Diagrams representing the structure of FLNC and the distribution of FLNCtv variants. FLNCtv were distributed across all gene domains. However, clusters were noted in the Actin Binding Domain (ABD domains 1 and 2) and in the Z-disk region (Ig-like 19–21) of the Rod Domain 2. Nonsense mutations, and insertion/deletion (indel) variants are indicated in the upper scheme, splice site mutations in the lower (gray) scheme. 1 to 24, Ig-like domains; H1 and H2, hinge domains.