Study of Gemcitabine and Erlotinib Plus Sorafenib (GES) in Metastatic Pancreatic Cancer

1000 mg/m\^2, intravenous, Days 1, 8, 15 for every 28-day cycle. In the absence of disease progression or toxicity, a patient may continue to receive gemcitabine, erlotinib, and sorafenib until disease progression.

150 mg, taken orally, once a day, Days 1-28 for every 28-day cycle. In the absence of disease progression or toxicity, a patient may continue to receive gemcitabine, erlotinib, and sorafenib until disease progression.

400 mg, taken orally, twice a day, Days 1-28 for every 28-day cycle. In the absence of disease progression or toxicity, a patient may continue to receive gemcitabine, erlotinib, and sorafenib until disease progression.