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Genomic and epigenetic aberrations of chromosome 1p36.13 have prognostic implications in malignancies

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Abstract

Deletions of chromosome 1p36 are common in malignancies; however, there is limited information regarding the biological and prognostic implications of 1p36 in cancer. Steroid Receptor–Associated and Regulated Protein (SRARP) is a tumor suppressor on chromosome 1p36.13 that its inactivation predicts poor cancer outcome, indicating that the 1p36.13 segment requires further studies. Therefore, a comprehensive multi-omics analysis of The Cancer Genome Atlas (TCGA), the Pan-Cancer Analysis of Whole Genomes (PCAWD), the International Cancer Genome Consortium (ICGC), and the Genomic Data Commons (GDC) Pan-Cancer datasets was conducted to investigate the prognostic implications of 1p36.13 in malignancies. This study revealed that expression and DNA methylation of multiple genes on 1p36.13 are significantly associated with survival in primary tumors and normal adjacent tissues. In addition, copy-number loss in every gene on 1p36.13 predicts poor cancer outcome. Importantly, copy-number loss and somatic mutations of chromosome 1p36.13 segment are associated with worse survival in primary tumors, and DNA hypermethylation of 1p36.13 predicts poor outcome in normal adjacent tissues. Therefore, genomic and epigenetic aberrations of chromosome 1p36.13 have promising prognostic implications in cancer.

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Abbreviations

SRARP:

Steroid Receptor–Associated and Regulated Protein

AR:

Androgen receptor

Mb:

Megabases

TCGA:

The Cancer Genome Atlas

RNAseq:

RNA sequencing

RSEM:

RNA Seq by Expectation Maximization

PCAWG:

The Pan-Cancer Analysis of Whole Genomes

GDC:

The Genomic Data Commons

FPKM-UQ:

Fragments per kilobase of transcript per million mapped reads upper quartile

ICGC:

International Cancer Genome Consortium

CNV:

Copy-number variation

FDR:

False discovery rate

DNA-VAF:

DNA-variant allele frequency.

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Authors

Contributions

AN conceived the study, carried out the bioinformatics and biostatistics analyses of datasets, interpreted the analyzed data, and drafted the manuscript.

Corresponding author

Correspondence to Ali Naderi.

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The author reports no conflict of interest.

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This article does not contain any studies with human participants or animals performed by the author. All datasets used for this study are publicly available and anonymized.

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Responsible Editor: Matthew Breen

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Naderi, A. Genomic and epigenetic aberrations of chromosome 1p36.13 have prognostic implications in malignancies. Chromosome Res 28, 307–330 (2020). https://doi.org/10.1007/s10577-020-09638-x

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  • DOI: https://doi.org/10.1007/s10577-020-09638-x

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