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Low-Dose-Rate Brachytherapy Combined With Immune Checkpoint Inhibition in Cancer

Low-Dose-Rate Brachytherapy Combined With Immune Checkpoint Inhibition in Cancer

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04620603
Enrollment
5
Registered
2020-11-09
Start date
2021-05-27
Completion date
2026-09-01
Last updated
2026-05-05

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

Conditions

Cutaneous Malignant Melanoma, Renal Cell Cancer, Urothelial Cancer of Renal Pelvis

Keywords

Brachytherapy

Brief summary

This is a pilot study of combination low dose rate brachytherapy (LDR) added to standard of care (SOC) immunotherapy in stage III and IV melanoma, stage IV renal call cancer, and stage IV urothelial cancer.

Detailed description

The purpose of this study is to evaluate the effect of combining LDR with immune checkpoint inhibition in stage III and IV melanoma, stage IV renal call cancer, and stage IV urothelial cancer. This involves the addition of a treatment called brachytherapy to SOC immunotherapy. Brachytherapy is a form of radiation therapy where radioactive pellets are placed within a tumor to temporarily irradiate the tumor at a low level. This is the first time that this combination (immunotherapy and brachytherapy) has been used in humans. The objectives of this study are to evaluate the effect of combining LDR with immunotherapy, determine safety and feasibility, generate a toxicity profile, evaluate response, and overall survival.

Interventions

RADIATIONLow Dose Rate Brachytherapy (LDR)

LDR on treatment day 1

DRUGStandard-of-Care Immunotherapy

Standard or care immunotherapy will be administered at the FDA approved dose via IV infusion.

Sponsors

Case Comprehensive Cancer Center
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

* Participants must have histologically confirmed unresectable stage III or stage IV cutaneous melanoma, stage IV renal cell cancer, and stage IV urothelial cancer. * ECOG performance status 0-2. * Have measurable disease per RECIST v1.1 or iRECIST. Refer to Appendix B * Have the following clinical laboratory values: * Absolute neutrophil count (ANC) ≥ 1500/ μL * Hgb ≥ 9 g/dL * Platelet count ≥ 75, 000/ μL * Total bilirubin ≤ 1.5 x ULN (upper limit of normal) * AST and ALT ≤ 2x ULN * Serum Creatinine \< 2x ULN * Female participants who: * Are postmenopausal for at least 1 year before entering the screening visit, OR * Are surgically sterile, OR * Agree to practice true abstinence from heterosexual contact or agree to use effective contraception without interruption during the study therapy and 90 days after the last dose. * Male participants who: * Are surgically sterile, OR * Agree to practice true abstinence from heterosexual contact or agree to use effective contraception without interruption during the study therapy and 90 days after the last dose.

Exclusion criteria

* Participants diagnosed with uveal melanoma * Participants who have been treated with whole head radiation for brain metastases * Invasive cancers not being treated on this trial (i.e. lymphoma that received systemic therapy) diagnosed \< 3 years prior that required systemic treatment. This is intended to include a patient with melanoma who was diagnosed \< 3 years prior to screening for this trial that has received antecedent systemic therapy. * Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements. * Prior anti-cancer therapy for melanoma, renal cell cancer, or urothelial cancer less than 14 days prior to first dose of study treatment. * Pregnant or nursing females * Unwilling or unable to follow protocol requirements. * Any condition which in the Investigator's opinion deems the participant an unsuitable candidate to receive study treatment. * Other active non-melanoma, non-renal cell, or non-urothelial metastatic cancers requiring systemic treatment. * Participants currently receiving systemic corticosteroids doses over 15mg prednisone or equivalent. * Participants with uncontrolled HIV or hepatitis.

Design outcomes

Primary

MeasureTime frameDescription
Number of participants with tumor response assessed by Immunotherapy Response Evaluation Criteria in Solid Tumors (iRECIST)3 months after brachytherapyiRECIST was developed by the RECIST working group for the use of RECIST version 1.1 in cancer immunotherapy trials, to ensure consistent design and data collection. ORR is defined as the number of patients achieving a complete response (CR) or partial response (PR) based on iRECIST or RECIST v1.1 at any time during the study. CR = disappearance of all target lesions, PR is =\>30% decrease in sum of diameters of target lesions, progressive disease (PD) is \>20% increase in sum of diameters of target lesions, stable disease (SD) is \<30% decrease or \<20% increase in sum of diameters of target lesions. Estimation based on CT or MRI scans
Number of participants with tumor response assessed by RECIST v1.13 months after brachytherapyORR is defined as the number of patients achieving a complete response (CR) or partial response (PR) based on the Response Evaluation Criteria in Solid Tumors (iRECIST or RECIST v1.1) at any time during the study. CR = disappearance of all target lesions, PR is =\>30% decrease in sum of diameters of target lesions, progressive disease (PD) is \>20% increase in sum of diameters of target lesions, stable disease (SD) is \<30% decrease or \<20% increase in sum of diameters of target lesions. Estimation based on CT or MRI scans

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORJay Ciezki, MD

Cleveland Clinic, Case Comprehensive Cancer Center

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 6, 2026