HNRNPA1-related adult-onset distal myopathy

HNRNPA1-related adult-onset distal myopathy is a rare inherited muscle disease caused by changes (mutations) in the HNRNPA1 gene. This gene provides instructions for making a protein involved in processing RNA, which is a key step in how your body uses genetic information to build proteins. When this gene is not working properly, it leads to progressive weakness in the muscles farthest from the center of the body, particularly the hands and feet. This condition is sometimes also referred to as inclusion body myopathy associated with HNRNPA1 mutations or multisystem proteinopathy. Symptoms typically begin in adulthood and tend to worsen slowly over time. People often first notice difficulty with tasks that require fine hand movements or weakness in the lower legs and feet, which can cause tripping or foot drop. Some individuals may also develop features that overlap with other conditions such as Paget disease of bone or, in rare cases, frontotemporal dementia, because the HNRNPA1 protein is involved in a broader group of diseases called multisystem proteinopathies. There is currently no cure for this condition. Treatment focuses on managing symptoms and maintaining function for as long as possible. This may include physical therapy, occupational therapy, assistive devices like braces or splints, and regular monitoring by a team of specialists. Research is ongoing to better understand the disease and develop targeted therapies.

Bring these to your next appointment

• Q1.How quickly is this disease likely to progress in my case?,Should I be screened for Paget disease of bone or other features of multisystem proteinopathy?,What types of physical therapy or exercises are best for maintaining my muscle strength?,Should my family members be tested for the HNRNPA1 gene mutation?,Are there any clinical trials or research studies I could participate in?,How often should I have follow-up appointments and what tests should be done regularly?,What assistive devices or home modifications might help me stay independent longer?

Common questions about HNRNPA1-related adult-onset distal myopathy