37 Adverse events occurring more frequently (≥3%) in Tarceva 100 mg plus gemcitabine-treated patients than in the placebo plus gemcitabine group in the pivotal study PA.3, and in at least 10% of patients in the Tarceva 100 mg plus gemcitabine group, are summarised by National Cancer Institute-Common Toxicity Criteria (NCI-CTC) Grade in Table 2.