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Cohort Study to Assess the Impact of CYP2D6 Genotype on the Efficacy of Clomiphene

Cohort Study to Assess the Impact of CYP2D6 Genotype on the Efficacy of Clomiphene - IKP245

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00010070
Enrollment
250
Registered
2016-03-17
Start date
2013-11-12
Completion date
Unknown
Last updated
2025-04-07

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

Conditions

N97.9

Interventions

Group 1: Women, who are foreseen for therapy with clomiphene, will be asked for a blood sample for genotyping (2 x 2,7 ml EDTA blood). Furthermore, a blood withdrawal is planned during individual clom

Sponsors

Robert Bosch Gesellschaft für Medizinische Forschung mbH
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 40 Years

Inclusion criteria

Inclusion criteria: 1. Written informed consent obtained prior to study entry including informed consent for genetic Research 2. Aged 18 to 40 years 3. BMI 18.5 kg/m² - 26 kg/m² 4. Minimum of one planned or done clomiphene therapy cycle

Exclusion criteria

Exclusion criteria: 1. Concomitant treatment with other ovulation inducing medication (e.g FSH, LHRH-analogue; induction of ovulation by hCG is allowed) 2. Unwillingness to provide informed consent of the study

Design outcomes

Primary

MeasureTime frame
To investigate the therapeutic efficacy of clomiphene in relation to its metabolic profile and the CYP2D6 genotype. Primary endpoint variables: 1. Measurement of growing follicles by transvaginal ultrasound (largest follicle diameter). 2. Number of mature follicles (mean diameter = 18 mm)

Secondary

MeasureTime frame
1. Investigation of further parameters for the efficacy of clomiphene in relation to CYP2D6 genotype: - sex steroid hormone levels (LH, FSH, estradiol, progesterone, testosterone, AMH) - Number of follicles > 15 mm - height of the lining of the Uterus - highest clomiphene dose / number of therapy clycles 2. Clomiphene and metabolites blood levels

Countries

Germany

Contacts

Public ContactSvitlana Igel

Dr. Margarete Fischer-Bosch-Institut für Klinische Pharmakologie

svitlana.igel@ikp-stuttgart.de+4980)71181015702

Outcome results

None listed

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