Stereotactic Biopsy Split-Course Radiation Therapy in Diffuse Midline Glioma, SPORT-DMG Study

NCT ID: NCT05077735

Last Updated: 2026-01-20

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: PHASE2
• Total Enrollment: 29 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-10-11
• Study Completion Date: 2027-10-15

Brief Summary

This phase II trial studies the clinical outcomes of hypofractionated radiation therapy in patients with diffuse midline gliomas. This study aims to change the way radiation is delivered, from giving 6 weeks of radiation all at once to giving 2 weeks of radiation. This may determine if there is a difference in the outcome of the treatment, and most importantly, the patients' quality of life.

Detailed Description

PRIMARY OBJECTIVE:

I. To determine that 10-month overall survival (OS) rate for the hypofractionated radiation course of 25 Gy in 10 fractions in patients with diffuse midline glioma of the pons isn't inferior to the historical control (survival rate of 50% at 10 months) based on the current standard of care (54 GY in 30 fractions).

SECONDARY OBJECTIVES:

I. To evaluate the quality of life outcomes for patients with diffuse midline gliomas of the pons.

II. To estimate the time to progression after the second hypofractionated radiation course of 25 Gy in 10 fractions in patients with diffuse midline glioma of the pons, calculated from date of diagnosis.

III. To estimate progression free survival intervals for patients after each hypofractionated radiation treatment course.

IV. To evaluate the quality of life outcomes for parents of patients =< 18 years with the Functional Assessment of Cancer Therapy General (FACT-G) Family/Caregiver Questionnaire.

V. To estimate the overall survival for patients with diffuse midline gliomas of the pons treated with planned multi-course hypofractionated radiation courses.

VI. To report toxicities associated with hypofractionated, planned, multi-course radiation treatment for diffuse midline glioma of the pons.

OUTLINE:

Patients undergo hypofractionated radiation therapy (RT) over 10 fractions. Patients who experience progression undergo up to 2 retreatment courses. Patients undergo magnetic resonance imaging (MRI) and positron emission tomography- computed tomography (PET-CT) scan throughout the study.

After completion of study treatment, patients are followed up at 1 month, every 2 months for year 1, every 3 months for year 2, then every 6 months for year 3.

Conditions

Diffuse Midline Glioma, H3 K27M-Mutant

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Treatment (hypofractionated RT)

Patients undergo hypofractionated RT over 10 fractions. Patients who achieve progression undergo up to 2 retreatment courses. Patients undergo MRI and PET-CT scan throughout the study.

Group Type: EXPERIMENTAL

Hypofractionated Radiation Therapy

Intervention Type: RADIATION

Undergo hypofractionated radiation therapy

Questionnaire Administration

Intervention Type: OTHER

Ancillary studies

Magnetic Resonance Imaging

Intervention Type: PROCEDURE

Undergo MRI

Positron Emission Tomography and Computed Tomography Scan

Intervention Type: PROCEDURE

Undergo PET-CT scan

Interventions

Hypofractionated Radiation Therapy

Undergo hypofractionated radiation therapy

Intervention Type: RADIATION

Questionnaire Administration

Ancillary studies

Intervention Type: OTHER

Magnetic Resonance Imaging

Undergo MRI

Intervention Type: PROCEDURE

Positron Emission Tomography and Computed Tomography Scan

Undergo PET-CT scan

Intervention Type: PROCEDURE

Other Intervention Names

Hypofractionated; Hypofractionated Radiotherapy; hypofractionation; Radiation, Hypofractionated; Magnetic Resonance; Magnetic Resonance Imaging (MRI); Magnetic resonance imaging (procedure); Magnetic Resonance Imaging Scan; Medical Imaging; Magnetic Resonance / Nuclear Magnetic Resonance; MR; MRI; MR Imaging; MRI Scan; MRIs; NMR Imaging; NMRI; nuclear magnetic resonance imaging; sMRI; Structural MRI; PET-CT Scan; PET/CT SCAN; Positron Emission Tomography/Computed Tomography

Eligibility Criteria

Inclusion Criteria

• Age >= 1 year(s) old (no maximum age)
• Radiologic appearance of diffuse midline glioma of the pons, including diffuse infiltration of >= 50% of the pons on MRI, with or without extension to the midbrain and/or medulla oblongata with at least 1 of the 3 brainstem symptoms (cranial nerve deficit, long tract sign, or cerebellar sign)

• If all features of this clinicoradiologic criteria are met, then patients can continue on protocol with or without a biopsy
• If all features of this clinicoradiologic criteria are not met, patients must receive a brainstem lesion biopsy to be treated on protocol. If this cannot be completed, patients will be withdrawn from the study
• If biopsy has already been completed at an outside institution, the outside pathology report will be reviewed ahead of trial enrollment. The pathology specimen will then be sent to Mayo Clinic for further review, but will not delay study enrollment
• Able to undergo MRI Brain
• Negative urine pregnancy test completed =< 7 days prior to registration, for women of childbearing potential only
• Primary language of English or Spanish for patients and their caregiver
• Patient or caregiver willing and able to provide written informed consent
• Caregiver able to complete questionnaires by themselves or with assistance
• Willing to return to enrolling institution for follow-up during the active monitoring phase of the study

Exclusion Criteria

• Any patient who has received previous radiation to the brain
• Any patient who has received previous chemotherapy
• Any patient with a diagnosis of neurofibromatosis type 1 or 2 (NF1 or NF2)
• Any of the following:

• Pregnant women
• Nursing women
• Women of childbearing potential who are unwilling to employ adequate contraception
• Co-morbid systemic illnesses or other severe concurrent disease which, in the judgment of the investigator, would make the patient inappropriate for entry into this study or interfere significantly with the proper assessment of safety and toxicity of the prescribed regimens
• 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
• Other active malignancy =< 5 years prior to registration. EXCEPTIONS: Non-melanotic skin cancer, breast cancer, prostate cancer, well-differentiated thyroid cancer, carcinoma-in-situ of the cervix

• NOTE: If there is a history or prior malignancy, they must not be receiving other specific treatment for their cancer
• Patients > 16 years with an Eastern Cooperative Oncology Group (ECOG) score >= 4 and patients =< 16 years with a Lansky play scale =< 20

• Minimum Eligible Age: 1 Year
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Mayo Clinic

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Roman O. Kowalchuk, MD

Role: PRINCIPAL_INVESTIGATOR

Mayo Clinic in Rochester

Locations

Mayo Clinic Hospital in Arizona

Phoenix, Arizona, United States

Site Status: RECRUITING

Mayo Clinic in Rochester

Rochester, Minnesota, United States

Site Status: RECRUITING

Countries

United States

Central Contacts

Clinical Trials Referral Office

Role: CONTACT

mayocliniccancerstudies@mayo.edu

855-776-0015

Facility Contacts

Clinical Trials Referral Office

Role: primary

mayocliniccancerstudies@mayo.edu

855-776-0015

Clinical Trials Referral Office

Role: primary

mayocliniccancerstudies@mayo.edu

855-776-0015

Related Links

https://www.mayo.edu/research/clinical-trials

Mayo Clinic Clinical Trials

Other Identifiers

NCI-2021-10010

Identifier Type: REGISTRY

Identifier Source: secondary_id

21-000069

Identifier Type: OTHER

Identifier Source: secondary_id

GMROR2162

Identifier Type: -

Identifier Source: org_study_id