Plays a role in myoblast fusion; probable mediator of endocytic recycling for membrane trafficking events during myotube formation. Interacts (via second C2 domain) with EHD1 and EHD2. Colocalizes with EHD1 and EHD2 at the plasma membrane in myoblasts and myotubes. Localizes into foci at the plasma membrane. Expressed in differentiating myoblasts and myotubes. Up-regulated during myotube formation. Belongs to the ferlin family.