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Ring chromosome 12 and severe oligospermia: a case report
J Ryan Martin1, Anne Wold, Hugh S Taylor
1Division of Reproductive Endocrinology, Yale University School of Medicine, New Haven, Connecticut 06520-8063, USA.
Fertility and Sterility
|September 21, 2007
Summary
Ring chromosome 12 can cause severe male infertility and azoospermia. Karyotype analysis is crucial for diagnosing unexplained infertility cases.
Area of Science:
- Genetics
- Reproductive Medicine
- Clinical Case Reports
Background:
- Ring chromosome 12 is a rare chromosomal abnormality.
- Male infertility affects a significant portion of the population.
- Azoospermia, the absence of sperm, is a severe form of male infertility.
Observation:
- A 27-year-old man presented with primary infertility and unexplained azoospermia.
- Karyotype analysis revealed a ring chromosome 12 abnormality.
- This case highlights an unusual manifestation of ring chromosome 12.
Findings:
- The patient had severe oligospermia leading to infertility.
- In vitro fertilization (IVF) with preimplantation genetic diagnosis (PGD) was performed.
- A full-term pregnancy was achieved using donor sperm.
Implications:
- Severe oligospermia and male infertility should be considered in the clinical spectrum of ring chromosome 12.
- Karyotype testing is essential for individuals with unexplained severe oligospermia.
- Understanding rare chromosomal abnormalities aids in diagnosing and managing infertility.
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