Clinical and Molecular Cytogenetic Analysis of a Rare Case of Mosaicism for Partial Trisomy 3p and Partial Trisomy 10q in Humans

Clinical and Molecular Cytogenetic Analysis of a Rare Case of Mosaicism for Partial Trisomy 3p... The results of comprehensive clinical examination and molecular cytogenetic analysis of a patient carrying chromosome 3p+ in 69% of the peripheral blood lymphocytes are presented. Using microdissection of the metaphase chromosomes followed by DOP–PCR, a DNA library specific for the abnormal chromosome was obtained. By fluorescence in situ hybridization (FISH) of this DNA library on chromosomes from the patient and a healthy donor, the aberrant chromosome was identified as der(3)t(3;10)(p25;q24.3). Since this chromosome was present in only a proportion of patient's cells studied and no chromosome aberrations were revealed in cells of his parents, the der(3)t(3;10) is suggested to appear de novo. The cells carrying der(3)t(3;10) are monosomic for a proportion of 3p25 and trisomic for 10q24.3 → qter. The developmental malformations revealed in the patient, such as the specific features of facial skeleton, mental retardation, microcephaly, and others are similar to those described previously in patients with partial 3p monosomy and 10q trisomy. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Clinical and Molecular Cytogenetic Analysis of a Rare Case of Mosaicism for Partial Trisomy 3p and Partial Trisomy 10q in Humans

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Subject
Biomedicine; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1023/A:1016629409285
Publisher site
See Article on Publisher Site

Abstract

The results of comprehensive clinical examination and molecular cytogenetic analysis of a patient carrying chromosome 3p+ in 69% of the peripheral blood lymphocytes are presented. Using microdissection of the metaphase chromosomes followed by DOP–PCR, a DNA library specific for the abnormal chromosome was obtained. By fluorescence in situ hybridization (FISH) of this DNA library on chromosomes from the patient and a healthy donor, the aberrant chromosome was identified as der(3)t(3;10)(p25;q24.3). Since this chromosome was present in only a proportion of patient's cells studied and no chromosome aberrations were revealed in cells of his parents, the der(3)t(3;10) is suggested to appear de novo. The cells carrying der(3)t(3;10) are monosomic for a proportion of 3p25 and trisomic for 10q24.3 → qter. The developmental malformations revealed in the patient, such as the specific features of facial skeleton, mental retardation, microcephaly, and others are similar to those described previously in patients with partial 3p monosomy and 10q trisomy.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Oct 16, 2004

References

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