Identifying CNVs in 15q11q13 and 16p11.2 of Patients with Seizures Increases the Rates of Detecting Pathogenic Changes
Author(s) -
Gabrielle S. Vianna,
Mariana L. de Freitas,
Valdirene T. de Oliveira,
Rafaella X. Pietra,
Michele da S. Gonçalves,
Patrícia Rocha,
Rejane A.C. Monteiro,
Luana C.A. Ferreira,
Rosana R. Xavier,
Andréia M. Carvalho,
Patrícia R. de M. Lima,
Maria Augusta N.P. Monteiro,
Elvis C. Mateo,
Juliana GurgelGiannetti,
Giovana da C. César,
Joziele de Souza Lima,
Paula Frassinetti Vasconcelos de Medeiros,
Fernanda Sarquis Jehee
Publication year - 2016
Publication title -
molecular syndromology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.609
H-Index - 36
eISSN - 1661-8777
pISSN - 1661-8769
DOI - 10.1159/000450631
Subject(s) - multiplex ligation dependent probe amplification , copy number variation , medicine , etiology , subtelomere , epilepsy , pediatrics , bioinformatics , genetics , psychiatry , biology , genome , gene , exon
Chromosomal changes are frequently observed in patients with syndromic seizures. Understanding the genetic etiology of this pathology is crucial for the guidance and genetic counseling of families as well as for the establishment of appropriate treatment. A combination of MLPA kits was used to identify pathogenic CNVs in a group of 70 syndromic patients with seizures. Initially, a screening was performed for subtelomeric changes (MLPA P036 and P070 kits) and for the regions most frequently related to microdeletion/microduplication syndromes (MLPA P064). Subsequently, the MLPA P343 was used to identify alterations in the 15q11q13, 16p11.2, and 22q13 regions. Screening with MLPA P343 allowed a 10-15.7% increase in the detection rate of CNVs reinforcing the importance of investigating changes in 15q11q13 and 16p11.2 in syndromic patients with seizures. We also demonstrated that the MLPA technique is an alternative with a great diagnostic potential, and we proposed its use as part of the initial assessment of syndromic patients with seizures.
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