PMID- 10598813 OWN - NLM STAT- MEDLINE DCOM- 20000106 LR - 20190722 IS - 0340-6717 (Print) IS - 0340-6717 (Linking) VI - 105 IP - 5 DP - 1999 Nov TI - Autosomal recessive chronic granulomatous disease caused by novel mutations in NCF-2, the gene encoding the p67-phox component of phagocyte NADPH oxidase. PG - 460-7 AB - Chronic granulomatous disease (CGD) is a rare inherited immunodeficiency disease that leads to severe recurrent infections. CGD is caused by defects in the phagocyte NADPH oxidase, a multiprotein enzyme that reduces oxygen to superoxide, a precursor of microbicidal oxidants. Less than 6% of CGD patients have an autosomal recessive form of the disease caused by mutations in NCF-2. This gene encodes p67-phox, a cytosolic oxidase subunit that associates with membrane-bound flavocytochrome b558 and regulates electron transfer. We studied six patients from five families with p67-phox deficiency and identified seven different mutant alleles. Patients from three of the kindreds were homozygous for their respective mutation, although the parents of only one family were known to be related. Five of the mutations have not previously been identified: (1) a missense mutation (383C-->T) in exon 5, (2) a nonsense mutation (196C-->T) in exon 3, (3) a missense mutation (230G-->A) in exon 3, (4) a nonsense mutation (298C-->T) in exon 4, and (5) a dinucleotide deletion (835-836 AC) from exon 9. Phagocytes from each of the patients analyzed failed to generate a measurable respiratory burst and had no detectable p67-phox protein. Our results further demonstrate that there is great heterogeneity among the mutations in p67-phox-deficient CGD patients, with no evidence for mutational hot-spots or a founder effect. Our data also support the hypothesis that the stability of p67-phox is particularly sensitive to missense mutations that cause amino acid substitutions within its N-terminal domain. In contrast, mutations predicting single amino acid changes elsewhere in the protein generally represent benign polymorphisms. FAU - Noack, D AU - Noack D AD - Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA. FAU - Rae, J AU - Rae J FAU - Cross, A R AU - Cross AR FAU - Munoz, J AU - Munoz J FAU - Salmen, S AU - Salmen S FAU - Mendoza, J A AU - Mendoza JA FAU - Rossi, N AU - Rossi N FAU - Curnutte, J T AU - Curnutte JT FAU - Heyworth, P G AU - Heyworth PG LA - eng SI - GENBANK/M32011 GR - AI24838/AI/NIAID NIH HHS/United States GR - CA68276/CA/NCI NIH HHS/United States GR - RR00833/RR/NCRR NIH HHS/United States PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Germany TA - Hum Genet JT - Human genetics JID - 7613873 RN - 0 (Codon, Nonsense) RN - 0 (Phosphoproteins) RN - 0 (neutrophil cytosol factor 67K) RN - 9007-49-2 (DNA) RN - EC 1.6.3.- (NADPH Oxidases) SB - IM MH - Adolescent MH - Amino Acid Sequence MH - Base Sequence MH - Child MH - Child, Preschool MH - Codon, Nonsense MH - DNA/genetics MH - Enzyme Stability/genetics MH - Female MH - Genes, Recessive MH - Granulomatous Disease, Chronic/*enzymology/*genetics MH - Humans MH - Infant MH - Male MH - Molecular Sequence Data MH - *Mutation MH - Mutation, Missense MH - NADPH Oxidases/deficiency/*genetics MH - Phagocytes/enzymology MH - Phosphoproteins/deficiency/*genetics MH - Sequence Deletion EDAT- 1999/12/22 00:00 MHDA- 1999/12/22 00:01 CRDT- 1999/12/22 00:00 PHST- 1999/12/22 00:00 [pubmed] PHST- 1999/12/22 00:01 [medline] PHST- 1999/12/22 00:00 [entrez] AID - 10.1007/s004390051131 [doi] PST - ppublish SO - Hum Genet. 1999 Nov;105(5):460-7. doi: 10.1007/s004390051131.