{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,7]],"date-time":"2026-11-07T01:36:33Z","timestamp":1794015393974,"version":"4.8.0"},"reference-count":71,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2016,7,15]],"date-time":"2016-07-15T00:00:00Z","timestamp":1468540800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American J of Med Genetics Pt A"],"published-print":{"date-parts":[[2016,9]]},"abstract":"<jats:sec>\n                    <jats:label\/>\n                    <jats:p>\n                      Patients with Beckwith\u2013Wiedemann syndrome (BWS) have an increased risk to develop cancer in childhood, especially Wilms tumor and hepatoblastoma. The risk varies depending on the cause of BWS. We obtained clinical and molecular data in our cohort of children with BWS, including tumor occurrences, and correlated phenotype and genotype. We obtained similar data from larger cohorts reported in the literature. Phenotype, genotype and tumor occurrence were available in 229 of our own patients. Minor differences in phenotype existed depending on genotype\/epigenotype, similar to earlier studies. By adding patients from the literature, we obtained data on genotype and tumor occurrence of in total 1,971 BWS patients. Tumor risks were highest in the IC1 (\n                      <jats:italic>H19\/IGF2<\/jats:italic>\n                      :IG\u2010DMR) hypermethylation subgroup (28%) and pUPD subgroup (16%) and were lower in the\n                      <jats:italic>KCNQ1OT1<\/jats:italic>\n                      :TSS\u2010DMR (IC2) subgroup (2.6%), CDKN1C (6.9%) subgroup, and the group in whom no molecular defect was detectable (6.7%). Wilms tumors (median age 24 months) were frequent in the IC1 (24%) and pUPD (7.9%) subgroups. Hepatoblastoma occurred mostly in the pUPD (3.5%) and IC2 (0.7%) subgroups, never in the IC1 and CDKN1C subgroups, and always before 30 months of age. In the CDKN1C subgroup 2.8% of patients developed neuroblastoma. We conclude tumor risks in BWS differ markedly depending on molecular background. We propose a differentiated surveillance protocol, based on tumor risks in the various molecular subgroups causing BWS. \u00a9 2016 Wiley Periodicals, Inc.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/ajmg.a.37801","type":"journal-article","created":{"date-parts":[[2016,7,15]],"date-time":"2016-07-15T11:05:47Z","timestamp":1468580747000},"page":"2248-2260","source":"Crossref","is-referenced-by-count":195,"title":["Phenotype, cancer risk, and surveillance in Beckwith\u2013Wiedemann syndrome depending on molecular genetic subgroups"],"prefix":"10.1002","volume":"170","author":[{"given":"Saskia M.","family":"Maas","sequence":"first","affiliation":[{"name":"Department of Pediatrics Academic Medical Center Amsterdam The Netherlands"},{"name":"Department of Clinical Genetics Academic Medical Center Amsterdam The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fleur","family":"Vansenne","sequence":"additional","affiliation":[{"name":"Department of Clinical Genetics University Medical Center Groningen Groningen The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel J. 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