Copy number variation associated with meiotic arrest in idiopathic male infertility

In an assessment of the presence of copy number variations (CNV) in men presenting with meiosis arrest and azoospermia, we detected two unique CNVs and several in known meiosis genes.

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Authors

Stefanie Eggers, Ph.D., Kathleen D. DeBoer, Ph.D., Jocelyn van den Bergen, B.Sc., Lavinia Gordon, M.Sc., Stefan J. White, Ph.D., Duangporn Jamsai, Ph.D., Robert I. McLachlan, Ph.D., Andrew H. Sinclair, Ph.D., Moira K. O’Bryan, Ph.D.

Volume 103, Issue 1, Pages 214-219

Abstract

Objective:

To assess the association between copy number variations (CNVs) and meiotic arrest and azoospermic men.

Design:

Genetic association study.

Setting:

University.

Patient(s):

Australian men: 19 with histologically confirmed meiotic arrest, 110 men with azoospermia in the absence of histologic data, and 97 fertile men (controls).

Intervention(s):

None.

Main Outcome Measure(s):

The identification of CNV by microarray and/or multiplex ligation-dependent probe amplification (MLPA), and the localization of unique CNV encoded proteins to the human testis.

Result(s):

Microarray identified two CNVs unique to meiosis arrest patients. One containing the MYRIP gene and a second containing LRRC4C and the long noncoding RNA LOC100507205. All three genes are transcribed in the human testis, and MYRIP and LRRC4C localize to meiotic cells. The reverse genetic screen for CNVs in meiosis genes identified in mouse models further identified CNVs including HSPA2 as being associated with azoospermia.

Conclusion(s):

These data raise the possibility that, while relatively rare, CNVs may contribute to human male infertility and that CNV screening should be incorporated into long-term plans for genome profiling as a diagnostic tool.

Read the full text at: http://www.fertstert.org/article/S0015-0282(14)02207-9/fulltext


Fertility and Sterility

Editorial Office, American Society for Reproductive Medicine

Fertility and Sterility® is an international journal for obstetricians, gynecologists, reproductive endocrinologists, urologists, basic scientists and others who treat and investigate problems of infertility and human reproductive disorders. The journal publishes juried original scientific articles in clinical and laboratory research relevant to reproductive endocrinology, urology, andrology, physiology, immunology, genetics, contraception, and menopause. Fertility and Sterility® encourages and supports meaningful basic and clinical research, and facilitates and promotes excellence in professional education, in the field of reproductive medicine.

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