FIG4 and chronic inflammatory demyelinating polyradiculoneuropathy: Other potential CIDP mimics reported include CMT4J (FIG4 mutation) [16], CMTX (Cx32 mutation) [17], mitochondrial neurogastrointestinal encephalomyopathy (MNGIE) [18], and additional diagnoses [19], but in general those have a different presentation and can usually be clinically differentiated from CIDP.