3 results
03/Jun/2020
DOI: 10.31744/einstein_journal/2020RC5335
ABSTRACT Chromosomal abnormalities are responsible for several congenital malformations in the world, some of these are associated to telomeric/subtelomeric deletions. The abnormalities involving the telomere of chromosome 12 are rare, with few reports of deletions involving 12q24.31 region in the literature, and, to our knowledge, only four of them in the 12q24.31-q24.33 region. We report a further case of interstitial deletion of bands 12q24.31-q24.33 associated with autism spectrum disorder. A 2-year-old boy with global developmental delay associated with multiple congenital […]
Keywords: 12q2431 deletion syndrome; Autism spectrum disorder; Chromosome aberrations; Developmental disabilities; Nervous system malformations
01/Jan/2016
DOI: 10.1590/S1679-45082016AO3592
ABSTRACT Objective To investigate chromosomal abnormalities by CGH-array in patients with dysmorphic features and intellectual disability with normal conventional karyotype. Methods Retrospective study, carried out from January 2012 to February 2014, analyzing the CGH-array results of 39 patients. Results Twenty-six (66.7%) patients had normal results and 13 (33.3%) showed abnormal results – in that, 6 (15.4%) had pathogenic variants, 6 (15.4%) variants designated as uncertain and 1 (2.5%) non-pathogenic variants. Conclusion The characterization of the genetic profile by CGH-array in […]
Keywords: Body dysmorphic disorders; Chromosome aberrations; Comparative genomic hybridization/methods; Intellectual disability; Karyotype
01/Apr/2011
01/Apr/2011
DOI: 10.1590/S1679-45082011AO2041
ABSTRACT Objective: To study the frequency of mutations that may lead to a good or bad prognosis, as well as their relation with the karyotype and immunophenotype in patients with acute myeloid leukemia. Methods: Thirty samples of patients with acute myeloid leukemia were studied, in which FLT3-ITD, FLT3-TKD and NPM1 mutations were investigated. All samples were submitted to immunophenotyping and 25 to karyotyping. Results: An occurrence of 33.3% NPM1 mutation and an equal number of FLT3-ITD mutation were observed. When […]
Keywords: Chromosome aberrations; Cytogenetics; Genetic makers; Leukemia, myeloid, acute/genetics