Paternal Age: The Considerable Confounding Risk Factor in Chromosomal Aneuploidies

Chromosomal Aneuploidies and Early Embryonic Developmental Arrest

Background Selecting the best embryo for transfer, with the highest chance of achieving a vital pregnancy, is a major goal in current in vitro fertilization (IVF) technology. The high rate of embryonic developmental arrest during IVF treatment is one of the limitations in achieving this goal. Chromosomal abnormalities are possibly linked with chromosomal arrest and selection against abnormal fe...

[Paternal age as a risk factor for congenital malformations].

BACKGROUND The role of advanced maternal age as a risk factor for congenital malformations in offspring is known. However, the influence of paternal age is not clear. AIM To evaluate the association between advanced paternal age and the risk for congenital malformations. PATIENTS AND METHODS Analysis of maternal and paternal age of cases (malformed newborns) and controls from ECLAMC Databas...

Chromosomal Aneuploidies and Early Embryonic Developmental Arrest

BACKGROUND Selecting the best embryo for transfer, with the highest chance of achieving a vital pregnancy, is a major goal in current in vitro fertilization (IVF) technology. The high rate of embryonic developmental arrest during IVF treatment is one of the limitations in achieving this goal. Chromosomal abnormalities are possibly linked with chromosomal arrest and selection against abnormal fe...

Klinefelter syndrome and other sex chromosomal aneuploidies

The term Klinefelter syndrome (KS) describes a group of chromosomal disorder in which there is at least one extra X chromosome to a normal male karyotype, 46,XY. XXY aneuploidy is the most common disorder of sex chromosomes in humans, with prevalence of one in 500 males. Other sex chromosomal aneuploidies have also been described, although they are much less frequent, with 48,XXYY and 48,XXXY b...

Advancing Paternal Age and Risk of Autism