Human bone marrow engraftment of NAM-cultured cord blood cells in irradiated NOD/SCID mice; in vitro migration and phenotype assays
“Studies evaluating cells cultured with NAM and cytokines in nonobese diabetic/severe combined immunodeficiency (NOD/SCID) mice at 1.2 x 106 to 1 x 107 cells/mouse (approximately 4.8 x 107 to 4 x 108 cells/kg) showed an increased overall engraftment”
✓ VerifiedFDA summary basis for approval, p. 13Source ↗
Why that model
NOD/SCID chosen over another strain based on human cell engraftment levels in a pilot study
“Results showed that NOD/SCID mice were preferable over mice based on cell engraftment levels.”
✓ VerifiedFDA pharmacology/toxicology review, p. 30Source ↗
Reviewer's view of the efficacy data
Engraftment claims unsubstantiated: the >0.5% human-cell cutoff was not validated; NOD/SCID not expected to mimic human homing
“However, data was not provided to confirm the validity of the cutoff limit of >0.5%, therefore the claims of “engraftment” are unsubstantiated.”
✓ VerifiedFDA pharmacology/toxicology review, p. 10Source ↗
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