Related Experiment Videos
Unbalanced translocation (3;5)(q26.1;p14): a clinical report.
Massimiliano Rossi1, Pasqua Di Micco, Lucia Perone
1Department of Pediatrics, Federico II University, Naples, Italy.
American Journal of Medical Genetics
|July 13, 2002
Summary
This study details a patient with multiple congenital anomalies/mental retardation syndrome due to a rare unbalanced translocation. The patient
Area of Science:
- Genetics
- Clinical Genetics
- Developmental Biology
Background:
- Multiple congenital anomalies/mental retardation (MCA/MR) syndromes present complex diagnostic challenges.
- Chromosomal abnormalities, such as translocations, are a significant cause of MCA/MR syndromes.
- Smith-Lemli-Opitz syndrome (SLOS) is an MCA/MR syndrome linked to DHCR7 deficiency.
Observation:
- A patient presented with an unbalanced translocation (3;5)(q26.1;p14), resulting in partial 5p monosomy and partial 3q trisomy.
- The patient exhibited a phenotype consistent with combined dup(3q) and del(5p) syndromes.
- Certain clinical features overlapped with those seen in Smith-Lemli-Opitz syndrome (SLOS).
Findings:
- The observed phenotype is attributed to the additive effects of partial 5p monosomy and partial 3q trisomy.
- The patient's presentation suggests a potential link between this specific chromosomal imbalance and features resembling SLOS.
- Review of prior cases indicates other chromosomal anomalies can mimic SLOS.
Implications:
- This case expands the understanding of genotype-phenotype correlations in chromosomal disorders.
- It highlights the importance of considering chromosomal analysis in patients with MCA/MR syndromes, especially those with features suggestive of inborn errors of metabolism like SLOS.
- Further research may elucidate shared pathways or mechanisms between chromosomal anomalies and metabolic disorders.