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Recurrent intragenic exon rearrangements of SOBP and AUTS2 in non-Hodgkin B-cell lymphoma

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Abstract

Expression of intragenic exon rearrangements (IERs) has reportedly been detected in both normal and cancer cells. However, there have been few reports of occurrence of these rearrangements specific to neoplasms including malignant lymphoma. In this study, we detected IERs of ten genes (NBPF8, SOBP, AUTS2, RAB21, SPATA13, ABCC4, WDR7, PHLPP1, NFATC1 and MAGED1) in non-Hodgkin B cell lymphoma (B-NHL) cell line KPUM-UH1 using a high-resolution single nucleotide polymorphism array and reverse transcription polymerase chain reaction using reversely directed divergent primers within exons involved in genomic intragenic gains followed by sequencing analysis. Among them, the IERs involved in SOBP (6q21) exon 2 and 3 and AUTS2 (7q11.22) exon 2–4 were the molecular lesions specific to tumors and were frequently detected in B-NHL samples. These IERs constitute novel genetic alterations of B-NHL, which might be associated with tumorigenesis and be useful as genetic biological markers.

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Correspondence to Yosuke Matsumoto.

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12185_2019_2766_MOESM1_ESM.pptx

Supplementary Fig. 1: Sequencing analyses of eight genes with the IERs of KPUM-UH1. The IERs of NBPF8, ABCC4 and NFATC1 were in-frame. Supplementary Table 1: Cell lines and primary samples of various tumors analyzed in this study. Supplementary Table 2: Fifty-four genes with intragenic gains of the genomic DNA identified by means of high-density SNP genotyping arrays in KPUM-UH1. The amplified exons or introns are shown in parentheses. Ten genes shown in bold type were confirmed to have IERs by RT-PCR and subsequent sequencing analyses. Supplementary Table 3: The ten genes with the IERs detected in KPUM-UH1. Supplementary Table 4: The RDD primer sets of the ten genes with the IERs. Although RT-PCR was performed by using the RDD primer sets for 54 genes listed in Supplementary Table 2, the list of the primer sets of 44 genes are omitted. Supplementary Table 5: Primer sets for detection of the IERs of SOBP and AUTS2. The locations of these primers in SOBP and AUTS2 are shown in Figs. 3 and 4, respectively

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Matsumoto, Y., Chinen, Y., Shimura, Y. et al. Recurrent intragenic exon rearrangements of SOBP and AUTS2 in non-Hodgkin B-cell lymphoma. Int J Hematol 111, 75–83 (2020). https://doi.org/10.1007/s12185-019-02766-z

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  • DOI: https://doi.org/10.1007/s12185-019-02766-z

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