Phase 1 Study of SL-172154 (SIRPα-Fc-CD40L) in Subjects With Ovarian Cancer

This Phase 1 trial will evaluate the safety, tolerability, pharmacokinetics, anti-tumor and pharmacodynamic effects of SL-172154 and identify the dose and schedule i.e., recommended Phase 2 dose for future development (RP2D). Subjects eligible for enrollment are required to have platinum-ineligible ovarian, fallopian tube, and primary peritoneal cancers. The study design consists of dose escalation cohorts, an optional pharmacodynamic cohort, and an optional dose expansion cohort. In the dose escalation phase of the study, subjects will be enrolled into sequential dose levels. The study may also enroll a pharmacodynamic cohort to obtain additional pharmacodynamic data at one or more dose levels that have completed evaluation for safety without exceeding the maximum tolerated dose (MTD). Subjects enrolled in the pharmacodynamic cohort will not inform dose escalation decisions. A dose expansion cohort may be opened to further characterize safety, tolerability, PK, anti-tumor activity, and pharmacodynamic data to inform the selection of a RP2D.

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