AUSTIN, TEX. – A new treatment for endometriosis-related pain, Elagolix, showed evidence of being effective long term, according to a study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.
Elagolix, an oral nonpeptide gonadotropin-releasing hormone (GnRH) antagonist, manufactured by AbbVie, would be the first treatment of its kind if approved by the Food and Drug Administration, and would fulfill a needed relief for a more tolerable approach to severe endometriosis patients, according to presenter Eric S. Surrey, MD, medical director at the Colorado Center of Reproductive Medicine, Lone Tree.
“There have been no new medications approved for a long time for systematic endometriosis and there is a huge gap because the current options are expensive, and they are often injectable drugs,” said Dr. Surrey in an interview. “This would be an oral agent, which would be fabulous because it allows for a lot of flexibility and for many patients this could be much less concerning than using something long acting.”
To test the long-term effects of Elagolix, investigators studied 570 women with moderate to severe endometriosis-related pain who had gathered to participate in a previous phase 3, randomized, placebo-controlled trial concerning the drug’s effectiveness.
In the two extension studies, all participants were given either a 150- or 200-mg dose of Elagolix.
Average age of each patient group was between 31 and 34 years, and all groups were majority white, with a mean length of time from surgical diagnosis ranging from 45.5 to 56.6 months.
Patient improvements in dysmenorrhea and nonmenstrual pelvic pain continued between the first 6 months and 12 months of treatment, with a decrease of 46%-77% in the overall number of analgesics taken per day.