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The Tissue Selective Estrogen Complex: A Promising New Menopausal Therapy
Women’s Health, Pfizer Inc., 500 Arcola Rd., Collegeville, PA 19426, USA
* Author to whom correspondence should be addressed.
Received: 2 July 2012; in revised form: 18 August 2012 / Accepted: 24 August 2012 / Published: 4 September 2012
Abstract: Menopause is associated with health concerns including vasomotor symptoms, vulvar/vaginal atrophy (VVA), and osteoporosis. Estrogen therapy or combined estrogen-progestin therapy (EPT) are primary treatment options for menopausal symptom relief and osteoporosis prevention. Because EPT has been associated with some safety/tolerability concerns relating to undesirable effects of estrogen and progestin, alternative options are needed. The tissue selective estrogen complex (TSEC) is a novel class of agents pairing a selective estrogen receptor modulator (SERM) with 1 or more estrogens. The TSEC combines the established efficacy of estrogens on menopausal symptoms and bone with the protective effects of a SERM on the reproductive tract. The pairing of bazedoxifene (BZA) with conjugated estrogens (CE) has been evaluated in a series of phase 3 clinical trials. BZA 20 mg/CE 0.45 mg and BZA 20 mg/CE 0.625 mg have shown efficacy in reducing the frequency and severity of hot flushes, relieving VVA symptoms, and maintaining bone mass while protecting the endometrium and breast. These BZA/CE doses have been associated with a favorable safety/tolerability profile, with higher rates of cumulative amenorrhea and lower incidences of breast pain than those reported for EPT. Thus, BZA/CE may be a promising alternative to conventional EPT for treating non-hysterectomized, postmenopausal women.
Keywords: hormone therapy; tissue selective estrogen complex (TSEC); bazedoxifene; conjugated estrogens; menopause
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MDPI and ACS Style
Komm, B.S.; Mirkin, S. The Tissue Selective Estrogen Complex: A Promising New Menopausal Therapy. Pharmaceuticals 2012, 5, 899-924.
Komm BS, Mirkin S. The Tissue Selective Estrogen Complex: A Promising New Menopausal Therapy. Pharmaceuticals. 2012; 5(9):899-924.
Komm, Barry S.; Mirkin, Sebastian. 2012. "The Tissue Selective Estrogen Complex: A Promising New Menopausal Therapy." Pharmaceuticals 5, no. 9: 899-924.