Trial no.:
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PACTR201611001569368 |
Date of Approval:
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07/04/2016 |
Trial Status:
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Registered in accordance with WHO and ICMJE standards |
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TRIAL DESCRIPTION |
Public title
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induction of ovulation in polycystic ovary syndrome |
Official scientific title |
Drospirenone containing combined oral contraceptive premedication before letrozole ovulation induction in clomiphene resistant PCOS, is it worth the wait? |
Brief summary describing the background
and objectives of the trial
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Polycystic ovary syndrome (PCOS) is considered as a common endocrine disorder among women. Chronic anovulation causes infertility in 55%¿75% of patients with PCOS. Clomiphene citrate (CC) is still the standard drug for inducing ovulation. 15%¿20% of patients fail to respond to CC and this is referred to as CC resistance (CCR). Adjunctive therapy options for CC-resistant women include weight loss, insulin-sensitizing agents, bromocriptine, glucocorticoids, extended doses or continued doses of CC, and laparoscopic ovarian drilling. Alternative treatments to CC have been used to induce ovulation in CCR patients, of them aromatase inhibtors (AIs) and gonadotropins are the most commonly used. Exogenous gonadotropin therapy is effective at producing ovulation but is expensive, with significant risks of high-order multiple gestations and ovarian hyperstimulation syndrome. Letrozole is a potent, reversible, and highly selective AI that prevents androgen-to-estrogen conversion. It works by suppressing estrogen production, decreasing the negative feedback of estrogens in the hypothalamus, and subsequently increasing the circulating concentration of follicle stimulating hormone (FSH), and has been used to induce ovulation Letrozole is considered ideal for ovulation induction, as it does not deplete estrogen receptors in central and peripheral target tissues, it has less negative impact on endometrium and cervical mucus, and it typically results in mono-ovulation. Previous studies showed that the use of OCP for 2 months followed by the CC produced effective ovulation and pregnancy rates in patients who had not ovulated with maximum doses of CC alone. It was suggested that this approach might offer a low-cost and low-risk alternative to gonadotropin therapy for these patients. This study is designed to evaluate the effectiveness of 2 months drospirenone-ethinyl estradiol OCP pretreatment for CCR cases followed by letrozole induction of ovulation. |
Type of trial |
RCT |
Acronym (If the trial has an acronym then please provide) |
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Disease(s) or condition(s) being studied |
Obstetrics and Gynecology,Polycystic ovary syndrome |
Sub-Disease(s) or condition(s) being studied |
Fertility-male |
Purpose of the trial |
Treatment: Other |
Anticipated trial start date |
01/05/2016 |
Actual trial start date |
07/11/2016 |
Anticipated date of last follow up |
30/12/2016 |
Actual Last follow-up date |
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Anticipated target sample size (number of participants) |
100 |
Actual target sample size (number of participants) |
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Recruitment status |
Completed |
Publication URL |
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