Abstract
Background
Early detection and following appropriate treatments of hepatocellular carcinoma (HCC) is still the gold standard for favored outcome of HCC patients; nevertheless, a small portion of hepatitis B virus (HBV)-related small HCC (<5 cm) patients got poor prognosis. Furthermore, the study for small HBV–HCC was limited. Therefore, the aim of this study was to explore the potential genetic signature for HBV-related small HCC as novel prognostic factors.
Methods
We examined expression profiles of HBV-related small HCC using an Affymetrix U133A GeneChip, evaluated differential gene expression by quantitative real-time polymerase chain reaction (qRT-PCR), and finally validated these expression patterns by immunohistochemistry (IHC).
Results:
A total of 57 genes were differentially expressed between tumor and normal parts (n = 20 pairs) using Affymetrix U133A chip, and 16 genes were further evaluated by qRT-PCR. The result was compatible with the finding of oligonucleotide microarray (Pearson’s correlation, r = 0.87). Furthermore, the expression pattern in HCC tissue by IHC in another group of small HBV–HCC (n = 100) showed overexpression of either osteopontin (OPN) or glypican 3 (GPC3) is an independent prognostic factor for disease-free survival (DFS) in HBV-positive small HCC (P < 0.01 and 0.03, respectively). Long-term DFS and overall survival (OS) for small HBV–HCC patients with high risk (both elevated GPC3+/OPN+) were DFS 0%, OS 0%, respectively; on the other hand, DFS and OS in patients with moderate (only 1 gene elevated) or low (OPN−/GPC3−) risk were 35.0 and 46.5%, respectively.
Conclusions
Elevation of both OPN and GPC3 may act as an adverse indicator for HBV-related small HCC patients after curative resection.
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Acknowledgment
We are grateful to all our colleagues in the Department of Cancer Center, Pathology and the Genomic Medicine Research Core Laboratory of Chang Gung Memorial Hospital for their technical assistance. This study was supported by Chang Gung Memorial Hospital (CMRPG361521-2, Chen MF; CMRPG391001, Yu MC) and the National Science Council (NMRPG380081, Yu MC), Taiwan.
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Yu, MC., Lee, YS., Lin, SE. et al. Recurrence and Poor Prognosis Following Resection of Small Hepatitis B-Related Hepatocellular Carcinoma Lesions Are Associated with Aberrant Tumor Expression Profiles of Glypican 3 and Osteopontin. Ann Surg Oncol 19 (Suppl 3), 455–463 (2012). https://doi.org/10.1245/s10434-011-1946-2
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DOI: https://doi.org/10.1245/s10434-011-1946-2