Dose Evaluation of MK-1966 in Combination With SD-101 in Participants With Advanced Malignancies (MK-1966-001)

This was a non-randomized, open-label study of MK-1966 used in combination with SD-101 in the treatment of advanced malignancies. The study included an initial Dose Evaluation phase (Part A) to determine the maximum tolerated dose (MTD)/maximum administered dose (MAD) by evaluating Dose Limiting Toxicities (DLTs) of four dose combinations of MK-1966 and SD-101. Following determination of the MTD/MAD, approximately 20 participants each were to be enrolled in two expansion cohorts (Parts B or C) to confirm/refine the MTD/MAD. The study was terminated by the Sponsor before enrollment into Part A concluded and before enrollment into Parts B and C began.