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https://open.uns.ac.rs/handle/123456789/2827
Nаziv: | Clinical and laboratory characteristics of antithrombin deficiencies: A large cohort study from a single diagnostic center | Аutоri: | Gindele R. Selmeczi A. Oláh Z. Ilonczai P. Pfliegler G. Marján E. Nemes L. Nagy Á. Losonczy H. Gorana Mitić Mirjana Kovač Balogh G. Komáromi I. Schlammadinger Á. Rázsó K. Boda Z. Muszbek L. Bereczky Z. |
Ključnе rеči: | Antithrombin activity;Antithrombin deficiency;Assay sensitivity;Genotype-phenotype association;Mutation spectrum | Dаtum izdаvаnjа: | 1-дец-2017 | Čаsоpis: | Thrombosis Research | Sažetak: | © 2017 Elsevier Ltd Introduction Inherited antithrombin (AT) deficiency is a heterogeneous disease. Due to low prevalence, only a few studies are available concerning genotype-phenotype associations. The aim was to describe the clinical, laboratory and genetic characteristics of AT deficiency in a large cohort including children and to add further laboratory data on the different sensitivity of functional AT assays. Patients and methods Non-related AT deficient patients (n = 156) and their family members (total n = 246) were recruited. Clinical and laboratory data were collected, the mutation spectrum of SERPINC1 was described. Three different AT functional assays were explored. Results Thirty-one SERPINC1 mutations including 11 novel ones and high mutation detection rate (98%) were detected. Heparin binding site deficiency (type IIHBS) was the most frequent (75.6%) including AT Budapest3 (ATBp3), AT Padua I and AT Basel (86%, 9% and 4% of type IIHBS, respectively). Clinical and laboratory phenotypes of IIHBS were heterogeneous and dependent on the specific mutation. Arterial thrombosis and pregnancy complications were the most frequent in AT Basel and AT Padua I, respectively. Median age at the time of thrombosis was the lowest in ATBp3 homozygotes. The functional assay with high heparin concentration and pH 7.4 as assay conditions had low (44%) sensitivity for ATBp3 and it was insensitive for AT Basel and Padua I. Conclusion Type IIHBS deficiencies behave differently in clinical and laboratory phenotypes from each other and from other AT deficiencies. Heparin concentration and pH seem to be the key factors influencing the sensitivity of AT functional assays to IIHBS. | URI: | https://open.uns.ac.rs/handle/123456789/2827 | ISSN: | 493848 | DOI: | 10.1016/j.thromres.2017.10.023 |
Nаlаzi sе u kоlеkciјаmа: | MDF Publikacije/Publications |
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