Clinical Trial: The Clinical Study of Sex Chromosome Variants

Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Observational

Official Title: The Clinical Study of Patients With Sex Chromosome Variants

Brief Summary:

Purpose/Lay Summary: Background:

- Chromosomes are the structures inside of each cell that carry our genetic material (genes). Certain differences in the sex chromosomes are known to cause various diseases, such as infertility, Turner syndrome, or Klinefelter syndrome. However, it is not fully understood why these differences are seen and what clinical findings may be caused with different sex chromosome variants. This study is seeking to learn more about the genetic and clinical characteristics of disorders related to the X and Y chromosomes.

Objectives:

- To study related medical conditions in people with sex chromosome variants.

Eligibility:

  • Patients with known sex chromosome differences may be eligible to participate.
  • Healthy volunteers age 18 - 55

Design:

  • Participants will be screened with a physical exam and medical history. Blood and urine samples will be collected.
  • This study will last about 5 days. Participants will have a variety of endocrine and other tests. They will provide blood, urine, and semen samples for these tests.
  • Imaging studies of the heart and abdomen will be performed. These tests may include ultrasounds and magnetic resonance imaging.
  • Participants will also have their vision and hearing checked.
  • Healthy volunteers with have a single day visit for a medical history, physical exam, and blood and skin samples.

    Detailed Summary: Infertility is a disease that affects approximately 10% of couples world-wide. Causes of infertility are varied and include age-related decline in fecundity, other causes of ovulatory dysfunction, tubal and pelvic pathology, male causes, idiopathic, and multifactorial. The underlying genetic causes of infertility are incompletely understood. The purpose of this study is to increase our understanding of the genetic and clinical manifestations of infertility related to Ychromosome differences through detailed physical, radiologic, and laboratory studies. We will concentrate on a group of patients (both male and female) with known Y-chromosome variations and infertility previously identified by our collaborator, Dr. David Page s lab. Patients recruited and consenting to this study will be evaluated at the NIH Clinical Center.
    Sponsor: National Human Genome Research Institute (NHGRI)

    Current Primary Outcome:

    Original Primary Outcome:

    Current Secondary Outcome:

    Original Secondary Outcome:

    Information By: National Institutes of Health Clinical Center (CC)

    Dates:
    Date Received: August 7, 2012
    Date Started: July 30, 2012
    Date Completion:
    Last Updated: April 20, 2017
    Last Verified: March 6, 2017