Urofacial syndrome

A rare genetic disorder affecting urinary and facial muscles

Urofacial syndrome (also known as Ochoa syndrome) is a rare genetic disorder characterized by abnormalities in the urinary tract and facial expressions. It is inherited in an autosomal recessive pattern.

Signs and symptoms

Individuals with urofacial syndrome typically present with a combination of urinary and facial symptoms. The urinary symptoms include urinary incontinence, urinary tract infections, and vesicoureteral reflux, which can lead to kidney damage. The facial symptoms are characterized by an unusual expression when smiling, often described as an inverted or "grimacing" smile.

Genetics

Urofacial syndrome is caused by mutations in the HPSE2 or LRIG2 genes. These genes are involved in the development and function of the urinary tract and facial muscles. The disorder follows an autosomal recessive inheritance pattern, meaning that an affected individual must inherit two copies of the mutated gene, one from each parent.

Diagram showing autosomal recessive inheritance.

Diagnosis

Diagnosis of urofacial syndrome is based on clinical evaluation, family history, and genetic testing. The presence of characteristic facial expressions and urinary symptoms can lead to suspicion of the disorder, which can be confirmed by identifying mutations in the HPSE2 or LRIG2 genes.

Management

Management of urofacial syndrome involves addressing the urinary tract issues to prevent kidney damage. This may include the use of antibiotics to treat infections, surgical interventions to correct anatomical abnormalities, and regular monitoring of kidney function. There is currently no cure for the facial symptoms, but supportive therapies such as physical therapy may help improve muscle function.

Epidemiology

Urofacial syndrome is extremely rare, with only a few hundred cases reported worldwide. It affects both males and females equally and has been identified in various ethnic groups.

Related pages

• Genetic disorder
• Urinary tract infection
• Vesicoureteral reflux