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Comparison of the Effect of Gonadotropin and Clomiphene Citrate Treatment on Sperm Parameters and the Outcome of Assisted Reproductive Procedures in Subfertile Men Based on the APHRODITE Groups

Comparison of the Effect of Gonadotropin and Clomiphene Citrate Treatment on Sperm Parameters and the Outcome of Assisted Reproductive Procedures in Subfertile Men Based on the APHRODITE Groups

Status
Enrolling by invitation
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07523022
Acronym
GONACLO
Enrollment
500
Registered
2026-04-13
Start date
2024-09-01
Completion date
2026-12-01
Last updated
2026-04-16

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

Conditions

Male Infertility

Keywords

APHRODITE classification, male infertility, gonadotropin therapy, clomiphene-citrate

Brief summary

Men enrolled in the study are assigned to each APHRODITE group. Group 2,3,4 are treated with either gonadotropin preparations or clompihene-citrate (except group 4). The type of the treatment (gonadotropin vs clomiphene) is randomized. After treatment, hormonal measurements, spermiogram and DNA fragmentation tests are repeated, allowing for analysis of the outcome.

Detailed description

Our research involves male partners of couples suffering from male infertility. After a comprehensive andrological examination, based on the test results, the men are classified into so-called "APHRODITE" categories. Based on these categories, half of the patients are given so-called gonadotropin treatment (the exact treatment depends on the type of category), which involves subcutaneous injections several times a week for a total of 12 weeks. The other half of the patients are recommended oral tablets containing the active ingredient clomiphene citrate, also for 12 weeks. It is important that both types of therapy (gonadotropin and clomiphene citrate) are effective treatments in certain cases of male infertility, according to the literature, so all patients participating in the research receive effective treatment. However, it is decided who receives which treatment by randomization. After the 12-week treatment, a control sperm analysis and a DNA fragmentation test are performed to determine the success of the treatment (changes in sperm analysis results and DNA fragmentation index). The improvement in sperm parameters will be determined in the two treatment regimens, the rate of fertilized eggs in subsequent assisted reproduction cycles, the quality of the resulting embryos, and the rate of pregnancies and subsequent losses. The results of the two therapeutic modalities will be compared, so that it can be decided which treatment method is more effective. The research process is essentially as follows: 1. information, examination 2. classification into the APHRODITE category based on the results 3. randomization (gonadotropin or clomiphene citrate) 4. injection treatment for patients in the gonadotropin group, with therapy according to the APHRODITE category for 12 weeks 5. tablet treatment for patients in the clomiphene citrate group for 12 weeks 6. control spermiogram and DNA fragmentation 7. analysis of the results of subsequent assisted reproduction procedures

Interventions

DRUGrecFSH

recFSH 3x150NE sc weekly for 12 weeks

hCG 2x5000NE sc weekly for 12 weeks

clompihene-citrate 50mg p.o. daily for 12 weeks

Sponsors

Szeged University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Caregiver)

Masking description

The sperm analysis after the treatment is performed by a biologist, who is masked about the type of the treatment

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* abnormal sperm analysis result, APHRODITE 2,3,4 categories

Exclusion criteria

* obstructive azoospermia * non-obstructive azoospermia due to genetical defects (Klinefelter-syndrome, AZFa, AZFb microdeletion syndrome etc) * problems with the administration of subcutaneous injections * disagreement

Design outcomes

Primary

MeasureTime frameDescription
sperm DNA fragmentation12 weeks of treatmentsperm DNA fragmentation Index (%), high DNA stainability (%) are measured and compared to the pretreatment values. Lower numbers mean improvement in this outcome.
ejaculate volume12 weeks of treatmentejaculate volume (ml) after treatment are assessed and compared to the pretreatment values. Higher number means improvement in this outcome.
sperm concentration12 weeksSperm concentrations (million/ml) before and after the treatment are compared. Higher number means improvement in this outcome.
sperm motility12 weeksSperm total motility (%), progressive motility (%) after the treatment are compared to the pretreatment values. Higher numbers mean improvement in this outcome.
total sperm count, total functional sperm count12 weeksTotal sperm count (million) = ejaculate volume (ml) x sperm concentration (million/ml) and total functional sperm count (million) = total sperm count x progressive motility x 100 are compared before and after the treatment. Higher numbers mean improvement in this outcome.
Sperm morphology12 weeksPercent of normal sperm morphology (%) is counted after the treatment and compared to the pretreatment result. Higher number mean improvement in this outcome.

Secondary

MeasureTime frameDescription
gonadotropin vs clomiphene - total sperm count, total functional sperm count12 weeks of treatmentin the APHRODITE 2 and 3 groups, the results of the gonadotropin and clomiphene-citrate arms are compared regarding the percent of patients with improvement in total sperm count (million) and total functional sperm count (million)
gonadotropin vs clomiphene - DNA fragmentation12 weeksin the APHRODITE 2 and 3 groups, the results of the gonadotropin and clomiphene-citrate arms are compared regarding the percent of patients with improvement in DNA fragmentation Index (%) and high DNA stainability (%)
Gonadotropin vs clomiphene - sperm total motility, progressive motility12 weeksin the APHRODITE 2 and 3 groups, the results of the gonadotropin and clomiphene-citrate arms are compared regarding the percent of patients with improvement in total sperm motility (%) and progressive sperm motility (%)
gonadotropin vs clomiphene - normal sperm morphology12 weeksin the APHRODITE 2 and 3 groups, the results of the gonadotropin and clomiphene-citrate arms are compared regarding the percent of patients with improvement in normal sperm morphology (%)

Countries

Hungary

Contacts

PRINCIPAL_INVESTIGATORNorbert Pásztor, MD, PhD

University of Szeged, Department of Obstetrics and Gynecology, Reproductive Medicine Centre

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 17, 2026