Apligraf in a full-thickness wound in athymic mice.”
✓ VerifiedFDA pharmacology/toxicology review, p. 16Source ↗
Why that model
Already approved as a device (PMA) for ulcers, so limited additional preclinical studies were done
“Apligraf®, which is identical to Apligraf® (oral), is approved under a PMA filing (reviewed by CDRH) for the treatment of venous leg and diabetic foot ulcers; therefore, limited additional preclinical studies were conducted in support of this BLA.”
✓ VerifiedFDA pharmacology/toxicology review, p. 48Source ↗
Reviewer's view of the efficacy data
Murine wound models did not directly support the proposed healing-by-secondary-intention mechanism; graft behaved as a skin graft
“Although the sponsor’s hypothesis is that Apligraf® functions to enhance wound healing by secondary intention, the results from the in vivo studies in the murine wound models did not provide direct evidence to support this position.”
✓ VerifiedFDA pharmacology/toxicology review, p. 49Source ↗

Same question, other cell therapies

Abecma

idecabtagene vicleucel · BCMA CAR-T
NSG mice bearing subcutaneous BCMA+ human MM xenografts: dose-dependent anti-tumor activity and improved survival

Alofisel

darvadstrocel · Allogeneic adipose MSC
TNBS-induced colitis mice: dose-dependent improved survival and body weight; no anal fistula model

Amtagvi

lifileucel · TIL therapy
Published literature only: tumor-derived lymphocytes with Cy and IL-2 in murine colon adenocarcinoma and sarcoma metastasis models

Aucatzyl

obecabtagene autoleucel · CD19 CAR-T
Systemic human tumor xenograft mouse model: single IV dose of obe-cel significantly reduced tumor burden by Day 12

Breyanzi

lisocabtagene maraleucel · CD19 CAR-T
Raji Burkitt's lymphoma-bearing NOD/SCID IL-2Rγnull xenograft mice

Carvykti

ciltacabtagene autoleucel · BCMA CAR-T
Immunodeficient (NCG) mice engrafted with human multiple myeloma cells: dose-dependent anti-tumor activity and survival

ChondroCelect

characterised viable autologous cartilage cells · Autologous chondrocytes
Ectopic nu/nu mouse model and orthotopic goat cartilage-defect model (ChondroCelect-like goat cells)

Ebvallo

tabelecleucel · EBV-specific allogeneic T cells
SCID mice with EBV+ BLCL-induced B cell lymphomas (IP/SC) treated with autologous tabelecleucel

Encelto

revakinagene taroretcel · CNTF (encapsulated RPE cell implant)
rcd1 dog model of retinitis pigmentosa: NT-501 implant protected outer nuclear layer from photoreceptor loss

Holoclar

autologous corneal epithelial cells containing limbal stem cells · Autologous limbal stem cells
No product-specific pharmacology studies; published rat LSCD studies with similar fibrin-cultured limbal cells as proof of principle

Kymriah

tisagenlecleucel · CD19 CAR-T
Mice bearing human primary pre-B ALL xenografts: CTL019 improved survival vs mock T cells

Lantidra

donislecel · Allogeneic pancreatic islets
Literature only: animal allogeneic/syngeneic islets with immunosuppressants in diabetic mice, rats and NHPs; no studies with the product

Laviv

azficel-T · Autologous fibroblasts
Literature only: animal analog fibroblasts in immunocompetent animals and human fibroblasts in immunodeficient mice; product not tested

MACI

autologous cultured chondrocytes on porcine collagen membrane · Autologous chondrocytes
Analogous MACI (animal cells on same membrane) in critical-sized knee/stifle cartilage defects in rabbits and horses: improved repair vs membrane alone or empty defect

Omisirge

omidubicel · Expanded cord blood HPC
Human bone marrow engraftment of NAM-cultured cord blood cells in irradiated NOD/SCID mice; in vitro migration and phenotype assays

Provenge

sipuleucel-T · PAP-GM-CSF (autologous APC)
Rodent surrogates: rat APCs with rPAP-rGM-CSF inducing prostate-specific inflammation; antigen-loaded APCs protecting mice against tumour challenge

Rethymic

allogeneic processed thymus tissue · Allogeneic thymus tissue
Allogeneic neonatal thymus transplanted into nude rats (engraftment, endogenous T cell development)

Ryoncil

remestemcel-L · Allogeneic BM-MSC
Human ceMSC co-cultured with allogeneic immune cells (T cell suppression, cytokine modulation); no animal GVHD model

Spherox

spheroids of autologous matrix-associated chondrocytes · Autologous chondrocyte spheroids
Immunodeficient mice (human spheroids) plus minipig pilot and 6-month Merino sheep studies with analogously produced autologous spheroids

StrataGraft

allogeneic cultured keratinocytes and dermal fibroblasts in murine collagen · Allogeneic keratinocytes + fibroblasts
No nonclinical pharmacology studies; efficacy claims rest on clinical data

Tecartus

brexucabtagene autoleucel · CD19 CAR-T
Surrogate anti-murine CD19 CAR T cells in lymphodepleted syngeneic CD19+ B-cell lymphoma mice

Tecelra

afamitresgene autoleucel · MAGE-A4 TCR-T
Murine tumor xenograft studies showing dose-dependent tumor control

Tregzi

allogeneic Treg immunotherapy with HSPC and T cells (Orca-T) · Allogeneic Treg + HSPC + Tcon
Xenogeneic GVHD model in sub-lethally irradiated immunodeficient mice: human Tcons with human Tregs gave dose-dependent GVHD inhibition

Yescarta

axicabtagene ciloleucel · CD19 CAR-T
Published surrogate anti-murine CD19 CAR T cells in lymphodepleted syngeneic CD19+ B-cell lymphoma mice

Zalmoxis

allogeneic T cells modified with HSV-TK / dLNGFR (nalotimagene carmaleucel) · HSV-TK suicide-gene T cells
Xenogeneic GvHD models in NOD/SCID mice comparing MM-TK with unmanipulated PBL

Zemcelpro

dorocubicel · UM171-expanded cord blood CD34+
In vivo primary and secondary engraftment of UM171-cultured human cord blood CD34+ cells; in vitro expansion studies

Summary across all 27 cell therapies →