Genetics of Reproductive Disorders (Including Kallmann Syndrome) and Cleft Lip and/or Palate

June 17, 2022 updated by: Nelly Pitteloud, Centre Hospitalier Universitaire Vaudois

The Genetics of Neuroendocrine Reproductive Disorders and of the Cleft Lip and/or Palate

The purpose of this study is to explore the genetic basis of reproductive disorders and cleft lip and/or palate.

Study Overview

Detailed Description

The World Health Organization estimates approximately 10% of couples experience some sort of infertility problem.

In humans, puberty is the process through which we develop reproductive capacity.

The timing of puberty varies greatly in the general population and is influenced by both genetic and environmental factors. In extreme cases of pubertal delay, puberty progresses only partially or not at all and results in the clinical picture of congenital hypogonadotropic hypogonadism (CHH), either accompanied by anosmia in 50% of cases (Kallmann syndrome [KS]) or by normal sense of smell (nCHH), with a male: female ratio of 4:1.

CHH is due to GnRH deficiency (incidence 1: 4,000-10,000) and result in the failure of sexual maturation and infertility. It is genetically heterogeneous, with multiple patterns of inheritance and several associated loci. In the clinical spectrum of GnRH deficiency, CHH may also be associated with a cleft lip/palate (CL/P) in 5 to 7% of cases. However, this prevalence increases up to 40% in CHH patients carrying a mutation in a CL/P gene, suggesting a genetic overlap between CHH and CL/P.

Disorders of puberty have provided insight into the biology of reproduction and genetic technologies have enabled us to deepen understanding in this field. The focus of this study is to better understand the genetic control of puberty and human reproduction as well as its link with CL/P.

Increasing understanding of the molecular basis (genes) of inherited reproductive disorders and CL/P may enable investigators to:

  • improve diagnostic testing and treatments for these problems
  • develop new diagnostic tests and therapies for patients
  • enhance counseling for patients and families with reproductive disorders
  • enhance counseling for patients and families with cleft lip/palate

Study Type

Observational

Enrollment (Anticipated)

2000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

    • Vaud
      • Lausanne, Vaud, Switzerland, 1011
        • Recruiting
        • Centre Hospitalier Universitaire Vaudois (CHUV)
        • Contact:
        • Contact:
        • Principal Investigator:
          • Nelly Pitteloud, M.D.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Study participants will be a convenience sample of those patients with reproductive disorders (and their family members), with or without cleft lip/palate, who are interested in participating in this genetic study.

Description

Inclusion Criteria:(any of the following conditions)

  • hypogonadotropic hypogonadism
  • Kallmann syndrome
  • adult-onset hypogonadotropic hypogonadism
  • hypothalamic amenorrhea
  • polycystic ovarian syndrome
  • primary gonadal failure
  • precocious puberty
  • cleft lip/palate
  • family members of the above groups

Exclusion Criteria:

  • acute illness/hospitalization
  • pituitary tumors
  • iron overload (hemochromatosis)
  • infiltrative diseases (sarcoidosis)
  • chronic alcohol abuse
  • illicit drug use
  • anabolic steroid abuse

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Control
  • Time Perspectives: Other

Cohorts and Interventions

Group / Cohort
Patients

Patients with reproductive disorders with or without cleft lip/palate will be recruited for:

  • completion of medical questionnaire and review of medical records
  • family tree (including questions on reproductive disorders and cleft lip/palate)
  • specimen collection (DNA/RNA) from: serum/plasma/saliva/urine/buccal swab/hair follicles/sperm/skin biopsy
  • smell testing
  • hearing test
  • bone density
  • brain MRI
  • kidney, testicular/ovarian ultrasound
Family members

Family members of Patients will be recruited for:

  • completion of medical questionnaire
  • specimen collection (DNA/RNA) from: serum/plasma/saliva/urine/buccal swab/hair follicles/sperm/skin biopsy
  • smell testing

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
rare sequence variant(s) in gene(s)
Time Frame: 1 year (ongoing if no variants are identified)
The investigators aim to discover genes associated with reproductive disorders by identifying rare sequence variants (mutations) in patients
1 year (ongoing if no variants are identified)

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
functionality of identified rare sequence variants (mutations)
Time Frame: 1 year (following variant identification)
The investigators will use a variety of scientific approaches to assess the functional impact of the identified rare sequence variants (mutations)
1 year (following variant identification)
mode of inheritance
Time Frame: 1 year (following variant identification)
The investigators will examine family pedigrees and study family members to determine the inheritance patterns (how the disorder is transmitted in the family)
1 year (following variant identification)
genotype-phenotype correlation
Time Frame: 1 year (following variant identification)
The investigators will study the phenotypic spectrum (how the disorder presents clinically) in patients with identified rare sequence variants (mutations)
1 year (following variant identification)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Nelly Pitteloud, M.D., Centre Hositalier Universitaire Vaudois (CHUV)

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2012

Primary Completion (Anticipated)

March 1, 2025

Study Completion (Anticipated)

March 1, 2030

Study Registration Dates

First Submitted

May 15, 2012

First Submitted That Met QC Criteria

May 16, 2012

First Posted (Estimate)

May 17, 2012

Study Record Updates

Last Update Posted (Actual)

June 21, 2022

Last Update Submitted That Met QC Criteria

June 17, 2022

Last Verified

June 1, 2022

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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