PMV Pharmaceuticals Reports Interim Success with Rezatapopt

Interim Data Highlights from the PYNNACLE Trial

PMV Pharmaceuticals, Inc. (“PMV Pharma” or the “Company”; Nasdaq: PMVP), a leader in precision oncology, has announced interim findings from the pivotal Phase 2 portion of its PYNNACLE clinical trial. The trial is focused on the efficacy of rezatapopt in treating various solid tumors expressing the TP53 Y220C mutation. This innovative therapy aims to unleash the potential of p53, a crucial tumor-suppressor protein, in addressing this significant medical need.

Noteworthy Clinical Outcomes

The PYNNACLE trial has produced promising results, with confirmed responses observed in eight different solid tumor types, including ovarian, lung, breast, endometrial, head and neck, colorectal, gallbladder, and ampullary carcinoma. Among the 97 evaluable patients treated with rezatapopt, the overall response rate (ORR) reached 33%, illustrating the drug’s potential effectiveness across multiple cancers. Furthermore, in the ovarian cancer subgroup, an even more encouraging ORR of 43% was reported, paired with a median duration of response of 7.6 months. These statistics underscore the drug's promise in treating difficult cancer types.

Safety Profile of Rezatapopt

Safety assessments revealed that treatment-related adverse events (TRAEs) were predominantly mild to moderate in nature. Nausea, fatigue, increased blood creatinine, and elevated alanine aminotransferase levels were the most common TRAEs, occurring in over 15% of patients. The incidence of serious TRAEs (Grade 3) remained low, and all cases resolved during treatment, confirming the generally manageable safety profile of rezatapopt.

Regulatory and Future Development Plans

PMV Pharma has engaged with the U.S. Food and Drug Administration (FDA) regarding the initial New Drug Application (NDA) submission strategy for platinum-resistant/refractory ovarian cancer. Plans are in place to enroll an additional 20-25 patients who have undergone standard prior treatments by early 2026. The Company is on track to submit the NDA by early 2027, aligning with its commitment to address urgent patient needs.

Investor Engagement and Upcoming Presentations

To keep stakeholders informed, PMV Pharma is organizing an investor webinar to discuss the interim findings from the PYNNACLE trial. The event will occur at 8:00 AM ET, featuring insights from PMV Pharma’s management team. This initiative reflects the Company's dedication to transparency and stakeholder engagement.

About Rezatapopt and Its Mechanism

Rezatapopt (PC14586) stands out as a first-in-class small molecule designed to reactivate mutant p53 proteins, specifically targeting the p53 Y220C mutation. By restoring the wild-type function of this crucial tumor suppressor, rezatapopt aims to combat tumor growth effectively. The drug has received Fast Track designation from the FDA, highlighting its potential impact on patients with locally advanced or metastatic solid tumors.

Investigational Insights from the PYNNACLE Trial

The PYNNACLE trial is structured to assess the safety, efficacy, and pharmacokinetics of rezatapopt in patients with advanced solid tumors harboring a TP53 Y220C mutation. This trial comprises a Phase 1 portion that identifies the maximum tolerated dose and a registrational Phase 2 expansion involving multiple cancer cohorts. The findings thus far indicate a strong potential for rezatapopt in treating various malignancies.

Company Background and Vision

PMV Pharma is pioneering the development of tumor-agnostic therapies that target TP53 mutations, which are prevalent in nearly half of all cancers. The company leverages over four decades of expertise in p53 biology to develop therapies aimed at restoring the function of this vital protein. With a headquarters in Princeton, New Jersey, PMV Pharma is committed to advancing innovative treatments that address significant unmet medical needs.

Frequently Asked Questions

What is rezatapopt and its significance?

Rezatapopt is a first-in-class therapy aimed at reactivating mutant p53 proteins, which are crucial in preventing tumor growth in cancers.

What are the key findings from the PYNNACLE trial?

The trial revealed an overall response rate of 33%, with 43% in ovarian cancer, highlighting rezatapopt's potential in various solid tumors.

When does PMV Pharma plan to submit its NDA?

The NDA submission for platinum-resistant/refractory ovarian cancer is anticipated by the end of the first quarter of 2027.

How has the safety of rezatapopt been characterized?

Most treatment-related adverse events have been mild to moderate, with serious side effects being rare and manageable.

What can we expect from PMV Pharma going forward?

PMV Pharma aims to continue its clinical development of rezatapopt and plans to conduct additional patient enrollments in the coming years.

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