According to the Online Mendelian Inheritance in Man database (https://www.ncbi.nlm.nih.gov/omim, accessed on 3 May 2022), the phenotypes cardiomyopathy, dilated, 1X (Phenotype MIM-number (PMIM) 611615), and the muscular dystrophy-dystroglycanopathies type A4 (congenital with brain and eye anomalies), type B4 (congenital without mental retardation), and type C4 (limb-girdle) (MDDGA4 (PMIM 253800), MDDGB4 (PMIM 613152), MDDGC4 (PMIM 611588)) are associated with FKTN mutations. Here, FKTN is linked to Intellectual disability.