PMID- 10087994 OWN - NLM STAT- MEDLINE DCOM- 19990503 LR - 20071114 IS - 1079-9796 (Print) IS - 1079-9796 (Linking) VI - 24 IP - 3 DP - 1998 Sep TI - The spectrum of somatic mutations in the PIG-A gene in paroxysmal nocturnal hemoglobinuria includes large deletions and small duplications. PG - 370-84 AB - Paroxysmal nocturnal hemoglobinuria (PNH) is an acquired clonal blood disorder characterized by chronic hemolysis with hemoglobinuria and venous thrombosis. PNH clones arise through somatic mutations in the X-linked PIG-A gene that occur in early hematopoietic stem cells. Here we report 28 previously undescribed mutations; we confirm that somatic mutations are spread throughout the entire coding region of the PIG-A gene and that the majority are frameshift mutations producing a non-functional PIG-A protein (PIG-A(o)). In addition, we found 1 total deletion of the PIG-A gene, and 2 short nucleotide duplications. Although mutations are spread throughout the entire coding region, we observe more missense mutations in exon 2 than in the other exons. The increasing number of identified missense PIG-A mutations should help elucidate structure-function relationships in the PIG-A protein. FAU - Nafa, K AU - Nafa K AD - Department of Human Genetics, Memorial Sloan Kettering Cancer Center, NY, New York 10021, USA. k-nafa@ski.mskcc.org FAU - Bessler, M AU - Bessler M FAU - Castro-Malaspina, H AU - Castro-Malaspina H FAU - Jhanwar, S AU - Jhanwar S FAU - Luzzatto, L AU - Luzzatto L LA - eng GR - R0I-HL-56778/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Blood Cells Mol Dis JT - Blood cells, molecules & diseases JID - 9509932 RN - 0 (Membrane Proteins) RN - 0 (phosphatidylinositol glycan-class A protein) SB - IM MH - DNA Mutational Analysis MH - Female MH - Frameshift Mutation MH - *Gene Duplication MH - Hemoglobinuria, Paroxysmal/*genetics MH - Humans MH - Male MH - Membrane Proteins/*genetics MH - *Mutation MH - Nucleic Acid Hybridization MH - Polymorphism, Single-Stranded Conformational MH - Sequence Analysis, DNA MH - *Sequence Deletion MH - X Chromosome/*genetics EDAT- 1998/10/29 00:00 MHDA- 1998/10/29 00:01 CRDT- 1998/10/29 00:00 PHST- 1998/10/29 00:00 [pubmed] PHST- 1998/10/29 00:01 [medline] PHST- 1998/10/29 00:00 [entrez] AID - S1079-9796(98)90203-0 [pii] AID - 10.1006/bcmd.1998.0203 [doi] PST - ppublish SO - Blood Cells Mol Dis. 1998 Sep;24(3):370-84. doi: 10.1006/bcmd.1998.0203.