pf06651600

AMP423 is a naphthyl derivative of 2-cyanoaziridine-1-carboxamide with structural similarity to the pro-oxidant anti-tumor agent imexon. AMP423 was active in SCID mice bearing 8226 S myeloma and SU-DHL-6 B-cell lymphoma tumors, with a median tumor growth delay (T-C) of 21 days (P = 0.0002) and 5 days (P = 0.004), respectively, and a median tumor growth inhibition (T C) of 33.3% (P = 0.03) and 82% (P = 0.01), respectively. In non-tumor-bearing mice, AMP423 was not myelosuppressive.

PF-06651600 is a potent and selective JAK3 inhibitor.

Ritlecitinib (PF-06651600) 是一种口服有效的选择性JAK3抑制剂，IC50值为 33.1 nM,不影响JAK1 2的活性。