Description:
The primary objectives of the Dose Escalation Phase are to assess the safety and pharmacokinetics (PK) in order to determine a maximally tolerated dose (MTD) or recommended phase 2 dose (RP2D) of REGN4018 as monotherapy and in combination with cemiplimab. In the Dose Expansion Phase, the primary objectives are to assess the preliminary efficacy of REGN4018 as monotherapy and in combination with cemiplimab, (separately by cohort) as determined by the objective response rate (ORR) by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1. The secondary objectives of the Dose Escalation Phase are to assess the preliminary efficacy of REGN4018 as monotherapy and in combination with cemiplimab (separately by cohort) as determined by ORR by RECIST 1.1. In the Dose Expansion Phase, the secondary objectives are to characterize the safety profile in each expansion cohort and characterize the PK of REGN4018 as monotherapy and in combination with cemiplimab. In both the Dose Escalation and Dose Expansion Phases, secondary objectives are to assess preliminary efficacy of REGN4018 as monotherapy and in combination with cemiplimab (separately by cohort) as measured by ORR based on immune based therapy RECIST (iRECIST), best overall response (BOR), duration of response (DOR), disease control rate, complete response (CR) rate and progression-free survival (PFS) based on RECIST 1.1 and iRECIST, to assess efficacy of REGN4018 as monotherapy and in combination with cemiplimab as measured by CA-125 level and immunogenicity of REGN4018 and cemiplimab.