In Vitro: Olutasidenib (FT-2102) potently inhibits 2-HG production by multiple IDH1-R132 mutants (R132H, R132C, R132G, R132L), suggesting Olutasidenib (FT-2102) could be efficacious against most IDH1-R132 mutant-expressing tumors. Olutasidenib (FT-2102) is highly selective for IDH1 isoforms, showing no appreciable inhibition against wild-type IDH1 (> 20 µM) and IDH2 mutants (R172K and R140Q: both > 20 µM).
In Vivo: Olutasidenib (FT-2102, three oral doses (12.5, 25, and 50 mg/kg) in 12-hour intervals) exhibits potent anti-tumor activity in HCT116-IDH1-R132H/+ xenograft bearing female BALB/c Nude mice.