This is an open-label, multi-center, sequential groups, dose-escalation study of CBL0137 administered intravenously in participants with metastatic or unresectable advanced solid malignancies.

The primary objective of the study is to determine the maximally tolerated dose (MTD) and recommended Phase 2 dose (RP2D) of CBL0137. The secondary objectives are to describe the dose-limiting toxicity (DLT) and adverse event profile of CBL0137, to describe the pharmacokinetic profile of CBL0137, to document any objective responses to CBL0137. This is a study of CBL0137 with a standard "3+3" design. Escalation will proceed to the MTD based on DLT in the 1st cycle in 1 of 6 participants in a cohort.

Inclusion Criteria:

• Patients must have histological or cytological evidence of a solid neoplasm

• Patients enrolled in the expansion cohort must have at least one measureable lesion as defined by the RECIST 1.1 criteria for patients with systemic tumors or the RANO criteria for patients with gliomas;

• Patients with a systemic tumor must:

  • have metastatic or unresectable advanced solid tumors that have recurred or progressed following standard therapy or
  • no longer be candidates for standard therapy or
  • have tumors for which there is no standard therapy

• Patients with a glioma must:

  • have Grade III (anaplastic astrocytoma, anaplastic oligodendroglioma, anaplastic oligoastrocytoma) disease, Grade IV (glioblastoma) disease, or diffuse intrinsic pontine glioma (DIPG) and;
  • have received prior therapy including radiation and drug therapy and;
  • have documented recurrent disease as defined in the RANO criteria;

• Patients must be ambulatory and have an ECOG Performance Score of 0 or 1;

• Patients or their legal representative must be able to provide written informed consent;

• Patients must have adequate bone marrow reserve as evidenced by:

  • White Blood Cell Count (WBC) > 3,000/µL
  • Absolute Neutrophil Count (ANC) > 1,500/µL
  • Platelet count (PLT) > 75,000/µL
  • Hemoglobin (HGB) > 8.0 gm/dL (patients may be transfused to achieve this HGB level);

• Patients must have adequate hepatic function as evidenced by:

  • Serum AST/ALT < 3X the upper limit of normal (ULN) for the reference lab (< 5X the ULN for patients with known hepatic metastases)
  • Serum bilirubin < 1.5 x the ULN for the reference lab;

Exclusion Criteria:

• Patients with active infection or with a fever > 38.50 C within 3 days of the first scheduled day of dosing;
• Patients with symptomatic CNS metastases who have not undergone surgery and/or radiotherapy and/or who are not neurologically stable;
• Patients with known hypersensitivity to any of the components of CBL0137;
• Patients who are receiving concurrent anticancer therapy;
• Patients receiving enzyme-inducing antiepileptic agents within 14 days prior to the start of study therapy;
• Males with mean QTcF values of > 450 msec and females with QTcF values of > 470 msec following 3 ECGs conducted 5 minutes apart from each other; patients who are known to have congenital prolonged QT syndromes; or patients who are on medications known to cause prolonged QT intervals on ECG;

Please speak with the PI for the complete Inclusion/Exclusion listing.