First-in-Human Study of JNJ-74699157 in Participants With Tumors Harboring the KRAS G12C Mutation

KRAS is one of the most frequently mutated genes in human cancer. KRAS mutations lead to activation of cellular signaling that promotes tumor growth, and KRAS may therefore be a candidate target for anticancer therapy. This study will evaluate JNJ-74699157, a potent and specific, orally bioavailable inhibitor of the glycine-to-cysteine (G12C) mutant KRAS protein, which is found in non-small cell lung cancers and other solid tumor types. This study will enroll participants with advanced solid tumors harboring the KRAS G12C mutation and will be conducted in 2 parts. Part 1 (Dose Escalation) will be carried out in sequential cohorts of single or multiple participants at doses assigned by the study evaluation team to determine the MTD and RP2D of JNJ-74699157. Participants in Part 2 (Dose Expansion) will receive JNJ-74699157 at the RP2D determined in Part 1 to determine the safety and preliminary antitumor activity of the RP2D. Key efficacy assessments include radiographic imaging evaluations, physical examination, and tumor markers. Safety evaluations will include monitoring of adverse events, vital signs, laboratory evaluations, cardiac monitoring and physical examination findings. The study consists of a screening phase, treatment phase, and a post-treatment follow-up phase. An end-of-treatment visit will occur within 30 days of the last dose of study drug or prior to the start of a subsequent anticancer therapy, whichever comes first. The study duration will be up to 4 years.