Table 3.

Summary of Molecular Subtypes

Molecular Subtypes	Features	Clinical Outcome	Therapeutic Response
Classical	High expression of epithelial and adhesion-related genes	Best prognosis	Gemcitabine-resistant; Erlotinib-sensitive
Quasi-Mesenchymal	High expression of mesenchyme-related genes	Worst prognosis	Gemcitabine-sensitive; Erlotinib-resistant
Exocrine-like	High expression of tumour cell-derived and genes-linked to digestive enzyme	Intermediate prognosis	Not reported

Note: Data from Collisson et al. ⁶⁷