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About
This phase II trial compares the effect of erdafitinib alone to using the combination of erdafitinib and atezolizumab in treating patients with bladder cancer whose tumor invades the muscular bladder wall (muscle invasive)and who are ineligible for treatment with a chemotherapy drug called cisplatin. This trial also determines whether these treatment approaches are better than the usual approach for treating this type of cancer. The usual approach for treatment of someone with muscle invasive bladder cancer is chemotherapy with a drug called cisplatin followed by surgery (most common), or chemoradiation (radiation combined with chemotherapy) to the bladder (in some patients). However, half of the patients cannot get cisplatin due to safety concerns. This study has a screening step. The purpose of this step is to test patient's tumor to find out if it has a specific change (alteration) in the fibroblast growth factor receptor (FGFR) gene to determine patient's eligibility for this trial. Alteration of the FGFR gene causes bladder cancer cells to grow and divide abnormally. Erdafitinib is in a class of medications called kinase inhibitors. It works by blocking the action of an abnormal FGFR protein. This may help keep cancer cells from growing and may kill them. Immunotherapy with monoclonal antibodies, such as atezolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving erdafitinib alone or in combination with atezolizumab may help to shrink tumor cells at the time of surgery better than the usual treatment in muscle invasive bladder cancer.
Full description
PRIMARY OBJECTIVE:
I. To evaluate pathologic complete response (pCR) rates at radical cystectomy (RC) following neoadjuvant erdafitinib with or without atezolizumab in cisplatin-ineligible patients with muscle-invasive bladder cancer (MIBC) and susceptible FGFR3/2.
SECONDARY OBJECTIVES:
I. To determine the rate of pathologic downstaging (=< pT1N0M0) among patients who receive RC.
II. To determine the clinical complete response (cCR) rate in patients who do not undergo planned RC.
III. To determine pCR + cCR. IV. To evaluate 2-year disease-free survival (DFS). V. To evaluate the overall survival (OS) rate at 2 years. VI. To evaluate the safety and tolerability of study treatment as well as surgical complications in the RC group.
EXPLORATORY OBJECTIVES:
I. To correlate the reduction of plasma circulating tumor deoxyribonucleic acid (DNA) (ctDNA) during study treatment and the surveillance period with disease outcomes (pCR and cCR, pathologic downstaging, 2-year DFS and OS).
II. To correlate tumor response with baseline tissue, ctDNA FGFR3/2 mutation status, and molecular signature.
III. To characterize the baseline tumor tissue immune profile of FGFR3/2-aberrant tumors including programmed death-ligand 1 (PD-L1) expression, tumor mutational burden (TMB), and T cell infiltration (PD-L1 expression, peripheral blood mononuclear cell (PBMC), T cell receptor [TCR] repertoire).
IV. To characterize the changes in the above tumor tissue immune profile following study treatment.
V. To correlate baseline tumor tissue TMB with disease outcomes (pCR and cCR, pathologic downstaging, 2-year DFS and OS).
OUTLINE: Patients are randomized to 1 of 2 arms.
ARM I: Patients receive erdafitinib orally (PO). Patients undergo collection of blood and computed tomography (CT)/magnetic resonance imaging (MRI) at various time points throughout the trial and colposcopy at baseline.
ARM II: Patients receive erdafitinib PO and atezolizumab intravenously (IV). Patients undergo collection of blood and CT/MRI at various time points throughout the trial and colposcopy at baseline.
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Inclusion criteria
Patients must have muscle-invasive disease, tumor stage T2-T4, N0-1, based on transurethral resection of bladder tumor (TURBT) performed within 8 weeks prior to enrollment
Clinical stage T2-T4, N0 or N1, M0 by CT chest abdomen pelvis (or CT chest and MRI abdomen pelvis). Ultrasound, fluorine-18-fluorodeoxyglucose positron emission tomography (FDG-PET), and plain x-rays are not acceptable methods of evaluating clinical staging in the absence of CT or MRI scans
Histologically-confirmed urothelial carcinoma. Urothelial carcinoma with variant differentiation is allowed regardless of percentage. Other variant histology is allowed if urothelial carcinoma is the predominant histology (>= 50%), except neuroendocrine (any neuroendocrine carcinoma would be an exclusion criteria)
Patients must be eligible and planned for curative-intent RC, as determined by a urologic oncologist
Patients who are ineligible for or decline cisplatin-based chemotherapy.
Patients with susceptible FGFR3/2 alterations, based on tumor tissue testing, or blood ctDNA testing, performed by the local institution. (Given presence of intratumoral heterogeneity in FGFR3 status, a sample of the deeper part of the invasive tumor is preferred for tissue FGFR screening using baseline TURBT sample)
Patients with the following prior therapies are allowed:
Age >= 18 years; because no dosing or adverse event data are currently available on the use of erdafitinib in combination with atezolizumab in patients < 18 years of age, children are excluded from this study
ECOG performance status =< 2 (Karnofsky >= 60%)
Absolute neutrophil count >= 1,500/mcL (without granulocyte colony stimulating factor support) (within 14 days of study registration)
Platelets >= 100,000/mcL (within 14 days of study registration)
Hemoglobin >= 9 g/dL (stable for 2 weeks without transfusion or erythropoiesis-stimulating agent) (within 14 days of study registration)
Total bilirubin =< 1.5 x institutional upper limit of normal (ULN) (however, patients with known Gilbert disease who have serum bilirubin level >= 3 x ULN may be enrolled) (within 14 days of study registration)
Aspartate aminotransferase (AST) (serum aspartate aminotransferase [SGOT])/alanine aminotransferase (ALT) (serum glutamic pyruvic transaminase [SGPT]) =< 2.5 x institutional ULN or =< 5 x ULN for patients with liver metastases (within 14 days of study registration)
Alkaline phosphatase =< 2.5 x ULN (=< 5 x ULN for patients with documented liver or bone metastases) (within 14 days of study registration)
Serum creatinine =< 1.5 x institutional ULN (within 14 days of study registration) OR creatinine clearance >= 30 mL/min by Cockcroft-Gault (within 14 days of study registration)
Glomerular filtration rate (GFR) >= 30 mL/min/1.73 m^2 given this is a cisplatin-ineligible patient population (within 14 days of study registration)
International normalized ratio (INR) and activated partial thromboplastin time (aPTT) =< 1.5 x ULN (This applies only to patients who do not receive therapeutic anticoagulation; patients receiving therapeutic anticoagulation, such as low-weight heparin or warfarin, should be on a stable dose.) (within 14 days of study registration)
Serum albumin >= 2.5 g/dL (within 14 days of study registration)
Human immunodeficiency virus (HIV)-infected patients on effective anti-retroviral therapy with undetectable viral load within 6 months are eligible for this trial
For patients with evidence of chronic hepatitis B virus (HBV) infection, the HBV viral load must be undetectable on suppressive therapy, if indicated
Patients with a history of hepatitis C virus (HCV) infection must have been treated and cured. For patients with HCV infection who are currently on treatment, they are eligible if they have an undetectable HCV viral load
Patients with a prior or concurrent malignancy whose natural history or treatment does not have the potential to interfere with the safety or efficacy assessment of the investigational regimen are eligible for this trial
Patients should be New York Heart Association Functional Classification of class II or better
Patients should be greater than 4 weeks from receiving a live attenuated vaccine. Please note that non-live vaccines for seasonal influenza and vaccines intended to prevent SARS-CoV-2 and coronavirus disease 2019 (COVID-19) are allowed
Patients with nonmetastatic concomitant upper tract urothelial carcinoma (in addition to MIBC with susceptible FGFR alterations) are eligible for this trial
The effects of erdafitinib and atezolizumab on the developing human fetus are unknown. For this reason and because FGFR inhibitors and monoclonal antibodies are known to be teratogenic, women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, 1 month after completion of erdafitinib single agent, and 5 months after erdafitinib and atezolizumab combination. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately
Ability to understand and the willingness to sign a written informed consent document. Participants with impaired decision-making capacity who have a legally-authorized representative (LAR) and/or family member available will also be eligible
Exclusion criteria
History of another active malignancy within 2 years prior to screening, with the exception of malignancies with a negligible risk of metastasis or death (e.g., 5-year OS rate 90%), such as adequately treated carcinoma in situ of the cervix, ductal carcinoma in situ, stage I uterine cancer, non-melanoma skin cancer, resected in situ cancer, or definitively treated low risk prostate cancer
History of leptomeningeal disease
Patients with any metastases (including brain) will be excluded from this study as this study is enrolling patients with nonmetastatic urothelial bladder cancer
Uncontrolled tumor-related pain
Major surgical procedure, other than for diagnosis, within 4 weeks prior to initiation of study treatment, or anticipation of need for a major surgical procedure during the study
Patients with the following prior therapies are not allowed:
Patients with history of idiopathic pulmonary fibrosis, pneumonitis (including drug induced), organizing pneumonia (i.e., bronchiolitis obliterans, cryptogenic organizing pneumonia, etc.), or evidence of active pneumonitis on screening chest computed tomography (CT) scan. History of radiation pneumonitis in the radiation field (fibrosis) is permitted
Uncontrolled pleural effusion, pericardial effusion, or ascites requiring recurrent drainage procedures (once monthly or more frequently)
Patients with known primary immunodeficiency
Severe infection within 4 weeks prior to initiation of study treatment, including, but not limited to, hospitalization for complications of infection, bacteremia, or severe pneumonia, or any active infection that could impact patient safety
Treatment with therapeutic oral or IV antibiotics within 2 weeks prior to initiation of study treatment
Patients with prior allogeneic bone marrow transplantation or prior solid organ transplantation
History or risk of autoimmune disease, including, but not limited to, myasthenia gravis, myositis, autoimmune hepatitis, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, antiphospholipid antibody syndrome, Wegener granulomatosis, Sjogren syndrome, Guillain-Barre syndrome, or multiple sclerosis, with the following exceptions:
Patients with a history of autoimmune-related hypothyroidism on a stable dose of thyroid replacement hormone may be eligible
Patients with controlled Type 1 diabetes mellitus on a stable insulin regimen may be eligible
Patients with eczema, psoriasis, lichen simplex chronicus, or vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted provided all of the following conditions are met:
Treatment with systemic immunostimulatory agents (including, but not limited to, interferon [IFN]-alpha or interleukin [IL]-2) within 4 weeks or five half-lives of the drug (whichever is longer) prior to cycle 1, day 1
Treatment with systemic immunosuppressive medications (including, but not limited to, prednisone, cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti-tumor necrosis factor [anti-TNF] agents) within 2 weeks prior to cycle 1, day 1 or anticipation of need for systemic immunosuppressive medication during study treatment, with the following exceptions:
Patients with significant cardiovascular disease (such as New York Heart Association class III or greater cardiac disease, myocardial infarction, or cerebrovascular accident) within 3 months prior to initiation of study treatment, unstable arrhythmia, or unstable angina
Patients with significant endocrine alterations of calcium/phosphate homeostasis, unless well controlled
Uncontrolled or symptomatic hypercalcemia (ionized calcium > 1.5 mmol/L, calcium > 12 mg/dL or corrected serum calcium > ULN)
Persistent hyperphosphatemia > ULN despite medical management, within 14 days of first dose of study drug
Patients with active ocular disorder or abnormality likely to significantly increase the risk of eye toxicity:
Any other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding that contraindicates the use of an investigational drug, may affect the interpretation of the results, or may render the patient at high risk from treatment complications
Patients with psychiatric illness/social situations that would limit compliance with study requirements
Patients who have not recovered from adverse events due to prior anti-cancer therapy (i.e., have residual toxicities > grade 1) with the exception of alopecia
Treatment with any other agent administered for the treatment of the patient's cancer, within four half-lives or 4 weeks prior to cycle 1, day 1, whichever is shorter
History of allergic reactions attributed to compounds of similar chemical or biologic composition to erdafitinib or atezolizumab
History of severe allergic, anaphylactic, or other hypersensitivity reactions to chimeric antibodies, fusion proteins, or Chinese hamster ovary cell products or to any component of the atezolizumab formulation
Patients requiring any medications or substances that are moderate CYP2C9 inducers and strong CYP3A4 inducers are ineligible. Because the lists of these agents are constantly changing, it is important to regularly consult a frequently-updated medical reference. As part of the enrollment/informed consent procedures, the patient will be counseled on the risk of interactions with other agents, and what to do if new medications need to be prescribed or if the patient is considering a new over-the-counter medicine or herbal product
Pregnant women are excluded from this study because erdafitinib is an FGFR inhibitor and atezolizumab is a monoclonal antibody with the potential for teratogenic or abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with erdafitinib and atezolizumab, breastfeeding should be discontinued if the mother is treated with erdafitinib and atezolizumab
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Data sourced from clinicaltrials.gov
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