A Phase 1, First-in-Human Study of CUSP06, a Cadherin-6 (CDH6)-Directed Antibody-Drug Conjugate, in Patients With Platinum-Refractory/Resistant Ovarian Cancer and Other Advanced Solid Tumors
This phase 1 study will evaluate the safety, tolerability, pharmacokinetics, and efficacy of CUSP06 in patients with platinum-refractory/resistant ovarian cancer and other advanced solid tumors.
• Written informed consent provided prior to any screening procedures.
• Male or female patients, ≥18 years of age at the time of obtaining informed consent.
• Patients with histologically or cytologically confirmed advanced solid tumors previously treated with standard of care systemic therapy, or for whom no standard therapy is available.
• Willingness to provide archival tumor tissue, when available. If no archival tissue is available, willingness to undergo a pretreatment biopsy if medically feasible and safe.
• Measurable disease per RECIST v1.1.
• Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 and life expectancy of ≥12 weeks.
• Adequate organ function as defined by:
‣ Absolute neutrophil count (ANC) ≥1.5 x 109/L (1500/µL), without colony-stimulating factor support for the past 14 days.
⁃ Platelets ≥100.0 x 109/L (100 000/µL).
⁃ Hemoglobin ≥9.0 g/dL (without blood transfusion in 2-week period prior to screening).
⁃ Creatinine clearance (CrCl) ≥45 mL/min as calculated by the Cockcroft-Gault method.
⁃ Serum total bilirubin ≤ 1.5 x the upper limit of normal (ULN).
⁃ Aspartate aminotransferase (AST) ≤2.5 x ULN; alanine aminotransferase (ALT) ≤ 2.5 x ULN.
⁃ International normalized ratio (INR) ≤ 1.5; activated partial thromboplastin time (aPTT) ≤ 1.5 x ULN.
⁃ Left ventricular ejection fraction (LVEF) ≥50% as per echocardiography (ECHO) or multi-gated acquisition scan (MUGA).
⁃ Q wave to T wave (QT) interval corrected for heart rate (QTc) ≤480 ms (Fridericia's formula).
⁃ Baseline oxygen saturation on room air ≥ 92%
⁃ Albumin ≥ 3.0 g/dL
• Women of child-bearing potential (WOCBP), defined as a sexually mature woman who has not undergone surgical sterilization or who has not been naturally postmenopausal for at least 12 consecutive months must agree to use a highly effective contraceptive method
• Patients must be willing and able to sign the informed consent form, and to adhere to the study visit schedule and other protocol requirements.