Phase 1a will consist of 2 study arms: Monotherapy and Paclitaxel combo. Phase 1a dose escalation will evaluate the safety and tolerability of NX-1607 in adult patients with advanced solid tumors for which standard therapy with proven clinical benefit does not exist, is no longer effective, or is not appropriate. Indications for monotherapy include platinum resistant epithelial ovarian cancer (EOC), gastric/gastroesophageal junction (GEJ) cancer, squamous cell carcinoma of the head and neck (HNSCC), recurrent and either metastatic or unresectable melanoma, non-small cell lung cancer (NSCLC), metastatic castration-resistant prostate cancer (mCRPC), malignant pleural mesothelioma (MPM), triple-negative breast cancer (TNBC), locally advanced or metastatic urothelial cancer, cervical cancer, and microsatellite stable colorectal cancer (MSS CRC), and diffuse large cell B-cell lymphoma (DLBCL) including patients with Richter transformation (DLBCL-RT). Indications for paclitaxel combo may include, but are not limited to, platinum-resistant EOC, gastric/GEJ cancer, HNSCC, NSCLC, TNBC, locally advanced or metastatic urothelial cancer, and cervical cancer at the Sponsor’s discretion.
Phase 1b will investigate the efficacy of NX-1607 monotherapy at the dose selected in Phase 1a in up to 8 cohorts of patients with select advanced malignancies for which standard therapy, including immunotherapy, with proven clinical benefit does not exist, is no longer effective, or is not appropriate. Indications include platinum-resistant EOC, including primary peritoneal and fallopian tube carcinoma, advanced gastric/GEJ cancer, HNSCC, recurrent and either metastatic or unresectable melanoma, advanced NSCLC, mCRPC, mixed solid tumor cohort indications consisting of patients with MPM, TNBC, locally advanced or metastatic urothelial cancer, cervical cancer, or MSS CRC, and DLBCL including patients with DLBCL-RT.
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