Related Experiment Videos
Endocrine abnormalities in a patient with partial trisomy 4q.
Journal of Medical Genetics
|August 1, 1984
Summary
This study details a rare genetic condition, partial trisomy 4q, in a male patient. Findings reveal significant endocrine abnormalities, including hyperinsulinaemia and hypothyroidism, offering new insights into this chromosomal disorder.
Area of Science:
- Genetics
- Endocrinology
- Human Chromosome Abnormalities
Background:
- Partial trisomy of chromosome 4q, often arising from familial translocations, is a recognized genetic condition.
- This report focuses on a unique case of de novo unbalanced translocation involving the distal segment of chromosome 4q.
Observation:
- A 16-year-old male with 46,XY,12q+ karyotype presented with mental retardation.
- Genetic analysis confirmed a de novo unbalanced translocation involving the distal portion of the long arm of chromosome 4 (4q).
Findings:
- The patient exhibited severe endocrine dysfunction, including extreme hyperinsulinaemia, primary hypothyroidism, and hypergonadotropic hypogonadism.
- Notably, no autoimmune markers were detected, suggesting non-autoimmune mechanisms for the endocrine resistance.
Implications:
- This case expands the understanding of clinical phenotypes associated with partial trisomy 4q.
- The endocrine findings represent the first reported evaluation in patients with this specific chromosomal abnormality, highlighting potential end-organ resistance.
- Further research is warranted to elucidate the mechanisms underlying these endocrine disruptions in partial trisomy 4q.