Similarly, of the myriad of known neutrophil specific immunodeficiencies caused by genetic abnormalities linked to Candida infection, including Dectin-1, CD18, CARD9, MPO, and enzymes of the NADPH oxidase pathway (6), to date chitotriosidase has not been linked in an increase in fungal susceptibility (6, 27). This evidence concerns the gene CARD9 and candidiasis.