Lyra Therapeutics Reports Topline Results from Phase 3 ENLIGHTEN 1 Trial for LYR-210 in Chronic Rhinosinusitis

ENLIGHTEN 1 trial did not meet its primary endpoint

Company plans to evaluate full dataset and path forward

WATERTOWN, Mass., May 06, 2024 (GLOBE NEWSWIRE) -- Lyra Therapeutics, Inc. (Nasdaq: LYRA) (“Lyra” or the “Company”), today announced topline results from the Company’s Phase 3 ENLIGHTEN 1 trial evaluating LYR-210 for the treatment of chronic rhinosinusitis (CRS). ENLIGHTEN 1 did not meet its primary endpoint of demonstrating statistically significant improvement compared to sham control in the composite score of the three cardinal symptoms (3CS) of CRS (nasal obstruction, nasal discharge, facial pain/pressure) at 24 weeks. ENLIGHTEN 1 is one of two Phase 3 clinical trials evaluating LYR-210, a bioabsorbable sinonasal implant (7500µg mometasone furoate), as a six-month treatment for chronic rhinosinusitis (CRS).

“We are surprised and disappointed by the ENLIGHTEN 1 topline results,” said Maria Palasis, Ph.D., President and Chief Executive Officer, Lyra Therapeutics. “We are moving as quickly as possible to evaluate the full dataset to better understand these findings in order to determine our path forward.”

At 24 weeks, the ENLIGHTEN 1 trial demonstrated the following results compared to baseline, which did not achieve statistical significance:

• In the primary efficacy analysis, treatment with LYR-210 resulted in a mean (standard deviation; SD) improvement in the 3CS score of 2.13 (2.17) points, compared to 2.06 (2.14) points in sham control.
• In the intent-to-treat (ITT) population, treatment with LYR-210 resulted in a mean (SD) improvement in the 3CS score of 2.35 (2.28) points, compared to 1.89 (2.07) points in sham control.
• In the ITT population, treatment with LYR-210 resulted in a mean (SD) improvement in the Sino-Nasal Outcome Test (SNOT-22) score of 20.2 (21.38) points, compared to 15.70 (18.55) points in sham control.
• Ethmoid sinus opacification (evaluated by computed tomography (CT) scans), did not achieve statistically significant improvement after treatment with LYR-210 compared to sham control.

LYR-210 was generally well tolerated, with no product-related serious adverse events. The most commonly reported adverse events in the study population were epistaxis, nasal odor, upper respiratory tract infection and sinusitis.