{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T05:24:58Z","timestamp":1790400298564,"version":"4.1.0"},"reference-count":0,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[1998,12,1]],"date-time":"1998-12-01T00:00:00Z","timestamp":912470400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Genetic Testing"],"published-print":{"date-parts":[[1998,12]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Bloom syndrome (BS) is an autosomal recessive disorder characterized by small stature, immunodeficiency, chromosomal instability, and a predisposition to different types of cancer. Although extremely rare in the general population, BS is seen in about 1 in 48,000 Ashkenazi Jews. Mutation analysis of seven Ashkenazi BS probands has shown that all were homozygous for the same mutation in the BLM gene: 2281delATCTGAinsTAGATTC, also known as\n                    <jats:italic toggle=\"yes\">blm<\/jats:italic>\n                    <jats:sup>\n                      <jats:italic toggle=\"yes\">Ash<\/jats:italic>\n                    <\/jats:sup>\n                    . This finding, along with the increased incidence of BS among Ashkenazi Jews, suggests a founder effect for BS in this population. The purpose of this study was to determine the frequency of\n                    <jats:italic toggle=\"yes\">blm<\/jats:italic>\n                    <jats:sup>\n                      <jats:italic toggle=\"yes\">Ash<\/jats:italic>\n                    <\/jats:sup>\n                    mutation carriers in a randomly sampled Ashkenazi Jewish population in Israel. The initial study group included 1,613 Ashkenazi Jews who were referred for routine DNA screening tests (cystic fibrosis, Gaucher, Canavan, fragile X). None had a family history of BS. A group of 552 non-Ashkenazi Jews served as controls. Mutation analysis was performed by PCR amplification followed by analysis of a specific\n                    <jats:italic toggle=\"yes\">Bst<\/jats:italic>\n                    Nl restriction site, created by the\n                    <jats:italic toggle=\"yes\">blm<\/jats:italic>\n                    <jats:sup>\n                      <jats:italic toggle=\"yes\">Ash<\/jats:italic>\n                    <\/jats:sup>\n                    mutation. All positive carriers were confirmed by direct sequencing. Sixteen\n                    <jats:italic toggle=\"yes\">blm<\/jats:italic>\n                    <jats:sup>\n                      <jats:italic toggle=\"yes\">Ash<\/jats:italic>\n                    <\/jats:sup>\n                    carriers were detected among 1,613 Ashkenazi Jews (1 in 101), compared to none among 552 non-Ashkenazi individuals. In this study, Ashkenazi Jews of biparental Polish descent had a significantly higher proportion of the\n                    <jats:italic toggle=\"yes\">blm<\/jats:italic>\n                    <jats:sup>\n                      <jats:italic toggle=\"yes\">Ash<\/jats:italic>\n                    <\/jats:sup>\n                    mutation (1 in 37) compared to Ashkenazi Jews of non-Polish descent. These results provide further evidence that a founder effect is responsible for the increased incidence of Bloom syndrome among Ashkenazi Jews, particularly those of Polish descent.\n                  <\/jats:p>","DOI":"10.1089\/gte.1998.2.293","type":"journal-article","created":{"date-parts":[[2009,3,16]],"date-time":"2009-03-16T16:22:24Z","timestamp":1237220544000},"page":"293-296","source":"Crossref","is-referenced-by-count":42,"title":["High Frequency of a Common Bloom Syndrome Ashkenazi Mutation Among Jews of Polish Origin"],"prefix":"10.1177","volume":"2","author":[{"given":"Limor","family":"Shahrabani-Gargir","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruth","family":"Shomrat","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuval","family":"Yaron","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Avi","family":"Orr-Urtreger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joanna","family":"Groden","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cyril","family":"Legum","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2009,3,16]]},"container-title":["Genetic Testing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/gte.1998.2.293","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/gte.1998.2.293","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T12:19:17Z","timestamp":1775132357000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1089\/gte.1998.2.293"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1998,12]]},"references-count":0,"journal-issue":{"issue":"4","published-print":{"date-parts":[[1998,12]]}},"alternative-id":["10.1089\/gte.1998.2.293"],"URL":"https:\/\/doi.org\/10.1089\/gte.1998.2.293","relation":{},"ISSN":["1090-6576","1557-7473"],"issn-type":[{"value":"1090-6576","type":"print"},{"value":"1557-7473","type":"electronic"}],"subject":[],"published":{"date-parts":[[1998,12]]}}}