Brain dopamine-serotonin vesicular transport disease

Brain dopamine-serotonin vesicular transport disease (also known as DTDS or SLC18A2-related disorder) is an extremely rare genetic condition that affects how the brain packages and releases two important chemical messengers: dopamine and serotonin. These chemicals play key roles in controlling movement, mood, sleep, and many other body functions. The disease is caused by mutations in the SLC18A2 gene, which provides instructions for making a protein called VMAT2 (vesicular monoamine transporter 2). This protein is responsible for loading dopamine and serotonin into tiny storage packets (vesicles) inside nerve cells so they can be properly released and used. Symptoms typically begin in infancy and include movement problems such as involuntary muscle contractions (dystonia), difficulty controlling voluntary movements, tremor, and delays in reaching motor milestones like sitting, crawling, and walking. Children may also experience mood disturbances, sleep problems, excessive sweating, and episodes that can look like a movement crisis. Some children have intellectual disability, though cognitive abilities can vary. Treatment is currently limited and mainly supportive. Some patients may partially respond to medications that affect dopamine or serotonin pathways, but there is no cure at this time. Management involves a team of specialists working together to address movement difficulties, developmental delays, and other symptoms. Early diagnosis through genetic testing is important so that supportive therapies can be started as soon as possible.

Bring these to your next appointment

• Q1.What specific mutation was found in my child's SLC18A2 gene, and what does it mean for the expected severity of the disease?,Are there any medications that might help improve my child's movement symptoms, and what are the potential side effects?,What therapies (physical, occupational, speech) should we start, and how often should they occur?,What should I do if my child has a severe movement crisis at home — when should I go to the emergency room?,Are there any clinical trials or research studies that my child might be eligible for?,How should we handle feeding difficulties, and should we consider a feeding tube?,Can you connect us with other families affected by this condition or with a specialized neurotransmitter disorder center?

Common questions about Brain dopamine-serotonin vesicular transport disease

Related conditions

Other rare diseases commonly researched alongside Brain dopamine-serotonin vesicular transport disease.

• Dopa-responsive dystonia→