A phase 1 multicenter study was conducted to evaluate the safety and efficacy of APG-115 +/- carboplatin in TP53 wildtype (wt) SGC....95% (21/22) had stabilization of their previously progressive disease. A PR rate of 13% of pts on mono and 25% of patients on combo was observed. The median PFS on pts treated with mono was 11.4 mo....APG-115 monotherapy demonstrates promising antitumor activity among patients with TP53 wt SGC with an acceptable safety profile.