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

dorocubicel · UM171-expanded cord blood CD34+
Genotoxicity
Done for residual UM171 only (Ames, CHO micronucleus negative) plus cytogenetics of treated cells; none for cells
“An AMES and a micronucleus test were conducted to assess the genetic safety of UM171”
✓ VerifiedEMA assessment report, p. 35Source ↗
Carcinogenicity
Not conducted
“Carcinogenicity studies were not submitted, which can be agreed.”
✓ VerifiedEMA assessment report, p. 37Source ↗
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 applicable: cells not genetically modified
“An AMES and a micronucleus test were conducted to assess the genetic safety of UM171”
✓ VerifiedEMA assessment report, p. 35Source ↗
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 reproductive and developmental toxicity studies were presented.”
✓ VerifiedEMA assessment report, p. 37Source ↗
Safety pharmacology
In vitro hERG assay with residual UM171 (non-GLP), no relevant block
“UM171 appeared not to have a relevant blocking effect on the channel activity.”
✓ VerifiedEMA assessment report, p. 31Source ↗
Genotox: Ames
Negative (UM171; non-GLP and GLP Ames)
“Genotoxicity of UM171 was evaluated in a non-GLP AMES test at first with no mutagenic response observed. After receiving scientific advice from EMA the applicant conducted an additional GLP compliant AMES test in accordance with ICH S2 and OECD guidance with no mutagenic response observed.”
✓ VerifiedEMA assessment report, p. 45Source ↗
Genotox: in vitro mammalian
In vitro micronucleus in CHO cells (UM171): negative
“UM171 was considered to be negative, i.e. the test item did not induce chromosome breaks and/or loss in cultured CHO cells.”
✓ VerifiedEMA assessment report, p. 37Source ↗
Genotox: in vivo
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.
Carcinogenicity model
Not conducted; no neoplasia seen in NSG mouse studies of UM171-expanded cells
“There was also no indication of neoplasia in the in vivo toxicological studies of UM171 expanded cells in NSG mice.”
✓ VerifiedEMA assessment report, p. 45Source ↗
Carcinogenicity timing
Not required (ICH S9, advanced cancer)
“The applicant did not perform any carcinogenicity studies, which is in line with ICH S9 since the product is to be used in patients with advanced cancer.”
✓ VerifiedEMA assessment report, p. 47Source ↗
hERG / QT
UM171 (0.1-10 µM): non-significant current decrease; no relevant hERG block (non-GLP)
“UM171 (0.1 to 10 µM) did decrease the current through the channel, but this was not statistically significant compared to baseline. Taken together, UM171 appeared not to have a relevant blocking effect on the channel activity.”
✓ VerifiedEMA assessment report, p. 31Source ↗

Same question, other cell therapies

Abecma

idecabtagene vicleucel · BCMA CAR-T
Not conducted (traditional); insertion site analysis of 20 clinical lots

Alofisel

darvadstrocel · Allogeneic adipose MSC
Not conducted; cell-based product does not interact with DNA

Amtagvi

lifileucel · TIL therapy
Not conducted (not warranted given product characteristics and biological activity)

Aucatzyl

obecabtagene autoleucel · CD19 CAR-T
Not conducted (third-generation SIN lentiviral vector, release criterion, long-term clinical monitoring for insertional mutagenesis)

Breyanzi

lisocabtagene maraleucel · CD19 CAR-T
Not conducted (traditional); lentiviral integration site mapping instead

Carvykti

ciltacabtagene autoleucel · BCMA CAR-T
Not conducted (classical); lentiviral integration site analysis instead

ChondroCelect

characterised viable autologous cartilage cells · Autologous chondrocytes
Not conducted (per cell-based product guideline)

Ebvallo

tabelecleucel · EBV-specific allogeneic T cells
Not conducted (ICH S6(R1)); non-genetically engineered cells

Encelto

revakinagene taroretcel · CNTF (encapsulated RPE cell implant)
Done: ISO-10993 battery (bacterial, mammalian cell, mouse micronucleus on device extracts), negative

Gintuit

allogeneic cultured keratinocytes and fibroblasts in bovine collagen · Allogeneic keratinocytes + fibroblasts
Not conducted (nature of product and clinical experience)

Holoclar

autologous corneal epithelial cells containing limbal stem cells · Autologous limbal stem cells
Not conducted (classical); in vitro karyotype analysis of cells

Kymriah

tisagenlecleucel · CD19 CAR-T
Not conducted (classical); lentiviral integration site analysis on 14 donor products

Lantidra

donislecel · Allogeneic pancreatic islets
Not conducted

Laviv

azficel-T · Autologous fibroblasts
Not conducted (autologous nature, prior human experience)

MACI

autologous cultured chondrocytes on porcine collagen membrane · Autologous chondrocytes
Not conducted on cells; four studies on collagen membrane were non-mutagenic

Omisirge

omidubicel · Expanded cord blood HPC
No standard genotox; cytogenetic/karyotype analyses of CF and NF showed no clonal aneuploidy

Provenge

sipuleucel-T · PAP-GM-CSF (autologous APC)
Not conducted (autologous nature of product)

Rethymic

allogeneic processed thymus tissue · Allogeneic thymus tissue
Not conducted

Ryoncil

remestemcel-L · Allogeneic BM-MSC
Not conducted (not warranted)

Spherox

spheroids of autologous matrix-associated chondrocytes · Autologous chondrocyte spheroids
Not conducted (per cell-based product guideline)

StrataGraft

allogeneic cultured keratinocytes and dermal fibroblasts in murine collagen · Allogeneic keratinocytes + fibroblasts
Not conducted

Tecartus

brexucabtagene autoleucel · CD19 CAR-T
Not conducted (traditional); vector integration site analysis performed instead

Tecelra

afamitresgene autoleucel · MAGE-A4 TCR-T
Not conducted (no test models or relevant species); integration site analysis showed polyclonal products, no selective insertion

Tregzi

allogeneic Treg immunotherapy with HSPC and T cells (Orca-T) · Allogeneic Treg + HSPC + Tcon
Not conducted

Yescarta

axicabtagene ciloleucel · CD19 CAR-T
Not conducted; literature review of retroviral-transduced T-cell transformation risk instead

Zalmoxis

allogeneic T cells modified with HSV-TK / dLNGFR (nalotimagene carmaleucel) · HSV-TK suicide-gene T cells
Not conducted; in vitro retroviral integration site analysis instead

Summary across all 27 cell therapies →