Absent muscle dystrophin expression

What it means

Lack of dystrophin in muscle tissue. Immunohistochemistry reveals absent dystrophin protein in the muscle biopsy.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category