MedTrace Logo

Pilot Phase 2 Study Whole Brain Radiation Therapy With Simultaneous Integrated Boost for Patients With Brain Metastases

NCT03189381 · Status: TERMINATED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 20

Last updated 2024-06-28

Study results available
· View outcomes & findings →

Summary

This trial is a pilot, Phase 2, sequential two-cohort study designed to test two de-escalated whole brain radiation therapy (WBRT) dose levels and assess their ability to maintain acceptable in-brain distant control. The WBRT dose would decrease as the study moves forward, both in terms of absolute value and equivalent dose in 2 Gray fractions (EQD2) (as determined by the linear quadratic radiobiological model). The absolute value of the simultaneous integrated boost (SIB) dose will change with each dose level because the number of fractions delivered will depend on the WBRT dose. As such, the SIB dose will be manipulated such that the EQD2 will remain essentially equivalent despite the difference in the number of fractions delivered. This design will ensure that the only variable is the change in WBRT dose.

The concept is that WBRT with SIB would be expected to maximize both local and in-brain distant control as has already been shown in studies exploring WBRT with SRS boost. However, by itself WBRT with SIB does not address the concern over neurocognitive outcomes. Therefore, investigators hypothesize that there is a lower WBRT dose threshold that will maintain acceptable in-brain distant control, particularly in the setting of a SIB to gross lesions to maintain treated lesion control. In addition, lower overall brain dose (including lower hippocampal dose without specific hippocampal avoidance) may potentially improve neurocognitive function. Investigators are also interested in evaluating treated lesion control, overall survival, neurocognitive sequelae of therapy, quality of life, performance status, and adverse effects of therapy. Biomarker identification for potential correlative circulating tumor DNA and microRNA is an exploratory endpoint to generate data for future prospective evaluation.

Conditions

Interventions

RADIATION

Cohort A

Cohort A - WBRT dose = 25 Gy, SIB dose = 42 Gy, # of daily fractions = 10, SIB dose in EQD2 = 49.7 Gy

RADIATION

Cohort B

Cohort B - WBRT dose = 20 Gy, SIB dose = 40 Gy, # of daily fractions = 8, SIB dose in EQD2 = 50.0 Gy

Sponsors & Collaborators

  • Indiana University

    lead OTHER

Principal Investigators

  • Kevin R. Shiue, MD · Indiana University School of Medicine

Study Design

Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
SEQUENTIAL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2017-09-21
Primary Completion
2022-09-30
Completion
2022-09-30
FDA Device
Yes

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03189381 on ClinicalTrials.gov