Analysis of safety, tolerability, and PK data will provide information that will guide future development of AB0024.

This is a first-in-human, open-label, sequential dose escalation study to evaluate AB0024 in patients with advanced solid tumors. The study will consist of two parts: Part A will be a dose escalation, and Part B will be a dose expansion.The primary objective of this study is to characterize the safety, tolerability, and PK of AB0024 after multiple IV administrations in patients with advanced solid tumors. The secondary objectives are to measure the tumor response by modified RECIST and to evaluate the formation of anti-AB0024 antibodies.

Patients will receive infusions of AB0024 every two weeks. Patients will be seen weekly for safety assessments and collection of blood samples. Patients who do not show evidence of disease progression by clinical assessment or by CT or MRI may continue receiving AB0024 every 2 weeks until disease progression (clinical or radiographic), study drug intolerance, or withdrawal of consent.

Inclusion Criteria:

• Histologically or cytologically confirmed advanced malignant solid tumor that is refractory to, intolerant of, or for which no standard of therapy is available
• Measurable or evaluable disease
• ECOG Performance Status of ≤2
• No known active central nervous system (CNS) tumors or CNS metastases
• Adequate organ function

Exclusion Criteria:

• Myocardial infarction within the last 6 months of study Day 1, symptomatic congestive heart failure (New York Heart Association Classification > Class II), unstable angina, or unstable cardiac arrhythmia requiring medication
• History of surgery within 28 days prior to enrollment or anticipated surgery during the study period
• Anti-tumor therapy (chemotherapy, antibody therapy, molecular targeted therapy, retinoid therapy, hormonal therapy) within 28 days of study Day 1 (six weeks for nitrosoureas, mitomycin C, antibodies, or molecular agents with t½ >10 days); (concurrent use of hormone therapy for breast or prostate cancer is permitted)
• Treatment with immune modulators including, but not limited to, cyclosporine and tacrolimus within two weeks prior to enrollment
• Concurrent or prior (within 30 days of study Day 1) anticoagulation therapy; (low-dose warfarin [<2 mg/day] for prophylaxis against central venous catheter thrombosis is allowed)
• Patient with tumor that is infiltrating or invading a major blood vessel