Pembrolizumab and Magnetic Resonance Imaging With Ferumoxytol in Treating Patients With Non-small Cell Lung Cancer and Brain Metastases

Stage IV Lung Non-Small Cell Cancer AJCC v7 Clinical Trial

Official title: The Use of Perfusion MRI Using Ferumoxytol and Small Molecular Weight Gadolinium (Gd) Agents to Assess Response to Pembrolizumab in Brain Metastases and Systemic Lesions in NSCLC: A Comparison of Imaging Modalities to Address Brain Metastases, Pseudoprogression, and Systemic Lesion Tumor Flare (Neuro-Check Pilot)

Status Terminated

Clinical Trial Summary

This pilot phase II trial study evaluates the usefulness of the ferumoxytol steady state magnetic resonance imaging (MRI) technique for response assessment after pembrolizumab and radiation therapy in non-small cell lung cancer that has spread to the brain (brain metastases). The interactions of monoclonal antibodies such as pembrolizumab, and the body's immune system may result in an anti-tumor effect. However, it may also increase inflammation around the tumor which cannot be differentiated from true tumor growth on standard MRI. This study evaluates ferumoxytol as an MRI contrast agent to differentiate this treatment related inflammation from true tumor growth.

Clinical Trial Description

PRIMARY OBJECTIVE:

I. Determine the sensitivity and specificity of relative cerebral blood volume (rCBV) measured by steady state magnetic resonance imaging (MRI) with ferumoxytol in predicting true versus (vs) pseudoprogression after stereotactic radiosurgery (SRS) and intravenous (IV) pembrolizumab in subjects with brain metastases from non-small cell lung cancer (NSCLC).

SECONDARY OBJECTIVES:

I. Evaluate the safety and tolerability of pembrolizumab when given with SRS in subjects with brain metastasis.

II. Evaluate progression free survival, overall survival, best response in brain disease, best response in systemic disease, and duration of best responses of brain and systematic diseases.

EXPLORATORY OBJECTIVES:

I. Compare the immune response as determined by the volume, pattern and intensity of delayed (24 hour [hr]) ferumoxytol uptake between subjects who develop true vs pseudoprogression.

II. Investigate the serum immunological parameters and correlate clinical as well as radiological response with systemic immune response to pembrolizumab as measured by immunological panel.

III. Compare the changes percentage expression in PDL-1 in the biopsy tissue before and after therapy at the time of progression.

IV. In subjects with measurable systemic lesions, investigate the feasibility of measuring vascular volume fraction (VVF), vessel size index (VSI) and vessel density index (VDI) as surrogate for response (true vs. pseudoprogression, as measured with Response Evaluation Criteria in Solid Tumors [RECIST] 1.1 criteria).

OUTLINE:

Patients receive pembrolizumab intravenously (IV) over 30 minutes on day 1. Cycles repeat every 3 weeks for up to 2 years (or up to 32 cycles) in the absence of disease progression or unacceptable toxicity. Patients also receive ferumoxytol IV and undergo MRI at baseline, 12 weeks after radiation, at suspected radiographic progression, and 6 weeks after suspected radiographic progression.

After completion of study treatment, patients are followed up at 30 days, every 12 weeks for up to 1 year, and then every 6 months thereafter. ;

Related Conditions & MeSH terms

• Brain Neoplasms
• Lung Carcinoma Metastatic in the Brain
• Stage IV Lung Non-Small Cell Cancer AJCC v7

• NCT number: NCT03325166
• Study type: Interventional
• Source: OHSU Knight Cancer Institute
• Status: Terminated
• Phase: Phase 2
• Start date: November 3, 2017
• Completion date: March 1, 2021