JAB-21822 in Combination With Cetuximab in Patients With Advanced CRC and Other Solid Tumors With KRAS G12C Mutation

Inclusion Criteria: * Participants must be able to provide an archived tumor sample * Histologically or cytologically confirmed advanced colorectal cancer, advanced small intestinal cancer and advanced appendiceal cancer with KRAS p.G12C mutation * Must have received at least 1 prior standard therapy * Must have at least 1 measurable lesion per RECIST v1.1 * Must have adequate organ function * Must be able to swallow and retain orally administered medication Exclusion Criteria: * Has brain metastases, except if treated and no evidence of radiographic progression or hemorrhage for at least 28 days * Active infection requiring systemic treatment within 14 days * Active HIV, HBV or HCV * Any severe and/or uncontrolled medical conditions * LVEF\<50% assessed by ECHO * QT interval \>470 msec