Author:
Balsera Aránzazu Margallo,Estévez Manuela Núñez,Beltrán Emilia Balboa,Sánchez-Giralt Plácida,García Luz González,Moreno Trinidad Herrera,García de Cáceres Mayte,Carbonell Pérez José M,Gómez Enrique Galán,Rodríguez-López Raquel
Abstract
Abstract
Background
To expose the unusual nature of a coincident sex chromosomal aneuploidy in a patient and his father. Molecular mechanisms involved probably are based on the sperm chromosome of paternal origin, which determine the mode of formation. Conventional cytogenetics techniques and multiple Quantitative Fluorescent PCR of STR markers in sexual chromosomes in the patient and his parents.
Results
48,XXYY and 47,XYY aneuploidies in the patient and his father, respectively, were identified. The additional X and Y chromosomes showed parental origin.
Conclusions
An infrequent origin of the 48,XXYY syndrome was demonstrated. Mostly, it is thought to result from an aneuploid sperm produced through two consecutive non disjunction events in both meiosis I and II in a chromosomally normal father, but in our father’s patient a 47,XYY was discovered. It is suggested that a higher incidence of 24,XY and 24,YY sperm may be possible in 47,XYY individuals andan increased risk for aneuploidy pregnancies may exist. Although 48,XXYY patients and Klinefelter syndrome are often compared, recently they are regarded as a distinct genetic and clinical entity.
Publisher
Springer Science and Business Media LLC
Subject
Biochemistry, medical,Genetics(clinical),Genetics,Molecular Biology,Molecular Medicine,Biochemistry
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