By Joseph Walker
Shares of Vertex Pharmaceuticals sank Thursday, following disappointing study results for a non-opioid painkiller.
Vertex said the drug significantly reduced pain in people with a common form of lower back pain in a Phase 2 study. But patients who got a placebo saw similar improvements- raising concerns about the drug's future and if it will work in a new, larger study needed for approval.
It was a blow to hopes the drug, suzetrigine, could become a big seller.
"We believe the results overall raise major questions about whether the drug can ultimately succeed" in treating a form of back pain that represents about 40% of all chronic pain cases, said RBC Capital Markets analyst Brian Abrahams in a note to clients.
Shares in Vertex recently stood about 12% lower.
Vertex said the Phase 2 study wasn't designed to compare the patients who received its drug with those who received a placebo. Vertex said it will talk with the Food and Drug Administration about how to best design a Phase 3 study in lower back pain.
Vertex's suzetrigine is pending approval to treat acute pain, a different use than the subject of the newly released study, with a decision by the FDA expected by Jan. 30.
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(END) Dow Jones Newswires
December 19, 2024 11:01 ET (16:01 GMT)
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