• Eligible Phase 1 patients are adults who have a confirmed locally advanced or metastatic tumors (solid tumors or lymphoma) that have relapsed following standard therapy or progressed through standard therapy or who have a disease for which no standard effective therapy exists.

• Eligible Phase 2 patients in cohorts M1 to M3 are adults who are known to have the ARID1A mutation by next-generation sequencing (NGS) testing; have measurable disease per Response Evaluation Criteria in Solid Tumors 1.1 and who have confirmed relapsed urothelial or other advanced/metastatic solid tumors (M1), ovarian clear cell carcinoma (M2), or endometrial carcinoma (M3).

• Eligible Phase 2 patients in Cohort M4 are adults who have either relapsed or refractory PTCL (at least 10 patients) or DLBCL (up to 10 patients), including patients with documented GCB DLBCL with EZH2 hotspot mutation. Patients with PTCL must have at least 1 prior line of therapy and patients with DLBCL must have at least 2 prior lines of standard therapy; and are not considered candidates to receive CAR-T or ASCT therapy.

• Eligible Phase 2 patients in Cohort M5 are adults who are known to the have the BAP1 loss, have malignant pleural or peritoneal mesothelioma, and have progressed on at least 1 prior line of active therapy.

• Eligible Phase 2 patients in Cohort M6 are adults who have mCRPC with measurable soft tissue disease with CT scan as defined by PCWG3 criteria, have baseline testosterone levels ≤ 50 ng/dL (≤ 2.0 nM) and have surgical or ongoing medical castration and who have progressed on at least 1 androgen-receptor signaling inhibitor and at least 1 taxane-based chemotherapy (cabazitaxel, France only).

• Eligible Phase 2 patients in Cohort M7 are adults with recurrent, advanced ARID1A WT endometrial carcinoma confirmed by NGS testing and have measurable disease per Response Evaluation Criteria in Solid Tumors 1.1 Patients will be enrolled with maximum up to 2 prior lines of systemic therapy for treating endometrial carcinoma that must include at least one treatment line with systemic platinum-based chemotherapy in advanced/ recurrent disease setting, and anti-programmed cell death protein 1 (PD-1)/ anti-programmed death-ligand 1 (PD-L1) therapy, either in combination or separately, unless these are contraindicated or are not locally accessible.

• Eligible Part 1 and Part 2 patients in Cohort M8 are adults who have mCRPC with measurable soft tissue disease as per PCWG3 criteria, have baseline testosterone levels ≤ 50 ng/dL (≤ 2.0 nM), have surgical or ongoing medical castration or hormone sensitive prostate cancer (HSPC) disease stage. In addition, Eligible part 1 patients in Cohort M8 may have received abiraterone treatment in mCRPC while eligible part 2 patients in Cohort M8 must have received abiraterone treatment in mCRPC. In addition, only for M8 Part 1: Patients may have received no more than one previous regimen of taxane-based chemotherapy in mCRPC or HSPC setting. For M8 Part 2: Patients may have received no more than one previous regimen of taxane-based chemotherapy in HSPC setting. Patients for both M8 Part 1 and M8 Part 2 must have evidence of prostate cancer progression (per PCWG3) and must have ongoing ADT (androgen deprivation therapy) with a GnRH analogue, antagonist or bilateral orchiectomy (i.e., surgical or medical castration).

• All patients will have Eastern Cooperative Oncology Group (ECOG) performance status of ≤ 1 and adequate organ function.