Triple X syndrome in a patient with partial lipodystrophy discovered using a high-density oligonucleotide microarray:...

Area of Science:

• Genetics
• Endocrinology
• Rare Diseases

Background:

• Lipodystrophy involves adipose tissue atrophy, leading to metabolic syndrome and cardiovascular risks.
• Known genetic mutations explain only half of lipodystrophy cases, highlighting the need for new diagnostic approaches.
• Investigating novel genetic variations is crucial for understanding disease mechanisms.

Purpose of the Study:

• To report a unique case of lipodystrophy co-occurring with triple X syndrome.
• To explore potential genetic links and influences between these conditions.
• To contribute to the understanding of rare genetic variations in disease.

Main Methods:

• Case report of a 53-year-old woman with severe insulin resistance, hypertension, and dyslipidemia.
• Exclusion of known lipodystrophy mutations via DNA sequencing.
• Identification of triple X syndrome and a novel 5q33.2 duplication using microarray analysis.

Main Results:

• The patient presented with lipodystrophy and was diagnosed with triple X syndrome.
• A previously unobserved 415 kb duplication on chromosome 5q33.2 was identified.
• This represents the first reported instance of co-occurring lipodystrophy and triple X syndrome.

Conclusions:

• The direct link between triple X syndrome and partial lipodystrophy remains unconfirmed but is a rare occurrence.
• This case raises questions about triple X syndrome's influence on lipodystrophy susceptibility.
• Future large-scale studies will assess triple X syndrome prevalence in patient cohorts.