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About
This study will assess efficacy (based on response rate) and safety (based on grade ≥ 3 severe adverse effects) of the combination Gemcitabine Cisplatin (GC) + anti-PD-L1 (avelumab) in first-line treatment for locally advanced or metastatic urothelial bladder cancer patients, after 6 cycles of treatment (or at 18 weeks if less than 6 cycles have been given, or earlier if a second line treatment is needed, before this new anticancer treatment has been started).
Full description
Recent results in cancer research highlight the importance of immune checkpoints in the control of immune response and provide access to molecules interfering with the inhibited immune response during the development of cancer. Drugs targeted against CTLA-4, PD-1 or PD-L1 have shown efficacy in various tumor types. In locally advanced or metastatic urothelial bladder cancer (MBC), the standard first-line treatment is the association of Gemcitabine and Cisplatin (GC). Objective responses and prolonged objective responses have been reported with monoclonal antibodies against PD-1 or PD-L1 in MBC patients after failure of chemotherapy. Avelumab is an investigational fully human anti-PD-L1 IgG1 monoclonal antibody. Avelumab treatment did not show unexpected cross-toxicity with chemotherapy when studied in phase I / II in patients with different tumor types. So the combination at full doses of GC and avelumab seems appropriate.
The experimental treatment is a combination of GC and avelumab given for 6 cycles. The duration of each cycle is 3 weeks (Gemcitabine: dose of 1000 mg/m2 as an intravenous infusion over 30 minutes on Days 1 and 8 of each 21-day cycle; Cisplatin: dose of 70 mg/m2 as a slow intravenous infusion over 2 to 4 hours on Day 1 of each 21-day cycle; Avelumab: 10 mg/kg body weight administered Iv once every 3 weeks).
Patients who have received all scheduled treatments and whose disease has not progressed at the end of treatment will enter into disease follow-up. During this follow-up period, patients will have disease and safety assessments performed every 3 months. Patients will remain in follow-up for up to 1 year from last dose of treatment and will have survival follow-up.
Enrollment
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Inclusion criteria
Signed and dated informed consent;
Male or female, age ≥18 years at time of informed consent signature;
Histological confirmed locally advanced (any T N2-3) or metastatic urothelial bladder carcinoma, eligible to first-line treatment (previous neo adjuvant or adjuvant treatment must have been given and stopped more than one year before);
Evidence of progressive disease in the previous 6 months, documented by chest and/or abdominal CT-scan or MRI;
Measurable disease according to RECIST 1.1;
Karnofsky index ≥ 70%;
Availability of a representative formalin-fixed, paraffin-embedded (FFPE) tumour specimen (infiltrative urothelial bladder carcinoma or metastasis) collected within 12 months before Cycle 1 Day 1;
At least 3 weeks since the end of prior local intravesical treatment (BCG-therapy or ametycine) with resolution of all treatment-related toxicity to grade ≤1 (NCI CTCAE 4.0);
Palliative local treatment is allowed if performed ≥ 2 weeks prior study entry for radiotherapy, cimentoplasty or minor surgery, and ≥4 weeks for major surgery;
Adequate organ function as defined by the following criteria:
Women of childbearing potential must have a negative serum βHCG or urine pregnancy test within 7 days prior to initiation of treatment; both sexually active females and males (and their female partners) patients must agree to use two methods of effective contraception one of them being a barrier method, or to abstain from sexual activity during the study, for at least 3 months after the last administration of study treatment;
Willingness and ability to comply with scheduled visits, treatment plans, laboratory tests, and other study procedures;
Patient affiliated to a social security system or beneficiary of the same.
Exclusion criteria
Primary purpose
Allocation
Interventional model
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65 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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