Results suggest the potential of this oral therapy to address the unmet clinical need for long-term medical treatment for endometriosis.
Myovant Sciences and Pfizer recently announced positive results of the phase 3 SPIRIT 1 and SPIRIT 2 studies evaluating the investigational combination therapy of relugolix, estradiol and norethindrone acetate (Myfembree; Myovant and Pfizer) for moderate to severe endometriosis-associated pain.1
In both studies, 75% of women using the once daily relugolix combination therapy experienced a significant reduction in dysmenorrhea, compared to 27% and 30% of women in the placebo groups at Week 24, respectively (both p < 0.0001). Relugolix combination therapy also significantly reduced non-menstrual pelvic pain in 59% and 66% of women, compared to 40% and 43% in the placebo groups (p <0.0001).2
In SPIRIT 1 and 2, the relugolix combination therapy group also showed reductions in dyspareunia and opioid use compared to the placebo groups. Additionally, more women undergoing relugolix combination therapy were opioid free at Week 24 compared with placebo (86% and 82% vs 76% and 66%, respectively).2
The most frequently reported adverse events by women in both the relugolix combination therapy and placebo groups included headaches, nasopharyngitis, and hot flashes.
Currently, the relugolix combination tablet (relugolix 40 mg, estradiol 1.0 mg, and norethindrone acetate 0.5 mg) is available in the United States as Myfembree for the management of uterine fibroid-related heavy menstrual bleeding in premenopausal women.
“The data [from SPIRIT 1 and 2] underscore the value relugolix combination therapy may provide as a potential new treatment option for women with endometriosis-associated pain,” said Juan Camilo Arjona Ferreira, MD, chief medical officer of Myovant Sciences.1
According to the studies’ authors, “this oral therapy has the potential to address the unmet clinical need for long-term medical treatment for endometriosis, reducing the need for opioid use or repeated surgical treatment.”2
Data from SPIRIT 1, SPIRIT 2, and an open-label extension study were included in a supplemental New Drug Application for the relugolix combination tablet for the management of moderate to severe endometriosis pain with a target Prescription Drug User Fee Act of August 6, 2022.
References
S4E3: Myfembree for moderate-to-severe endometriosis pain: Potential for adolescents
March 2nd 2022In this episode of Pap Talk, Contemporary OB/GYN® Associate Editor Lindsey Carr sat down with Jessica Shim, MD, an attending at in the Division of Gynecology, Department of Surgery, Boston Children’s Hospital; Harvard Medical School Boston, Massachusetts, to discuss Myfembree (relugolix, estradiol, and norethindrone acetate tablets; Myovant Sciences, Pfizer) and its possible approval in May 2022.
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S4E1: New RNA platform can predict pregnancy complications
February 11th 2022In this episode of Pap Talk, Contemporary OB/GYN® sat down with Maneesh Jain, CEO of Mirvie, and Michal Elovitz, MD, chief medical advisor at Mirvie, a new RNA platform that is able to predict pregnancy complications by revealing the biology of each pregnancy. They discussed recently published data regarding the platform's ability to predict preeclampsia and preterm birth.
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