HNRNPK and neurodevelopmental disorder-craniofacial dysmorphism-cardiac defect-hip dysplasia syndrome: Au-Kline syndrome (AUKS; OMIM 616580) is caused by heterozygous mutation in HNRNPK, the gene encoding the RBP hnRNP K, or a 264 kb deletion in chromosome 9q21.32 encompassing HNRNPK [36,37].