Partial Trisomy of Chromosome 9 Inherited by Adjacent Segregation 2 of a Balanced Reciprocal Translocation in the Mother: Rare Mechanism in Chromosomal Abnormalities
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Key Points
The patient displayed psychomotor retardation and facial dysmorphism, indicating significant clinical implications.
A karyotype analysis revealed an additional chromosome 9, connecting to adjacent-2 segregation in the mother.
Balanced reciprocal translocations can lead to unbalanced gametes, emphasizing the complexity of chromosomal inheritance.
Investigating such rare segregation mechanisms is vital for accurate genetic counseling and diagnosis.
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Implication
Case report reveals adjacent-2 segregation creates chromosomal abnormalities in offspring, indicating complex inheritance patterns.