Retinoblastoma
Conditions
Keywords
Children with retinoblastoma, Retinoblastoma, Pediatrics, Proton Beam Radiation Therapy, Radiation Therapy, Tumor of the Eye, Ophthalmic EUA, Examination under anesthesia, Bilateral retinoblastoma, Unilateral retinoblastoma, Extraocular disease, Intraocular procedure
Brief summary
The purpose of this trial is to evaluate proton beam radiation therapy as an alternative to external photon beam irradiation in children with retinoblastoma as a means of local tumor control and ocular retention.
Detailed description
External photon beam radiation therapy (which is current standard of care) has been used in the treatment of retinoblastoma. It is a form of radiation therapy in which the radiation is delivered by a machine pointed at the area to be radiated. Proton beam radiation therapy is a form of external photon beam radiation therapy, but it may be more effective because its adjusted dosing delivers less radiation to surrounding areas of the tumor, which helps preserve other tissues and cause fewer side effects. Before you can start treatment on this study, you will have what are called screening tests. These tests will help the doctor decide if you are eligible to take part in this study. Your eye doctor will perform an assessment of your eye, including an exam while you are under anesthesia. This exam will include a dilated eye exam, photography of your affected eye (by a Ret-Cam), ultrasound of your affected eye, and imaging scans, such as computed tomography (CT) or magnetic resonance imaging (MRI), if the doctor thinks it is necessary. The assessments will be done to check and confirm the status of the disease. After diagnosis of retinoblastoma, the study doctor will first see if external photon beam radiation therapy is a reasonable treatment option for you. If external photon beam radiotherapy is deemed appropriate for you, you will be eligible to receive proton beam radiation therapy in this study. If you are found to be eligible to take part in this study, you will be treated with proton beam radiation therapy. Treatment will begin within 1 week of referral to the M. D. Anderson Proton Center. It will be given daily for 5 days in a row each week (except for Saturdays, Sundays, and holidays). The whole treatment will take about 4-6 weeks. Within 2-4 weeks after completion of therapy, you will have an eye exam performed under anesthesia (like the one during screening). You will have repeated eye exams under anesthesia, depending on the appearance and response of the tumor to therapy. This will occur about every 1-4 months. You will continue to have these eye exams until the tumors are considered to be stable or unless your disease gets worse. If the disease gets worse or you experience any intolerable side effects, you may be taken off treatment. You will be required to have lifelong eye and medical assessments to continue to monitor you for disease. If no disease is found 5 years after completion of proton beam radiation therapy, you will be considered free of disease. You will then have annual (yearly) eye and pediatric assessment through adulthood. This is an investigational study. Up to 20 patients will take part in this study. All will be enrolled at M.D. Anderson.
Interventions
RADIATIONProton Beam Radiation Therapy
Radiation given daily for 5 days in a row each week (except for Saturdays, Sundays, and holidays). The whole treatment will take about 4-6 weeks.
PROCEDUREOphthalmic EUA
Ophthalmic examination under anesthesia including dilated eye exam, ocular fundus photography (Ret-Cam), ocular echography and neuro-radiologic assessment (as deemed necessary)
Sponsors
M.D. Anderson Cancer Center
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Healthy volunteers
No
Inclusion criteria
1. Active or recurrent retinoblastoma patient eligible for treatment of external beam radiation therapy. 2. A parent or guardian who can provide informed consent to a minor or child participant. 3. No concurrent infection. 4. No contraindication for repeated general anesthesia/sedation.
Exclusion criteria
1. Inability to return for multiple examinations under anesthesia. 2. Medical contraindication for exams under anesthesia/sedation. 3. Unreliable follow-up.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Rate of Local Control in the Globe at 12 Months | 12 months | Where proton beam radiation therapy used as an alternative to external photon beam irradiation in children with retinoblastoma as a means of local tumor control and ocular retention, local tumor control measured for participants with a globe as tumor regression with ocular retention, and for post enucleation measured as lack of orbital tumor recurrence. |
Countries
United States
Participant flow
Recruitment details
Recruitment Period: All recruitment done at The University of Texas (UT) MD Anderson Cancer Center.
Pre-assignment details
Study closed early due to low accrual, few eligible participants.
Participants by arm
| Arm | Count |
|---|---|
| Proton Beam Radiation Therapy Proton Beam Radiation Therapy given daily for 5 days in a row each week where whole treatment takes about 4-6 weeks. Ophthalmic examination under anesthesia including dilated eye exam, ocular fundus photography (Ret-Cam), ocular echography and neuro-radiologic assessment (as deemed necessary). | 2 |
| Total | 2 |
Baseline characteristics
| Characteristic | Proton Beam Radiation Therapy |
|---|---|
| Age, Categorical <=18 years | 2 Participants |
| Age, Categorical >=65 years | 0 Participants |
| Age, Categorical Between 18 and 65 years | 0 Participants |
| Region of Enrollment United States | 2 participants |
| Sex: Female, Male Female | 2 Participants |
| Sex: Female, Male Male | 0 Participants |
Adverse events
| Event type | EG000 affected / at risk |
|---|---|
| deaths Total, all-cause mortality | — / — |
| other Total, other adverse events | 2 / 2 |
| serious Total, serious adverse events | 1 / 2 |
Outcome results
Primary
Rate of Local Control in the Globe at 12 Months
Where proton beam radiation therapy used as an alternative to external photon beam irradiation in children with retinoblastoma as a means of local tumor control and ocular retention, local tumor control measured for participants with a globe as tumor regression with ocular retention, and for post enucleation measured as lack of orbital tumor recurrence.
Time frame: 12 months
Population: No analysis performed. Study did not meet anticipated enrollment.