This is an investigational study. Gemcitabine is FDA approved and commercially available for the treatment of certain types of breast cancer, non-small cell lung cancer, pancreatic cancer, and ovarian cancer. Bevacizumab is FDA approved and commercially available for the treatment of colorectal, breast, lung, and brain cancer. Nab-paclitaxel is FDA approved and commercially available for the treatment of breast cancer. The combination of these drugs is investigational.