PMID- 28579415 OWN - NLM STAT- MEDLINE DCOM- 20170818 LR - 20180208 IS - 1556-5653 (Electronic) IS - 0015-0282 (Linking) VI - 108 IP - 1 DP - 2017 Jul TI - Elagolix for the management of heavy menstrual bleeding associated with uterine fibroids: results from a phase 2a proof-of-concept study. PG - 152-160.e4 LID - S0015-0282(17)30362-X [pii] LID - 10.1016/j.fertnstert.2017.05.006 [doi] AB - OBJECTIVE: To evaluate the safety and efficacy of elagolix vs. placebo and elagolix with low-dose E(2)/progestogen add-back therapy. DESIGN: Proof-of-concept, dose-ranging, multiple-cohort study. SETTING: Clinics. PATIENT(S): Premenopausal women with fibroids and heavy menstrual bleeding (menstrual blood loss [MBL] >80 mL per cycle). INTERVENTION(S): Three months' treatment with elagolix alone: 100 mg twice daily (BID), 200 mg BID, 300 mg BID, 400 mg once daily (QD), or 600 mg QD (all but the 600 mg QD arm were placebo controlled); or elagolix plus add-back therapy: 200 mg BID plus continuous low-dose E(2) 0.5 mg/norethindrone acetate 0.1 mg or elagolix 300 mg BID plus E(2) 1 mg continuously and cyclical P 200 mg. MAIN OUTCOME MEASURE(S): Least-squares mean percentage change in MBL; adverse events (AEs). RESULT(S): Mean age was 41.8 years; 73.8% were black; mean baseline MBL was 267 mL. Of randomized women (elagolix alone, n = 160; placebo, n = 50; elagolix with add-back therapy, n = 61), 228 of 271 completed the 3-month treatment period. The MBL percentage change from baseline to last 28 days was significantly greater with elagolix alone (range, -72% to -98%; dose-dependent reduction was highest with 300 mg BID) vs. placebo (range, -8% to -41%); mean percentage changes with add-back regimens were -80% to -85%. Overall AEs were dose independent (elagolix alone, 70.0%-81.3%) but lower with placebo (56.0%) and add-back regimens (55.6%-70.6%). Hot flush was the most common AE (elagolix alone, 45.5%-62.5%; placebo, 12.0%; add-back regimens, 18.5%-26.5%). CONCLUSION(S): Elagolix significantly reduced heavy menstrual bleeding in women with fibroids. Low-dose add-back regimens substantially reduced flushing. CLINICAL TRIAL REGISTRATION NUMBER: NCT01441635. CI - Copyright (c) 2017 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved. FAU - Archer, David F AU - Archer DF AD - Eastern Virginia Medical School, Norfolk, Virginia. Electronic address: archerdf@evms.edu. FAU - Stewart, Elizabeth A AU - Stewart EA AD - Mayo Clinic and Mayo Medical School, Rochester, Minnesota. FAU - Jain, Rita I AU - Jain RI AD - AbbVie Inc, North Chicago, Illinois. FAU - Feldman, Robert A AU - Feldman RA AD - Miami Research Associates, Miami, Florida. FAU - Lukes, Andrea S AU - Lukes AS AD - Carolina Women's Research and Wellness Center, Durham, North Carolina. FAU - North, Janine D AU - North JD AD - AbbVie Inc, North Chicago, Illinois. FAU - Soliman, Ahmed M AU - Soliman AM AD - AbbVie Inc, North Chicago, Illinois. FAU - Gao, Jingjing AU - Gao J AD - AbbVie Inc, North Chicago, Illinois. FAU - Ng, Juki W AU - Ng JW AD - AbbVie Inc, North Chicago, Illinois. FAU - Chwalisz, Kristof AU - Chwalisz K AD - AbbVie Inc, North Chicago, Illinois. LA - eng SI - ClinicalTrials.gov/NCT01441635 PT - Clinical Trial, Phase II PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20170601 PL - United States TA - Fertil Steril JT - Fertility and sterility JID - 0372772 RN - 0 (Hydrocarbons, Fluorinated) RN - 0 (Pyrimidines) RN - 33515-09-2 (Gonadotropin-Releasing Hormone) RN - 5B2546MB5Z (elagolix) SB - IM MH - Adult MH - Combined Modality Therapy/methods MH - Dose-Response Relationship, Drug MH - Female MH - Gonadotropin-Releasing Hormone/antagonists & inhibitors MH - Hormone Replacement Therapy/*methods MH - Humans MH - Hydrocarbons, Fluorinated/*administration & dosage/adverse effects MH - Leiomyoma/*complications/diagnosis/drug therapy MH - Menorrhagia/diagnosis/*drug therapy/*etiology MH - Pilot Projects MH - Pyrimidines/*administration & dosage/adverse effects MH - Treatment Outcome MH - Uterine Neoplasms/*complications/diagnosis/drug therapy OTO - NOTNLM OT - Gonadotropin-releasing hormone antagonist OT - heavy menstrual bleeding OT - leiomyoma OT - nonpeptide OT - oral EDAT- 2017/06/06 06:00 MHDA- 2017/08/19 06:00 CRDT- 2017/06/06 06:00 PHST- 2016/12/27 00:00 [received] PHST- 2017/04/27 00:00 [revised] PHST- 2017/05/03 00:00 [accepted] PHST- 2017/06/06 06:00 [pubmed] PHST- 2017/08/19 06:00 [medline] PHST- 2017/06/06 06:00 [entrez] AID - S0015-0282(17)30362-X [pii] AID - 10.1016/j.fertnstert.2017.05.006 [doi] PST - ppublish SO - Fertil Steril. 2017 Jul;108(1):152-160.e4. doi: 10.1016/j.fertnstert.2017.05.006. Epub 2017 Jun 1.