CBM588, Nivolumab, and Ipilimumab in Treating Patients With Stage IV or Advanced Kidney Cancer
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ClinicalTrials.gov Identifier: NCT03829111 |
Recruitment Status :
Active, not recruiting
First Posted : February 4, 2019
Last Update Posted : October 14, 2022
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Condition or disease | Intervention/treatment | Phase |
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Advanced Renal Cell Carcinoma Clear Cell Renal Cell Carcinoma Metastatic Renal Cell Carcinoma Stage III Renal Cell Cancer AJCC v8 Stage IV Renal Cell Cancer AJCC v8 Unresectable Renal Cell Carcinoma | Drug: Clostridium butyricum CBM 588 Probiotic Strain Biological: Ipilimumab Biological: Nivolumab | Phase 1 |
PRIMARY OBJECTIVES:
I. To determine the effect of clostridium butyricum CBM 588 probiotic strain (CBM588) (in combination with nivolumab/ipilimumab) on the gut microbiome in patients with metastatic renal cell carcinoma (mRCC).
SECONDARY OBJECTIVES:
I. To evaluate the effect of CBM588 on the clinical efficacy of the nivolumab/ipilimumab combination.
II. To assess the effect of CBM588 on systemic immunomodulation of the nivolumab/ipilimumab combination in patients with mRCC.
III. To assess the effect of CBM588 on toxicities such as diarrhea and nausea using Common Terminology Criteria for Adverse Events (CTCAE) version (v) 5 criteria with the nivolumab/ipilimumab combination in patients with mRCC.
OUTLINE: Patients are randomized to 1 of 2 arms.
ARM I: Patients receive nivolumab intravenously (IV) over 30 minutes and ipilimumab IV over 30 minutes on day 1. Treatment repeats every 21 days for up to 4 cycles in the absence of disease progression or unacceptable toxicity. Beginning in cycle 5, patients receive nivolumab IV over 30 minutes on day 1. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity.
ARM II: Patients receive clostridium butyricum CBM 588 probiotic strain orally (PO) twice daily (BID), nivolumab IV over 30 minutes on day 1, and ipilimumab IV over 30 minutes on day 1. Treatment repeats every 21 days for up to 4 cycles in the absence of disease progression or unacceptable toxicity. Beginning in cycle 5, treatment with clostridium butyricum CBM 588 probiotic strain and nivolumab repeats every 28 days in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up at 30 days and periodically thereafter.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 30 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Pilot Study to Evaluate the Biologic Effect of CBM588 in Combination With Nivolumab/Ipilimumab for Patients With Metastatic Renal Cell Carcinoma |
Actual Study Start Date : | May 14, 2019 |
Estimated Primary Completion Date : | June 11, 2023 |
Estimated Study Completion Date : | June 11, 2023 |

Arm | Intervention/treatment |
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Active Comparator: Arm I (nivolumab, ipilimumab)
Patients receive nivolumab IV over 30 minutes and ipilimumab IV over 30 minutes on day 1. Treatment repeats every 21 days for up to 4 cycles in the absence of disease progression or unacceptable toxicity. Beginning in cycle 5, patients receive nivolumab IV over 30 minutes on day 1. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity.
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Biological: Ipilimumab
Given IV
Other Names:
Biological: Nivolumab Given IV
Other Names:
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Experimental: Arm II (CBM588, nivolumab, ipilimumab)
Patients receive clostridium butyricum CBM 588 probiotic strain PO BID, nivolumab IV over 30 minutes on day 1, and ipilimumab IV over 30 minutes on day 1. Treatment repeats every 21 days for up to 4 cycles in the absence of disease progression or unacceptable toxicity. Beginning in cycle 5, treatment with clostridium butyricum CBM 588 probiotic strain and nivolumab repeats every 28 days in the absence of disease progression or unacceptable toxicity.
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Drug: Clostridium butyricum CBM 588 Probiotic Strain
Given PO
Other Names:
Biological: Ipilimumab Given IV
Other Names:
Biological: Nivolumab Given IV
Other Names:
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- Change in Bifidobacterium composition of stool [ Time Frame: Baseline up to week 12 ]Will be assessed for patients on both arms.
- Change in Shannon index [ Time Frame: Baseline up to week 12 ]Using translational methods, will compute the Shannon index at baseline for a comparison of microbial diversity.
- Best overall response [ Time Frame: Up to 2 years ]Will be evaluated in this study using the new international criteria proposed by the revised Response Evaluation Criteria in Solid Tumors (RECIST). The association between treatment arm and overall response as per RECIST criteria (response observed versus [vs] not observed) will be examined using Fisher's exact test.
- Progression-free survival (PFS) [ Time Frame: From enrollment to progression, assessed up to 2 years ]The difference in progression free survival across the two groups will be explored graphically using Kaplan-Meier survival plots. Median PFS time for each of the two arms will be reported and Cox proportional hazards model will be used to estimate the hazard ratio and its confidence interval.
- Change in proportion of circulating regulatory T-cells (Tregs) [ Time Frame: Baseline up to 2 years ]Using translational methods will estimate the proportion of Tregs in the blood. This will be assessed graphically across serial timepoints of blood collection to ascertain any trends. Will compare the proportion of circulating Tregs with nivolumab/ipilimumab alone versus nivolumab/ipilimumab with clostridium butyricum CBM 588 probiotic strain (CBM588).
- Change in proportion of circulating myeloid-derived suppressor cells (MDSCs) [ Time Frame: Baseline up to 2 years ]Using translational methods will estimate the proportion of MDSCs in the blood. This will be assessed graphically across serial timepoints of blood collection to ascertain any trends. Will compare the proportion of circulating MDSCs with nivolumab/ipilimumab alone versus nivolumab/ipilimumab with CBM588.
- Change in IL-6, IL-8, and other cytokines/chemokines levels [ Time Frame: Baseline up to 2 years ]Using translational methods will estimate the proportion of serum cytokines in the blood. This will be assessed graphically across serial timepoints of blood collection to ascertain any trends. Will compare the IL-6, IL-8, and other cytokines/chemokines with nivolumab/ipilimumab alone versus nivolumab/ipilimumab with CBM588.
- Change in toxicities [ Time Frame: Baseline up to 2 years ]Will compare toxicities, such as diarrhea and nausea, using Common Terminology Criteria for Adverse Events version 5 with nivolumab/ipilimumab alone versus nivolumab/ipilimumab with CBM588.

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Be willing and able to provide informed consent for the trial
- Histological confirmation of RCC with a clear-cell component
- Advanced (not amenable to curative surgery or radiation therapy) or metastatic (American Joint Committee on Cancer [AJCC] stage IV) RCC
- Intermediate or poor risk disease by International Metastatic RCC Database Consortium (IMDC) classification
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No prior systemic therapy for RCC with the following exception:
- One prior adjuvant or neoadjuvant therapy for completely resectable RCC if such therapy did not include an agent that targets PD-1 or PD-L1 and if recurrence occurred at least 6 months after the last dose of adjuvant or neoadjuvant therapy
- Eastern Cooperative Oncology Group (ECOG) performance status < 2
- Measurable disease as per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1
- Any ethnicity or race
- Calculated creatinine clearance >= 30 milliliters per minute (mL/min) per the Cockcroft and Gault formula or serum creatinine < 1.5 x upper limit of normal (ULN)
- Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) < 3 x ULN (< 5 x ULN if liver metastases are present)
- Total bilirubin < 1.5 x ULN (except subjects with Gilbert syndrome, who can have total bilirubin up to 3.0 mg/dL)
- White blood cells (WBC) > 2,000/mm^3
- Neutrophils > 1,500/mm^3
- Platelets > 100,000/mm^3
Exclusion Criteria:
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Presence of untreated brain metastases. Patients with treated brain metastases must be stable for 4 weeks after completion of treatment and have documented stability on pre-study imaging. Patients must have no clinical symptoms from brain metastases and have no requirement for systemic corticosteroids amounting to > 10 mg/day of prednisone or its equivalent for at least 2 weeks prior to first dose of study drug. Patients with known leptomeningeal metastases are excluded, even if treated
- Not recovered to =< grade 1 toxicities related to any prior therapy before administration of study drug
- Favorable risk disease by IMDC classification
- Prior treatment with an anti-PD-1, anti-PD-L1, anti-PD-L2, anti-CD137, or anti-CTLA-4 antibody, or any other antibody or drug specifically targeting T-cell co-stimulation or checkpoint pathways
- Any active or recent history of a known or suspected autoimmune disease or recent history of a syndrome that required systemic corticosteroids (> 10 mg daily prednisone equivalent) or immunosuppressive medications except for syndromes which would not be expected to recur in the absence of an external trigger. Subjects with vitiligo or type I diabetes mellitus or residual hypothyroidism due to autoimmune thyroiditis only requiring hormone replacement are permitted to enroll
- Active interstitial lung disease (ILD)/pneumonitis or history of ILD/pneumonitis requiring treatment with systemic steroids
- Baseline pulse oximetry less than 92% "on room air"
- Current use, or intent to use, probiotics, yogurt or bacterial fortified foods during the period of treatment
- Any condition requiring systemic treatment with corticosteroids (> 10 mg daily prednisone equivalents) or other immunosuppressive medications within 14 days prior to first dose of study drug. Inhaled steroids and adrenal replacement steroid doses > 10 mg daily prednisone equivalents are permitted in the absence of active autoimmune disease
- Uncontrolled adrenal insufficiency
- Known medical condition (e.g., a condition associated with diarrhea or acute diverticulitis) that, in the investigator's opinion, would increase the risk associated with study participation or study drug administration or interfere with the interpretation of safety results
- Not recovered to =< grade 1 toxicities related to any prior therapy before administration of study drug
- Women who are pregnant or breastfeeding
- History of myocarditis or congestive heart failure (as defined by New York Heart Association functional classification III or IV), as well as unstable angina, serious uncontrolled cardiac arrhythmia, uncontrolled infection, or myocardial infarction 6 months prior to study entry
- White blood cells (WBC) < 2,000/mm^3
- Neutrophils < 1,500/mm^3
- Platelets < 100,000/mm^3
- Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) > 3 x upper limit of normal (ULN) (> 5 x ULN if liver metastases are present)
- Total bilirubin > 1.5 x ULN (except subjects with Gilbert syndrome, who can have total bilirubin 3.0 mg/dL)
- Calculated creatinine clearance < 30 millimeters per minute (mL/min) per the Cockcroft and Gault formula or serum creatinine > 1.5 x upper limit of normal (ULN)

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03829111
United States, California | |
City of Hope Medical Center | |
Duarte, California, United States, 91010 |
Principal Investigator: | Sumanta K Pal | City of Hope Medical Center |
Responsible Party: | City of Hope Medical Center |
ClinicalTrials.gov Identifier: | NCT03829111 |
Other Study ID Numbers: |
18523 NCI-2019-00248 ( Registry Identifier: CTRP (Clinical Trial Reporting Program) ) 18523 ( Other Identifier: City of Hope Comprehensive Cancer Center ) P30CA033572 ( U.S. NIH Grant/Contract ) |
First Posted: | February 4, 2019 Key Record Dates |
Last Update Posted: | October 14, 2022 |
Last Verified: | October 2022 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | No |
Carcinoma Carcinoma, Renal Cell Neoplasms, Glandular and Epithelial Neoplasms by Histologic Type Neoplasms Adenocarcinoma Kidney Neoplasms Urologic Neoplasms Urogenital Neoplasms Neoplasms by Site Female Urogenital Diseases |
Female Urogenital Diseases and Pregnancy Complications Urogenital Diseases Kidney Diseases Urologic Diseases Male Urogenital Diseases Nivolumab Ipilimumab Antineoplastic Agents, Immunological Antineoplastic Agents Immune Checkpoint Inhibitors Molecular Mechanisms of Pharmacological Action |