The diagnoses clustered within the phagocyte diseases consisted of autosomal recessive chronic granulomatous disease (AR-CGD) (n=2/5; 40%), G6PD deficiency (n=2/5;40%) and MKL1 deficiency (n=1/5; 20%), based on pathogenic variants in NCF1, G6PD and MKL1, respectively. This evidence concerns the gene NCF1 and chronic granulomatous disease.