Mithra Announces Positive Top-line Results of Estelle® Phase III Oral Contraceptive Study in U.S/Canada

  • Primary efficacy endpoint indicates excellent contraceptive efficacy, with a Pearl Index (PI) of 2.41 per 100 women, in line with expectations
  • Key secondary endpoints achieved, including excellent bleeding profile, cycle control, quality of life and safety and tolerability
  • Data in line with previously announced Phase III trial in EU / Russia confirming Estelle’s®outstanding profile as a novel, next-generation combined oral contraceptive
  • Filing with U.S. and EU regulatory agencies anticipated by year end

Liège, Belgium, 30 January 2019, 07:00 CET – Mithra (Euronext Brussels: MITRA), a company dedicated to Women’s Health, today announced that its Phase III Estelle® study conducted in the United States and Canada successfully met its primary efficacy endpoint.

Efficacy is well in line with expectations, similar to a recently FDA approved combined hormonal contraceptive (Annovera™ PI 2.98 [95% Confidence Interval 2.13-4.06]) per 100 woman-years of use) and to Lo-Loestrin® (PI 2.92 [95% Confidence Interval 1.94-4.21]), one of the best-selling Combined Oral Contraceptives (COC) in the United States with USD 527.7 million sales in 2018 (15% yoy growth). Estelle® is Mithra’s COC candidate, composed of Estetrol (E4) 15 mg and drospirenone (DRSP) 3 mg.