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  • Title: MLPA vs multiprobe FISH: comparison of two methods for the screening of subtelomeric rearrangements in 50 patients with idiopathic mental retardation.
    Author: Palomares M, Delicado A, Lapunzina P, Arjona D, Amiñoso C, Arcas J, Martinez Bermejo A, Fernández L, López Pajares I.
    Journal: Clin Genet; 2006 Mar; 69(3):228-33. PubMed ID: 16542387.
    Abstract:
    Subtelomeric rearrangements not visible by conventional cytogenetic analysis have been reported to occur in approximately 5% of patients with unexplained mental retardation (MR). As the prevalence of MR is high, many patients need to be screened for these chromosomal abnormalities routinely. Multiplex ligation-dependent probe amplification (MLPA) is a new technique for measuring sequence dosage, allowing large number of samples to be processed simultaneously and thus significantly reducing laboratory work. We have assessed its performance for the detection of subtelomeric rearrangements by comparing the results with those of our previous multiprobe fluorescence in situ hybridization (FISH) assay. We have tested 50 patients with idiopathic MR, dysmorphic features, congenital malformations, and/or familial history of MR. Our results show a high degree of concordance between the two techniques for the 50 samples tested. On the basis of these results, we conclude that MLPA is a rapid, accurate, reliable, and cost-effective alternative to FISH for the screening of subtelomeric rearrangements in patients with idiopathic MR.
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