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Proton Radiation for Chordomas and Chondrosarcomas

Proton Radiation For Chordomas and Chondrosarcomas

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01449149
Enrollment
54
Registered
2011-10-10
Start date
2010-03-31
Completion date
2025-09-04
Last updated
2025-12-05

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

Conditions

Chondrosarcomas, Chordomas

Keywords

Age 18 or greater, No prior radiation

Brief summary

The objectives of this study are 1) To evaluate the feasibility and acute side effects of proton therapy for chordomas and chondrosarcomas and 2) To evaluate clinical outcomes and long term side effects of proton beam radiation for treatment of chordomas and chondrosarcomas.

Detailed description

This trial will be conducted in two phases: a feasibility then a phase II trial. Once feasibility and safety are established in the first 12 pts. the phase II study will begin. Proton therapy at standard doses is not known to improve clinical outcome but will likely reduce fatigue and toxicity.

Interventions

RADIATIONProton Therapy

Sponsors

Abramson Cancer Center at Penn Medicine
Lead SponsorOTHER

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

* Histologically confirmed diagnosis of chordoma or chondrosarcoma. * Patients must have no evidence of metastatic disease based on routine imaging (CT or MRI of the chest/abdomen/pelvis, bone scan, etc.) * Patients must have an ECOG score equal to or less than 2. * Age ≥ 18 years. * Patients must be able to provide informed consent. * Adequate bone marrow function: WBC ≥ 4000/mm3, platelets ≥ 100, 000mm3 * Women of child-bearing potential as long as she agrees to use a recognized method of birth control (e.g. oral contraceptive , IUD, condoms or other barrier methods etc.) Hysterectomy or menopause must be clinically documented. * Tumors arising in the skull and spine.

Exclusion criteria

* Prior or simultaneous malignancies within the past two years (other than cutaneous squamous or basal cell carcinoma, melanoma in situ or thyroid carcinoma) * Patients with the following histologies are excluded: melanoma , other soft tissue or bony sarcomas, giant cell tumor aneurismal bone cyst or metastatic lesions from other histologies. * Pregnant women. * Actively being treated on any other therapeutic research study. * Tumors arising outside of the CNS.

Design outcomes

Primary

MeasureTime frameDescription
Feasibility of Proton RT for Chordomas and ChondrosarcomasFrom enrollment to treatment completion or withdrawal, whichever occurred first, assessed up to 133 monthsThe purpose of this study was to evaluate the feasibility and safety of dose-escalated proton beam therapy for treating chordomas and chondrosarcomas of the skull base and spine. The feasibility, as defined by ≥10% of patients experiencing either: unsatisfactory dosimetry, inability to complete all of his/her treatments within 10 days of estimated completion date and requiring no break \>5 days, and no greater than 20% of patients experiencing ≥grade 3 toxicity from RT.

Secondary

MeasureTime frameDescription
Acute ToxicitiesWith in the 90 days from tx start dateAny grade 3 or higher toxicity observed within 90 days from start of therapy.
Late ToxicitiesEvery 3 months for 3 Years from the tx start date and assessed up to 133 monthsAny grade 3 or higher toxicity observed later than 90 days from completion of therapy. Timepoints included below: Approx. 90 days from tx start. Follow-Up Months (approximately from completion of treatment) 3,6,9,12,15, 18, 21, 24 (approx.) Months 30, 36 (approximately from completion of treatment) Year 4 and 5 (approximately from completion of treatment)

Countries

United States

Participant flow

Participants by arm

ArmCount
Proton Group
Proton radiation total dose 72.00 to 79.2 Gy(RBE) in 40-44 fractions Proton Therapy
54
Total54

Baseline characteristics

CharacteristicProton Group
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
13 Participants
Age, Categorical
Between 18 and 65 years
41 Participants
Age, Continuous54 years
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
54 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Histology
Chondrosarcoma
12 Participants
Histology
Chordoma
42 Participants
Lesion site
Clivus/skull base
39 Participants
Lesion site
C spine
3 Participants
Lesion site
L spine
1 Participants
Lesion site
Sacrum/coccyx
11 Participants
Lesion site
T spine
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
2 Participants
Race (NIH/OMB)
Black or African American
2 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
1 Participants
Race (NIH/OMB)
White
49 Participants
Region of Enrollment
United States
54 participants
Sex: Female, Male
Female
32 Participants
Sex: Female, Male
Male
22 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
3 / 54
other
Total, other adverse events
45 / 54
serious
Total, serious adverse events
15 / 54

Outcome results

Primary

Feasibility of Proton RT for Chordomas and Chondrosarcomas

The purpose of this study was to evaluate the feasibility and safety of dose-escalated proton beam therapy for treating chordomas and chondrosarcomas of the skull base and spine. The feasibility, as defined by ≥10% of patients experiencing either: unsatisfactory dosimetry, inability to complete all of his/her treatments within 10 days of estimated completion date and requiring no break \>5 days, and no greater than 20% of patients experiencing ≥grade 3 toxicity from RT.

Time frame: From enrollment to treatment completion or withdrawal, whichever occurred first, assessed up to 133 months

Population: Follow-up

ArmMeasureGroupValue (NUMBER)
Proton GroupFeasibility of Proton RT for Chordomas and Chondrosarcomas>10% of patients experiencing unstatisfactory dosimetry or inability to complete his/her treatments3.7 percentage of patients did not meet this
Proton GroupFeasibility of Proton RT for Chordomas and Chondrosarcomas20% of patients experienceing >= grade 3 toxicity1.9 percentage of patients did not meet this
Secondary

Acute Toxicities

Any grade 3 or higher toxicity observed within 90 days from start of therapy.

Time frame: With in the 90 days from tx start date

Population: Number of cases

ArmMeasureGroupValue (NUMBER)
Proton GroupAcute ToxicitiesCognitive disturbance3 Number of cases
Proton GroupAcute ToxicitiesVoice alteration3 Number of cases
Proton GroupAcute ToxicitiesDysarthria1 Number of cases
Proton GroupAcute ToxicitiesFatigue37 Number of cases
Proton GroupAcute ToxicitiesRadiation dermatitis28 Number of cases
Proton GroupAcute ToxicitiesHeadache14 Number of cases
Proton GroupAcute ToxicitiesAlopecia9 Number of cases
Proton GroupAcute ToxicitiesInsomnia9 Number of cases
Proton GroupAcute ToxicitiesParesthesia7 Number of cases
Proton GroupAcute ToxicitiesConstipation7 Number of cases
Proton GroupAcute ToxicitiesPain4 Number of cases
Proton GroupAcute ToxicitiesDysphagia6 Number of cases
Proton GroupAcute ToxicitiesXerostomia4 Number of cases
Proton GroupAcute ToxicitiesDiarrhea2 Number of cases
Proton GroupAcute ToxicitiesAnorexia5 Number of cases
Proton GroupAcute ToxicitiesUrinary (retention or incontinence)6 Number of cases
Proton GroupAcute ToxicitiesAtaxia5 Number of cases
Proton GroupAcute ToxicitiesOral mucositis2 Number of cases
Proton GroupAcute ToxicitiesEdema2 Number of cases
Proton GroupAcute ToxicitiesVisual/blurry2 Number of cases
Proton GroupAcute ToxicitiesNerve palsy1 Number of cases
Proton GroupAcute ToxicitiesTinnitus1 Number of cases
Proton GroupAcute ToxicitiesDysgeusia5 Number of cases
Secondary

Late Toxicities

Any grade 3 or higher toxicity observed later than 90 days from completion of therapy. Timepoints included below: Approx. 90 days from tx start. Follow-Up Months (approximately from completion of treatment) 3,6,9,12,15, 18, 21, 24 (approx.) Months 30, 36 (approximately from completion of treatment) Year 4 and 5 (approximately from completion of treatment)

Time frame: Every 3 months for 3 Years from the tx start date and assessed up to 133 months

Population: Number of cases

ArmMeasureGroupValue (NUMBER)
Proton GroupLate ToxicitiesLate Fatigue17 Number of cases
Proton GroupLate ToxicitiesLate Headache8 Number of cases
Proton GroupLate ToxicitiesLate Pain4 Number of cases
Proton GroupLate ToxicitiesLate Loss of smell1 Number of cases
Proton GroupLate ToxicitiesLate Cognitive disturbance2 Number of cases
Proton GroupLate ToxicitiesLate Xerostomia1 Number of cases
Proton GroupLate ToxicitiesLate Paresthesia5 Number of cases
Proton GroupLate ToxicitiesLate Insomnia1 Number of cases
Proton GroupLate ToxicitiesLate Diarrhea1 Number of cases
Proton GroupLate ToxicitiesLate Neck edema1 Number of cases
Proton GroupLate ToxicitiesLate Dysgeusia2 Number of cases
Proton GroupLate ToxicitiesLate Ataxia5 Number of cases
Proton GroupLate ToxicitiesLate Aphasia1 Number of cases
Proton GroupLate ToxicitiesLate Radionecrosis of the brain3 Number of cases
Proton GroupLate ToxicitiesLate Anorexia2 Number of cases
Proton GroupLate ToxicitiesLate Dysphagia2 Number of cases
Proton GroupLate ToxicitiesLate Muscle weakness1 Number of cases
Proton GroupLate ToxicitiesLate Intranasal carotid blowout1 Number of cases
Proton GroupLate ToxicitiesLate Osteoradionecrosis1 Number of cases

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026