Abstract
Pancreatic ductal adenocarcinoma is one of the most dreaded malignancies and the 5th leading cause of cancer-related death in Korea. Late diagnosis and unfavorable response to both chemotherapy and radiotherapy result in exceptionally poor prognosis. Recently, the rapid advances of molecular biology allowed an in-depth understanding of pancreatic carcinogenesis, and there are many attempts to modulate signal pathway using specific targeted agent. However, the most of them have so far failed to improve survival significantly except erlotinib. The real challenge is now how these impressive advances of molecular biology could be successfully integrated into better clinical implications. Herein, we summarize the latest insights into the carcinogenesis, and their repercussions for novel targeted agents for pancreatic cancer, and provide a review of recent clinical trials using molecular targeted therapy.
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Fig. 1.
Schematic overview of major survival and proliferation signal pathways and molecular targeted agents currently evaluated in pancreatic cancer. RTK, receptor tyrosine kinase; Grb2, growth factor receptor bound protein 2; SOS, sons of sevenless homolog; MEK, mitogen activated pro-tein/extracellular signal regulated kinase kinase; ERK, extracellular signal regulated kinase; PI3K, phosphoinositide 3-kinase; PTEN, phosphatase and tensin homologue; mTOR, mammalian target of rapamycin; S6K1, S6 kinase 1; 4EBP, 4E binding protein; IGF-1R, insulin-like growth factor-1 receptor; VEGF, vascular endothelial growth factor; HIF, hypoxia inducible factor.

Table 1.
Results of Phase III Trials of Molecular Targeted Agents in Advanced/Metastatic Pancreatic Cancer