CDC42 and macrothrombocytopenia-lymphedema-developmental delay-facial dysmorphism-camptodactyly syndrome: In the patient studied, a syndromic phenotype with facial dysmorphism, neurodevelopmental delay, immunodeficiency, autoinflammation, and hemophagocytic lymphohistiocytosis shares common features with Takenouchi-Kosaki syndrome and with C-terminal variants in <i>CDC42</i>.