Evaluation of Oxaliplatin and Gemcitabine in Patients With Metastatic Bladder Cancer

Inclusion Criteria: * All patients must have histologically or cytologically confirmed diagnosis of transitional cell carcinoma of the bladder. * Patients must have metastatic or locally recurrent transitional cell carcinoma of the bladder. Patients with locoregional disease must be considered incurable by means of locoregional therapy. * All sites of disease must be assessed and designated as measurable or non- measurable disease as documented by CT, MRI, X-ray physical exam or nuclear exam. All measurable disease must be assessed within 28 days prior to registration. All non-measurable disease must be assessed within 42 days prior to registration. * Patients must not have more than one prior chemotherapy regimen for recurrent/metastatic disease. Patients with initial locally advanced but nonmetastatic disease are allowed to have one prior chemotherapy regimen as part of the primary curative therapy. All chemotherapy must be completed 4 weeks prior to registration. Any number of prior biologic therapies (e.g. chimeric antibodies or kinase inhibitors) is permitted as part of the chemotherapy regimen. * Patients may have received prior radiotherapy if there has been complete recovery from all radiation-induced toxicities. At least 4 weeks must have elapsed from the completion of radiation therapy to the time of registration. If lesions within the radiation port are to be used to assess response to therapy, those lesions must have demonstrated clear progression by the criteria outlined in Section 10.1.2V following completion of radiation therapy. * Patients must not have a surgical procedure for bladder cancer within 4 weeks prior to registration. Patients must have completely recovered from all surgery prior to registration. * Patients must have adequate bone marrow reserve as evidenced by ANC \> 1,500 μl and platelets \> 100,000/ μl obtained within 14 days prior to registration. * Patients must have adequate hepatic function as evidenced by serum bilirubin \<1.5x the institutional upper limit of normal. Serum transaminase (SGOT or SGPT) be must \< 1.5 x the institutional upper limit of normal serum unless the liver is involved with tumor, in which case serum transaminase (SGOT or SGPT) must be \< 5 x the institutional limit of normal. These tests must be obtained within 14 days prior to registration. * Patients must have a creatinine \< 2 x the institutional upper limit of normal obtained within 14 days prior to registration. * All patients must be 18 years of age or older. * Patients must have a Zubrod performance of 0-2. * Patients must not have prior therapy with Oxaliplatin or Gemcitabine. Exclusion Criteria * Patients with severe psychiatric disorder are not eligible. * Patients with known brain metastasis are not eligible. However, brain imaging studies are not required for eligibility if the patient has no neurological signs or symptoms. If brain imaging studies are performed, they must be negative for disease. * No other prior malignancy is allowed except for adequately treated basal cell or squamous cell carcinoma, in situ cervical cancer, or adequately treated Stage I and II cancer from which the patient is in complete remission, or any other malignancy from which the patient has been disease-free for 5 years. * Patients with any evidence of active or uncontrolled infection, recent myocardial infarction, unstable angina, or life-threatening arrhythmia are not eligible. * Patients with any evidence of active or uncontrolled infection, recent myocardial infarction, unstable angina, or life-threatening arrhythmia are not eligible. * Patients with severe psychiatric disorder are not eligible. * Patients with known brain metastasis are not eligible. However, brain imaging studies are not required for eligibility if the patient has no neurological signs or symptoms. If brain imaging studies are performed, they must be negative for disease. * No other prior malignancy is allowed except for adequately treated basal cell or squamous cell carcinoma, in situ cervical cancer, or adequately treated Stage I and II cancer from which the patient is in complete remission, or any other malignancy from which the patient has been disease-free for 5 years.