{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T03:25:47Z","timestamp":1784863547049,"version":"3.55.0"},"reference-count":0,"publisher":"Akademiai Kiado Zrt.","issue":"23","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Orvosi Hetilap"],"published-print":{"date-parts":[[2017,6]]},"abstract":"<jats:p> Abstract: <\/jats:p><jats:p> Intruduction and aim: The Hungarian National Registry for Philadelphia chromosome negative myeloproliferative neoplasms has been developed. The aim of the recent study is to assess the clinical characteristics of Hungarian patients with polycythemia vera. Method: Data of 351 JAK2<jats:sup>V617F<\/jats:sup> and exon 12 mutation positive polycythemia vera patients were collected online from 15 haematology centres reporting epidemiologic, clinical characteristics, diagnostic tools, therapeutic interventions, thromboembolic complications, disease transformations. Vascular events prior to and after diagnosis were evaluated upon the Landolfi risk assessment scale. Results: 116 thromboembolic events were reported in 106 PV patients prior to diagnosis and 152 occasions in 102 patients during follow-up. The frequency of major arterial events were significantly reduced (p&lt;0.0001) and the minor venous events were significantly elevated (p&lt;0.0001) after the diagnosis. Major hemorrhagic complications were found in 25 and transformation in 26 cases. Conclusions: Our registry allows to collect and evaluate the features of patients with polycythemia vera. The Landolfi risk stratification was proven to be useful. Based on evaluated data, accuracy of diagnostic criteria and compliance to risk-adapted therapeutic guidelines are needed. Orv Hetil. 2017; 158(23): 901\u2013909. <\/jats:p>","DOI":"10.1556\/650.2017.30766","type":"journal-article","created":{"date-parts":[[2017,6,5]],"date-time":"2017-06-05T05:06:35Z","timestamp":1496639195000},"page":"901-909","source":"Crossref","is-referenced-by-count":2,"title":["Philadelphia-negat\u00edv kr\u00f3nikus Myeloproliferativ                     Neoplasia Magyarorsz\u00e1gi Regiszter. <i>Polycythaemia ver\u00e1s betegeink                         adatainak elemz\u00e9se<\/i>"],"prefix":"10.1556","volume":"158","author":[{"given":"P\u00e9ter","family":"Dombi","sequence":"first","affiliation":[{"name":"Szent Borb\u00e1la K\u00f3rh\u00e1z Tatab\u00e1nya"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u00c1rp\u00e1d","family":"Ill\u00e9s","sequence":"additional","affiliation":[{"name":"Hematol\u00f3giai Tansz\u00e9k, Debreceni Egyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar Debrecen"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Judit","family":"Demeter","sequence":"additional","affiliation":[{"name":"I. Belgy\u00f3gy\u00e1szati Klinika, Semmelweis Egyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar Budapest"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lajos","family":"Homor","sequence":"additional","affiliation":[{"name":"B\u00f6lcs\u00e9szet- \u00e9s T\u00e1rsadalomtudom\u00e1nyi Kar,                         P\u00e1zm\u00e1ny P\u00e9ter Katolikus Egyetem Piliscsaba (Esztergom)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zs\u00f3fia","family":"Simon","sequence":"additional","affiliation":[{"name":"Hematol\u00f3giai Tansz\u00e9k, Debreceni Egyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar Debrecen"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u00c1d\u00e1m","family":"Kellner","sequence":"additional","affiliation":[{"name":"Hematol\u00f3giai Oszt\u00e1ly, Somogy Megyei Kaposi M\u00f3r Oktat\u00f3 K\u00f3rh\u00e1z Kaposv\u00e1r, Talli\u00e1n Gy. u. 20\u201332., 7400"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u00c9va","family":"Kar\u00e1di","sequence":"additional","affiliation":[{"name":"Hematol\u00f3giai Oszt\u00e1ly, Somogy Megyei Kaposi M\u00f3r Oktat\u00f3 K\u00f3rh\u00e1z Kaposv\u00e1r, Talli\u00e1n Gy. u. 20\u201332., 7400"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erika","family":"Valasiny\u00f3szki","sequence":"additional","affiliation":[{"name":"Szent Borb\u00e1la K\u00f3rh\u00e1z Tatab\u00e1nya"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mikl\u00f3s","family":"Udvardy","sequence":"additional","affiliation":[{"name":"Hematol\u00f3giai Tansz\u00e9k, Debreceni Egyetem, \u00c1ltal\u00e1nos Orvostudom\u00e1nyi Kar Debrecen"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mikl\u00f3s","family":"Egyed","sequence":"additional","affiliation":[{"name":"Hematol\u00f3giai Oszt\u00e1ly, Somogy Megyei Kaposi M\u00f3r Oktat\u00f3 K\u00f3rh\u00e1z Kaposv\u00e1r, Talli\u00e1n Gy. u. 20\u201332., 7400"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"425","container-title":["Orvosi Hetilap"],"original-title":[],"language":"hu","link":[{"URL":"https:\/\/www.akademiai.com\/doi\/pdf\/10.1556\/650.2017.30766","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,2,19]],"date-time":"2019-02-19T15:06:25Z","timestamp":1550588785000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.akademiai.com\/doi\/10.1556\/650.2017.30766"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,6]]},"references-count":0,"journal-issue":{"issue":"23","published-print":{"date-parts":[[2017,6]]}},"alternative-id":["10.1556\/650.2017.30766"],"URL":"https:\/\/doi.org\/10.1556\/650.2017.30766","relation":{},"ISSN":["0030-6002","1788-6120"],"issn-type":[{"value":"0030-6002","type":"print"},{"value":"1788-6120","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,6]]}}}