Alström syndrome is inherited in an autosomal recessive manner. This means both of your parents must pass on a copy of the defective gene (ALMS1) in order for you to have this disease.

It is unknown how the defective gene causes the disorder.

The condition is very rare.

Common symptoms of this condition are:

• Blindness or severe vision impairment in infancy
• Dark patches of skin (acanthosis nigricans)
• Deafness
• Impaired heart function (cardiomyopathy), which may lead to heart failure
• Obesity
• Progressive kidney failure
• Slowed growth
• Symptoms of childhood-onset or type 2 diabetes

Occasionally, the following can also occur:

• Gastrointestinal reflux
• Hypothyroidism
• Liver dysfunction
• Small penis

An eye doctor (ophthalmologist) will examine the eyes. The person may have reduced vision.

Tests may be done to check:

• Blood sugar levels (to diagnose high blood sugar or hyperglycemia)
• Hearing
• Heart function
• Thyroid function
• Triglyceride levels

There is no specific treatment for this syndrome. Treatment for symptoms may include:

• Diabetes medicine
• Hearing aids
• Heart medicine
• Thyroid hormone replacement

Alström Syndrome International -- www.alstrom.org

The following are likely to develop:

• Deafness
• Permanent blindness
• Type 2 diabetes

Kidney and liver failure may get worse.

Possible complications are:

• Complications from diabetes
• Coronary artery disease (from diabetes and high cholesterol)
• Fatigue and shortness of breath (if poor heart function is not treated)

Contact your health care provider if you or your child has symptoms of diabetes. Common symptoms of diabetes are increased thirst and urination. Seek medical attention right away if you think that your child cannot see or hear normally.

Alström syndrome

Farooqi IS, O'Rahilly S. Genetic syndromes associated with obesity. In: Jameson JL, De Groot LJ, de Kretser DM, et al, eds. Endocrinology: Adult and Pediatric. 7th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 28.

Freund KB, Sarraf D, Mieler WF, Yannuzzzi LA. Hereditary chorioretinal dystrophies. In: Freund KB, Sarraf D, Mieler WF, Yannuzzi LA, eds. The Retinal Atlas. 2nd ed. Philadelphia, PA: Elsevier; 2017:chap 2.

Torres VE, Harris PC. Cystic diseases of the kidney. In: Yu ASL, Chertow GM, Luyckx VA, Marsden PA, Skorecki K, Taal MW, eds. Brenner and Rector's The Kidney. 11th ed. Philadelphia, PA: Elsevier; 2020:chap 45.

Updated by: Charles I. Schwartz MD, FAAP, Clinical Assistant Professor of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, General Pediatrician at PennCare for Kids, Phoenixville, PA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.