X-linked Charcot-Marie-Tooth disease type 6

X-linked Charcot-Marie-Tooth disease type 6 (CMTX6) is a very rare inherited nerve disorder that belongs to the broader group of Charcot-Marie-Tooth diseases, which are among the most common inherited conditions affecting the peripheral nerves — the nerves that connect the brain and spinal cord to the rest of the body. CMTX6 is caused by changes (mutations) in the PDK3 gene located on the X chromosome. Because it follows an X-linked inheritance pattern, it primarily affects males more severely, though females who carry the mutation may have milder symptoms or sometimes no symptoms at all. The disease mainly causes progressive damage to the peripheral nerves, leading to muscle weakness and wasting, particularly in the feet, lower legs, hands, and forearms. People with CMTX6 may notice difficulty walking, frequent tripping, foot deformities such as high arches or hammertoes, and reduced sensation in the hands and feet. Some individuals may also experience hearing loss and central nervous system involvement, which can include episodes resembling stroke-like events, particularly during times of physical stress or illness. There is currently no cure for CMTX6. Treatment focuses on managing symptoms and maintaining function. This typically includes physical therapy, occupational therapy, orthopedic devices like braces or special shoes, and sometimes surgery to correct foot deformities. Pain management may also be needed. Research into the underlying mechanisms of this disease is ongoing, and patients are encouraged to work closely with a team of specialists for the best possible care.

Bring these to your next appointment

• Q1.How severe is the nerve damage right now, and how quickly might it progress?,What physical therapy and rehabilitation programs do you recommend?,Are there any medications or substances I should avoid because they could worsen nerve damage?,What should I do if stroke-like symptoms occur — when should I go to the emergency room?,Should other family members be tested for the PDK3 gene mutation?,Are there any clinical trials or research studies I could participate in?,How often should I have follow-up nerve conduction studies and hearing tests?

Common questions about X-linked Charcot-Marie-Tooth disease type 6