HSPB8-related autosomal dominant distal axonal motor neuropathy-myofibrillar myopathy syndrome

HSPB8-related autosomal dominant distal axonal motor neuropathy-myofibrillar myopathy syndrome is a rare inherited condition that affects both the nerves and muscles throughout the body. It is caused by changes (mutations) in the HSPB8 gene, which provides instructions for making a small protein called heat shock protein beta-8. This protein normally helps protect cells from stress and keeps other proteins working properly. When the HSPB8 gene is not working correctly, nerve fibers that control muscle movement — especially in the hands and feet — gradually break down, and the muscle fibers themselves can also become damaged and disorganized. The condition belongs to a group of diseases called Charcot-Marie-Tooth disease and related hereditary motor neuropathies, and it also overlaps with a group called myofibrillar myopathies. People with this condition typically notice weakness and wasting of the muscles in their lower legs, feet, hands, and forearms first. Over time, this can make walking, gripping objects, and climbing stairs more difficult. Some people also experience mild sensory changes, such as numbness or tingling in the feet. There is currently no cure for this condition. Treatment focuses on managing symptoms, maintaining mobility, and improving quality of life through physical therapy, occupational therapy, and supportive devices such as ankle-foot orthoses (braces). A team of specialists is usually needed to provide the best care. While the disease is slowly progressive, many people maintain a good quality of life for many years with the right support.

Bring these to your next appointment

• Q1.What specific mutation in the HSPB8 gene has been found, and what does it mean for my prognosis?,Should my children or siblings be tested for this condition, and how do I arrange that?,What physical therapy program is best for my current level of weakness?,Are there any clinical trials or research studies I might be eligible to join?,What signs should prompt me to come back sooner or seek emergency care?,What assistive devices or home modifications should I consider now versus in the future?,Are there any medications I should avoid that could worsen nerve or muscle damage?

Common questions about HSPB8-related autosomal dominant distal axonal motor neuropathy-myofibrillar myopathy syndrome