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Radiation Therapy, Plasma Exchange, and Immunotherapy (Pembrolizumab or Nivolumab) for the Treatment of Melanoma

Radiation Therapy, Plasma Exchange, and Immunotherapy in Melanoma

Status
Completed
Phases
Early Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04581382
Enrollment
18
Registered
2020-10-09
Start date
2020-12-14
Completion date
2024-10-06
Last updated
2025-07-10

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

Conditions

Melanoma

Brief summary

This early phase I trial investigates how well radiation therapy, plasma exchange, and pembrolizumab or nivolumab work in treating patients with melanoma. Radiation therapy uses high energy x-rays to kill tumor cells and shrink tumors. Plasma exchange (also known as plasmapheresis) is a way to clean or flush out the blood. Immunotherapy with monoclonal antibodies, such as pembrolizumab and nivolumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Plasma exchange may help to improve the effect of standard radiation therapy and immunotherapy treatment on tumor cells of patients with melanoma.

Detailed description

PRIMARY OBJECTIVE: I. To determine the kinetics of soluble (s)PD-L1 removal and regeneration by plasma exchange in patients with melanoma. SECONDARY OBJECTIVES: I. To observe response at 3 months after plasma exchange plus immunotherapy. II. To observe ongoing response at approximate 3 month intervals after plasma exchange plus immunotherapy. CORRELATIVE RESEARCH OBJECTIVES: I. To determine the effects of plasma exchange on immune cell function. II. To observe the kinetics of extracellular vesicles (EVs) after plasma exchange in patients with melanoma. OUTLINE: Patients undergo radiation therapy daily on days 1-5 (weekdays). Patients then undergo therapeutic plasma exchange over 1-2 hours on the first session starting on the last day of radiation therapy and the last session ending prior to immunotherapy. Beginning day 5, patients receive pembrolizumab intravenously (IV) or nivolumab IV. Treatment with pembrolizumab continues every 3 weeks or treatment with nivolumab continues every 2 weeks in the absence of disease progression or unacceptable toxicity. Patients also undergo blood sample collection throughout the study and standard of care (SOC) computed tomography (CT), positron emission tomography (PET), and/or magnetic resonance imaging (MRI) scans as clinically indicated during follow-up. After completion of study treatment, patients are followed up at 3 weeks and then for up to 2 years.

Interventions

BIOLOGICALNivolumab

Given IV

BIOLOGICALPembrolizumab

Given IV

RADIATIONRadiation Therapy

Undergo radiation therapy

BIOLOGICALTherapeutic Exchange Plasma

Undergo therapeutic plasma exchange

PROCEDUREBiospecimen Collection

Undergo blood sample collection

PROCEDUREComputed Tomography

Undergo CT

PROCEDUREPositron Emission Tomography

Undergo PET

PROCEDUREMagnetic Resonance Imaging

Undergo MRI

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Mayo Clinic
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

* Histological confirmation of melanoma. Patients may have completed biopsy outside of Mayo Clinic, but there must be an internal review done to confirm diagnosis prior to confirming eligibility * Measurable or non-measurable disease * Eastern Cooperative Oncology Group (ECOG) performance status (PS) =\< 3 * sPD-L1 levels \> 1.7 ng/ml by enzyme-linked immunosorbent assay (ELISA) * Negative pregnancy test done =\< 7 days prior to radiation therapy, for women of childbearing potential only * Provide written informed consent * Willing to return to enrolling institution for follow-up (during the Active Monitoring Phase of the study) * Willing to provide blood samples for correlative research purposes

Exclusion criteria

* Persons taking a biotin supplement * sPD-L1 level \< 1.7 ng/ml by ELISA * Pregnant or nursing women * Men or women of childbearing potential who are unwilling to employ adequate contraception

Design outcomes

Primary

MeasureTime frameDescription
Feasibility of treatment approachUp to 2 yearsFeasibility will be assessed by being able to complete the study accrual in a reasonable time period.
Kinetics of soluble (s)PD-L1 removal and regeneration by plasma exchange in patients with melanomaUp to 2 yearsGraphical methods and descriptive statistics will be used to explore this endpoint. Assessed by the change in the sPD-L1 levels over time across the different timepoints of interest.

Secondary

MeasureTime frameDescription
Progression-free survival (PFS)Up to 2 yearsPFS is defined as the time from registration to the first of either disease progression or death from any cause.
Incidence of adverse events (AEs)Up to 2 yearsThe descriptions and grading scales found in the revised National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 will be utilized for AE reporting. The maximum grade for each type of AE will be recorded for each patient.
Overall survival (OS)Up to 2 yearsOS is defined as the time from registration to death from any cause.
Overall response rateUp to 2 yearsOverall response rate is the proportion of patients with a tumor response (partial response or complete response at least 4 weeks apart).

Other

MeasureTime frameDescription
Effects of plasma exchange on immune cell functionUp to 2 years
Kinetics of extracellular vesicles after plasma exchange in patients with melanomaUp to 2 yearsWill associate the kinetics with clinical outcome data (response rate, OS, PFS).

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 12, 2026