Skip to content

Comparing the Effect of Letrozole and Tamoxifen on Sperm Quality and Hormonal Status in Infertile Men

Comparison of the Effects of Letrozole and Tamoxifen on Semen Parameters and Hormonal Profile in Men with Idiopathic Infertility

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
IRCT
Registry ID
IRCT20260215068878N1
Enrollment
25
Registered
2026-02-18
Start date
2026-03-10
Completion date
Unknown
Last updated
2026-06-01

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

Conditions

Male Idiopathic Infertility. Poisoning by, adverse effect of and underdosing of iminostilbenes

Interventions

Intervention group: The intervention includes daily oral administration of letrozole 2.5 mg for the first group and tamoxifen 20 mg for the second group for three months. Medications are taken by pati

Sponsors

Zahedan University of Medical Sciences
Lead Sponsor

Eligibility

Sex/Gender
Male
Age
20 Years to 50 Years

Inclusion criteria

Inclusion criteria: Idiopathic infertility (=1 year) Age 20-50 years =2 semen abnormalities (WHO criteria) Normal or mildly elevated FSH Healthy, non-pregnant wife No fertility-affecting medications (past 3 months) Signed informed consent

Exclusion criteria

Exclusion criteria: Infertility with known cause (e.g., varicocele, obstruction, infection) Azoospermia (no sperm) History of vasectomy or groin surgery Hypogonadotropic hypogonadism (low FSH/LH) Chromosomal abnormalities (e.g., Klinefelter syndrome) Systemic diseases (diabetes, hypothyroidism, malignancy) Smoking, alcohol, or drug abuse Hypersensitivity to Letrozole or Tamoxifen

Design outcomes

Primary

MeasureTime frame
Sperm parameters. Timepoint: Before and after treatment (baseline and 3 months). Method of measurement: Semen analysis (WHO 2021) and ELISA.;Hormonal profile. Timepoint: Baseline and 3 months post-treatment. Method of measurement: Measurement of FSH, LH, testosterone, and estradiol levels in blood samples using ELISA method.;Testosterone/estradiol ratio. Timepoint: Baseline and end of month 3. Method of measurement: Calculation of testosterone (ng/dL) to estradiol (pg/mL) ratio from blood test results.

Countries

Iran (Islamic Republic of)

Contacts

Public ContactMohammad Khorasani genareh

Zahedan University of Medical Sciences

Mohamadkhorasani347@gmail.com+98 54 3329 5570

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Jun 11, 2026