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GSK to Halt Further Development of Cough Drug After Missing Main Goal

GSK said the drug’s limited benefit is unlikely to transform care after one 50 mg dose worked in only one of two studies.

  • On Friday, GSK announced it will halt development of Camlipixant after the experimental drug failed to meet primary efficacy goals across two Phase 3 trials, sending shares down about 4%.
  • The decision follows inconsistent data from CALM-1 and CALM-2 trials, where the 50mg dose reduced cough frequency in one study but failed in the second, while the 25mg dose missed efficacy targets in both.
  • GSK acquired Camlipixant in a $2 billion deal three years ago through Bellus Health; the failure now complicates efforts to close the gap between analyst forecasts and the company's $40 billion revenue target.
  • Shares of Trevi Therapeutics rose 16% on Friday as the failure removes a competitor; Leerink Partners analyst Roanna Ruiz noted this creates an "open field opportunity" for the company's treatment, Haduvio.
  • GSK will continue testing Camlipixant for irritable bowel syndrome while shifting focus to its oncology portfolio, and the company plans to submit trial data for publication to aid future scientific research.
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GSK stops development of chronic cough drug after late-stage trial miss

·London, United Kingdom
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According to mixed study results, GSK PLc ends the development of the medicine Camlipixant against chronic cough. Investors react disappointed, the share loses significantly in value.

·Düsseldorf, Germany
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WTVB broke the news on Friday, July 17, 2026.
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