By working together and sharing information, the KAT6A Foundation asks those with confirmed KAT6A mutations as well as individuals with mutations in any of the genes in the lysine(K) acetyl transferase (KAT) family to participate in this patient registry. We welcome patients with confirmed mutations in genes that are in the lysine(K) acetyl transferase family of genes as these have related functions can help us understand how lysine acetyl transferase function affects human development and how we might identify novel targets to treat mutations in these genes. Your participation may define the disease(s) associated with KAT6A and associated mutations, inform the development of therapies and treatments, and increase our knowledge of disease processes.