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Hypofractionated Proton Therapy for Benign Intracranial Brain Tumors, the HiPPI Study

HiPPI: A Phase 2 Trial of Hypofractionated Pencil Beam Scanning Proton Therapy for Benign Intracranial Tumors

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04278118
Acronym
HiPPI
Enrollment
70
Registered
2020-02-20
Start date
2020-02-18
Completion date
2031-12-01
Last updated
2026-02-17

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

Conditions

Grade I Meningioma, Grade II Meningioma, Grade III Meningioma, Intracranial Neoplasm, Nerve Sheath Neoplasm, Pituitary Gland Adenoma, Schwannoma

Brief summary

This phase II trial studies how well hypofractionated proton or photon radiation therapy works in treating patients with brain tumors. Hypofractionated radiation therapy delivers higher doses of radiation therapy over a shorter period of time and may kill more tumor cells. A shorter duration of radiation treatment may avoid some of the delayed side effects of radiation while providing a more convenient treatment and reducing costs.

Detailed description

PRIMARY OBJECTIVE: I. To report 3 year local tumor control of moderately hypofractionated proton or photon therapy for benign intracranial tumors. SECONDARY OBJECTIVES: I. To demonstrate feasibility of moderate hypofractionation pencil beam scanning proton therapy for intracranial tumors. II. To report physician reported acute and late toxicity of moderate hypofractionation pencil beam scanning proton therapy for intracranial tumors according to Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. III. To report neurocognitive effects, health related quality of life, and patient reported toxicity for moderate hypofractionation pencil beam scanning proton therapy for intracranial tumors. OUTLINE: Patients are assigned to 1 of 2 cohorts. COHORT I: Patients with benign and radiographically diagnosed intracranial tumors undergo hypofractionated proton or photon radiation therapy daily, Monday-Friday over 17 fractions for 3.5-4 weeks in the absence of disease progression or unacceptable toxicity. COHORT II: Patients with pathologically confirmed World Health Organization (WHO) grade 2-3 meningiomas undergo hypofractionated proton or photon radiation therapy daily, Monday-Friday over 20 fractions for 3.5-4 weeks in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up periodically.

Interventions

RADIATIONHypofractionated Radiation Therapy

Undergo hypofractionated proton or photon radiation therapy

Undergo hypofractionated proton or photon radiation therapy

RADIATIONProton Beam Radiation Therapy

Undergo hypofractionated proton or photon radiation therapy

OTHERQuality-of-Life Assessment

Ancillary studies

OTHERQuestionnaire Administration

Ancillary studies

Sponsors

Emory University
Lead SponsorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Pathologically or radiographically diagnosed benign intracranial or nerve sheath tumor, including meningiomas, pituitary adenomas, schwannomas. World Health Organization (WHO) grade 2-3 meningiomas are also allowed * Recommended to receive proton or photon fractionated radiation therapy * Signed informed consent

Exclusion criteria

* Pregnant females are excluded. Female of child-bearing potential (FCBP) must have a negative serum or urine pregnancy test prior to starting therapy. FCBP must agree to use adequate contraception (at least one highly effective method and one additional method of birth control at the same time or complete abstinence) prior to study entry, for the duration of study. Should a woman become pregnant or suspect she is pregnant while she is participating in this study, she should inform her treating physician immediately. * A female of childbearing potential (FCBP) is a sexually mature woman who: has not undergone a hysterectomy or bilateral oophorectomy; or has not been naturally postmenopausal for at least 12 consecutive months (if age \>= 55 years); if the female subject is \< 55 years and she has been naturally postmenopausal for \>= 1 year her reproductive status has to be verified by additional laboratory (lab) tests (\< 20 estradiol OR estradiol \< 40 with follicle stimulating hormone \[FSH\] \> 40 in women not on estrogen replacement therapy) * Prior radiation therapy that would overlap with current target volume * Inability to undergo magnetic resonance imaging (MRI)

Design outcomes

Primary

MeasureTime frameDescription
local tumor controlUp to 3 years since enrollmentWill assess local tumor control rate. Local tumor control is defined as freedom from progressive disease (PD). Will be calculated as the proportion of patients who did not experience PD within 3-year follow up with 95% binomial proportion confidence interval for the entire population and each cohort independently. The same calculation will be repeated for the entire study population and each cohort separately. Kaplan-Meier method will be used to estimate the local control rates for the entire population and each cohort independently.
Incidence of adverse eventsup to 3 yearsWill be assessed and graded according to Common Terminology Criteria for Adverse Events version 5.0

Secondary

MeasureTime frameDescription
Neurocognitive effectsUp to 3 yearsWill be summarized by summary statistics.
Health related quality of lifeUp to 3 yearsWill be summarized by summary statistics.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORBree R Eaton

Emory University Hospital/Winship Cancer Institute

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 18, 2026