FLNC-related handgrip and calf weakness-distal myopathy

FLNC-related distal myopathy, also known as FLNC-related handgrip and calf weakness-distal myopathy or Filaminopathy type C, is a rare inherited muscle disease caused by changes (mutations) in the FLNC gene. This gene provides instructions for making a protein called Filamin C, which helps keep muscle fibers strong and properly organized. When this protein does not work correctly, muscle cells gradually break down over time. The disease mainly affects the muscles farthest from the center of the body — particularly the hands and lower legs (calves). People with this condition often notice that gripping objects becomes harder and that their lower legs feel weak or tire easily. Some people also develop problems with their heart muscle (cardiomyopathy) or experience irregular heartbeats, which makes regular heart monitoring very important. Symptoms usually begin in adulthood, often between the ages of 40 and 60, though this can vary. The condition tends to progress slowly over many years. There is currently no cure, but physical therapy, assistive devices, and careful heart monitoring can help people manage symptoms and maintain quality of life. Because this disease is so rare, it is often misdiagnosed or diagnosed late, making genetic testing a key step toward getting the right care.

Bring these to your next appointment

• Q1.What genetic testing do you recommend to confirm my diagnosis, and should my family members be tested too?,How often should I have my heart checked, and what specific heart tests do I need?,What physical therapy or exercise program is safe and helpful for my type of muscle weakness?,Are there any clinical trials or research studies I might be eligible to join?,What signs or symptoms should prompt me to seek emergency care right away?,How quickly do you expect my symptoms to progress, and what milestones should I watch for?,Are there any assistive devices or home modifications you recommend to keep me safe and independent?

Common questions about FLNC-related handgrip and calf weakness-distal myopathy