Marinesco–Sjögren syndrome

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Marinesco–Sjögren syndrome
Synonyms	Congenital cataracts, cerebellar ataxia, myopathy
Pronounce
Specialty	Neurology, Genetics
Symptoms	Cataracts, ataxia, intellectual disability, myopathy
Complications	N/A
Onset	Childhood
Duration	Lifelong
Types	N/A
Causes	Mutations in the SIL1 gene
Risks
Diagnosis	Genetic testing, clinical evaluation
Differential diagnosis	Cerebellar ataxia, congenital cataracts
Prevention	N/A
Treatment	Supportive care, physical therapy, cataract surgery
Medication
Prognosis	Variable, depends on severity
Frequency	Rare
Deaths

Marinesco–Sjögren syndrome (MSS) is a rare autosomal recessive genetic disorder characterized by cerebellar ataxia, cataracts, intellectual disability, and myopathy. The syndrome was first described by Gheorghe Marinescu and Torsten Sjögren in the early 20th century.

Signs and Symptoms

Individuals with Marinesco–Sjögren syndrome typically present with:

• Cerebellar ataxia: Impaired coordination and balance due to cerebellar dysfunction.
• Congenital cataracts: Clouding of the lens of the eye present at birth.
• Intellectual disability: Varying degrees of cognitive impairment.
• Myopathy: Muscle weakness and wasting.
• Short stature: Below-average height for age and sex.
• Delayed motor development: Slower acquisition of motor skills such as walking.

Genetics

Marinesco–Sjögren syndrome is inherited in an autosomal recessive manner. This means that an individual must inherit two copies of the mutated gene, one from each parent, to be affected by the disorder. The gene associated with MSS is SIL1, which encodes a protein involved in the proper folding of other proteins within the endoplasmic reticulum.

Diagnosis

Diagnosis of Marinesco–Sjögren syndrome is based on clinical evaluation, family history, and genetic testing. Key diagnostic features include the presence of cerebellar ataxia, cataracts, and intellectual disability. Genetic testing can confirm mutations in the SIL1 gene.

Management

There is no cure for Marinesco–Sjögren syndrome, and treatment is primarily supportive and symptomatic. Management strategies may include:

• Physical therapy: To improve coordination and muscle strength.
• Occupational therapy: To assist with daily living activities.
• Surgical intervention: For cataract removal to improve vision.
• Special education: To address learning disabilities and cognitive impairment.

Prognosis

The prognosis for individuals with Marinesco–Sjögren syndrome varies depending on the severity of symptoms. While the condition is progressive, supportive therapies can improve quality of life and functional abilities.

See also

• Cerebellar ataxia
• Cataracts
• Intellectual disability
• Myopathy
• Autosomal recessive
• Genetic disorder