Abstract: The compound of Formula (I), or pharmaceutically acceptable salts thereof, is useful in, among other things, the treatment of MTAP-deficient lung cancer, such as NSCLC, or MTAP-deficient pancreatic cancer, such as PDAC, or MTAP-deficient esophageal cancer and provides a therapeutic advantage when used in combination with other agents as herein described compared to treatment with each agent when administered alone.

Abstract: The present invention provides diagnostic and prognostic methods for predicting the effectiveness of treatment of a cancer patient with a MAT2A inhibitor. Methods are provided for predicting the sensitivity of tumor cell growth to inhibition by a MAT2A inhibitor, comprising assessing whether the tumor cell is absent an MTAP gene whereby cells that are MTAP null are sensitive to inhibition by MAT2A inhibitors.