A first-in-human phase 1 study of LY3537982, a highly selective and potent KRAS G12C inhibitor in patients with KRAS G12C-mutant advanced solid tumors (AACR 2023)
LY3537982 demonstrated a favorable safety profile, including the absence of high-grade liver toxicity, and tolerance in pts previously intolerant to other KRAS G12C inhibitors. Preliminary efficacy was observed with LY3537982 monotherapy across multiple tumor types. Updated data in more than 100 pts, including data in combination with pembrolizumab and cetuximab will be presented.Table: Preliminary LY3537982 Monotherapy EfficacyNSCLC (KRAS G12Ci naïve)(N=5)NSCLC(Prior KRAS G12Ci treated) (N=11)CRCd(N=17)PANCd(N=8)Other tumor typesd,f(N=15)Efficacy Evaluablea, n5915811ORR, n (%)3 (60%)01 (7%)3 (38%)4 (36%)BOR, n (%)PR, n (%)3 (60%)c01 (7%)e3 (38%)e4 (36%)gSD, n (%)1 (20%)6 (67%)13 (87%)4 (50%)6 (55%)PD, n (%)1 (20%)3 (33%)1 (7%)1 (13%)1 (9%)DCRb, n (%)4 (80%)6 (67%)14 (93%)7 (88%)10 (91%)Abbreviations: CRC, colorectal cancer; NSCLC, non-small cell lung cancer; PANC, pancreatic cancera Efficacy evaluable pts are those who had at least one post-baseline response assessment or had discontinued treatmentb DCR includes PR+SDc 3 NSCLC pts have unconfirmed PRs, ongoing and pending confirmation as of the data cut-off dated All pts KRAS G12C inhibitor naïve, prior KRAS G12C inhibitor therapy not permitted for tumor types other than NSCLCe 1 CRC pt and 1 PANC pt have unconfirmed PR, ongoing and pending confirmation as of the data cut-off datef Other tumor types include cholangiocarcinoma (n=4), chondrosarcoma (n=1), jejunal adenocarcinoma (n=1), large cell neuroendocrine of lung (n=1), nasal malignant melanoma (n=1), ovarian cancer (n=3), salivary adenoid cystic carcinoma (n=1), small intestine cancer (n=1), tracheal basaloid squamous cell carcinoma (n=1), and upper tract urothelial carcinoma (n=1)g PRs observed in pts with tracheal basaloid squamous cell carcinoma, cholangiocarcinoma, nasal malignant melanoma, and ovarian cancer (1 each)