Short answer · Medically reviewed summary · Last updated: 2023-07-13
Dejerine-Sottas disease is a rare genetic disorder that affects the peripheral nerves, which are responsible for transmitting signals between the brain, spinal cord, and the rest of the body. It is classified as a type of Charcot-Marie-Tooth disease (CMT), which is a group of inherited neuropathies. The inheritance pattern of Dejerine-Sottas disease is autosomal recessive, meaning that both parents must carry a copy of the mutated gene for their child to be affected.
Is Dejerine Sottas Disease hereditary?
Is Dejerine Sottas Disease hereditary? The genetic component explained in plain language, reviewed against medical sources, with patient experiences.
Dejerine-Sottas disease is a rare genetic disorder that affects the peripheral nerves, which are responsible for transmitting signals between the brain, spinal cord, and the rest of the body. It is classified as a type of Charcot-Marie-Tooth disease (CMT), which is a group of inherited neuropathies.
The inheritance pattern of Dejerine-Sottas disease is autosomal recessive, meaning that both parents must carry a copy of the mutated gene for their child to be affected. When both parents are carriers, there is a 25% chance with each pregnancy that the child will inherit the disease.
The specific gene mutations associated with Dejerine-Sottas disease are typically found in genes that encode for proteins involved in the structure and function of peripheral nerves. These mutations lead to abnormalities in the myelin sheath, the protective covering of nerve fibers, resulting in impaired nerve signal transmission.
Due to its genetic nature, Dejerine-Sottas disease can run in families. However, it is important to note that not all individuals who inherit the mutated gene will develop symptoms or have the same severity of the disease. The age of onset, progression, and symptoms can vary widely among affected individuals, even within the same family.
Genetic testing and counseling are recommended for individuals with a family history of Dejerine-Sottas disease or other types of CMT. This can help determine the risk of passing on the condition to future generations and provide information for family planning decisions.
