AMPH and cancer: Other autoantigens, such as glycine receptors (linked to PE RM) (15, 16), amphiphysin (linked to cancers) (17), GABAA receptors (18) and its related protein GABAA receptor-associated protein (GABARAP) (19), dipeptidyl-peptidase-like protein-6 (DPPX), and Zic4 (linked to small-cell lung cancer) (20) are also associated with SPSSD.