UM171 only: rat (single dose) and cynomolgus monkey (3 doses, 7-day washout)
“Intravenous administration at doses 8,000-20,000 times higher than the estimated human exposure to UM171 demonstrated no toxicity in rats (single-dose study) or cynomolgus monkeys (administrated 3 times with a 7-day washout period before testing the next dose).”
Not conducted (not for use in pregnancy; minimal residual UM171)
“No reproductive and developmental toxicity studies on either UM171 or dorocubicel were conducted by the applicant. The applicant contended that such studies are unnecessary as ECT-001-CB is not recommended for use in pregnant women, and only minimal residual amounts of UM 171 were detected in dorocubicel.”
Not conducted (ICH S9; advanced cancer population)
“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.”
No surrogate; UM171 inactive on mouse HSCs, so human cells used in immunocompromised mice
“The human cell product has been used in these immunocompromised animals, because the applicant explained that UM171 had no activity on mouse HSCs (i.e. homologous murine product not possible).”