CDC42 and hemophagocytic syndrome: Moreover, AR Actin Related Protein 2/3 Complex Subunit 1B (ARPC1B)-deficiency [30] and mutation in Cell division cycle 42 (CDC42) [31] show, respectively, WAS-like phenotype with mild thrombocytopenia and neonatal-onset cytopenia, autoinflammation, rash, as well as episodes of hemophagocytic lymphohistiocytosis (NOCARH) and neurodevelopmental delay.