Ovulation Induction in Clomiphene Citrate Resistant PCO Women

Cairo University (CU)

Status and phase: Completed; Early Phase 1

Conditions: Infertility; Polycystic Ovary Syndrome

Treatments: Drug: letrozole-metformin-pioglitazone; Drug: letrozole-metformin; Other: laboratory investigations; Radiation: transvaginal ultrasound

Study type: Interventional

Funder types: Other

Identifiers

NCT02341703

University Hospital

Details and patient eligibility

About

Polycystic ovary syndrome (PCOS) affects 5-10% of women in childbearing age. Hyperinsulinemia contributes to chronic anovulation commonly encountered in women with PCOS. The first choice therapy is clomiphene citrate (CC). In CC resistant cases, the American College of Obstetrics and Gynecology (ACOG) recommends the use of insulin sensitizer metformin. Other insulin sensitizing agents include rosiglitazone and pioglitazone. Pioglitazone is said to improve fertility and ovulation in patients with PCOS.CC may be associated with poor endometrial thickening due to its antiestrogenic effect. Letrozole may improve this condition. In this study we will compare the effect of combined letrozole-metformin with that of combined letrozole-pioglitazone in ovulation induction in CC-resistant PCOS women

Full description

Polycystic ovary syndrome (PCOS) affects 5-10% of women in childbearing age. Hyperinsulinemia contributes to chronic anovulation commonly encountered in women with PCOS. The first choice therapy is clomiphene citrate (CC). In CC resistant cases, the ACOG recommends the use of insulin sensitizer metformin. Other insulin sensitizing agents include rosiglitazone and pioglitazone. Pioglitazone is said to improve fertility and ovulation in patients with PCOS. CC has a long half-life (2 weeks), and this may have a negative effect on the cervical mucus and endometrium, leading to discrepancy between ovulation and conception rates. There has been a search for a compound capable of inducing ovulation but devoid of the adverse antiestrogenic effects of CC. recent studies have suggested that letrozole, an aromatase inhibitor, does not possess the adverse antiestrogenic effects of CC and is associated with higher pregnancy rates than CC treatment in patients with PCOS.

In this study the investigators shall compare the effect of combined letrozole-metformin with that of combined letrozole-metformin-pioglitazone in ovulation induction in CC-resistant PCOS women.This will be a prospective comparative clinical trial in which 2 groups of women will be generated (groups A and B) using the sealed envelopes randomization method.Group A (50 women) will receive: letrozole 2.5 mg/day from 3rd day of the cycle for 5 days and (pioglitazone 15 mg + metformin 850 mg) once daily from 1st day of the cycle for 10 days. Group B (50 women) will receive letrozole 2.5 mg/day from 3rd day of the cycle for 5 days and metformin 500 mg three times daily from continuously untill pregncy occurrs. Ovulation will be monitored by vaginal ultrasound and serum estrogen and progesterone.

Enrollment: 100 patients

Sex: Female

Ages: 20 to 40 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• 20-40 years old
• PCOS infertile women resistant to CC for 3 cycles

Exclusion criteria

• Presence of medical disorders as diabetes, hypertension, cardiac problems, liver or kidney diseases, hyperprolactinemia or thyroid dysfunction
• Use of gonadotropins before
• Previous ovarian drilling
• Presence of urinary symptoms especially bloody urine

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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100 participants in 2 patient groups

letrozole-metformin group

Active Comparator group

Description:

this group will receive letrozole 2.5 mg daily from day 3 of the cycle and for 5 days + metformin 500 mg three times daily from the first day of the cycle and continuous for three months unless pregnancy occurred. treatment will continue for 3 cycles unless pregnancy occurred. for this group: transvaginal ultrasound will monitor follicular enlargement laboratory investigations in the form of day 3 FSH, LH, TSH and serum testosterone will be done day 12 E2 day 21 serum progesterone

Treatment:

Drug: letrozole-metformin

Other: laboratory investigations

Radiation: transvaginal ultrasound

letrozole-metformin-pioglitazone group

Active Comparator group

Description:

this group will receive letrozole 2.5 mg daily from day 3 of the cycle and for 5 days + (metformin 850 mg + pioglitazone 15 mg) once daily from the first day of the cycle and for 10 days. treatment will continue for 3 cycles unless pregnancy occurred. for this group: transvaginal ultrasound will monitor follicular enlargement laboratory investigations in the form of day 3 FSH, LH, TSH and serum testosterone will be done day 12 E2 day 21 serum progesterone

Treatment:

Other: laboratory investigations

Radiation: transvaginal ultrasound

Drug: letrozole-metformin-pioglitazone