Regeneron drops after skin cancer treatment misses late-stage trial goal
Regeneron drops after skin cancer treatment misses late-stage trial goal
ReutersMon, May 18, 2026 at 9:57 AM UTC
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FILE PHOTO: The Regeneron Pharmaceuticals company logo is seen on a building at the company's Westchester campus in Tarrytown, New York, U.S. September 17, 2020. REUTERS/Brendan McDermid//File Photo
May 18 (Reuters) - Shares of Regeneron fell 11.8% premarket on Monday after the company's experimental treatment missed the main goal in a late-stage trial in patients with advanced melanoma, a type of skin cancer.
The drugmaker's fianlimab-cemiplimab combination did not reach statistical significance in improving progression-free survival (PFS), a measure of how long patients live without their advanced melanoma worsening.
Advanced melanoma is a serious form of skin cancer that can spread rapidly to other parts of the body, making it harder to treat.
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The study tested fianlimab and Regeneron's approved drug cemiplimab, sold under the brand name Libtayo, as a first-line treatment.
The combination treatment showed a numeric improvement of 5.1 months in median PFS when compared with Merck's Keytruda, but the difference did not reach statistical significance.
"These results are the worst-case scenario, " said Evercore analyst Cory Kasimov, adding that while the fundamental impact is relatively limited at this point, sentiment would likely weaken further.
(Reporting by Christy Santhosh in Bengaluru; Editing by Tasim Zahid)
Source: “AOL Money”
