Although studies vary in the level of phenotypic detail provided, several authors reporting on yields of CMA, ES, and FMR1 CGG repeat analysis in patients with neurodevelopmental disorders suggest that specific characteristics and additional diagnoses are associated with increased diagnostic yields (95, 111, 113, 140, 146, 198, 201, 210, 211). Here, FMR1 is linked to neurodevelopmental disorder.