Study of BEBT-607 Tablets in The Treatment of Advanced or Metastatic Solid Tumors With KRAS G12C Mutation

"PhaseⅠa:100mg,200mg,300mg,400mg,600mg or 800mg/day,50mg,100mg,150mg,200mg,300mg or 400mg each time, once a day in the single administration phase and twice a day in the continuous administration phase (only once on the 28th day of the first cycle) for 28 days,28 days is as a treatment cycle.~PhaseⅠb:300mg,400mg or 600mg/day, 150mg,200mg or 300mg each time,twice a day (only once on day 1 and day 28 of the first cycle), continuous administration for 28 days,28 days is as a treatment cycle."