Lilly Can Rest Easy As Tirzepatide Scores Phase III Sleep Apnea Win

Topline results from two studies in obstructive sleep apnea among obese adults showed efficacy crossing the 50% threshold that physicians have called clinically meaningful.

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Fresh off its approval in the fourth quarter of 2023 for the treatment of obese and overweight adults, Eli Lilly and Company’s Zepbound (tirzepatide) looks likely to win approval in a related disease area, moderate-to-severe obstructive sleep apnea (OSA) in adults with obesity, thanks to positive topline Phase III results.

The Indianapolis-based drug maker reported on 17 April results from two SURMOUNT-OSA trials showing that tirzepatide, administered at 10mg or 15mg, significantly reduced the apnea-hypopnea index (AHI) compared with placebo, the primary endpoint for the two studies, which respectively tested the drug in patients not on continuous positive airway pressure (CPAP) therapy and patients who were on CPAP

Key Takeaways
  • Eli Lilly reported positive topline results from two Phase III trials of tirzepatide in moderate-to-severe obstructive sleep apnea among adults with obesity.

  • The results of both trials showed greater than 50% reductions in the apnea-hypopnea index, both for patients using CPAP machines and those not using them

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