PMID- 10577279 OWN - NLM STAT- MEDLINE DCOM- 19991101 LR - 20190822 IS - 0361-8609 (Print) IS - 0361-8609 (Linking) VI - 62 IP - 2 DP - 1999 Oct TI - A novel mutation of the erythroid-specific gamma-Aminolevulinate synthase gene in a patient with non-inherited pyridoxine-responsive sideroblastic anemia. PG - 112-4 AB - A novel missense mutation, G663A, in exon 5 of the erythroid-specific delta-aminolevulinate synthase gene (ALAS2) was identified in a Japanese male with pyridoxine-responsive sideroblastic anemia. Activity of the mutant delta-aminolevulinate synthase protein expressed in vitro was 15.1% compared with the normal control, but was increased up to 34.5% by the addition of pyridoxal 5'-phosphate, consistent with the clinical response of the patient to pyridoxine treatment. The same mutation was also detected in genomic DNa from the oral mucosal membrane of the patiet; however, it was not detected in other family member. These findings suggest that this G663A mutation is responsible for sideroblastic anemia in the proband, and may be an index mutation in this pedigree. FAU - Harigae, H AU - Harigae H AD - Department of Clinical Medicine, Tohoku University School of Medicine, Sandai, Japan. FAU - Furuyama, K AU - Furuyama K FAU - Kudo, K AU - Kudo K FAU - Hayashi, N AU - Hayashi N FAU - Yamamoto, M AU - Yamamoto M FAU - Sassa, S AU - Sassa S FAU - Sasaki, T AU - Sasaki T LA - eng GR - DK-32890/DK/NIDDK 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 - United States TA - Am J Hematol JT - American journal of hematology JID - 7610369 RN - EC 2.3.1.37 (5-Aminolevulinate Synthetase) RN - KV2JZ1BI6Z (Pyridoxine) SB - IM MH - 5-Aminolevulinate Synthetase/blood/*genetics MH - Anemia, Sideroblastic/*blood/drug therapy/enzymology/*genetics MH - Base Sequence MH - Bone Marrow Cells/pathology MH - Erythrocytes/*enzymology MH - Exons MH - Humans MH - Infant MH - Japan MH - Male MH - *Mutation, Missense MH - Polymerase Chain Reaction MH - Pyridoxine/*therapeutic use MH - Reference Values EDAT- 1999/11/30 09:00 MHDA- 2000/06/20 09:00 CRDT- 1999/11/30 09:00 PHST- 1999/11/30 09:00 [pubmed] PHST- 2000/06/20 09:00 [medline] PHST- 1999/11/30 09:00 [entrez] AID - 10.1002/(SICI)1096-8652(199910)62:2<112::AID-AJH9>3.0.CO;2-L [pii] AID - 10.1002/(sici)1096-8652(199910)62:2<112::aid-ajh9>3.0.co;2-l [doi] PST - ppublish SO - Am J Hematol. 1999 Oct;62(2):112-4. doi: 10.1002/(sici)1096-8652(199910)62:2<112::aid-ajh9>3.0.co;2-l.