A Phase 1/2, First-in-Human, Open Label, Dose Escalation Study Of A CSP Targeting Functional Antibody in Solid Tumors

This study is a first-in-human, Phase 1, open label, multicenter, dose escalation study with expansion at the RP2D, to evaluate the safety, tolerability, and preliminary efficacy of ZB131 in patients with solid tumors where prevalence of CSP expression is high. Approximately 12 to 24 patients will be enrolled in the Dose Escalation Stage; the total number of patients will depend on the dose level at which the RP2D is defined. Patients who meet the eligibility criteria during Screening will enter the treatment period. ZB131 will be given via IV every week. Patients will be treated until disease progression or unacceptable toxicities occur.

This study is a first-in-human, Phase 1, open label, multicenter, dose escalation study with expansion at the RP2D, to evaluate the safety, tolerability, and preliminary efficacy of ZB131 in patients with solid tumors where prevalence of CSP expression is high. Approximately 12 to 24 patients will be enrolled in the Dose Escalation Stage; the total number of patients will depend on the dose level at which the RP2D is defined. Patients who meet the eligibility criteria during Screening will enter the treatment period. ZB131 will be given via IV every week. Patients will be treated until disease progression or unacceptable toxicities occur. Once the RP2D has been established, the Dose Expansion stage will begin to enroll subjects by cohort. For each expansion cohort, subjects will be enrolled in two stages. The first stage includes an evaluation of 12 patients. If 1 or more of 12 patients have a CR or PR, then accrual will continue until a total of 37 patients with measurable disease have been enrolled. Additional patients may be added to ensure 37 subjects with measurable disease are available for evaluation