Ontology highlight
ABSTRACT: Hepatitis B virus (HBV) infection is a major risk factor for hepatocellular carcinoma (HCC). In this study we sequenced the whole genome (~80X) and transcriptome of tumor and non-tumor samples from four HCC patients and identified over two hundred HBV integration sites. We found significant clonal expansion of HBV-integrated hepatocytes specifically in the tumor samples. We observed a diverse collection of genomic perturbations near viral integration sites, including gene disruption, viral promoter-driven human transcription, viral-human transcript fusion and DNA copy number alteration. We also sequenced one patient at ultra-high coverage (~240X) to build the most comprehensive HBV-integration landscape yet attempted. Our data suggest that the viral integration significantly expands carcinogenic opportunities in HBV-infected individuals.
PROVIDER: phs000384.v1.p1 | EGA |
REPOSITORIES: EGA
Jiang Zhaoshi Z Jhunjhunwala Suchit S Liu Jinfeng J Haverty Peter M PM Kennemer Michael I MI Guan Yinghui Y Lee William W Carnevali Paolo P Stinson Jeremy J Johnson Stephanie S Diao Jingyu J Yeung Stacy S Jubb Adrian A Ye Weilan W Wu Thomas D TD Kapadia Sharookh B SB de Sauvage Frederic J FJ Gentleman Robert C RC Stern Howard M HM Seshagiri Somasekar S Pant Krishna P KP Modrusan Zora Z Ballinger Dennis G DG Zhang Zemin Z
Genome research 20120120 4
Hepatitis B virus (HBV) infection is a leading risk factor for hepatocellular carcinoma (HCC). HBV integration into the host genome has been reported, but its scale, impact and contribution to HCC development is not clear. Here, we sequenced the tumor and nontumor genomes (>80× coverage) and transcriptomes of four HCC patients and identified 255 HBV integration sites. Increased sequencing to 240× coverage revealed a proportionally higher number of integration sites. Clonal expansion of HBV-integ ...[more]