Viatris Inc. (Nasdaq: VTRS), a global healthcare company, today announced that a randomized, double-masked, vehicle-controlled, Phase 3 study to evaluate the efficacy and safety of pimecrolimus 0.3% (MR-139) ophthalmic ointment in subjects with blepharitis, did not meet its primary endpoint of complete resolution of debris after six weeks of twice daily dosing.

Viatris Chief R&D Officer Philippe Martin said:

“Given that the study did not meet its objective for patients suffering from blepharitis, we are evaluating the appropriate next steps for the Phase 3 program, which may include revising the planned additional Phase 3 study. Thank you to the patients and investigators who contributed to the trial.”

The Company is focused on delivering novel therapies like Tyrvaya® and RYZUMVI®, while progressing a differentiated pipeline that addresses unmet needs in anterior segment conditions. In June 2025, Viatris announced positive top-line results from its Phase 3 LYNX-2 trial of MR-142 in keratorefractive patients experiencing visual disturbances under mesopic, low-contrast conditions. The Company also announced positive top-line results from its second pivotal Phase 3 VEGA-3 Trial of MR-141 in treating presbyopia.

About the MR-139 3001 Phase 3 Study:  The MR-139 3001 Phase 3 trial consisted of a randomized, placebo-controlled, double-masked prospective study, with a total of 477 patients who were randomized to receive either MR-139 or placebo, self-administered to the eyelids twice daily, treated and observed over 12 weeks. For more information on the MR-139 study design, refer to ClinicalTrials.gov (NCT06400511).