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Methylation Statuses of H19DMR and KvDMR at WT2 in Wilms Tumors in Taiwan

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Pathology & Oncology Research

Abstract

Wilms tumor is the most common pediatric renal malignancy. Several genetic loci have been shown to be associated with its formation. Genetic or epigenetic aberrations at WT1 and WT2 loci have been implicated in the etiology of the majority of sporadic Wilms tumors. In our previous study, most Wilms tumors tested negative for both constitutional mutations and somatic mutations in the WT1 gene. Thus, WT2 may play an important role in these tumors. In the present study, we analyzed the methylation statuses of WT2 at 11p15 using methylation sensitive multiplex ligation-dependent probe amplification in six Wilms tumors. Paternal uniparental disomy at WT2 was observed in two Wilms tumors with epithelial components due to hypermethylation at H19DMR and hypomethylation at KvDMR. Our findings highlight the benefits of testing for 11p15 epigenetic abnormalities to identify Wilms tumors with epithelial components.

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Abbreviations

DMR:

differentially methylated region

DNA:

deoxyribonucleic acid

IC:

imprinting center

MAPK:

mitogen-activated protein kinase

MS-MLPA:

methylation sensitive multiplex ligation-dependent probe amplification

UV-VIS:

ultraviolet–visible

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Acknowledgments

The authors would like to thank GenePhile Bioscience Laboratory of Ko’s Obstetrics and Gynecology Clinic for help with acquisition of data.

Funding

This work was supported by a grant from Chung Shan Medical University (grant number CSMU-INT-108-2). The funding body had no role in the study design, study setting, analysis, or writing of the manuscript.

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Correspondence to Yen-Chein Lai.

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The authors have consulted the journal policy regarding compliance with ethical standards and declare that accepted principles of ethical and professional conduct have been followed. The authors include information regarding sources of funding (previous section) and potential conflicts of interest (financial or non-financial) (next section). As no patients were involved and no personal information was used, informed consent was not applicable.

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The authors declare that they have no competing interests.

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Ethics approval of the study procedures was obtained from the Institutional Review Board of Chung Shan Medical University Hospital via reference number CS2–16003.

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Lu, MY., Wang, WC., Hou, TC. et al. Methylation Statuses of H19DMR and KvDMR at WT2 in Wilms Tumors in Taiwan. Pathol. Oncol. Res. 26, 2153–2159 (2020). https://doi.org/10.1007/s12253-020-00802-6

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  • DOI: https://doi.org/10.1007/s12253-020-00802-6

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