Anti-ARPC4-TTLL3 antibodies are used in the immunodetection of the protein ARPC4-TTLL3 readthrough. Synonyms for this target antigen include ARPC4-TTLL3 read-through transcript, Actin-related protein 2/3 complex subunit 4, Arp2/3 complex 20 kDa subunit, and ARPC4-TTLL3 fusion protein.