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Microdissection of chromosome 2--between-arm intrachromosomal insertion
U Friedrich1, M Houman, J Sandgaard
1Microdissection Department, Institute of Human Genetics, University of Aarhus, Denmark. zitta@humgen.au.dk
European Journal of Human Genetics : EJHG
|June 15, 2000
Summary
A mother
Area of Science:
- Genetics
- Reproductive Medicine
- Chromosomal Abnormalities
Background:
- Recurrent spontaneous abortions and fetal abnormalities can be linked to chromosomal rearrangements.
- Balanced intrachromosomal insertions are rare but can lead to reproductive challenges.
Observation:
- A mother presented with a history of four spontaneous and two induced abortions.
- Her affected fetuses showed specific chromosomal abnormalities, including monosomy and trisomy of band 2q22, and malformations like uretero-pelvic obstruction and anencephaly.
Findings:
- The mother carried a balanced intrachromosomal insertion of band 2q22 into band 2p24.
- A family-specific painting probe (der2p probe) was generated from the abnormal chromosome 2 short arm via microdissection.
Implications:
- This novel probe enables precise prenatal diagnosis for future pregnancies in this family.
- It aids in understanding the role of specific chromosomal insertions in recurrent pregnancy loss and congenital anomalies.