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  • Title: 11q- syndrome: three cases and a review of the literature.
    Author: Leegte B, Kerstjens-Frederikse WS, Deelstra K, Begeer JH, van Essen AJ.
    Journal: Genet Couns; 1999; 10(3):305-13. PubMed ID: 10546104.
    Abstract:
    We report on three children with de novo terminal deletions of the long arm of chromosome 11 (11q-) and breakpoints in 11q23-q24. Eighty-nine other patients with partial monosomy 11q have been reported and were reviewed by us. Salient features of 11q- syndrome are psychomotor retardation, trigonocephaly, telecanthus/hypertelorism, broad depressed nasal bridge, micrognathia, low set abnormal ears, cardiac anomalies and hand/foot anomalies. Renal agenesis and anal atresia are reported first here. Supratentorial white matter abnormality on CT and MRI present in our second patient was reported in three patients. Increased mortality is caused by cardiac anomalies. A third of all patients with partial monosomy 11q had thrombocytopenia or pancytopenia and this seems to be related to the absence of band 11q23-q24. Seventy-six percent of patients have de novo deletions with breakpoints in 11q21-q25. There is no obvious correlation between the length of the deleted segment and the severity of the symptoms. In unbalanced chromosomal patterns with deletions of 11q involving bands 11q23-q24 the typical phenotype of 11q- syndrome remains recognizable. Deletions distal to 11q24.1 do not produce the typical 11q- syndrome.
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