A phase 2, open-label, 2-cohort study to evaluate patient preference for nivolumab (NIVO) + relatlimab (RELA) fixed-dose combination (FDC) subcutaneous (SC) vs NIVO + RELA FDC intravenous (IV) and NIVO SC vs NIVO IV in participants with melanoma.

TPS9619 Background: The oncology burden on healthcare resources and patients increases as the number of individuals with cancer grows, necessitating treatment options offering improved convenience to patients. SC delivery of monoclonal antibodies in various cancer indications has previously been shown to be effective, well tolerated, and preferred by patients over IV infusion. In CheckMate 67T (NCT04810078), noninferiority of exposure (time-averaged serum concentration at Day 28 and trough serum concentration at steady state) and efficacy (objective response rate by BICR) were previously reported for NIVO SC 1200 mg + recombinant human hyaluronidase PH20 (rHuPH20) vs IV in patients with locally advanced/metastatic clear cell renal cell carcinoma. RELATIVITY-127 (NCT05625399) is ongoing to establish exposure noninferiority of NIVO + RELA + rHuPH20 FDC SC to IV in patients with previously untreated metastatic/unresectable melanoma. This phase 2, open-label study CA224-1044 (NCT06101134) assesses patient preference for NIVO SC or NIVO + RELA FDC SC vs IV formulations after transitioning from IV to SC in patients with melanoma and aims to further characterize the safety profile of immuno-oncology therapy during IV-to-SC switch. Methods: Cohort 1 includes adult patients with previously untreated stage III (unresectable) or stage IV (metastatic) melanoma who will receive NIVO + RELA FDC IV every 4 weeks (Q4W) for 2 cycles (28-day cycle) followed by NIVO + RELA + rHuPH20 FDC SC Q4W until disease progression, unacceptable toxicity, or a maximum total treatment duration of 2 years, whichever comes first. Cohort 2 includes adult patients with completely resected stage IIB/C, stage III or stage IV melanoma who will receive NIVO IV Q4W for 2 cycles (28-day cycle) followed by NIVO SC + rHuPH20 Q4W until disease recurrence, unacceptable toxicity, or a maximum total treatment duration of 1 year, whichever comes first. The primary endpoint is the proportion of participants preferring the SC route of administration based on question 7 of the Patient Experience and Preference Questionnaire after the Cycle 4 Day 1 dose. This question evaluates patient preference for IV or SC or no preference in treatment administration and was previously used in CheckMate 8KX. Secondary endpoints include safety outcomes such as adverse events (AEs), serious AEs, treatment-related AEs, AEs leading to discontinuation, immune-mediated AEs, other events of special interest, injection/infusion-related AEs, deaths, and laboratory abnormalities. Safety is assessed for IV period, SC period (8 weeks each) and overall study period. Exploratory endpoints include additional measures of patient experience and preference for IV vs SC. The study is recruiting to enroll 50 patients per cohort. Clinical trial information: NCT06101134 .