Plays a role in myoblast fusion; probable mediator of endocytic recycling for membrane trafficking events during myotube formation. Binds 3 Ca(2+) ions per C2 domain. Interacts (via second C2 domain) with EHD1 and EHD2. Colocalizes with EHD1 and EHD2 at plasma membrane in myoblasts and myotubes. Localizes into foci at the plasma membrane (By similarity). Gene prediction based on partial mRNA data. Belongs to the ferlin family.