Seminomas Clinical Trial
Official title:
Epigenetic Integrity of Spermatozoa in Patients With Germinal Testicular Tumours: Potential Risks and Consequences for the Conceptus
Recent data suggest that sperm cells carry an epigenetic message during spermatogenesis and
that this message is crucial for the future development of the embryo. This epigenetic
signature is notably represented by methylation of genes subjected to imprinting (GSI) and
the methylation of transposable elements (TE). Data on the maintenance of the imprint and of
the control of TE accompanying human gametogenesis in a context of adult germinal testicular
cancers, seminomas, are extremely fragmentary for tumour tissues and inexistent for gametes.
The aim of this study is to determine whether patients with seminomas in comparison with
fertile men carry a higher risk of presenting epigenetic alterations affecting their gametes.
This study is based on the use of an existing collection of biological samples. 90 samples
will be selected and split into 3 groups:
- Group 1: 30 sperm samples from patients with seminomatous testicular tumours
- Group 2: 30 sperm samples from fertile patients
- Group 3: 30 sperm samples from infertile patients
After treatment of the samples (thawing, cell sorting and removal of cryoprotectants), they
will be analysed.
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