Ospemifene, an Oral SERM for Dyspareunia of Menopause: Is It

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Ospemifene, an Oral SERM for Dyspareunia of Menopause: Is It SUPPLEMENT TO This activity is supported by an educational grant from Duchesnay. February 2019 CME credit is awarded upon successful completion of the posttest and evaluation. To access posttest and evaluation, visit Ospemifene, an oral www.worldclasscme.com/nonestrogenoraltherapy World Class CME is accredited by the Accreditation Council SERM for dyspareunia for Continuing Medical Education to provide continuing medical education for physicians. of menopause: World Class CME designates this journal-based CME activity for a maximum of 1.0 AMA PRA Category 1 Credit™. Is it being underutilized? Physicians should claim only the credit commensurate with the extent of their participation in the activity. Audience: This activity was planned for obstetricians and Vulvovaginal atrophy: gynecologists and women’s health care providers. an undertreated disorder Faculty Program Director Steven R. Goldstein, MD, CCD, NCMP, FACOG James A. Simon, MD, CCD, NCMP, IF, FACOG Professor of Obstetrics and Gynecology Clinical Professor New York University School of Medicine George Washington University School of Medicine Director of Gynecological Ultrasound President and Medical Director Co-Director of Bone Densitometry and Body Composition IntimMedicine Specialists® Department of Obstetrics and Gynecology Washington, District of Columbia New York University Medical Center New York, New York strogen and androgen deficiency from menopause Author causes vulvovaginal and urogenital changes and a James A. Simon, MD, CCD, NCMP, IF, FACOG E Clinical Professor plethora of symptoms, most prominently dyspareunia. The George Washington University School of Medicine nomenclature recently has been expanded to genitourinary President and Medical Director syndrome of menopause (GSM). IntimMedicine Specialists® Reproductive hormone deficiency leads to vulvar and Washington, District of Columbia vaginal thinning, loss of rugal folds, diminished elastic- Learning Objectives ity, diminished vaginal glycogen, and decreased acidity At the conclusion of this activity, the participant will be (increased pH) of the vaginal secretions, thereby reducing able to: the vagina’s natural defenses.1 1. Understand the pathophysiology of dyspareunia due to Few women with GSM report their symptoms to their vulvovaginal atrophy (VVA) of menopause. health care professionals,2 and conversely most health care 2. Appreciate the underrecognition and undertreatment professionals do not sufficiently query patients or inform of dyspareunia due to VVA. them of their therapeutic options. Furthermore, class label- 3. Discuss efficacy results of randomized placebo controlled trials of ospemifene. ling of most available treatments has emphasized unsub- 3 4. Understand the adverse events associated with stantiated risks (ie, increased endometrial cancer, stroke, ospemifene. myocardial infarction [MI], deep vein thrombosis [DVT], 5. Appreciate the safety data of ospemifine as well as pulmonary embolism [PE], probable dementia, and invasive other oral selective estrogen receptor modulators and breast cancer), thus resulting in only 7% of symptomatic estrogens. women using any pharmacologic agent.4 Date of Original Release: February 1, 2019 CLINICAL DEVELOPMENT AND FDA APPROVAL Date Credits Expire: January 31, 2022 Until recently, all available vulvovaginal atrophy (VVA)/GSM treatments were systemic or local steroid hormones (estradiol, conjugated estrogens, dehydroepiandrosterone AVAILABLE AT WWW.MDEDGE.COM/OBGYN Supplement to OBG MANAGEMENT I February 2019 S1 OSPEMIFENE, AN ORAL SERM FOR DYSPAREUNIA OF MENOPAUSE [DHEA]). Fear of estrogens from the “class labeling” and the nuisance of vaginal administration undermines utilization Conflict of interest disclosure for some women. Steven R. Goldstein, MD Ospemifene, a third-generation selective estrogen Consultant: Cook Ob/Gyn, Cooper Surgical, IBSA, Pfizer GYN Advisory Board: AbbVie, Allergan, AMAG, Shionogi, receptor modulator (SERM) originally developed for osteo- TherapeuticsMD porosis, has estrogenic effects on bone, lipids, and vagi- Speakers Bureau: AMAG, Duchesnay, TherapeuticsMD nal tissue while remaining antiestrogenic or neutral in the Equipment Loan: GE Ultrasound breast and endometrium, respectively.5 Multiple phase 3, placebo-controlled, clinical trials6,7 resulted in US Food and James A. Simon, MD Advisory Board/Consultant: AbbVie, Inc. (North Chicago, Drug Administration (FDA) approval for moderate to severe IL), Allergan, Plc (Parsippany, NJ), AMAG Pharmaceuticals, dyspareunia from vulvovaginal atrophy of menopause. Inc. (Waltham, MA), Amgen (Thousand Oaks, CA), The American College of Obstetricians and Gynecologists Ascend Therapeutics (Herndon, VA), Bayer HealthCare (ACOG) endorsed ospemifene (Level A evidence) as first-line Pharmaceuticals Inc. (Whippany, NJ), CEEK Enterprises, LLC. therapy for dyspareunia noting absent endometrial stimu- (Cambridge, MA), Covance Inc., (Princeton, NJ), Millendo 8 Therapeutics, Inc. (Ann Arbor, MI), Mitsubishi Tanabe lation. The most common adverse reactions in these ospe- Pharma Development America, Inc. (Jersey City, NJ), ObsEva mifene trials versus placebo were hot flashes and sweating SA (Geneva, Switzerland), Radius Health, Inc. (Waltham, (9.1% vs 3.2%), and muscle spasms (3.2% vs 0.9%), mostly MA), Sanofi S.A. (Paris, France), Sebela Pharmaceuticals, Inc. leg cramps.6,7 Only 1% of participants discontinued due to (Roswell, GA), Shionogi Inc. (Florham Park, NJ), Symbiotec hot flashes, and there were no differences in rates of bleed- Pharmalab (Indore, India), TherapeuticsMD (Boca Raton, FL), Valeant Pharmaceuticals (Laval, Canada) ing or breast tenderness. Speaker: AMAG Pharmaceuticals, Inc., Duchesnay USA (Rosemont, PA), Novo Nordisk (Bagsvrerd, Denmark), REFERENCES Shionogi Inc., Valeant Pharmaceuticals (Laval, Canada) 1. Wilson JD, Lee RA, Balen AH, Rutherford AJ. Bacterial vaginal flora in rela- Grants/Research: AbbVie, Inc., Allergan, Plc, Agile tion to changing oestrogen levels. Int J STD AIDS. 2007;18(5):308-311. Therapeutics (Princeton, NJ), Bayer Healthcare LLC. 2. Parish SJ, Nappi RE, Krychman ML, et al. Impact of vulvovaginal health (Tarrytown, NY), Dornier MedTech (Munich, Germany), on postmenopausal women: a review of surveys on symptoms of vulvo- Endoceutics, Inc. (Quebec, Canada), GTx, Inc. (Memphis, TN), vaginal atrophy. Int J Womens Health. 2013;5:437-447. Ipsen (Paris, France), Myovant Sciences (Basel, Switzerland), 3. Crandall CJ, Hovey KM, Andrews CA, et al. Breast cancer, endometrial New England Research Institute, Inc. (Watertown, MA), cancer, and cardiovascular events in participants who used vaginal ObsEva SA (Geneva, Switzerland), Palatin Technologies estrogen in the Women’s Health Initiative Observational Study. Meno- (Cranbury, NJ), Symbio Research, Inc. (Port Jefferson, NY), pause. 2018;25(1):11-20. TherapeuticsMD, Tissue Genesis (Honolulu, HI) 4. Kingsberg SA, Krychman M, Graham S, et al. The Women’s EMPOWER Survey: Identifying Women’s Perceptions on Vulvar and Vaginal Atrophy Stock Shareholder: Pharmaceuticals (Columbus, OH) and Its Treatment. J Sex Med. 2017;14(3):413-424. 5. Berga SL. Profile of ospemifene in the breast. Reprod Sci. 2013;20(10):1130- No disclosures to declare 1136. Heidi M. Wilson, Course Director 6. Bachmann GA, Komi JO; Ospemifene Study Group. Ospemifene effec- tively treats vulvovaginal atrophy in postmenopausal women: results from a pivotal phase 3 study. Menopause. 2010;17(3):480-486. 7. Portman DJ, Bachmann GA, Simon JA; Ospemifene Study Group. Ospe- mifene, a novel selective estrogen receptor modulator for treating dys- pareunia associated with postmenopausal vulvar and vaginal atrophy. Menopause. 2013;20(6):623-630. 8. ACOG Practice Bulletin No. 141: management of menopausal symp- toms. Obstet Gynecol. 2014;123(1):202-216. S2 February 2019 I Supplement to OBG MANAGEMENT OSPEMIFENE, AN ORAL SERM FOR DYSPAREUNIA OF MENOPAUSE New important data on ospemifene Steven R. Goldstein, MD, CCD, NCMP, FACOG, FRCOG Professor of Obstetrics and Gynecology New York University School of Medicine Director of Gynecological Ultrasound Co-Director of Bone Densitometry and Body Composition Department of Obstetrics and Gynecology New York University Medical Center New York, New York ENDOMETRIAL SAFETY a SERM, based on class effects, one would expect it to be There is a boxed warning in the ospemifene label that an estrogen antagonist in breast and estrogenic in bone. says, “in the uterus, ospemifene has estrogenic agonis- Additionally, improvement in overactive bladder (OAB) tic effects.”1 Despite the fact that ospemifene is not an symptoms as well as prevention of recurrent lower urinary estrogen (it’s a SERM), it goes on to state, “there is an tract infections have been reported. increased risk of endometrial cancer in a woman with a Previous data have demonstrated that ospemifene uterus who uses unopposed estrogen.” This statement inhibits breast cancer cell growth in in vitro cultures as well actually caused The Medical Letter to initially suggest that as experimental animals6 and inhibits proliferation of human patients receiving ospemifene also should receive a pro- breast tissue epithelial cells,7 with such breast effects similar gestational agent (something they later retracted).2,3 In to tamoxifen and raloxifene. Thus, although one would not trying to understand why the labeling might possibly be choose ospemifene as a primary treatment, or risk-reducing worded in such a way, one has to review the actual data agent, for breast cancer, the direction
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