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Merck & Co (MRK) Announced Positive Results From Phase 3 HYPERION Trial of WINREVAIR

By Talha Qureshi | October 02, 2025, 2:55 AM

Merck & Co., Inc. (NYSE:MRK) is one of the Top Blue Chip Stocks to Buy At 52-Week Lows. On September 30, Merck & Co., Inc. (NYSE:MRK) announced  positive results from its Phase 3 HYPERION trial of WINREVAIR in adults recently diagnosed with pulmonary arterial hypertension.

The trial included patients classified as functional class 2 or 3 and at intermediate or high risk of disease progression. Management noted that the drug reduced the risk of clinical worsening events by 76% compared to placebo. Moreover, the benefit of WINREVAIR was seen early, within six weeks of starting treatment, and sustained throughout the trial. The results were consistent across patient subgroups, including those with idiopathic PAH and connective tissue disease. Lastly, the safety profile remained consistent with previous trials.3

Merck & Co., Inc. (NYSE:MRK) is a global healthcare company focused on developing and delivering prescription medicines, vaccines, and animal health products.

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Disclosure: None. This article is originally published at Insider Monkey.

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