Dose Escalation Study of mRNA-2752 for Intratumoral Injection to Participants in Advanced Malignancies

This is a Phase 1, open-label, multicenter, dose-escalation study of intratumoral injections of mRNA-2752 alone and in combination with intravenously administered immune checkpoint blockade therapy in participants with histologically confirmed advanced or metastatic solid tumor malignancies or lymphoma. The study consists of Dose Escalation and Dose Confirmation Parts, which will occur in Arm A and Arm B, followed by a Dose Expansion Part, which will occur in Arm B, and a Dose Exploration in Arm C as a neoadjuvant therapy for cutaneous melanoma. Participants in Arm A and in Arm B will be enrolled into the Dose Escalation Part and the doses of mRNA-2752 will be administered in a dose escalation regimen until a maximum tolerated dose (MTD) or a recommended dose for expansion (RDE) is identified. When the MTD/RDE is identified, participants with solid tumors or lymphoma with visceral lesions may be enrolled into the Dose Confirmation Part to confirm that the dose is also appropriate for this subgroup.