{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T14:27:42Z","timestamp":1786976862203,"version":"build-2736575974"},"reference-count":47,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2003,10,21]],"date-time":"2003-10-21T00:00:00Z","timestamp":1066694400000},"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":[[2004,4,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>From the study of numerical and structural chromosomal abnormalities, there is convincing evidence and accumulating information of a direct karyotype to phenotype correlation. Knowledge of phenotypic consequences of a specific chromosomal imbalance is important for genetic counseling and prenatal diagnosis. However, for unbalanced non\u2010Robertsonian translocations a precise karyotype to phenotype correlation is difficult to predict for several reasons: (I) unbalanced non\u2010Robertsonian translocations are rare, (II) the published case reports are often not age\u2010matched, (III) varying breakpoints result in different lengths of the monosomic and trisomic segments and therefore the phenotype will depend on additional genes present or the loss of coding regions, and (IV) the combination of the same trisomy with different monosomies, or vice versa, can result in diverging phenotypes. Therefore, the study of the karyotype to phenotype correlation in affected relatives of the same age and the identical unbalanced translocation provides a good model to investigate phenotypic consequences of a specific genetic imbalance. We report of two second trimester fetuses with the identical major partial trisomy 9 (9pter\u20109q22.2) and minor partial trisomy 7 (q35\u2010qter) resulting from a familial translocation (7;9)(q35;q22.2)mat. One fetus presented with a Dandy\u2013Walker malformation, polymicrogyria, and mild dysmorphic features, whereas the other fetus showed unilateral cleft lip and palate without cerebral anomalies. Potential mechanisms for this different phenotypic expression of the same unbalanced translocation resulting in partial trisomy 9 and 7 in the two cousins and possible consequences for genetic counseling and prenatal diagnosis are discussed. \u00a9 2003 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/ajmg.a.20563","type":"journal-article","created":{"date-parts":[[2004,3,26]],"date-time":"2004-03-26T11:16:05Z","timestamp":1080299765000},"page":"197-203","source":"Crossref","is-referenced-by-count":7,"title":["Phenotypical variation in cousins with the identical partial trisomy 9 (pter\u2010q22.2) and 7 (q35\u2010qter) at 16 and 23 weeks gestation"],"prefix":"10.1002","volume":"126A","author":[{"given":"S.","family":"Metzke\u2010Heidemann","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.","family":"Kuhling\u2010von 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