| Inclusion Criteria: | 1) At least 18 years of age
2) Eastern Oncology Cooperative Group (ECOG) performance status of </=1
3) Absolute neutrophil count (ANC) >/= 1.5 x 10^9/L (without GCF support within 2 weeks of study day 1); platelet count >/= 100.0 x 10^9/L (without transfusion within 2 weeks of study day 1); and hemoglobin >/= 9.0 g/dL (erythropoietic agents allowed)
4) Subjects must have recovered (toxicity recovered to </= grade 1) from effects of recent surgery, radiotherapy or other therapy
5) The subject has measurable disease, defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded) as >/= 20 mm with conventional techniques or as >/=10 mm with spiral computerized tomography (CT) scan
6) Signed, IRB approved written informed consent
7) Patients previously treated on this protocol who have come off study for reasons not related to disease progression or toxicity may be re-entered into the study.
8) For STUDY ARM CONCENTRATION PHASE - Gemcitabine (Arm 3) - Pancreatic Cancer: Patients must have histological or cytologically confirmed adenocarcinoma of the pancreas.
9) For STUDY ARM CONCENTRATION PHASE - Gemcitabine (arm 3) - Pancreatic Cancer: Either a known BRCA 1 or 2 mutation identified by commercial assay, or a family history of at least 2 first degree relatives (parent, sibling, offspring), or 3 first or second degree relatives (grandparent, grandchild, uncle, aunt, nephew, niece, half-sibling) with BRCA 1-2-related cancers (breast, ovarian, prostate, pancreas, buccal cavity, pharynx, stomach, gallbladder, bile ducts, lymphoma, or melanoma) will be considered eligible for enrollment. Patients with personal or family histories of PALB2, FANC protein, RAD51, or other BRCA pathway mutations may also be included. |