These include chronic granulomatous disease (CGD), neutrophil adhesion defects (such as the leukocyte adhesion deficiency syndromes), Chediak-Higashi syndrome, Griscelli syndrome, Kostmann's syndrome, WHIM syndrome (disorder characterized by myelokathexis), mannose binding lectin deficiency (MBL deficiency), and enzymatic defects within phagocytes such as deficiencies of glucose-6-phosphate dehydrogenase (G6PD), glutathione reductase, glutathione synthetase, and myeloperoxidase. This evidence concerns the gene G6PD and chronic granulomatous disease.