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Risk Enabled Therapy After Initiating Neoadjuvant Chemotherapy for Bladder Cancer (RETAIN)

A Phase II Trial of Risk Enabled Therapy After Initiating Neoadjuvant Chemotherapy for Bladder Cancer (RETAIN BLADDER)

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02710734
Enrollment
78
Registered
2016-03-17
Start date
2016-02-24
Completion date
2034-02-28
Last updated
2024-12-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Urothelial Carcinoma of the Bladder

Keywords

Urothelial

Brief summary

The aim of this study is to evaluate a risk-adapted approach to the treatment of muscle invasive bladder cancer. Each baseline transuretheral resection of bladder tumor (TURBT) sample will be sequenced while proceeding with neoadjuvant accelerated methotrexate, vinblastine, doxorubicin, and cisplatin (AMVAC) chemotherapy. Based on the mutational profile and the post AMVAC TURBT findings, patients will be treated with active surveillance (experimental arm), or standard of care intravesicle therapy, chemoradiation or surgery. We hypothesize that this approach will lead to non-inferior metastasis-free survival at 2 years, while preserving the bladder and thus quality-of-life for a proportion of patients.

Detailed description

This phase II trial studies how well maximal transurethral surgery (surgery performed with a special instrument inserted through the urethra) followed by accelerated methotrexate, vinblastine, doxorubicin hydrochloride, cisplatin, and radiation therapy work in treating patients with bladder cancer that has spread to the muscle. Drugs used in chemotherapy, such as methotrexate, vinblastine sulfate, doxorubicin hydrochloride, and cisplatin work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Radiation therapy uses high-energy x-rays to kill tumor cells and shrink tumors. Giving chemotherapy with radiation therapy may kill more tumor cells. Giving combination chemotherapy and radiation therapy before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed.

Interventions

DRUGMethotrexate

Administered Day 1 of each 14 day cycle for 3 cycles

DRUGVinblastine

Administered Day 1 of each 14 day cycle for 3 cycles

DRUGDoxorubicin

Administered Day 1 of each 14 day cycle for 3 cycles

DRUGCisplatin

Administered Day 1 of each 14 day cycle for 3 cycles

RADIATIONIntensity modulated radiation therapy (IMRT)

2.0 Gy per fraction to the whole bladder plus a margin for a total of 32 fractions (64.0 Gy). Radiation will be administered from Monday to Friday

Performed at before and after AMVAC and after chemoradiation and intravesicle therapy

DRUG5-FU

Continuous 24hr Intravenous infusion days 1-5 and 16-20 with radiation treatment

DRUGMitomycin C

Intravenous on day 1 with radiation treatment

Sponsors

Fox Chase Cancer Center
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Male or female patients ≥18 years. * Primary urothelial or predominantly urothelial carcinoma of the bladder. * Histologic evidence of muscularis propria invasion. * AJCC27 clinical stage T2-T4a . * No radiographic evidence of lymph node positivity (N0) or metastatic disease (M0). Clinical lymphadenopathy on staging CT greater than 1.5 cm in short axis must be biopsy proven negative. * ECOG performance status 0, 1, or 2. * Left ventricular ejection fraction ≥ 50% by MUGA or ECHO within 6 months of study entry. * Normal organ and bone marrow function as defined: Leukocytes ≥ 3,000/mcL Absolute neutrophil count ≥ 1,500/mcL Platelets ≥ 100,000/mcL Total bilirubin ≤ institutional upper limit of normal (ULN) AST(SGOT)/ALT(SGPT) ≤ 2.5 X institutional ULN Creatinine Creatinine Clearance ≥ 50 mL/min (calculated using the Cockroft-Gault formula or measured with 24 hour urine collection)

Exclusion criteria

* Any component of small cell histology. * Prior pelvic radiation therapy or patients who have undergone prior radiation to greater than or equal to 25% of the bone marrow within the past year are excluded due to risk of life threatening myelosuppression * Prior systemic chemotherapy; patients who have received any previous systemic chemotherapy or radiation therapy for urothelial carcinoma or cytotoxic chemotherapy for another malignancy within 1 year of study entry are ineligible. * Prior or concurrent malignancy of any other site except for non-melanoma skin cancer, unless disease free interval ≥ 5 years. * Patients who have received experimental agents within 4 weeks of study entry. * History of allergic reactions attributed to compounds of similar chemical or biologic composition to Methotrexate, Vinblastine, Adriamycin or Cisplatin or other agents used in the study * Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection (defined by current oral or intravenous antibiotic therapy), symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements. * Pregnant women are excluded from this study due to the potential for teratogenic or abortifacient effects of cytotoxic chemotherapy. * Known HIV-positive patients on combination antiretroviral therapy are ineligible because of the potential for pharmacokinetic interactions with cytotoxic chemotherapy. In addition, these patients are at increased risk of lethal infections when treated with marrow-suppressive therapy. * Patients with hydronephrosis that has not been addressed with an intervention such as placement of a stent. * Pregnancy & Women of Childbearing Potential

Design outcomes

Primary

MeasureTime frame
Metastasis-free survival (MFS) at 2 years.24 months

Secondary

MeasureTime frame
Ability to complete of 3 cycles of neoadjuvant AMVAC and chemoradiation therapy with 5-FU and mitomycin C.Up to 37 Weeks

Other

MeasureTime frameDescription
toxicity during each treatment arm according to NCI CTCAE v 4.01 criteria24 months
Proportion of patients with ≥cT1 disease after TURBT#2up to 22 weeks
Rate of urothelial carcinoma recurrence in active surveillance patients60 months
Endoscopic Tumor Quantification System score at each TURBT24 monthsAt each cystoscopic examination, the location and extent of tumor volume will be visually depicted and graded according to Endoscopic Tumor Quantification System
Quality of life with neoadjuvant AMVAC and subsequent risk-adapted treatment60 monthsAmerican Urologic Association (AUA) Symptom Index Score, Sexual Health Inventory for Men (SHIM) score or Female Sexual Function Index (FSFI) score
Proportion of patients requiring a cystectomy, either immediately after TURBT#2 or as salvage after surveillance or CRTup to 24 months
Overall survival and PFS of the entire cohort60 months

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 24, 2026