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Träfflista för sökning "WFRF:(Tjonnfjord Geir E.) srt2:(2006-2009)"

Sökning: WFRF:(Tjonnfjord Geir E.) > (2006-2009)

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1.
  • Schneppenheim, Reinhard, et al. (författare)
  • A common origin of the 4143insA ADAMTS13 mutation
  • 2006
  • Ingår i: Thrombosis and Haemostasis. - : Schattauer GmbH. - 0340-6245. ; 96:1, s. 3-6
  • Tidskriftsartikel (refereegranskat)abstract
    • Severely deficient activity of the von Willebrand Factor (VWF) cleaving metalloprotease,ADAMTS 13, is associated with thrombotic thrombocytopenic purpura (TTP). The mutation spectrum ofADAMTS 13 is rather heterogeneous, and numerous mutations spread across the gene have been described in association with congenital TTP. The 4143insA mutation is unusual with respect to its geographic concentration. Following the initial report from Germany in which the 4143insA mutation was detected in four apparently unrelated families, we have now identified this mutation in a further eleven patients from Norway, Sweden, Poland, Germany, the Czech Republic and Australia. Confirmation that the Australian patient is of German ancestry, together with the Northern and Central European origin of most of the other patients, suggests that the 4143insA mutation has a common genetic background.We established ADAMTS 13 haplotypes by analyzing 17 polymorphic intragenic markers.The haplotypes linked to 4143insA were identical in all informative families. Three novel candidate mutations, C347S, P67IL and RI060W, as well as the known mutation R507Q, were also identified during the course of the study.We conclude that 4143insA has a common genetic background and is frequent among patients with hereditary ADAMTS 13 deficiency in Northern and Central European countries.
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2.
  • Micci, Francesca, et al. (författare)
  • Molecular cytogenetic characterization of t(14;19)(q32;p13), a new recurrent translocation in B cell malignancies
  • 2007
  • Ingår i: Virchows Archiv: an international journal of pathology. - : Springer. - 1432-2307. ; 450:5, s. 559-565
  • Tidskriftsartikel (refereegranskat)abstract
    • Translocations involving an immunoglobulin (IG) locus are a recurring theme in B cell neoplasia. The rearrangements lead to the joining of an IG gene with a (proto)oncogene, whereby the latter comes under the influence of transcription-stimulating sequences in the constitutively active IG locus resulting in deregulation of the oncogene and neoplastic growth. We present here three cases of B cell neoplasia that showed a t(14;19)(q32;p13) by karyotypic analysis. Detailed molecular cytogenetic characterization of the breakpoints on chromosomes 14 and 19 in the two cases from which extra material was available, demonstrated the involvement of the immunoglobulin heavy-chain (IGH@)-variable region on chromosome 14 in both and, in one case, that the breakpoint was within the BRD4 gene on chromosome 19. Against the background of what one knows about IGH@ involvement in lymphatic malignancies, it is difficult to envisage a fusion gene with qualitatively altered protein product as the crucial pathogenetic outcome of the translocation. In spite of the fact that we found BRD4 split by the t(14;19)(q32;p13) in one of the two informative cases, we cannot be sure that this was the pathogenetically relevant target gene. Other pathogenetic possibilities could be deregulation of the neighboring NOTCH3 and/or ABHD9 genes, located distal to BRD4 in 19p13.
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3.
  • Micci, Francesca, et al. (författare)
  • t(3;21)(q22;q22) leading to truncation of the RYK gene in atypical chronic myeloid leukemia
  • 2009
  • Ingår i: Cancer Letters. - : Elsevier. - 1872-7980. ; 277:2, s. 205-211
  • Tidskriftsartikel (refereegranskat)abstract
    • The analysis of a small number of patients with atypical chronic myeloid leukemia showing balanced chromosomal translocations has revealed diverse tyrosine kinase fusion genes, most commonly involving FGFR1, PDGFRA, PDGFRB, JAK2, and ABL. We present a case of aCML with a 3q22;21q22-translocation that led to truncation of the receptor-like tyrosine kinase (RYK) gene and its juxtaposition with sequences from chromosome 21 including the ATP50 gene coding for a mitochondrial ATP synthase. The resulting fusion was not in frame, however, which is why we speculate that an abrogated RYK gene product rather than a chimeric protein might be the leukemogenic result. (c) 2009 Elsevier Ireland Ltd. All rights reserved.
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