Effects of subtelomeric copy number variations in miscarriages.
OBJECTIVE
This study was performed on miscarriage samples for chromosome analysis to detect copy number variations (CNVs) related to subtelomeric regions, and with these results we aimed to adapt multiplex ligation-dependent probe amplification (MLPA) method for prenatal diagnosis.


METHODS
The cell cultures and DNA isolations were performed on 60 miscarriage samples. For maternal contamination analysis, DNA isolations and quantitative fluorescent polymerase chain reactions were done using peripheric blood of mothers who had miscarriages. We compared short tandem repeat peak profiles of miscarriage samples and mothers. The subtelomeric regions of the chromosomes were assessed using the MLPA method.


RESULTS
Of 43 miscarriage samples, 19 had normal karyotype (44.2%), 10 had numerical abnormalities (23.3%), and 2 had structural abnormalities (4.7%). Subtelomeric 16q duplication was determined in 2 of the 30 miscarriage samples investigated with MLPA method (6.6%).


CONCLUSIONS
There is no statistically significant difference between two groups (p > 0.05). However, the fact that the 6.6% subtelomeric CNV found in miscarriage samples was not found in controls, showed that further studies are required. We recommend that the miscarriage samples of the couples with recurrent miscarriage should be analyzed in terms of subtelomeric CNV after the exclusion of other clinical reasons.
a School of Health, Ahi Evran University , Kirsehir , Turkey .
Akin
A
Tekcan
b Section of Medical Genetic, Department of Medical Biology , and.
Mehmet
M
Elbistan
b Section of Medical Genetic, Department of Medical Biology , and.
Sengul
S
Tural
c Department of Gynecology and Obstetrics, Faculty of Medicine , Ondokuz Mayis University , Samsun , Turkey.
Mehmet Bilge
MB
Çetinkaya
D037881:Aborted Fetus / Q000378:metabolism*; D000026:Abortion, Habitual / Q000235:genetics; D000022:Abortion, Spontaneous / Q000235:genetics*; D000328:Adult; D016022:Case-Control Studies; D002869:Chromosome Aberrations; D056915:DNA Copy Number Variations / Q000235:genetics*; D005260:Female; D006801:Humans; D007621:Karyotyping; D018895:Microsatellite Repeats / Q000235:genetics*; D060885:Multiplex Polymerase Chain Reaction; D016133:Polymerase Chain Reaction; D011247:Pregnancy
Infertility; pregnancy; urogenital system