PMID- 10627137 OWN - NLM STAT- MEDLINE DCOM- 20000105 LR - 20131121 IS - 1059-7794 (Print) IS - 1059-7794 (Linking) VI - 12 IP - 1 DP - 1998 TI - Four new cases of lethal osteogenesis imperfecta due to glycine substitutions in COL1A1 and genes. Mutations in brief no. 152. Online. PG - 71-2 AB - Perinatal lethal osteogenesis imperfecta is the result of heterozygous mutations of the COL1A1 and COL1A2 genes. Here we describe the molecular defects responsible for four case of lethal OI. Two glycine substitutions within the COL1A1 gene (G478S, G994D) and two glycine substitutions within the COLIA2 gene (G319V, G697C) were identified. The mutation sites were localized in proalpha2(I) and proalpha2(I)mRNA molecules, respectively, by chemical cleavage of mismatch in hereteroduplex nucleic acids. Subsequent reverse transcription PCR amplification, cloning and sequencing, led to mutation identification. The aminoacid substitutions were due to two G-->A transitions in COL1A1(cases 1,2), to a G-->T transversion in COL1A2 (case 3), and to two contiguous point mutations in COL1A2 (case 4). All five nucleotide changes appeared to be fresh mutations. COLIA1(accession number Z74615) and COL1A2(accession number Z74616) wild type coding sequences (cDNA) were deduced from the EMBL DNA sequence database. The mutations described here can also be found in the human type I collagen mutation database at the web site:http://www.le.ac.uk/genetics/collagen. FAU - Mottes, M AU - Mottes M AD - Institute of Biology and Genetics, Universita di Verona, Italy. mottes@borgoroma.univ.it FAU - Gomez Lira, M AU - Gomez Lira M FAU - Zolezzi, F AU - Zolezzi F FAU - Valli, M AU - Valli M FAU - Lisi, V AU - Lisi V FAU - Freising, P AU - Freising P LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Hum Mutat JT - Human mutation JID - 9215429 RN - 9007-34-5 (Collagen) RN - TE7660XO1C (Glycine) SB - IM MH - Amino Acid Substitution MH - Collagen/*genetics MH - *Genes, Lethal MH - *Glycine MH - Humans MH - Osteogenesis Imperfecta/*genetics/*mortality EDAT- 2000/01/08 09:00 MHDA- 2000/06/22 10:00 CRDT- 2000/01/08 09:00 PHST- 2000/01/08 09:00 [pubmed] PHST- 2000/06/22 10:00 [medline] PHST- 2000/01/08 09:00 [entrez] AID - 10.1002/(SICI)1098-1004(1998)12:1<71::AID-HUMU14>3.0.CO;2-A [pii] AID - 10.1002/(SICI)1098-1004(1998)12:1<71::AID-HUMU16>3.0.CO;2-4 [doi] PST - ppublish SO - Hum Mutat. 1998;12(1):71-2. doi: 10.1002/(SICI)1098-1004(1998)12:1<71::AID-HUMU16>3.0.CO;2-4.