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Phase 2 Trial of G207 + 5 Gy Radiation for Children With High-Grade Gliomas

Phase 2 Trial of G207 + 5 Gy Radiation for Children With High-Grade Gliomas

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07649070
Enrollment
38
Registered
2026-06-15
Start date
2026-11-30
Completion date
2032-12-31
Last updated
2026-07-29

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

Conditions

High Grade Gliomas

Brief summary

The goal of this clinical research study is to learn about the safety and effects of G207 combined with radiation therapy in patients with recurrent or progressive high-grade glioma (HGG).

Detailed description

Primary Objective: To assess the efficacy of G207 administered intratumorally followed by 5 Gy radiation within 24hours in patients with recurrent or progressive high-grade glioma (HGG) as measured by postprogression overall survival (pp-OS), focused on patients with one progression following their priorsurgery and radiotherapy, compared to matched historical controls. Secondary Objectives: To describe the pp-OS survival in patients treated with G207 + 5 Gy with more than one progression following their prior surgery and radiotherapy To establish safety and characterize toxicity of G207 + 5 Gy radiation To survey for virologic shedding following G207 To evaluate immunologic response(s) to G207 To assess radiographic changes from baseline by RANO 2.0 criteria and by tumor volume, cerebral blood volume, and apparent diffusion coefficient. To describe the efficacy of G207 + 5 Gy radiation as measured by response rate and progressionfree survival (PFS) Exploratory Objectives: To assess performance status score changes over time after treatment with G207 + 5 Gy radiation To evaluate pre- and post-treatment tissue for immune cell populations and checkpoint proteins in patients who are amendable to and meet criteria for resection/biopsy while on study To assess OS in subgroups of patients based on therapies received after G207 + 5 Gy radiation (surgery versus no surgery; reirradiation versus no reirradiation, immunotherapy versus no immunotherapy)

Interventions

DRUGG207

Given by injection

Sponsors

M.D. Anderson Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
3 Years to 21 Years
Healthy volunteers
No

Exclusion criteria

Pregnancy Pregnant women are excluded from this study. Female patients of childbearing potential must have a negative serum or urine pregnancy test. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required. Pregnant women are excluded from this study because G207 is an agent with the potential for teratogenic or abortifacient effects. Lactation Status Lactating females are not eligible unless they have agreed not to breastfeed their infants Because there is an unknown potential risk for adverse events in nursing infants secondary to treatment of the mother with G207, breastfeeding should be discontinued if the mother is treated with G207. Disease-Related

Design outcomes

Primary

MeasureTime frameDescription
Safety and Adverse Events (AEs)Through study completion; an average of 1 yearIncidence of Adverse Events, Graded According to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version (v) 5.0

Countries

United States

Contacts

CONTACTGregory Friedman, MD
gkfriedman@mdanderson.org713-557-4400
PRINCIPAL_INVESTIGATORGregory Friedman, MD

UT MD Anderson

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 30, 2026