Prenatal Diagnosis of Chronic Granulomatous Disease in a Male Fetus

Mutations in any of four known nadph-oxidase components lead to cgd. x-linkedcgd (x-cgd) is caused by defects in cybb, the gene that encodes gp91-phox. autosomalrecessive (ar) cgd is caused by defects in the genes for p47 phox, p22-phox or p67-phox.the aim of this study was to screen the molecular defect in the fetus of an x-cgd carriermother and postnatal confirmation of the results.in a family whose first-born child died from x-cgd, fetal dna was obtained from anongoing pregnancy by chorionic villus sampling (cvs). direct sequencing was used to detectthe previously identified cybb gene mutation. the nadph oxidase activity in the neutrophilsfrom the carrier mother and from the newborn was analyzed by the dhr assay.our studies predicted that the fetus in question was not affected by chronic granulomatousdisease, which was demonstrated to be correct at birth. for prenatal screening in a pregnant xcgdcarrier, direct sequencing is a good method for detecting the mutation in the fetal dna.postnatal confirmation of results with the dhr assay is more practical than mutation screeningto show whether the newborn have normal nadph oxidase activity or does not.