SHR-9146

This phase I trial is designed to efficiently identify the dose-limiting toxicity (DLT) and maximum tolerated dose (MTD) for the combination therapy regimen of the IDO1 inhibitor SHR9146 when administered in combination with immune checkpoint PD-1 inhibitor SHR-1210 plus VEGFR inhibitor Apatinib or not in subjects with advanced/metastatic solid tumors. All subjects will receive the same standard SHR-1210 plus Apatinib (only three drugs group)regimen, while SHR9146 in doses increasing from 100 mg twice daily to, potentially, 600 mg twice daily. Once the recommended regimen has been identified, subjects with the selected tumor type will be enrolled into expansion cohorts based upon prior safety and tolerability data.

IDO1 is expressed in a wide variety of human tumors (eg. bladder, breast, colon, DLBCL, HNSCC, lung, ovarian, uterine, renal…), and contributes to tumoral resistance. HTI-1090 (also referred as SHR9146 in nonclinical study reports) is an orally bioavailable, highly potent, novel small-molecule IDO1/TDO dual inhibitor, with favorable preclinical oral bioavailability and safety profiles.