ArticleFrontiers in oncology2023
Integrating copy number data of 64 iAMP21 BCP-ALL patients narrows the common region of amplification to 1.57 Mb.
Article in Frontiers in oncology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Biological and pathogenic roles of major genes harbored in intrachromosomal amplification of chromosome 21 in childhood acute lymphoblastic leukemia (Review).Oncology letters · 2026Review
- Single Nucleotide Polymorphism Microarray Analysis Unveils Copy-Number Abnormalities and Genetic Heterogeneity in Malaysian Childhood B-Cell Precursor Acute Lymphoblastic Leukemia.Molecular genetics & genomic medicine · 2026Article
- Article
- Challenging Conventional Diagnostic Methods by Comprehensive Molecular Diagnostics: A Nationwide Prospective Comparison in Children With ALL.JCO precision oncology · 2025Article
- Acute lymphoblastic leukaemia.Nature reviews. Disease primers · 2024Review
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Authors and funding
7 authors.
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Abstract
Background and purpose: Intrachromosomal amplification of chromosome 21 (iAMP21) is a rare subtype of B-cell precursor acute lymphoblastic leukaemia (BCP-ALL). It is unknown how iAMP21 contributes to leukaemia. The currently known commonly amplified region is 5.1 Mb. Methods: We aimed to narrow down the common region of amplification by using high resolution techniques. Array comparative genomic hybridization (aCGH) was used to determine copy number aberrations, Affymetrix U133 Plus2 expression arrays were used to determine gene expression. Genome-wide expression correlations were evaluated using Globaltest. Results: We narrowed down the common region of amplification by combining copy number data from 12 iAMP21 cases with 52 cases from literature. The combined common region of amplification was 1.57 Mb, located from 36.07 to 37.64 Mb (GRCh38). This region is located telomeric from, but not including, Discussion: The more precise definition of the common region of amplification could be beneficial in the diagnosis of iAMP21 based on copy number analysis from DNA sequencing or arrays as well as stimulate functional research into the role of the included genes in iAMP21 biology.
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