Fabry disease is a rare inherited condition caused by changes in the GLA gene, which can lead to reduced activity of an enzyme called alpha galactosidase A. As a result, certain fatty substances can accumulate in cells and gradually affect different organs. Symptoms may begin during childhood or adulthood and can vary considerably between individuals.
Fabry disease is a rare genetic disorder that can affect multiple parts of the body. It occurs when changes in the GLA gene reduce the activity of alpha galactosidase A, an enzyme involved in breaking down a particular type of fatty substance. When the enzyme does not work adequately, these substances can accumulate inside cells. The effects may develop gradually and can differ substantially between people. Some individuals experience symptoms early in life, while others may not be diagnosed until adulthood.
The symptoms of Fabry disease can vary according to age, sex, genetic variant, and the organs affected. Because several symptoms can resemble those of other conditions, diagnosis may sometimes take time.
Fabry disease follows an X-linked inheritance pattern. A person who carries a disease-causing GLA variant may pass it to their children. Both males and females can be affected, although the severity and pattern of symptoms can differ.
Possible symptoms and features include:
Burning, tingling, or severe pain in the hands and feet, particularly during illness, exercise, or hot weather.
Small dark red or purple skin spots known as angiokeratomas.
Reduced ability to sweat or an inability to sweat normally.
Abdominal pain, diarrhea, constipation, nausea, or other gastrointestinal problems.
Fatigue and reduced tolerance for heat or physical activity.
Hearing difficulties, ringing in the ears, or balance-related problems.
Kidney abnormalities that may progress to reduced kidney function.
Heart involvement, including thickening of the heart muscle or abnormal heart rhythm.
Neurological complications, including an increased risk of stroke or transient ischemic attacks.
Diagnosis generally combines clinical evaluation, laboratory testing, genetic analysis, and assessment of potentially affected organs. Enzyme activity testing can be particularly useful in males, while genetic testing is important for confirming disease-causing GLA variants and identifying affected family members. In females, enzyme activity may sometimes fall within a typical range, so genetic testing can be especially important when Fabry disease is suspected.
Because Fabry disease can affect several organs, regular monitoring is an important part of long-term care. Healthcare professionals may evaluate kidney function, heart structure and rhythm, neurological health, hearing, and other relevant symptoms.
Important areas of monitoring can include:
Kidneys: Blood and urine tests can help identify changes in kidney function or protein levels.
Heart: Electrocardiograms, echocardiograms, and other cardiac assessments may detect structural or rhythm-related changes.
Brain and nervous system: Neurological assessments can help identify complications such as stroke or other neurological problems.
Hearing: Hearing evaluations may be recommended when hearing loss or tinnitus occurs.
Pain and gastrointestinal symptoms: Individual symptoms can be assessed and managed according to their cause and severity.
Family screening: Genetic counseling and appropriate testing may help identify relatives who could carry a GLA variant.
Treatment depends on the individual's symptoms, disease manifestations, and clinical circumstances. Disease-specific therapies may be considered for appropriate patients, while additional treatments can address complications involving the kidneys, heart, nervous system, or other organs. Regular follow-up is important because Fabry disease can change over time.
Fabry disease is a hereditary condition that can involve multiple organs and produce symptoms ranging from pain and skin changes to kidney, heart, and neurological complications. Recognizing potential symptoms, understanding its inheritance, obtaining appropriate diagnostic testing, and maintaining regular organ monitoring can help support informed medical care. Individuals with suspected or confirmed Fabry disease should discuss their circumstances with qualified healthcare professionals and consider genetic counseling when