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Whole Genome Analysis for the Detection of Key Genes in the Polycystic Ovary Syndrome

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00665171
Recruitment Status : Unknown
Verified April 2008 by Maaynei Hayesha Medical Center.
Recruitment status was:  Not yet recruiting
First Posted : April 23, 2008
Last Update Posted : April 23, 2008
Information provided by:
Maaynei Hayesha Medical Center

Brief Summary:

Background: Infertility affects up to 15% of married couples. About half are attributable to female factors, among which anovulation is the leading cause. Some 5% of all women of reproductive age are anovulatory due to the polycystic ovarian syndrome (PCOS). PCOS causes also major health and cosmetic problems and significantly affects quality of life. PCOS is associated with cardiovascular morbidity and Type 2 diabetes mellitus, but it is unclear whether these are caused by the ovarian dysfunction or result from a common denominator.

Working hypothesis and aims: Whole genome analysis of multigenerational families in which at least one woman is affected by PCOS may significantly reduce the numbers needed to verify the specific genes, involved in the causation of PCOS.

Methods: Registration of multigenerational families and production of personal files with full workup for the presence of PCOS or its absence (in the women participants). Drawing of blood, extraction and preservation of DNA. Analysis of all informative SNPs in the genomes of the participants on a specific microarray chip. Statistical analysis of the results.

Expected results: Verification of the loci and putative genes, associated with the appearance of PCOS.

Importance: Elucidation of the specific genes underlying the pathology of PCOS. Probable implications to Medicine: Paving the way for targeted treatment of the problems, associated with PCOS, based on the clear knowledge of its underlying cause(s).

Condition or disease
Anovulation Hyperandrogenism Polycystic Ovary Syndrome Single Nucleotide Polymorphism

Detailed Description:
  1. Working Hypothesis The recent trend in GWA has been the comparison of large numbers of DNA samples from affected individuals and large pools of unrelated individuals (Wellcome Trust Case Control Consortium). Whenever the control group came from family members, the number of patients needed to be sampled has been consistently smaller (Dempfle a et al 2006; The Japanese Schizophrenia Sib-Pair Linkage Group 2005), due to less degrees of freedom in the statistical analysis (Chen WM & Abecasis GR 2007).
  2. Specific Aims

    1. What are the specific informative SNPs, associated with PCOD?
    2. What are the specific genes located in the vicinity of these SNPs, which could contribute to the development of the clinical syndrome? Detailed description of the proposed research Clinical data collection and patient recruitment Patients

    Women will be diagnosed as suffering from PCOD based on the Rotterdam criteria ():

    1. Oligo- and/or anovulation
    2. Clinical and/or biochemical signs of hyperandrogenism
    3. Polycystic ovaries, and exclusion of other aetiologies (congenital adrenal hyperplasias, androgen-secreting tumours, Cushing's syndrome) Routine testing of serum levels for the relevant sex hormones will be performed at the 3rd day of the menstrual cycle. Glucose and insulin levels will be measured at the fasting state. The individual data collection page is presented as Appendix 1.

    Controls Sisters, mothers, fathers, aunts and grandmothers of affected women will be asked to disclose their relevant clinical history and donate a single blood test for both DNA extraction and hormonal tests, which will be taken at the 3rd day of menstruation, where applicable.

    The population that is served by Mayanei Hayeshua hospital is characterized by a short generation interval, due to the mean early age at marriage and the desire to bear children right after marriage. This should allow the formation of genealogy trees that are very informative.

    Data security and terms of use of samples Recruitment of family members will be only through the index cases, and each participant will receive a complete explanation of possible personal implication of the study results to herself and family (none). Overall, all included women, patients and family members alike, will be notified as to the secrecy of the data and its use only for the declared purpose of research. They will also be made aware that no personal benefit or harm can be derived from this data to them. In addition, all participants will be informed that if in the future there will arise a new reason to re-analyze their samples, a specific address will be made to each and every one of them to obtain a new permission for this use. Upon request each participant will receive a full explanation of the storage system and the hierarchy of responsibility for the samples and data security.

  3. Compliance to the definition of a feasibility study The funds requested herein are meant to enable the formation of DNA bank and family trees, which in turn will serve as the basis for an application to receive the full funding for whole genome analysis, from larger funding resources. Towards this we have teamed up with the future participants of a worldwide consortium on this topic (letter of intention from Bart Fauser, the leading person of this consortium, is attached). Our most pronounced advantage within the consortium, is the availability of multigenerational families, members of which we treat in Bnei Brak.
  4. Potential Implications to Medicine and contribution of the expected outcome to society Paving the way for targeted treatment of the problems, associated with PCOS, based on the clear knowledge of its underlying cause(s).

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Study Type : Observational
Estimated Enrollment : 1500 participants
Observational Model: Family-Based
Time Perspective: Prospective
Official Title: Whole Genome Analysis for the Detection of Key Genes in the Polycystic Ovary Syndrome - a Study on Multigenerational Families
Study Start Date : June 2008

Biospecimen Retention:   Samples With DNA
The study aims to perform a whole genome analysis for the detection of genes, associated with the polycystic ovary syndrome. Therefore, the main clinical effort is the diagnosis of index cases and recruitment of family members to give DNA samples.

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Multigenerational families with at least one woman affected with the polycystic ovary syndrome.

Inclusion Criteria:

  • A clinical and laboratory diagnosis of the polycystic ovary syndrome (cases). Female family members of index cases, up to a great grandmother and fathers of index cases.

Exclusion Criteria:

  • None.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00665171

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Department of Obstetrics and Gynecology, Maaynei Hayeshua Medical Center
Bnei Brak, Israel
Contact: Izhar Ben-Shlomo, MD    972-52-6124781   
Principal Investigator: Izhar Ben-Shlomo, MD         
Sponsors and Collaborators
Maaynei Hayesha Medical Center
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Principal Investigator: Izhar Ben-Shlomo, MD Maaynei Hayeshua Medical Center
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Responsible Party: Izhar Ben-Shlomo, Maaynei Hayeshua Medical Center Identifier: NCT00665171    
Other Study ID Numbers: pcodsnp
First Posted: April 23, 2008    Key Record Dates
Last Update Posted: April 23, 2008
Last Verified: April 2008
Keywords provided by Maaynei Hayesha Medical Center:
Polycystic ovary syndrome
Single nucleotide polymorphism
Whole genome analysis
Multigenerational family study
Additional relevant MeSH terms:
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Polycystic Ovary Syndrome
Pathologic Processes
Ovarian Cysts
Ovarian Diseases
Adnexal Diseases
Gonadal Disorders
Endocrine System Diseases
46, XX Disorders of Sex Development
Disorders of Sex Development
Urogenital Abnormalities
Adrenogenital Syndrome
Congenital Abnormalities