– RMC-7977 is a reversible, tri-complex RAS inhibitor with broad spectrum activity for both mutant and wild-type (WT) KRAS, NRAS, and HRAS variants.RMC-7977 can lead to tumor regressions and was well tolerated in diverse RAS-addicted preclinical cancer models. RMC-7977 also can inhibit the growth of KRASG12C cancer models.