کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5525381 1546678 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Original ArticleWhole-genome sequencing reveals the mutational landscape of metastatic small-cell gallbladder neuroendocrine carcinoma (GB-SCNEC)
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی تحقیقات سرطان
پیش نمایش صفحه اول مقاله
Original ArticleWhole-genome sequencing reveals the mutational landscape of metastatic small-cell gallbladder neuroendocrine carcinoma (GB-SCNEC)
چکیده انگلیسی


- The incidence of GB-SCNEC is extremely low with poor prognosis.
- This study firstly examined the whole-genome somatic mutations of an advanced GB-SCNEC case.
- Non-silent variations in HMCN1 and CDH10 were observed in both the primary and metastatic tumors.
- The mutant genes of GB-SCNEC were enriched with ERBB signaling pathway and axon guidance et al.
- Structure variations, copy number variations and MSI instabilities were also observed.

Small-cell gallbladder neuroendocrine carcinoma (GB-SCNEC) is a relatively rare histological type of gallbladder cancer, and the genomic landscape of GB-SCNEC is rarely considered in treatment decisions. We performed whole-genome sequencing on an advanced case of GB-SCNEC. We identified approximately 900 high-quality somatic single nucleotide variants (SNVs) and small insertions and deletions (INDELs), 109 of which were shared by both the primary and metastatic tumor tissues. Somatic non-synonymous coding variations with damaging impact in HMCN1 and CDH10 were observed in both the primary and metastatic tissue specimens. A pathway analysis of the genes mapped to the SNVs and INDELs revealed gene enrichment associated with axon guidance, ERBB signaling et al. Furthermore, we identified 11 deletions, 4 tandem duplications and 5 inversions that mapped to known genes. Two gene fusions, NCAM2-SGCZ and BTG3-CCDC40 were also discovered and validated by Sanger sequencing. Additionally, we identified genome-wide copy number variations and microsatellite instability. In this study, we identified novel biological markers of GB-SCNEC that may serve as valuable prognostic factors or indicators of treatment response in patients with GB-SCNEC with lymphatic metastasis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cancer Letters - Volume 391, 10 April 2017, Pages 20-27
نویسندگان
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