A Study of GEN1106 in Participants With Solid Tumors

This is a first-in-human (FIH), open-label, multicenter, dose escalation and expansion trial in participants with urothelial and other cancers who have metastatic disease to evaluate the safety, pharmacokinetics (PK), pharmacodynamics, and anti-tumor activity of GEN1106.

Key Inclusion Criteria:

• Have progressed on or after standard of care (SoC) therapy, which should include chemotherapy, anti-programmed cell death protein 1 (PD-1)/programmed cell death ligand 1 (PD-L1) therapies, and enfortumab vedotin (EV), if applicable for the tumor type, or for whom there is no available standard therapy likely to provide clinical benefit, and for whom experimental therapy with GEN1106 may be beneficial, in the opinion of the investigator.
• Have measurable disease according to RECIST v1.1.
• Have Eastern Cooperative Oncology Group performance status (ECOG PS) score of 0 to 1 at screening.
• Part 1: Have histologically or cytologically confirmed diagnosis of cancer as specified per protocol.
• Parts 2 and 3: Have histologically or cytologically confirmed diagnosis of metastatic urothelial carcinoma (mUC).

Key Exclusion Criteria:

• Prior treatment with topoisomerase 1 inhibitor-based antibody-drug conjugate (ADC) therapy.
• Treatment with an anticancer agent within 4 weeks or for systemic therapies within 5 half-lives of the drug, whichever is shorter, prior to trial treatment administration.
• Has clinically significant toxicities from previous anticancer therapies that have not resolved to baseline levels or to grade 1 or lower, except for alopecia, anorexia, vitiligo, fatigue, hyperthyroidism, hypothyroidism, and peripheral neuropathy. Anorexia, hyperthyroidism, hypothyroidism, and peripheral neuropathy must have recovered to grade 2.

Note: Other protocol-defined Inclusion and Exclusion criteria may apply.