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ETAPA I: Peptide-based Tumor Associated Antigen Vaccine in GBM

ETAPA I: Evaluation of Tumor Associated P30-Peptide Antigen I; A Pilot Trial of Peptide-based Tumor Associated Antigen Vaccines in Newly Diagnosed, Unmethylated, and Untreated Glioblastoma (GBM)

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05283109
Acronym
ETAPA I
Enrollment
24
Registered
2022-03-16
Start date
2023-08-30
Completion date
2028-02-28
Last updated
2026-04-30

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

Conditions

Glioma, Malignant

Keywords

ETAPA, Pro00102818, Khasraw, Glioblastoma, Glioma, Duke, Vaccine

Brief summary

This is a phase 1b study of P30-linked EphA2, CMV pp65, and survivin vaccination (collectively called the P30-EPS vaccine) in HLA-A\*0201 positive patients with a newly diagnosed, unmethylated, and untreated World Health Organization (WHO) grade IV malignant glioma.

Detailed description

This is a phase 1b study of P30-linked EphA2, CMV pp65, and survivin vaccination (collectively called the P30-EPS vaccine) in HLA-A\*0201 positive patients with a newly diagnosed, unmethylated, and untreated World Health Organization (WHO) grade IV malignant glioma at the Preston Robert Tisch Brain Tumor Center (PRTBTC) at Duke, is planned to address the following primary objective: Evaluate the safety profile of a cancer vaccine comprised of P30-linked EphA2, CMV pp65, and survivin peptides. A maximum of 36 patients with a newly diagnosed, previously untreated WHO grade IV malignant glioma that is MGMT promoter unmethylated will be treated in this study after undergoing standard of care surgical resection followed by 6 weeks of radiation therapy (XRT) with concomitant temozolomide (TMZ) and providing informed consent. Patients will receive seven P30 linked-EphA2, -CMV pp65, and -survivin (P30-EPS) peptide vaccines over two phases. The first 5 will be given during the Priming Phase (day 1 through day 22). The final 2 will be given during the Booster Phase (day 84 \[± 2 days\] and day 140 \[± 2 days\]). During the Booster Phase on Day 84, patients will also be given 20ug/kg Hiltonol® injections to administer at home every 2 weeks until they return on Day 140. Blood will be drawn throughout the study to investigate the immune response to P30-EPS vaccination. The study will enroll two patient strata: patients who are CMV seronegative and patients who are CMV seropositive. Within each stratum, cohorts of 3 patients will initially be accrued to the study to assess the toxicity associated with the vaccine. The starting dose of P30-EPS is 300 μg/peptide/dose, and the dose will be escalated to 400 μg/peptide/dose. In the event of unacceptable dose-limiting toxicity, the dose will be de-escalated to 200 μg/peptide/dose (dose level minus one). Acute toxicity monitoring will focus on dose-limiting toxicities, as defined in Section 9.1.2 of the protocol, occurring between vaccine 1 and 30 days after vaccine 5. The most common side effects of peptide vaccines are redness or swelling at the injection site, local changes to the texture of your skin (hardening) at the injection site, itching, allergic reactions, and a potentially serious side effect called cytokine release syndrome. The most common side effects of Hiltonol® are reactions at the injection site and flu-like symptoms.

Interventions

BIOLOGICALTumor Associated Antigen Peptide Vaccine P30-EPS Vaccine

Vaccine that includes 3 peptides (EphA2 linked to P30 peptide, pp65 linked to P30 peptide, and Survivin linked to P30 peptide)

Hiltonol® is made up of synthetic (manmade) RNA (ribonucleic acid) and is used as an adjuvant to the vaccine, meaning it is used with the vaccine to stimulate or enhance the activation of your immune system.

Sponsors

Mustafa Khasraw, MBChB, MD, FRCP, FRACP
Lead SponsorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Age ≥ 18 years of age 2. Newly diagnosed Isocitrate dehydrogenase (IDH) wild type (CARIS result), MGMT promoter unmethylated (CARIS result) WHO grade IV glioma (e.g., glioblastoma (GBM) or high grade glioma with molecular features of GBM) with definitive resection prior to enrollment, and residual radiographic contrast enhancement on immediate post-surgical computed tomography (CT), or magnetic resonance imaging (MRI). 3. CMV positive or negative by IgG testing. 4. Karnofsky Performance Status (KPS) of \> 70%. 5. Hemoglobin ≥ 9.0 g/dl, absolute neutrophil count (ANC) ≥ 1,000 cells/µl, platelets ≥ 100,000 cells/µl. 6. Serum creatinine ≤ 3 x the upper limit of normal (ULN), serum glutamic oxaloacetic transaminase (SGOT)≤ 3 times ULN 7. Bilirubin ≤ 1.5 times ULN (Exception: Patient has known Gilbert's Syndrome or patient has suspected Gilbert's Syndrome, for which additional lab testing of direct and/or indirect bilirubin supports this diagnosis. In these instances, a total bilirubin of ≤ 3.0 x ULN is acceptable.) 8. Signed informed consent approved by the Institutional Review Board. 9. Female patients must not be pregnant or breast-feeding. Female patients of childbearing potential (defined as \< 2 years after last menstruation or not surgically sterile) must use a highly effective contraceptive method (allowed methods of birth control, \[i.e. with a failure rate of \< 1% per year\] are implants, injectables, combined oral contraceptives, intra-uterine device \[IUD; only hormonal\], sexual abstinence or vasectomized partner) during the trial and for a period of \> 6 months following the last administration of trial drug(s). Female patients with an intact uterus (unless amenorrhea for the last 24 months) must have a negative serum pregnancy test within 48 hours prior to first vaccination. 10. Fertile male patients must agree to use a highly effective contraceptive method (allowed methods of birth control \[i.e. with a failure rate of \< 1% per year\] include a female partner using implants, injectables, combined oral contraceptives, IUDs \[only hormonal\], sexual abstinence or prior vasectomy) during the trial and for a period of \> 6 months following the last administration of trial drug(s).

Exclusion criteria

1. Patients with known potentially anaphylactic allergic reactions to gadolinium-diethylenetriaminepentaacetic acid (DTPA), or any component of the tetanus-diphtheria vaccine. 2. Patients with evidence of tumor in the brainstem, cerebellum, or spinal cord, radiological evidence of multifocal disease, or leptomeningeal disease. 3. Areas of high-grade glioma outside the original radiation field on the post XRT/TMZ MRI. 4. Patients who cannot undergo MRI. 5. Severe, active comorbidity, including any of the following: * Unstable angina and/or congestive heart failure requiring hospitalization; * Transmural myocardial infarction within the last 6 months; * Acute bacterial or fungal infection requiring intravenous antibiotics at the time of first -vaccination; * Active infection requiring intravenous treatment or having an unexplained febrile illness (Tmax \> 99.5°F/37.5°C) * Chronic obstructive pulmonary disease exacerbation or other respiratory illness requiring hospitalization or precluding study therapy; * Known hepatic insufficiency resulting in clinical jaundice and/or coagulation defects; * Known immunosuppressive disease or Human Immunodeficiency Virus (HIV) and -Hepatitis C positive status; * 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 opinion of the treating physician, may put the patient at high risk for radiation toxicity. 6. Co-medication that may interfere with study results (e.g., immuno-suppressive agents other than corticosteroids). 7. Prior, unrelated malignancy requiring current active treatment with the exception of cervical carcinoma in situ and adequately treated basal cell or squamous cell carcinoma of the skin. (Treatment with tamoxifen or aromatase inhibitors or other hormonal therapy that may be indicated in prevention of prior cancer disease recurrence, are not considered current active treatment.) 8. Patients are not permitted to have had any other conventional therapeutic intervention other than surgery, steroids, and standard of care chemoradiation prior to enrollment. 9. Patients who received previous inguinal lymph node dissection or had radiosurgery, brachytherapy, or radiolabeled monoclonal antibodies to treat a CNS tumor will be excluded. 10. Current, recent (within 4 weeks of the administration of this study agent), or planned participation in an experimental drug study. 11. Known history of autoimmune disease (with the exceptions of medically-controlled hypothyroidism and Diabetes Mellitus).

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Experienced Dose-limiting Toxicity (DLT)Approximately 2 months after initiation of P30-EPS study vaccineA dose-limiting toxicity (DLT) is as an unacceptable toxicity, based on CTCAE v5.0, that occurs during the DLT observation period that extends between date of vaccine #1 (Day 1) and 30 days after vaccine #5 (Day 22). Any ≥ Grade 3 AEs were to be considered as unacceptable toxicities if they were possibly, probably, or definitely attributable to the protocol treatment regimen, and if they occurred within 30 days of vaccination. Specifically, any ≥ Grade 3 organ toxicity (cardiac, renal, hepatic), including CRS-related toxicities such as hypotension and tachycardia, of any duration was to be considered an unacceptable toxicity. A Grade 3 neurologic toxicity was only to be declared an unacceptable toxicity if not reversible within 48 hours. Grade 3 flu-like symptoms, fever, and chills/rigors were not considered unacceptable if the duration was less than 72 hours.

Secondary

MeasureTime frameDescription
Change in Mean Fold Increase in pp56-specific T Cells; Time Frame: Day 1, 22, 843 monthsStratified between CMV seropositive and seronegative patients
Change in Mean Fold Increase in EphA2- or Survivin- Specific T Cells; Time Frame: Days 1, 22, 843 MonthsAmongst all patients
Median Survival36 monthsAmongst all patients
Median Progression-free Survival36 monthsAmongst all patients

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORMustafa Khasraw, MBChB, MD, FRCP, FRACP

Duke University

Participant flow

Pre-assignment details

3 enrollees decided not to participate in the study, 1 did not have Caris results in time to participate, and 2 were unable to participate due to no CMV negative slots being available at the time.

Baseline characteristics

Characteristic
Age, Continuous56.5 years
STANDARD_DEVIATION 20.6
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
16 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
16 Participants
Region of Enrollment
United States
18 Participants
Sex: Female, Male
Female
5 Participants
Sex: Female, Male
Male
4 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
5 / 66 / 12
other
Total, other adverse events
6 / 612 / 12
serious
Total, serious adverse events
0 / 61 / 12

Outcome results

None listed

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