A Study of RNA-lipid Particle (RNA-LP) Vaccines for Newly Diagnosed Pediatric High-Grade Gliomas (pHGG) and Adult Glioblastoma (GBM)

NCT ID: NCT04573140

Last Updated: 2026-01-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1

Total Enrollment

28 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-12-13

Study Completion Date

2029-07-01

Brief Summary

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The primary objective will be to demonstrate the manufacturing feasibility and safety, and to determine the maximum tolerated dose (MTD) of RNA-LP vaccines in (Stratum 1) adult patients with newly diagnosed GBM (MGMT low level or unmethylated in adults only) and (Stratum 2) in pediatric patients with newly diagnosed HGG (pHGG). Funding Source - FDA OOPD

Detailed Description

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This is a first in human Phase I study of RNA-LP vaccines for newly diagnosed adult MGMT unmethylated (low level or undetected) glioblastoma (GBM) and pediatric patients with newly diagnosed HGG (pHGG). The phase I portion of the study will involve a dose-escalation study to identify the maximally tolerated dose (MTD). The GBM portion of the study is single site (UF) and the pediatric portion will be multisite.

This clinical trial will consist of three parts: Surgery, Radiation, and Immunotherapy. Surgery and chemoradiation will be standard of care for patients with GBM. Potentially eligible participants will be enrolled on a screening consent for the sterile collection of tumor material in a manner suitable for RNA extraction, amplification, and loading of lipid particles (LPs). Pediatric participants will have tumor material sent to the University of Florida (UF) from qualified PNOC sites. Adult GBM participants must have surgery for collection of tumor material at the University of Florida. Following surgical resection with confirmatory pathologic diagnosis, patients will be enrolled in the trial after informed consent has been obtained.

The RNA-LP vaccination will begin within 4 weeks following radiation and after review of post-radiation MRI (for baseline). After radiation patients will receive three RNA-LP vaccines every 2 weeks before beginning 12 cycles of adjuvant monthly RNA- LP vaccines for a total of 15 vaccines.

Participants may receive RNA-LP vaccines for up to 14 months.

Participants will be followed until death due to any cause. MRI and clinical evaluation for assessment of disease progression will be conducted every 3 months for the first-year post-immunotherapy and then every 6-12 months over the next 2 years.

Conditions

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Adult Glioblastoma High Grade Glioma WHO Grade III or IV Malignant Glioma

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Adult GBM (Stratum 1)

Group Type EXPERIMENTAL

Autologous total tumor mRNA and pp65 full length (fl) lysosomal associated membrane protein (LAMP) mRNA loaded DOTAP liposome vaccine administered intravenously (RNA loaded lipid particles, RNA-LPs)

Intervention Type BIOLOGICAL

RNA-LP vaccines will be administered intravenous. Three RNA-LP vaccines will be administered every 2 weeks followed by 12 cycles of adjuvant monthly RNA-LP vaccines for a total of 15 vaccines.

Pediatric HGG (Stratum 2)

Group Type EXPERIMENTAL

Autologous total tumor mRNA and pp65 full length (fl) lysosomal associated membrane protein (LAMP) mRNA loaded DOTAP liposome vaccine administered intravenously (RNA loaded lipid particles, RNA-LPs)

Intervention Type BIOLOGICAL

RNA-LP vaccines will be administered intravenous. Three RNA-LP vaccines will be administered every 2 weeks followed by 12 cycles of adjuvant monthly RNA-LP vaccines for a total of 15 vaccines.

Interventions

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Autologous total tumor mRNA and pp65 full length (fl) lysosomal associated membrane protein (LAMP) mRNA loaded DOTAP liposome vaccine administered intravenously (RNA loaded lipid particles, RNA-LPs)

RNA-LP vaccines will be administered intravenous. Three RNA-LP vaccines will be administered every 2 weeks followed by 12 cycles of adjuvant monthly RNA-LP vaccines for a total of 15 vaccines.

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* The tumor must have a supratentorial component.
* Patient must have been enrolled on a screening consent and have had sterile collection of tumor material in a manner suitable for RNA extraction, amplification, and loading of lipid particles (LPs).
* Residual post-surgical disease burden ≤ 3 cm as defined by longest perpendicular diameter of tumor on post-operative MRI.
* Patients must have recovered from the effects of surgery, postoperative infection, and other complications.
* A diagnostic contrast-enhanced MRI of the brain must be performed preoperatively and postoperatively. Pre-op MRI must be performed within 28 days prior to study enrollment. Post-op MRI must be completed within 7 days after surgery. Preoperative and postoperative scans must be the same type.
* Performance Score: (KPS) ≥ 60. Participants who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score.
* Bone Marrow:

* ANC (Absolute neutrophil count) ≥ 1,000µl (unsupported)
* Platelets ≥ 150/µl (unsupported for at least 7 days)
* Hemoglobin \> 8 g/dL
* Renal:

* BUN ≤ 25 mg/dl
* Creatinine ≤ 1.7 mg/dl
* Hepatic

* Bilirubin ≤ 2.0 mg/dl
* ALT ≤ 5 times institutional upper limits of normal for age
* AST ≤ 5 times institutional upper limits of normal for age
* Willing to take an antiepileptic medication such as levetiracetam for the duration of RNA-LP vaccinations
* Signed informed consent. If the patient's mental status precludes his/her giving informed consent, written informed consent may be given by the legally authorized representative.
* For women of childbearing potential (WOCBP), negative serum/urine pregnancy test at enrollment (test will be repeated within 72 hours prior to starting TMZ in Stratum 1 patients).
* WOCBP must be willing to use acceptable contraceptive methods to avoid pregnancy throughout the study and for at least 24 weeks after the last dose of study drug. Refer to Appendix F for definition of WOCBP and guidance on acceptable contraceptive methods.
* Males with female partners of childbearing potential must agree to use physician-approved contraceptive methods (e.g., abstinence, condoms, vasectomy) throughout the study and should avoid conceiving children for 24 weeks following the last dose of study drug.
* Participants with post-surgical neurological deficits should have deficits that are stable for a minimum of 1 week prior to enrollment.

Stratum 2 (Pediatric HGG)

* Age \> 3 and ≤ 25 years.
* Histologically confirmed WHO Grade III or IV malignant glioma
* Patient must have been enrolled on a screening consent and have had sterile collection of tumor material in a manner suitable for RNA extraction, amplification, and loading of lipid particles (LPs).
* Residual post-surgical disease burden ≤ 3 cm as defined by longest diameter of tumor on post-operative MRI.
* Patients must have recovered from the effects of surgery, postoperative infection, and other complications.
* A diagnostic contrast-enhanced MRI of the brain must be performed preoperatively and postoperatively. Pre-op MRI must be performed within 28 days prior to study enrollment. Post-op MRI must be completed within 7 days after surgery. Preoperative and postoperative scans must be the same type.
* Performance Score: Karnofsky ≥ 60 for participants \> 16 years of age and Lansky ≥ 60 for participants \< 16 years of age assessed within 2 weeks prior to enrollment. Participants who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score.
* Bone Marrow:

1. ANC (Absolute neutrophil count) ≥ 1,000/µl (unsupported)
2. Platelets ≥ 100/µl (unsupported for at least 7 days)
3. Hemoglobin \> 8 g/dL (may be supported)
* Renal: Creatinine clearance or radioisotope GFR ≥ 70mL/min/1.73 m2 or acceptable serum creatinine based on age/gender
* Hepatic:

1. Bilirubin ≤ 3 times upper limit of institutional normal for age.
2. SGPT (ALT) ≤ 5 times upper limit of institutional normal for age.
3. SGOT (AST) ≤ 5 times upper limit of institutional normal for age.
* Participants who are receiving systemically-administered steroids must be on a stable or decreasing dose for \>1 week prior to enrollment. The patient steroid dose should be no more than a dexamethasone-equivalent of 2.8 mg/m2/day. Corticosteroid physiologic replacement therapy for management of pituitary/adrenal axis insufficiency and/or topical administration (e.g. inhaled or dermatologic) is allowed.
* Willing to take an antiepileptic medication such as levetiracetam for the duration of RNA-LP vaccinations.
* A legal parent/guardian or patient must be able to understand and be willing to sign a written informed consent and assent document, as appropriate.
* For women of childbearing potential (WOCBP), negative serum/urine pregnancy test at enrollment
* WOCBP must be willing to use acceptable contraceptive methods to avoid pregnancy throughout the study and for at least 24 weeks after the last dose of study drug. Refer to Appendix F for definition of WOCBP and guidance on acceptable contraceptive methods.
* Males of child-fathering potential must agree to use physician-approved contraceptive methods (e.g., abstinence, condoms, vasectomy) throughout the study and should avoid conceiving children for 24 weeks following the last dose of study drug.
* Participants with post-surgical neurological deficits should have deficits that are stable for a minimum of 1 week prior to enrollment.
* Patients must be enrolled on PNOC COMP prior to enrollment on PNOC020 if PNOC COMP is open to accrual at the enrolling institution.

Exclusion Criteria

Stratum 1 (Adult GBM)

* Prior invasive malignancy (except for non-melanomatous skin cancer) unless disease free for ≥ 3 years. (For example, carcinoma in situ of the breast, oral cavity, and cervix are all permissible.)
* MGMT Methylated tumors
* Gliomatosis Cerebri
* Metastases detected below the tentorium or beyond the cranial vault and leptomeningeal involvement.
* Recurrent or multifocal malignant gliomas.
* Metastatic or leptomeningeal disease
* Residual post-surgical disease burden \> 3 cm as defined by longest perpendicular diameter on MRI.
* Known HIV, Hepatitis B, or Hepatitis C seropositive.
* Known active infection or immunosuppressive disease.
* Participants who require corticosteroids above physiologic doses or not weaned to physiologic dosing within 1 week of scheduled vaccination.
* Prior chemotherapy or radiosensitizers (including Gliadel wafers) for cancers of the head and neck region, other than TMZ prescribed during radiation for GBM (prior chemotherapy for a different cancer is allowable).
* Prior radiotherapy to the head or neck, resulting in overlap of radiation fields. Radiosurgery is not permitted.
* Severe, active co-morbidity, defined as follows:

* Unstable angina and/or congestive heart failure requiring hospitalization.
* Unstable cardiac arrhythmias, abnormalities, or transmural myocardial infarction within the last 6 months.
* Acute bacterial or fungal infection requiring intravenous antibiotics at initiation of XRT/TMZ.
* Chronic Obstructive Pulmonary Disease exacerbation or other respiratory illness requiring hospitalization or precluding study therapy at initiation of XRT/TMZ.
* Hepatic insufficiency resulting in clinical jaundice and/or coagulation defects.
* Acquired Immune Deficiency Syndrome (AIDS) based upon current CDC definition. The need to exclude patients with AIDS from this protocol is necessary because the treatments involved in this protocol may be significantly immunosuppressive.
* Patients with autoimmune disease requiring medical management with immunosuppressants.
* Major medical illnesses or psychiatric impairments that, in the investigator's opinion, will prevent administration or completion of protocol therapy.
* Active connective tissue disorders such as lupus or scleroderma that, in the investigator's opinion, place the patient at high risk for radiation toxicity.
* Pregnancy or women of childbearing potential and men who are sexually active and who are unwilling or unable to use an acceptable method of contraception for the entire study period; this exclusion is necessary because the treatment involved in this study may be significantly teratogenic.
* Women of childbearing potential must not be pregnant or breast-feeding.
* Prior history of brachial neuritis or Guillain-Barré syndrome.
* Participants who are receiving any other investigational agents or who have been treated on any other therapeutic clinical protocols within 30 days prior to study entry.
* Participants who are unwilling or unable to receive treatment and undergo follow-up evaluations

Stratum 2 (Pediatric HGG)

* Diffuse intrinsic pontine glioma, brainstem diffuse midline glioma, or BRAFV600E+
* Gliomatosis
* Known HIV, Hepatitis B, or Hepatitis C seropositive.
* Uncontrolled seizure disorder
* History of myocarditis
* Receipt of any live vaccine within 30 days prior to enrollment
* Known active infection or immunosuppressive disease.
* Participants with significant renal, cardiac (congestive cardiac failure, myocardial infarction, myocarditis), pulmonary, hepatic or other organ dysfunction.
* Severe or unstable concurrent medical conditions.
* Women must not be pregnant or breast-feeding.
* Participants who are receiving any other investigational agents or who have been treated on any other therapeutic clinical protocols within 30 days prior to study entry.
* Participants who are unwilling or unable to receive treatment and undergo follow-up evaluations.
Minimum Eligible Age

4 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Pediatric Neuro-Oncology Consortium

OTHER

Sponsor Role collaborator

University of California, San Francisco

OTHER

Sponsor Role collaborator

CureSearch

UNKNOWN

Sponsor Role collaborator

Team Jack Foundation

UNKNOWN

Sponsor Role collaborator

Florida Department of Health

OTHER_GOV

Sponsor Role collaborator

Food and Drug Administration (FDA)

FED

Sponsor Role collaborator

University of Florida

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Elias Sayour, MD, PhD

Role: STUDY_CHAIR

University of Florida

Locations

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UF Health

Gainesville, Florida, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Marcia Hodik

Role: CONTACT

352-273-5519

Facility Contacts

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Marcia Hodik, RN

Role: primary

352-273-6971

References

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Carrera-Justiz S, Aghaee M, Qdaisat S, Weidert F, Garcia GA, Fagman L, Zhang D, Stover B, Moor RSF, Xie C, Goldenberg E, von Roemeling C, Doonan B, Chardon-Robles J, Elliott L, Sawyer WG, Deleyrolle LP, Sahay B, Foster TP, Seligson ND, Rahman M, Ghiaseddin A, Castillo P, Lee JH, Silver NL, Doty A, Ligon JA, Milner RJ, Mitchell D, Mendez-Gomez H, Moore H, Sayour EJ. Systemic mRNA vaccines elicit rapid immune activation in canine brain tumors. J Immunother Cancer. 2025 Nov 11;13(11):e011817. doi: 10.1136/jitc-2025-011817.

Reference Type DERIVED
PMID: 41218853 (View on PubMed)

Villanueva MT. RNA delivery heats up cold tumours. Nat Rev Drug Discov. 2024 Jul;23(7):497. doi: 10.1038/d41573-024-00098-0. No abstract available.

Reference Type DERIVED
PMID: 38858569 (View on PubMed)

Melnick K, Dastmalchi F, Mitchell D, Rahman M, Sayour EJ. Contemporary RNA Therapeutics for Glioblastoma. Neuromolecular Med. 2022 Mar;24(1):8-12. doi: 10.1007/s12017-021-08669-9. Epub 2021 Jun 8.

Reference Type DERIVED
PMID: 34101090 (View on PubMed)

Other Identifiers

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OCR32702

Identifier Type: OTHER

Identifier Source: secondary_id

R01FD007268-01A1

Identifier Type: FDA

Identifier Source: secondary_id

View Link

PNOC020

Identifier Type: OTHER

Identifier Source: secondary_id

IRB202001710

Identifier Type: -

Identifier Source: org_study_id

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