About this trial
This study will test whether enfortumab vedotin combined with pembrolizumab is an effective treatment for people with bladder cancer (urothelial carcinoma) involving the lymph nodes who are going to have surgery to remove their cancer (cystectomy). The researchers will look at whether treatment with enfortumab vedotin and pembrolizumab before surgery can get rid of cancer within the lymph nodes. They will also try to find out if this combination of drugs is effective at shrinking participants' cancer before their surgery.
The researchers think that a combination of enfortumab vedotin and pembrolizumab may help people with this disease because both drugs are designed to help the immune system attack and kill cancer cells. The researchers think the drugs may be more effective if given in combination rather than on their own.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Male/female participants who are at least 18 years of age on the day of signing informed consent with histologically confirmed diagnosis of muscle invasive bladder cancer (previously known as transitional cell) carcinoma (i.e., cancer of the bladder, renal pelvis, ureter, or urethra)
Clinical Stage T2-T4, N1-N3, M0 OR cT1, N2-N3, M0
Representative urothelial carcinoma FFPE tumor specimens (tumor blocks or 20 unstained slides). Patients with < 20 slides may be enrolled after discussion with the principal investigator.
Muscle invasive urothelial carcinoma of the bladder histologically confirmed at the enrolling institution from TURBT. (Urothelial carcinoma invading into the prostatic stroma with no histologic muscle invasion is allowed provided the extent of disease is confirmed via imaging and/or EUA.)
Disqualifiers
Evidence of NYHA functional class III or IV heart disease
Any of the following within 6 months prior to study drug administration: myocardial infarction, severe/unstable angina, coronary/peripheral artery bypass graft, symptomatic congestive heart failure, cerebrovascular accident, or transient ischemic attack
On-going cardiac dysrhythmias of NCI CTCAE Version 5.0 grade ≥ 2. However, stable atrial fibrillation controlled medically or with a device (i.e. pacemaker) or prior ablation is allowed
Pre-existing sensory grade ≥ 2 neuropathy
Trial design
Single group
Treatments tested in this trial
Enfortumab vedotin
DrugEnfortumab vedotin will be administered at 1.25 mg/kg on day 1 and day 8 of each 21-day cycle, for up to 6 cycles.
Pembrolizumab
DrugPembrolizumab will be administered on day 1 of each cycle, every 21 days, for 6 cycles.
Treatment groups
Trial outcomes
Primary outcomes
Pathologic complete response rate (pCR Rate)
Defined as lack of muscle invasive carcinoma (\<pT2) and the absence of lymph node metastasis (N0) in the final cystectomy specimen. Pathologic complete response to perioperative treatment is defined as the absence of carcinoma (pT0) and the absence of lymph node metastases (N0). Pathologists will assess surgical specimens systematically using criteria agreed upon for all conventional neoadjuvant treatment based on the AJCC TNM staging system.
Secondary outcomes
Event free survival (EFS)
Event-free survival will be measured from the initiation of treatment. Any of the following events will qualify as an event: * Primary progression of disease (from time of confirmatory scan) * Recurrence of disease post-operatively with metastatic or local pelvic recurrence after radical cystectomy. * Patients who do not proceed to cystectomy due to toxicity * The assessment of disease recurrence versus development of a second primary tumor will be left to the discretion of the treating physician. If the patient did not progress nor die, the patient will be censored on the date of last follow-up
Sponsors and contacts
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Memorial Sloan Kettering Cancer Center
Lead sponsor
Astellas Pharma US, Inc.
Collaborator
Seagen Inc.
Collaborator
Merck Sharp & Dohme LLC
Collaborator