Phase 1/2a Study of BAL101553 as 48-hour Infusions in Patients With Advanced Solid Tumors or Recurrent Glioblastoma

Inclusion Criteria: 1. Age ≥ 18 years 2. Phase 1: Patients with either histologically or cytologically confirmed advanced or recurrent solid tumor, who failed standard therapy or for whom no effective standard therapy is available. Phase 2a: Patients with platinum-resistant/refractory ovarian, fallopian tube or primary peritoneal cancer (high-grade serous, endometrioid, or carcinosarcoma histotypes) or glioblastoma in first relapse. 3. Patients with solid tumors must have measurable disease according to Response Evaluation Criteria in Solid Tumors \[RECIST\] v1.1. Patients with recurrent glioblastoma must have measurable disease defined by contrast-enhancing magnetic resonance imaging. 4. Life expectancy ≥ 12 weeks 5. Acceptable organ and marrow function at baseline (protocol defined laboratory parameters) 6. Patients with solid tumors must have an Eastern Cooperative Oncology Group (ECOG) performance status ≤ 1 and patients with recurrent glioblastoma must have an ECOG performance status ≤ 2. 7. Other protocol-defined inclusion criteria may apply. Exclusion Criteria: 1. Patients with solid tumors who have received chemotherapy, radiotherapy, immunotherapy, or investigational agents within 4 weeks prior to starting study drug or who have not recovered from side effects of prior therapies. Patients with recurrent glioblastoma who have: received radiotherapy within 12 weeks, unless there is a new area of enhancement consistent with recurrent tumor outside the radiation field, or there is histological confirmation of unequivocal tumor progression; received administration of prior antitumor chemotherapy within 4 weeks, or within 6 weeks for nitrosoureas; undergone surgical resection within 4 weeks or a stereotactic biopsy/core biopsy within 1 week prior to starting study drug, or have been treated previously with bevacizumab. 2. Patients who have had prior exposure to BAL101553. 3. Peripheral neuropathy ≥ CTCAE grade 2. 4. Uncontrolled intercurrent illness that would unduly increase the risk of toxicity or limit compliance with study requirements 5. Systolic blood pressure (SBP) ≥ 140 mmHg or diastolic blood pressure (DBP) ≥ 90 mmHg at the screening visit. 6. Blood pressure (BP) combination treatment with more than two antihypertensive medications. 7. Women who are pregnant or breast-feeding. Men or women of reproductive potential who are not willing to apply effective birth control. 8. Other protocol-defined exclusion criteria may apply.