Clinical Trial With Vinflunine as Maintenance Therapy in Metastatic Urothelial Cancer

This is a clinical trial to evaluate the efficacy and safety of the drug vinflunine administered after the standard treatment of the combination gemcitabine+cisplatin, when it has reached stabilization or response of the disease, as the first treatment inmeditely after the diagnosis of advanced or metastatic urothelial cancer.

Vinflunine is a drug recently approved in Europe for the treatment of advanced or metastatic urothelial cancer after platinum-failure. It has proved to improve the survival results compared with the best suportive care. In adition, the tolerability was favourable, specially for not leading appearance of neuropathy nor other cumulative toxic effects.

In this study, it is proposed to test the feasibility, in terms of tolerability and efficacy of monotherapy with vinflunine in patients who, after completing the first-line cisplatin-based treatment for Transitional Cell Carcinoma of the Urothelial Tract (CCTU), have reached a stabilization or objective response. In order to have an adequate control group in the proposed design will be a phase II trial in which one group will receive standard management (follow-up until progression disease).

Eligibility Criteria:
Inclusion Criteria:

* Age \> 18 \& \< 80
* Written informed consent given by the patient
* Diagnosis of urothelium cells transition cancer subsidiary locally advanced or metastatic resection
* One measurable target lesion minimum
* ECOG 0 or 1
* Stabilization or objective response after first-line treatment 6 cycles of cisplatin+gemcitabine
* Last administration of cisplatin and gemcitabine \< 6 weeks
* Maximum grade I toxicity
* Adequate functions of bone marrow, kidney and liver
* Absence psychological, family, sociological or geographical disorder or other condition
* Women of childbearing potential must be using a medically accepted method of contraception (i.e. oral contraceptives, intrauterine devices) to avoid pregnancy during the 2 months preceding the start of study treatment, throughout the study period and for up to 3 months after the last dose of study treatment in such a manner that the risk of pregnancy is minimised. Women of childbearing potential must have a negative serum or urine pregnancy test within 72 hours prior to the start of study treatment.
* Fertile men must be using an effective method of birth control if their partners are women of childbearing potential up to 3 months after last administration of study medication.

Exclusion Criteria:

* ECOG \> 2
* Patients with age \> 80
* Patients with small cell carcinoma histology, lymphomas or sarcomas of the bladder.
* The patients that have received 7 or more cycles of a combination of cisplatin and gemcitabine in first line metastatic disease.
* Pregnant or lactating women or women with positive pregnancy test at screening, fertile sexual active women that did not use or do not wish or are unable to use an accepted method to prevent pregnancy during the 2 months prior to study treatment, during the study period and up to 3 months after the last dose of study treatment. Sexual active men who do not wish to use a method of birth during the study and up to 6 months after the last dose of study treatment if their partners are women of childbearing age.
* Known brain metastases or meningeal involvement. CT Scan not required to rule this unless there is clinical suspicion of disease of the central nervous system.
* Peripheral neuropathy grade 2 according to NCI-CTC version 4.0 \[Common Toxicity Criteria of the National Cancer Institute\].
* Prior radiation to \> 30% of the bone marrow, radiation completed at least 30 days or current persistence of any adverse event.
* Other serious diseases or medical conditions like: systemic infection that required a systemic anti-infective treatment(grades 3 or 4 of the Common Toxicity Criteria NCI, version 4.03) and uncontrolled medical disorder, for example: patients with unstable angina or myocardial infarction within 6 months before registration or uncontrolled diabetes.
* Progressive Disease during 1st line treatment of advanced or metastatic disease with chemotherapy systemic cisplatin and gemcitabine.
* Patients who have received more than one line of treatment for metastatic disease.
* Patients who received cisplatin in monotherapy or in combination as neoadjuvant treatment, adjuvant after initial surgery of urothelial cancer.
* Patients treated with another investigational drug or treatment antineoplastic agent cisplatin or gemcitabine than within 30 days before randomization.
* Other cancers except basal skin cancer treated in an appropriate, cervical cancer in situ or other tumor a disease-free interval of 5 years.
* Inadequate renal function defined by a calculated clearance serum creatinine \< 40 ml/min (Cockcroft-Gault).
* Known hypersensitivity to drug study or similar chemical structure drugs.
* Patients who require treatment with ketoconazole, itraconazole, ritonavir, amprenavir, indinavir, rifampin or phenytoin (any potent inhibitor or inducer of CYP3A4).
* Any concurrent chronic immunotherapy or prior organic allograft.