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ACGH from cells derived from adult individuals with acute lymphoblastic leukemia

ABSTRACT: aCGH from cells derived from adult individuals with acute lymphoblastic leukemia

PROVIDER: PRJNA768435 | ENA |

REPOSITORIES: ENA

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aCGH from cells derived from adult individuals with acute lymphoblastic leukemia

Project description:Chromosomal instability is a characteristic of cancer, in acute lymphoblastic leukemia, several genes with aberrations have been reported that are currently used as diagnostic tools, prognostics and are even part of the treatment. The CGH microarrays performed in ten adult individuals with ALL, and the JURKAT and CEM cell lines, show that there are regions of shared loss on chromosomes 2, 9 and 14 and of gain on chromosomes 13 and 17 that are maintained in more than five of the samples.

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SNP array data for 304 pediatric and adult acute lymphoblastic leukemia cases

Project description:Copy number and LOH analysis was performed for 304 casesof B-progenitor and T-lineage acute lymphoblastic leukemia. All caseswere genotyped with Affymetrix 250k Sty and Nsp arrays. 252 cases werealso genotyped with Hind and Xba arrays. Keywords: Acute leukemia, BCR-ABL1, copy number analysis, loss-of-heterozygosity, genomics *** Due to privacy concerns, the primary SNP array data is no longer available with unrestricted access. Individuals wishing to obtain this data for research purposes may request access using the Web links below. ***

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Common chromosome gains and losses in acute lymphoblastic leukemia [RNA-seq]

Project description:To evaluate chromosomal aberrations that were first detected with aCGH at the transcriptome level, we obtained total RNA from a sample derived from an individual with untreated acute lymphoblastic leukemia (which we named M5) and from the JURKAT and CEM cell lines. Sequencing was performed by NOVOGEN Bioinformatics Technology Co., Ltd., in Beijing, China. The platform used was Illumina NovaSeq 6000.

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Adult and adolescent acute lymphoblastic leukemia

Project description:We present here a genome-wide map of abnormalities found in diagnostic samples from 45 adults and adolescents with acute lymphoblastic leukemia (ALL). 500K single nucleotide polymorphism (SNP) array analysis uncovered frequent genetic abnormalities, with cryptic deletions constituting half of the detected changes, implying that microdeletions are a characteristic feature of this malignancy. Importantly, the pattern of deletions resembled that recently reported in pediatric ALL, suggesting that adult, adolescent, and childhood cases may be more similar on the genetic level than previously thought. Thus, 70% of the cases displayed deletion of one or more of the CDKN2A, PAX5, IKZF1, ETV6, RB1, and EBF1 genes. Furthermore, several genes not previously implicated in the pathogenesis of ALL were identified as possible recurrent targets of deletion. In total, the SNP array analysis identified 367 genetic abnormalities not corresponding to known copy number polymorphisms, with all but two cases (96%) displaying at least one cryptic change. This SNP array study is the first to specifically address adult and adolescent ALL, and the resolution level is the highest used to date to investigate a malignant hematologic disorder. Our findings provide insights into the leukemogenic process and may be clinically important in adult and adolescent ALL. Most importantly, we report that microdeletions of key genes appear to be a common, characteristic feature of ALL that is shared between different clinical, morphological, and cytogenetic subgroups. Keywords: Genomic analysis of acute lymphoblastic leukemia samples

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