A Study of the Drug Selinexor With Radiation Therapy in Patients With Newly-Diagnosed Diffuse Intrinsic Pontine (DIPG) Glioma and High-Grade Glioma (HGG)

Recruiting now · Phase 1/Phase 2

Conditions studied: Malignant Glioma

In brief

This phase I/II trial tests the safety, side effects, and best dose of selinexor given in combination with standard radiation therapy in treating children and young adults with newly diagnosed diffuse intrinsic pontine glioma (DIPG) or high-grade glioma (HGG) with a genetic change called H3 K27M mutation. It also tests whether combination of selinexor and standard radiation therapy works to shrink tumors in this patient population. Glioma is a type of cancer that occurs in the brain or spine. Glioma is considered high risk (or high-grade) when it is growing and spreading quickly. The term, risk, refers to the chance of the cancer coming back after treatment. DIPG is a subtype of HGG that grows in the pons (a part of the brainstem that controls functions like breathing, swallowing, speaking, and eye movements). This trial has two parts. The only difference in treatment between the two parts is that some subjects treated in Part 1 may receive a different dose of selinexor than the subjects treated in Part 2. In Part 1 (also called the Dose-Finding Phase), investigators want to determine the dose of selinexor that can be given without causing side effects that are too severe. This dose is called the maximum tolerated dose (MTD). In Part 2 (also called the Efficacy Phase), investigators want to find out how effective the MTD of selinexor is against HGG or DIPG. Selinexor blocks a protein called CRM1, which may help keep cancer cells from growing and may kill them. It is a type of small molecule inhibitor called selective inhibitors of nuclear export (SINE). Radiation therapy uses high energy to kill tumor cells and shrink tumors. The combination of selinexor and radiation therapy may be effective in treating patients with newly-diagnosed DIPG and H3 K27M-Mutant HGG.

Key facts

Study ID

NCT05099003

Run by

National Cancer Institute (NCI)

People needed

132

Starts

2022-05-31

Expected to finish

2027-06-30

Last updated by the study team

2026-08-06

Who can join

Age: 1 and older, up to 21. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• PRE ENROLLMENT: Patients must be =< 25 years of age at the time of enrollment on APEC14B1 part A central nervous system (CNS)/high grade glioma (HGG) pre-enrollment eligibility screening
• Please note:
• This required age range applies to pre-enrollment eligibility for all HGG patients. Individual treatment protocols may have different age criteria.
• Non-DIPG patients with tumors that do not harbor an H3K27M-mutation and are >= 18 years of age will not be eligible to enroll on ACNS1821 (Step 1).
• PRE ENROLLMENT: Patient is suspected of having localized, newly diagnosed HGG, excluding metastatic disease, OR patient has an institutional diagnosis of DIPG
• Please note: there are specific radiographic criteria for DIPG patient enrollment on ACNS1821 (Step 1)
• As of February 14, 2025, stratum DIPG and stratum DMG have closed to accrual, and no patients will be enrolled on these strata after Amendment #4.
• PRE ENROLLMENT:
• For patients with non-pontine tumors: Patients and/or their parents or legal guardians must have signed informed consent for eligibility screening on APEC14B1 Part A.
• For patients with DIPG: Patients and/or their parents or legal guardians must have signed informed consent for ACNS1821.
• Note: As of February 14, 2025, stratum DIPG and stratum DMG have closed to accrual, and no patients will be enrolled on these strata after Amendment #4.
• PRE ENROLLMENT:
• For patients with non-pontine tumors only, the specimens obtained at the time of diagnostic biopsy or surgery must be submitted through APEC14B1 ASAP, preferably within 5 calendar days of definitive surgery
• STEP 1: Patients must be >= 12 months and =< 21 years of age at the time of enrollment
• STEP 1: Patients must have newly-diagnosed DIPG or HGG (including DMG).
• STEP 1: Stratum DIPG (Closed with Amendment #4)
• As of February 14, 2025, stratum DIPG and stratum DMG have closed to accrual, and no patients will be enrolled on these strata after Amendment #4.
• Patients with newly-diagnosed typical DIPG, defined as tumors with a pontine epicenter and diffuse involvement of at least 2/3 of the pons on at least 1 axial T2 weighted image, are eligible. No histologic confirmation is required.
• Patients with pontine tumors that do not meet radiographic criteria for typical DIPG (e.g., focal tumors or those involving less than 2/3 of the pontine cross-sectional area with or without extrapontine extension) are eligible if the tumors are biopsied and proven to be high-grade gliomas (such as anaplastic astrocytoma, glioblastoma, high-grade glioma not otherwise specified [NOS], and/or H3 K27M-mutant) by institutional diagnosis.
• STEP 1: Stratum DMG (with H3 K27M mutation) (Closed with Amendment #4)
• As of February 14, 2025, stratum DIPG and stratum DMG have closed to accrual, and no patients will be enrolled on these strata after Amendment #4.
• Patients must have newly-diagnosed non-pontine H3 K27M-mutant HGG without BRAF V600 or IDH1 mutations as confirmed by Rapid Central Pathology and Molecular Screening Reviews performed on APEC14B1
• Note: Patients need not have either measurable or evaluable disease, i.e., DMG patients may have complete resection of their tumor prior to enrollment. Primary spinal tumors are eligible for enrollment. For rare H3 K27M-mutant HGG in non-midline structures (e.g., cerebral hemispheres), these patients will be considered part of Stratum DMG.
• STEP 1: Stratum HGG (without H3 K27M mutation)
• Patients must have newly-diagnosed non-pontine H3 K27M-wild type HGG without BRAF V600 or IDH1 mutations as confirmed by Rapid Central Pathology and Molecular Screening Reviews performed on APEC14B1

You may not qualify if…

• STEP 1: Patients must not have received any prior therapy for their central nervous system (CNS) malignancy except for surgery and steroid medications.
• STEP 1: Patients who are currently receiving another investigational drug are not eligible.
• STEP 1: Patients who are currently receiving other anti-cancer agents are not eligible.
• STEP 1: Patients >=18 years of age who have H3 K27M-wild type HGG.
• STEP 1: Patients who have an uncontrolled infection.
• STEP 1: Patients who have received a prior solid organ transplantation.
• STEP 1: Patients with grade > 1 extrapyramidal movement disorder.
• STEP 1: Patients with known macular degeneration, uncontrolled glaucoma, or cataracts.
• STEP 1: Patients with metastatic disease are not eligible; MRI of spine with and without contrast must be performed if metastatic disease is suspected by the treating physician.
• STEP 1: Patients with gliomatosis cerebri type 1 or 2 are not eligible, with the exception of H3 K27M-mutant bithalamic tumors.
• STEP 1: Patients who are not able to receive protocol specified radiation therapy.
• STEP 1:
• Female patients who are pregnant are ineligible since there is yet no available information regarding human fetal or teratogenic toxicities.
• Lactating females are not eligible unless they have agreed not to breastfeed their infants. It is not known whether selinexor is excreted in human milk.
• Female patients of childbearing potential are not eligible unless a negative pregnancy test result has been obtained.
• Sexually active patients of reproductive potential are not eligible unless they have agreed to use two effective methods of birth control (including a medically accepted barrier method of contraception, e.g., male or female condom) for the duration of their study participation and for 90 days after the last dose of selinexor. Abstinence is an acceptable method of birth control.

Where it is running

• Children's Hospital of Alabama — Birmingham, Alabama, United States (enrolling)
• Phoenix Childrens Hospital — Phoenix, Arizona, United States (enrolling)
• Arkansas Children's Hospital — Little Rock, Arkansas, United States (enrolling)
• Banner Children's at Desert — Mesa, Arizona, United States (enrolling)
• Miller Children's and Women's Hospital Long Beach — Long Beach, California, United States (enrolling)
• Children's Hospital Los Angeles — Los Angeles, California, United States (enrolling)
• Cedars-Sinai Medical Center — Los Angeles, California, United States (enrolling)
• UCSF Benioff Children's Hospital Oakland — Oakland, California, United States (enrolling)
• Kaiser Permanente-Oakland — Oakland, California, United States (enrolling)
• Loma Linda University Medical Center — Loma Linda, California, United States (enrolling)
• Lucile Packard Children's Hospital Stanford University — Palo Alto, California, United States (enrolling)
• Rady Children's Hospital - San Diego — San Diego, California, United States (enrolling)
• UCSF Medical Center-Mission Bay — San Francisco, California, United States (enrolling)
• Children's Hospital Colorado — Aurora, Colorado, United States (enrolling)
• Connecticut Children's Medical Center — Hartford, Connecticut, United States (enrolling)
• Yale University — New Haven, Connecticut, United States (enrolling)
• Alfred I duPont Hospital for Children — Wilmington, Delaware, United States (enrolling)
• Children's National Medical Center — Washington D.C., District of Columbia, United States (enrolling)
• Golisano Children's Hospital of Southwest Florida — Fort Myers, Florida, United States (enrolling)
• Nemours Children's Clinic-Jacksonville — Jacksonville, Florida, United States (enrolling)
• University of Miami Miller School of Medicine-Sylvester Cancer Center — Miami, Florida, United States (enrolling)
• Children's Hospital of Orange County — Orange, California, United States (enrolling)
• Arnold Palmer Hospital for Children — Orlando, Florida, United States (enrolling)
• Nemours Children's Hospital — Orlando, Florida, United States (enrolling)
• Johns Hopkins All Children's Hospital — St. Petersburg, Florida, United States (enrolling)

Full record on ClinicalTrials.gov

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