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BLASST-1 (Bladder Cancer Signal Seeking Trial): Nivolumab, Gemcitabine, and Cisplatin in Treatment of Muscle Invasive Bladder Cancer (MIBC) Undergoing Cystectomy

BLASST-1 (Bladder Cancer Signal Seeking Trial): Phase II Trial of Neoadjuvant Nivolumab With Cisplatin and Gemcitabine in Muscle-Invasive Bladder Cancer (MIBC) Patients Undergoing Radical Cystectomy

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03294304
Enrollment
43
Registered
2017-09-27
Start date
2018-01-29
Completion date
2021-07-01
Last updated
2021-12-16

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

Conditions

Muscle Invasive Bladder Cancer

Keywords

MIBC, UC, Immunotherapy, Bladder Cancer, Neoadjuvant, Nivolumab, Cisplatin, Gemcitabine

Brief summary

This is a multi-center Phase II study to determine the safety and efficacy of nivolumab when given in combination with cisplatin and gemcitabine as neoadjuvant treatment in patients with muscle-invasive bladder cancer (MIBC) prior to standard of care radical cystectomy. Patients will receive neoadjuvant treatment with nivolumab in combination with gemcitabine-cisplatin (GC) every 3 weeks for 4 treatment cycles over 12 weeks followed by standard of care radical cystectomy.

Interventions

DRUGNivolumab

Nivolumab will be given at a fixed dose of 360 mg IV over 30 minutes on Day 8 every 21 days for 4 cycles.

DRUGCisplatin

Cisplatin will be given at 70 mg/m2 IV over 30 minutes on Day 1 every 21 days, and based on treating physician's discretion, split-dose cisplatin can be given at 35 mg/m2 IV Day 1 and Day 8 every 21 days for 4 cycles.

DRUGGemcitabine

Gemcitabine will be given at 1000 mg/m2 IV over 30 minutes on days 1, 8, and every 21 days for 4 cycles.

Sponsors

Bristol-Myers Squibb
CollaboratorINDUSTRY
Masonic Cancer Center, University of Minnesota
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Diagnosis of MIBC (predominantly urothelial carcinoma) with clinical stage T2-T4a and N\<1 disease (solitary lymph node measuring \< 2 cm) and M0 and deemed eligible for radical cystectomy. * Age ≥ 18 years * ECOG Performance Status of 0 or 1. * Required initial laboratory values within 14 days of study enrollment: * Absolute Neutrophil Count ≥ 1500 cells/mm\^3 * Platelets ≥ 100,000 cells/mm\^3 * Hemoglobin ≥ 9.0 g/dL * Bilirubin ≤ 1.5 times the upper limit of normal (ULN) for the institution (For patients with known Gilbert's disease: bilirubin ≤ 3 x ULN) * Aspartate transaminase (AST) and alanine transaminase (ALT) ≤ 3.0 x ULN for the institution * Creatinine clearance ≥ 50 ml/min by Cockcroft-Gault formula or 24 hour urinary clearance (CrCl = \[140-age (years)\] x actual weight (kg) / \[72 x serum Cr (mg/dL)\] (if patient is female multiply the above by 0.85) or 24 hour urinary creatinine clearance. * Alkaline phosphatase ≤ 2.5 x ULN for the institution * INR and aPTT ≤ 1.5 x ULN if not on therapeutic anticoagulation. Patients receiving therapeutic anticoagulation will be allowed if maintained on a stable dose. * Females of childbearing potential and males who are not surgically sterile and with partners of childbearing potential must agree to use effective contraception during study treatment for 5 months for females and 7 months for males after the last dose of nivolumab. * Ability to provide a signed and dated consent or have a legally authorized representative to provide written and signed consent prior to the initiation of any research related procedures. * Patient must agree to submission of archived tumor (20-25 formalin-fixed paraffin embedded (FFPE) slides of 5-10 microns in thickness) from TURBT and radical cystectomy tissues. If archived samples are not available fresh tissue will be used. * Ability to provide written consent prior to the initiation of any research related procedures.

Exclusion criteria

* Presence of N2-3 or M1 disease. * Ineligible to receive cisplatin by meeting one or more of the following criteria; * Creatinine clearance of \< 50 mL/min * Hearing loss of 25 dB at two contiguous frequencies with testing required if a patient has hearing loss - At the investigator's discretion, and after discussion with the patient, this exclusion may be waived if the potential benefit of cisplatin therapy is felt to outweigh the risk of further hearing loss. * CTCAE v4 Grade 2 or higher peripheral neuropathy, * New York Heart Association Class III or IV heart failure * ECOG performance status 2 or higher. * Prior systemic therapy (intravenous) is not permitted. Prior intravesical therapies including intravesical gemcitabine is permitted for non-muscle invasive disease (i.e. T1 or lower). * Prior treatment with cisplatin for bladder cancer. * Prior treatment with anti-PD-1, CTLA-4, or anti-PD-L1 therapeutic antibody or pathway-targeting agents. * Prior therapeutic radiation to the bladder. * Major surgical procedure within 28 days prior to Cycle 1, Day 1 or anticipation of need for a major surgical procedure during the course of the study. * Any of the following within the 6 months prior to study drug administration: myocardial infarction, severe/unstable angina, symptomatic congestive heart failure (\>New York Heart Association Class 2), stroke, serious cardiac arrhythmia. * Human immunodeficiency virus (HIV) infection or acquired immunodeficiency syndrome (AIDS)-related illness. * Pregnancy, lactation, or breast-feeding. Women of childbearing potential must have a negative urine pregnancy test at screening. * History of autoimmune disease, including but not limited to myasthenia gravis, myositis, autoimmune hepatitis, systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, Wegener's granulomatosis, vascular thrombosis associated with antiphospholipid syndrome, Sjogren's syndrome, Guillain-Barre syndrome, multiple sclerosis, systemic vasculitis, or glomerulonephritis. * 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. * Active hepatitis B virus (HBV, chronic or acute, defined as having a positive hepatitis B surface antigen \[HBsAg\] test at screening) or hepatitis C antibody. Patients with past HBV infection or resolved HBV infection (defined as the presence of hepatitis B core antibody \[HBc Ab\] and absence of HBsAg) are eligible. HBV DNA must be obtained in these patients prior to Cycle 1, Day 1 and confirmed to be negative. Patients positive for hepatitis C virus (HCV) antibody are eligible only if polymerase chain reaction is negative for HCV RNA. * Active tuberculosis or BCG infection * Active infection requiring systemic antibiotics for more than 7 days within 3 days prior to Cycle 1, Day 1. Prophylactic short-term antibiotics will be allowed. * Administration of intravesical bacillus Calmette-Guerin (BCG) within 4 weeks before Cycle 1, Day 1 * Administration of a live, attenuated vaccine within 4 weeks before Cycle 1, Day 1 or anticipation that such a live attenuated vaccine will be required during the study. * Persisting toxicity from prior therapy (NCI CTCAE v4.03 Grade \>1); however alopecia or other Grade \<2 AEs not constituting a safety risk, based on Investigator's judgement, are acceptable. * History of or active bone marrow disorders expected to interfere with study therapy (e.g. acute leukemias, accelerated/blast-phase chronic myelogenous leukemia, chronic lymphocytic leukemia, Burkitt lymphoma, plasma cell leukemia, or non-secretory myeloma). * Prior allogeneic stem cell or solid organ transplant. * Known primary central nervous system (CNS) malignancy. * Patients with eczema, psoriasis, lichen simplex chronicus of vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted but patients with psoriasis require a baseline ophthalmologic exam to rule out ocular manifestations. Rash must cover less than 10% of body surface area (BSA) and must be well controlled at baseline and only requiring topical steroids. * Any other chronic medical condition or psychiatric condition, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that may affect the interpretation of the results or render the patient at high risk from treatment complications * Known additional malignancy that is progressing or requires active treatment. Exceptions include basal cell carcinoma of the skin, squamous cell carcinoma of the skin or in situ cervical cancer that has undergone potentially curative therapy. Patients on androgen deprivation therapy as part of adjuvant therapy after radiation for prostate cancer or patients on adjuvant hormonal therapies for breast cancer will be allowed if they are being considered for curative intent for bladder cancer. * Treatment with systemic immunostimulatory agents (including but not limited to interferon \[IFN\]-a or interleukin \[IL\]-2) within 4 weeks or five half-lives of the drug (whichever is shorter) prior to Cycle 1, Day 1 * Concomitant use of systemic corticosteroids at physiologic doses or \<10 mg/day of prednisone or equivalent. * Concomitant use of another investigational agent and/or treatment with an investigational agent within 4 weeks prior to Cycle 1, Day 1 (or within five halflives of the investigational product, whichever is longer). * Use of bisphosphonate therapy for osteoporosis will be allowed if started prior to study enrollment.

Design outcomes

Primary

MeasureTime frameDescription
Pathologic Response Rate (PaR) at Time of Radical Cystectomy. PaR is Defined as Absence of Residual MIBC at Cystectomy in the Surgical Specimen (Pathologic Down-staging to ≤pT1pN0 Which Includes pT0, pT1, pTa and pTis)Surgery Day 1Incidence of Measurable Disease pT in the TNM staging system refers to the size and extend of the primary tumor. The higher the number after the T, the larger the tumor or the more it has grown into nearby tissues. T's may be further divided to provide more detail, such as T3a and T3b. pTa refers to noninvasive papillary carcinoma. pTis refers to carcinoma in situ (CIS) or a flat tumor stage. pN refers to lymph nodes. N0 mans cancer has not spread to nearby lymph nodes.

Secondary

MeasureTime frameDescription
Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 2)Treatment Day 1 of cycle 2Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin
Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 3)Treatment day 1 of cycle 3Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin
Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 1)Treatment Day 1 of cycle 1Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin
Safety of Nivolumab With Gemcitabine/Cisplatin30 Days +/- 7 Days after last chemotherapyIncidence of Adverse Events
Count of Participants Experiencing Progression Free Survival (PFS)Every 3 Months for 2 YearsCount of participants experiencing Progression Free Survival (PFS)
Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 4)Treatment day 1 of cycle 4Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin

Countries

United States

Participant flow

Participants by arm

ArmCount
Nivolumab, Cisplatin, & Gemcitabine
Nivolumab: Nivolumab will be given at a fixed dose of 360 mg IV over 30 minutes on Day 8 every 21 days for 4 cycles. Cisplatin: Cisplatin will be given at 70 mg/m2 IV over 30 minutes on Day 1 every 21 days, and based on treating physician's discretion, split-dose cisplatin can be given at 35 mg/m2 IV Day 1 and Day 8 every 21 days for 4 cycles. Gemcitabine: Gemcitabine will be given at 1000 mg/m2 IV over 30 minutes on days 1, 8, and every 21 days for 4 cycles.
43
Total43

Baseline characteristics

CharacteristicNivolumab, Cisplatin, & Gemcitabine
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
22 Participants
Age, Categorical
Between 18 and 65 years
21 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
34 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
8 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
12 Participants
Race (NIH/OMB)
White
31 Participants
Region of Enrollment
United States
43 participants
Sex/Gender, Customized
Female
26 Participants
Sex/Gender, Customized
Male
15 Participants
Sex/Gender, Customized
Unknown
2 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
7 / 43
other
Total, other adverse events
42 / 43
serious
Total, serious adverse events
11 / 43

Outcome results

Primary

Pathologic Response Rate (PaR) at Time of Radical Cystectomy. PaR is Defined as Absence of Residual MIBC at Cystectomy in the Surgical Specimen (Pathologic Down-staging to ≤pT1pN0 Which Includes pT0, pT1, pTa and pTis)

Incidence of Measurable Disease pT in the TNM staging system refers to the size and extend of the primary tumor. The higher the number after the T, the larger the tumor or the more it has grown into nearby tissues. T's may be further divided to provide more detail, such as T3a and T3b. pTa refers to noninvasive papillary carcinoma. pTis refers to carcinoma in situ (CIS) or a flat tumor stage. pN refers to lymph nodes. N0 mans cancer has not spread to nearby lymph nodes.

Time frame: Surgery Day 1

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabinePathologic Response Rate (PaR) at Time of Radical Cystectomy. PaR is Defined as Absence of Residual MIBC at Cystectomy in the Surgical Specimen (Pathologic Down-staging to ≤pT1pN0 Which Includes pT0, pT1, pTa and pTis)27 Participants
Secondary

Count of Participants Experiencing Progression Free Survival (PFS)

Count of participants experiencing Progression Free Survival (PFS)

Time frame: Every 3 Months for 2 Years

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineCount of Participants Experiencing Progression Free Survival (PFS)36 Participants
Secondary

Safety of Nivolumab With Gemcitabine/Cisplatin

Incidence of Adverse Events

Time frame: 30 Days +/- 7 Days after last chemotherapy

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineSafety of Nivolumab With Gemcitabine/Cisplatin5 Participants
Secondary

Safety of Nivolumab With Gemcitabine/Cisplatin

Incidence of Adverse Events

Time frame: 4 weeks post radical cystectomy

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineSafety of Nivolumab With Gemcitabine/Cisplatin24 Participants
Secondary

Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 1)

Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin

Time frame: Treatment Day 8 of cycle 1

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineSafety of Nivolumab With Gemcitabine/Cisplatin (Cycle 1)27 Participants
Secondary

Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 1)

Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin

Time frame: Treatment Day 1 of cycle 1

Population: 2 participants were not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineSafety of Nivolumab With Gemcitabine/Cisplatin (Cycle 1)7 Participants
Secondary

Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 2)

Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin

Time frame: Treament day 8 of cycle 2

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineSafety of Nivolumab With Gemcitabine/Cisplatin (Cycle 2)15 Participants
Secondary

Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 2)

Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin

Time frame: Treatment Day 1 of cycle 2

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineSafety of Nivolumab With Gemcitabine/Cisplatin (Cycle 2)18 Participants
Secondary

Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 3)

Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin

Time frame: Treatment day 8 of cycle 3

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineSafety of Nivolumab With Gemcitabine/Cisplatin (Cycle 3)13 Participants
Secondary

Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 3)

Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin

Time frame: Treatment day 1 of cycle 3

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineSafety of Nivolumab With Gemcitabine/Cisplatin (Cycle 3)16 Participants
Secondary

Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 4)

Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin

Time frame: Treatment day 1 of cycle 4

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineSafety of Nivolumab With Gemcitabine/Cisplatin (Cycle 4)8 Participants
Secondary

Safety of Nivolumab With Gemcitabine/Cisplatin (Cycle 4)

Count of participants with Adverse Events related to Nivolumab with Gemcitabine/Cisplatin

Time frame: Treatment day 8 of cycle 4

Population: 2 participants are not evaluable

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nivolumab, Cisplatin, & GemcitabineSafety of Nivolumab With Gemcitabine/Cisplatin (Cycle 4)11 Participants

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