A Placebo-controlled Study Examining the Morphological/Biochemical Effects of Intrarosa on the Vulvar Vestibule and Vagina in Women With Genitourinary Syndrome of Menopause/Vulvovaginal Atrophy
试验速览
- 阶段
- 3 期
- 发起方
- 入组人数
- 40
- 试验地点
- 1
- 主要终点
- Changes from baseline in morphological content of vulvar and vaginal cells
研究概览
简要总结
Tissues of the genitals of women are both androgen (testosterone) and estrogen dependent. The clitoris, vestibule, urethra, anterior vaginal wall, peri-urethral tissue, and pelvic floor all depend on androgens for normal function. In addition, the glands, which secrete lubrication during sexual arousal, also require androgens to function. Deficiencies of both estrogens and androgens occur naturally during menopause. Menopause-related deficiencies of these hormones lead to thinning in the tissues of the genital and urinary systems which have been termed Genitourinary Syndrome of Menopause (GSM). Patients with GSM will frequently complain of dryness and/or pain during sexual intercourse.
Historically, GSM treatment involved both androgens and estrogens, However, over the past few decades estrogen based therapies have become much more common. More recently, clinical trials have demonstrated that local vaginal dehydroepiandrosterone (Intrarosa®) improves symptoms in menopausal women who have moderate to severe pain with intercourse.
Intrarosa® vaginal inserts are a prescription medicine approved by the U.S. Food and Drug Administration (FDA) used in women after menopause to treat moderate to severe pain during sexual intercourse caused by changes in and around the vagina that happen with menopause.
详细描述
Tissues in the genitourinary system are both androgen- and estrogen-dependent. The clitoris, vestibule, urethra, anterior vaginal wall, peri-urethral tissue, and pelvic floor are androgen-responsive. In addition, the minor vestibular glands and the major vestibular glands (Bartholin's and Skene's) are androgen-dependent, mucin-secreting glands. Deficiencies of both estrogens and androgens can occur both naturally during menopause or iatrogenically because of certain medications (e.g. Depo Lupron, spironolactone) or surgically (oophorectomy). Menopause-related deficiencies of these sex hormones lead to atrophic changes in the genitourinary system which have been termed genitourinary syndrome of menopause (GSM).
While erythema is a nonspecific finding in atrophic tissue, focal painful erythema in the androgen-dependent vestibule, particularly near the ostia of the Bartholin's glands (4:00 and 8:00 o'clock) and Skene's glands (1:00 and 11:00 o'clock) or lesser vestibular glands, is highly suggestive of GSM. Patients with GSM will frequently complain of penetrative dyspareunia and experience allodynia with the cotton swab palpation of the vulvar vestibule. During examination of the vulvar vestibule, the examiner might note general pallor with superimposed erythema. Physical exam can be improved by magnification (i.e. vulvoscopy).
Historically, GSM treatment involved both androgens and estrogens. However, in the absence of information about intracrinology, over the past few decades, estradiol-based therapies have been used exclusively. More recently, double-blind, placebo controlled clinical trials demonstrated that local vaginal dehydroepiandrosterone (Intrarosa®) improves symptoms in postmenopausal women including moderate to severe dyspareunia. These trials have demonstrated improvement in both subjective measures (such as improvement in dyspareunia) as well as objective measurement of vaginal health (improved vaginal maturation index, decreased vaginal pH) but they have not attempted to demonstrate improvement in the health of the vulvar tissue.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 40 Years 至 80 Years（Adult, Older Adult）
- 性别
- Female
- 接受健康志愿者
- 否
入选标准
- •Postmenopausal women aged 40 to 80 years.
- •Women who have self-identified at screening pain at sexual activity as moderate to severe and most bothersome symptom of vulvovaginal atrophy (Refer to Vaginal Atrophy Symptoms Questionnaire (VASQ-MBS)).
- •Women having ≤5% of superficial cells on vaginal smear at screening.
- •Women having a vaginal pH above 5 at screening.
- •Willing to participate in the study and sign an informed consent.
排除标准
- •Clinically significant metabolic or endocrine disease (including diabetes mellitus) not controlled by medication.
- •Use of estrogen injectable drug therapy and/or progestin implant within 6 months prior to screening visit.
- •Oral estrogen, progestin or DHEA exposure or intrauterine progestin therapy within 8 weeks prior to screening visit.
- •Vaginal hormonal products (rings, creams, gels or tablets) or transdermal estrogen alone or estrogen/progestin products within 8 weeks prior to screening visit.
- •Previous treatment with androgens or anabolic steroids within 3 months prior to screening visit (see Appendix 15.1 - Concomitant medications).
- •Confirmed clinically significant depression (not controlled by standard therapy) or confirmed history of severe psychiatric disturbance.
- •The administration of any investigational drug within 30 days of screening visit.
- •Clinically significant abnormal serum biochemistry, urinalysis or hematology (as per Investigator's assessment who should take into account the patient's pre-baseline conditions).
- •Uterine palpable fibroids.
- •Uterine prolapse (when the cervix reaches labia minora at gynecologic exam).
- •Subjects who suffer from vulvar lichen sclerosus or any vulvar dermatological disorder that affects the vulvar vestibule or vagina.
- •Chronic use of narcotics or alcoholism during the last 5 years.
研究组 & 干预措施
Intrarosa
Daily intravaginal administration at bedtime of one insert containing 6.5mg (0.50%) prasterone for 26 weeks
干预措施: Intrarosa (Drug)
Placebo
Daily intravaginal administration at bedtime of one insert containing placebo for 26 weeks
干预措施: Placebos (Drug)
结局指标
主要结局
Changes from baseline in morphological content of vulvar and vaginal cells
时间窗: 2 years
Changes from baseline in blood steroid concentration. Unit of measure to be determined.
Changes from baseline in enzymatic content of vulvar and vaginal cells
时间窗: 2 years
Changes from baseline in enzymatic content (HSD17B5, HSD3B1, 5alphaRED2, aromatase, HDS17B1, sulfotransferase 2A1, sulfatase and UGT2B). All enzymes have the same unit of measure. Unit of measure to be determined.
Changes from baseline in protein content of vulvar and vaginal cells
时间窗: 2 years
Changes from baseline in mucin. Unit of measure to be determined.
Changes from baseline in antigen content of vulvar and vaginal cells
时间窗: 2 years
Changes from baseline in Ki-67 antigen. Unit of measure to be determined.
次要结局
- Mean change from baseline in subject's scores on pain severity subscale VPAQ(2 years)
研究者
Andrew T. Goldstein, MD
Study Principle Investigator
Center for Vulvovaginal Disorders