Age matters: study hopes to boost fertility in klinefelter syndrome
NCT ID NCT01918280
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at 141 men with Klinefelter syndrome (47,XXY) to see if younger men (ages 15–22) have a better chance of finding sperm through testicular biopsy compared to older men (ages 23–55). Participants provided two semen samples, and if no sperm were found, they underwent a biopsy. The goal is to improve fertility preservation by identifying the best age for sperm retrieval.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Groupe de Médecine de la Reproduction - CECOS Midi-Pyrénées - Hôpital Paule de Viguier)
Toulouse, 31059, France
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Service d'Endocrinologie Moléculaire et Maladies Rares, Centre de Biologie Est, Hospices Civils de Lyon
Bron, 69677, France
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Service de Biologie de la Reproduction - CECOS - Groupe Hospitalier Pellegrin
Bordeaux, 33076, France
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Service de Biologie de la Reproduction - Hôpital de la Conception
Marseille, 13385, France