Partial trisomy 4q resulting from a familial 4/3 translocation

Area of Science:

• Genetics
• Human Genetics
• Medical Genetics

Background:

• Trisomy 4q is a rare chromosomal abnormality.
• Balanced translocations can lead to unbalanced rearrangements in offspring.

Observation:

• A case of trisomy 4q due to a balanced paternal translocation is presented.
• Phenotypic similarities in affected individuals include hypoplastic nasal alae, short philtrum, pursed lips, and prominent ears.

Findings:

• The proband's birth followed paternal oligospermia, unexplained infertility, and increased fetal wastage.
• These reproductive issues are indicators for cytogenetic analysis.

Implications:

• Cytogenetic analysis can predict unbalanced translocation states in liveborn infants.
• Genetic counseling and prenatal diagnosis are vital for families with a history of translocation or reproductive challenges.