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Partial 1p monosomy in a physically and mentally retarded boy.

A Gencík¹, A Gencíkova

¹Department of Research, University Clinics, Cantonal Hospital, Basel, Switzerland.

Journal De Genetique Humaine

|August 1, 1987

Summary

A rare genetic disorder involving chromosome 1 deletion (del(1)(p33-pter)) caused severe developmental delays and distinct facial features in an 8-year-old boy. This case highlights the critical role of chromosome 1 in neurodevelopment.

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Area of Science:

Genetics
Developmental Biology
Clinical Medicine

Background:

Chromosome abnormalities are a significant cause of congenital anomalies and developmental disorders.
The short arm of chromosome 1 (1p) contains genes crucial for normal fetal development and neurological function.

Observation:

An 8-year-old male presented with severe mental and physical retardation.
Clinical features included microcephaly, hypertelorism, mongoloid palpebral fissures, and midface hypoplasia.

Findings:

Karyotype analysis revealed a deletion on the distal portion of the short arm of chromosome 1.
The specific chromosomal abnormality was identified as 46,XY, del(1)(p33----pter).

Implications:

This case underscores the importance of the 1p33-pter region in human development.
Genetic analysis is crucial for diagnosing complex developmental disorders.
Further research into genes within the deleted region may elucidate specific functions and therapeutic targets.

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