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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2002-1-28
pubmed:abstractText
The tissue-nonspecific alkaline phosphatase (TNSALP) gene in four unrelated patients with hypophosphatasia was analyzed using polymerase chain reaction-single strand conformation polymorphism and the direct sequencing method. Of the participating patients, one had childhood-type and three had perinatal-type disease. All carried a deletion of T at cDNA number 1559, which causes a frameshift downstream from codon L503, as a heterozygote. In the childhood-type patient, an F310L mutation was detected in the opposite allele. Similarly, a perinatal-type patient carried a V3651 mutation in the opposite allele. Mutations in the opposite alleles were not detected in the other two patients with perinatal-type disease. In addition, although both parents carried the deletion as a heterozygote in two families with childhood-type and perinatal-type disease, patients from those families were not homozygous for the deletion. Several single-nucleotide polymorphisms (SNPs) were also detected, which were shown to be useful for haplotype analysis. Allele frequency of the deletion among Japanese patients was 36% (10 of 28 alleles) but none occurred in Caucasian patients. These findings indicate that regardless of clinical type, deletion in the TNSALP gene occurs frequently among Japanese patients. Furthermore, haplotype analysis using SNPs suggested that the deletion might have derived from more than a single founder.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0914-8779
pubmed:author
pubmed:issnType
Print
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
28-33
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Importance of deletion of T at nucleotide 1559 in the tissue-nonspecific alkaline phosphatase gene in Japanese patients with hypophosphatasia.
pubmed:affiliation
Department of Biochemistry and Molecular Biology, Nippon Medical School, Tokyo, Japan.
pubmed:publicationType
Journal Article