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"Effectiveness of Clomiphene and Letrozole Combination versus Letrozole Alone in Assisted Reproductive Technology"

Comparison of clomiphene and letrozole combination therapy with letrozole monotherapy in stimulating ovulation in patients undergoing intracytoplasmic sperm injection (ICSI) /In Vitro Fertilization( IVF) treatment

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
IRCT
Registry ID
IRCT20101227005485N14
Enrollment
66
Registered
2025-10-18
Start date
2025-11-01
Completion date
Unknown
Last updated
2025-12-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Female infertility. Female infertility

Interventions

Intervention 1: Group 1 (Combined Treatment): This group undergoes ovarian stimulation with a combination of Clomiphene Citrate 50 mg (two tablets daily for 5 days) and Letrozole 2.5 mg (two tablets d

Sponsors

Vice chancellor for Research, Tabriz University Of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
No minimum to 42 Years

Inclusion criteria

Inclusion criteria: Infertile women under 42 years of age Willingness to participate in the study and signing an informed consent form Patients with ovarian reserve above 1

Exclusion criteria

Exclusion criteria: Existence of severe underlying diseases that affect fertility Use of medications that affect ovarian suppression in the past month Hyperlactinemia Primary ovarian insufficiency Hypothalamic amenorrhea Thyroid diseases Severe spermogram disorder

Design outcomes

Primary

MeasureTime frame
Number of oocytes retrieved. Timepoint: The ovulation day. Method of measurement: Microscopic examination.;Quality of retrieved oocytes. Timepoint: The ovulation day. Method of measurement: Microscopic examination.;Incidence rate of ovarian hyperstimulation syndrome (OHSS. Timepoint: 3 to 7 days after the injection of human chorionic gonadotropin (hCG). Method of measurement: Transvaginal ultrasound.;Fetal quality. Timepoint: Two days after embryo transfer. Method of measurement: Diagnosis of the embryo specialist according to embryological criteria.

Secondary

MeasureTime frame
Biochemical pregnancy. Timepoint: Two weeks after embryo transfer. Method of measurement: Serum level of hCG-ß.;Clinical pregnancy. Timepoint: 4 weeks after fetal transfer. Method of measurement: Vaginal ultrasound and see a pregnancy bag.;The ongoing pregnancy rate. Timepoint: By week 14 pregnancy. Method of measurement: Ultrasound.

Countries

Iran (Islamic Republic of)

Contacts

Public ContactNazli Navali

Tabriz University of Medical Sciences

navalin@tbzmed.ac.ir+98 41 1330 2879

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026