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21.
Wieczorek D Prott EC Robinson WP Passarge E Gillessen-Kaesbach G 《Prenatal diagnosis》2003,23(2):128-133
We report on a live-born male with 46,XY/47,XY+4/47,XY,+6 mosaicism. Trisomy 4 mosaicism was detected by karyotyping chorionic villus samples (CVS) and was confirmed by the analysis of 16 metaphases obtained from cultured amniotic fluid cells. Eight metaphases were normal (46,XY), two had trisomy 4 (47,XY,+4), and two had trisomy 6 (47,XY,+6). Two postnatal chromosomal analyses of blood lymphocytes at birth and at the age of one week were normal. Chromosomal analysis of cultured skin fibroblasts from the right inguinal region at the age of 12 months revealed trisomy 4 (47,XY,+4) in 49 metaphases, trisomy 6 (47,XY,+6) in 2 metaphases, and a normal karyotype (46,XY) in 49 cells of the 100 analyzed metaphases, respectively. The main clinical findings consist of prenatal growth retardation, hypoplasia of the right side of the face, a dysplastic and posteriorly rotated right ear, a high vaulted palate, retrognathia, aplasia of the right thumb, hypoplasia of the fingernails, a deep sacral dimple, and patchy skin hypopigmentation of the right leg. When last seen at the age of 14 months, his development was nearly normal. Five patients with trisomy 4 mosaicism have been reported previously, but none with an additional trisomy 6 mosaicism. 相似文献
22.
Audrey D. Goddard Robert A. Phillips Valerie Greger Eberhard Passarge Wolfgang Höpping Xiaoping Zhu Brenda L. Gallie Bernhard Horsthemke 《Clinical genetics》1990,37(2):117-126
Use of an intragenic BamHI restriction fragment length polymorphism within the 5' end of the retinoblastoma gene (RB1) provided improved genetic counselling for five familial and ten non-familial retinoblastoma patients and their relatives. All other polymorphic probes within RB1 were uninformative in three families, and accuracy of diagnosis was improved by use of this polymorphism in two families. In 10/14 informative constitutional DNA-RB tumor DNA pairs, a reduction to homozygosity allowed identification of the RB1 allele at risk to carry a germline RB1 mutation. 相似文献
23.
Zhu G Gillessen-Kaesbach G Wirth J Passarge E Bartsch O 《American journal of medical genetics》2001,98(4):317-319
We describe a three-year-old girl with a triangular face, epicanthus, midfacial hypoplasia, apparently low-set ears, a small mouth with thin vermilion border, and a small chin, hypermobile joints, developmental delay with insecure gait, dystonic movement disorder, speech defect, and a history of unexplained undernutrition. She has a de novo, apparently balanced translocation t(5;10)(q35.2;q11.2). Using fluorescence in situ hybridization (FISH), we located the breakpoints in the 1.5-Mb area defined by YAC 753f5 (5q35.2) and within the approximately 2-Mb interval between 10cen and YAC 933a3 (10q11.21). 相似文献
24.
V Greger P Schirmacher J Bohl A Bornemann T Hürter E Passarge B Horsthemke 《Cancer》1990,66(9):1954-1959
Retinoblastoma tumor formation is initiated by the loss of function of both alleles of the RB-1 gene on chromosome 13. Patients with the hereditary form of retinoblastoma carry a germ line mutation at one of the two homologous gene loci in all cells and have an increased risk for nonocular tumors (mainly osteosarcoma and other mesenchymal tumors) in later life. The authors studied a 38-year-old patient with sinonasal undifferentiated carcinoma (SNUC) who had been treated for bilateral retinoblastoma by enucleation (left eye) and irradiation (right eye), respectively. Using molecular probes for the RB-1 gene and other loci on chromosome 13, the authors detected a deletion at the RB-1 locus in metastatic SNUC cells that was not present in normal tissue. These findings indicate that somatic mutations at RB-1 locus may be involved in the formation or progression of ectodermal tumors. 相似文献
25.
Familial microcephaly with normal intelligence, immunodeficiency, and risk for lymphoreticular malignancies: a new autosomal recessive disorder 总被引:10,自引:0,他引:10
E Seemanová E Passarge D Beneskova J Houst?k P Kasal M Sevcíková 《American journal of medical genetics》1985,20(4):639-648
We describe nine patients with an apparently new genetic disorder characterized by: microcephaly with normal intelligence; "bird"-like facial appearance; cellular and humoral immune defects; and increased risk for lymphoreticular malignancies. The postmortem findings of five patients are described. Chromosome instability appears not to be a component of the disorder. The occurrence in three pairs of sibs and isonomy in another family suggests autosomal recessive inheritance. 相似文献
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