The novel agent VMT01 is designed to target and deliver 212Pb to MC1R-expressing tumors like metastatic melanoma.
VMT01 has been granted a fast track designation from the FDA for the treatment of MC1R-expressing unresectable or metastatic melanoma.1
Fast track designation is intended to expedite the development and review of agents that treat serious conditions and fill unmet medical needs. With this designation, Perspective Therapeutics, the sponsor, can have more frequent interactions with the FDA, and the application of VMT01 may be eligible for accelerated approval, priority review, and rolling review.
“We are pleased with the FDA’s recognition of the need for additional treatment options for patients with metastatic melanoma,” said Markus Puhlmann, MD, chief medical officer of Perspective Therapeutics, in a press release. “We are dedicated to working closely with the agency to accelerate VMT01's clinical development. Having recently completed the observation period for dose limiting toxicity in 7 patients enrolled in cohort 2 of our phase 1/2a study, we look forward to sharing safety observations with the safety monitoring committee and in a scientific forum later this year. Additionally, pending institutional review board approval, we plan to open a VMT01/anti-PD-1 combination cohort.”
VMT01 is being investigated in a phase 1/2 study. The trial is currently recruiting across 9 locations in Florida, Iowa, Kentucky, Minnesota, Missouri, Nebraska, Pennsylvania, and Wisconsin. Currently, an estimated 52 patients are enrolled.2
The study’s primary end points are incidence of treatment-related adverse effects, laboratory abnormalities, dose-limiting toxicities, and objective response rate. Secondary end points include pharmacokinetics, duration of response, progression-free survival, and overall survival.
In the dose-escalation portion of the study, patients are receiving intravenous (IV) 203Pb VMT01 as an imaging agent. Those who have positive uptake of 203Pb VMT01 then are being treated with a fixed dose of IV 212PB VMT01 between 111 and 555 MBq every 8 weeks for up to 3 doses. In the dose-expansion portion, patients are receiving a fixed dose of IV 212PB VMT01at the recommended phase 2 level and schedule every 8 weeks.
To be eligible for study enrollment, patients must have stage IV or unresectable stage III melanoma that has progressed on at least 1 prior line of treatment, an ECOG performance status of 2 or lower, a life expectancy of at least 3 months, and sufficient organ function. Those with an active secondary malignancy, active infection, or brain metastasis are not eligible for participation.
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