Patients with neurofibromatosis type 1 (NF1) commonly develop non-cancerous tumors called plexiform neurofibromas. These tumors can be defined as "high-risk" when they result in severe pain, physical disability, organ dysfunction and/or become life-threatening. Presently, there is no effective medical therapy to offer patients with "high-risk" plexiform neurofibromas, and surgery does not provide lasting help. This study will evaluate the effectiveness of two treatment combinations in patients with "high-risk" plexiform neurofibromas.
The study's design involves treating eligible patients with a combination of celecoxib and pegylated interferon alpha-2b. If the patients have at least a partial response after six months, they may continue on the same treatment for up to two years. If the patient experiences less than a partial response, or has progressive disease after six months of therapy, then vincristine and temozolomide will be added to the celecoxib and interferon alpha-2b backbone. Response to treatment will be assessed after a minimum of six months, presuming the patient has not experienced progressive disease. Total duration of therapy on study is two years for any individual treatment plan.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
9
age and weight dependant
age and weight dependant
age and weight dependant
Helen DeVos Children's Hospital
Grand Rapids, Michigan, United States
Improvement of Symptoms and Pain
Subjects will be evaluated for pain and Quality of Life scores
Time frame: Monthly physical exam first three months and then every three months after, for up to 36 months
At Least 50% Shrinkage in Tumor Measurements by Physical Examination
Time frame: Monthly physical exam first three months and then every three months after, for up to 36 months
Response by MRI Measurements
partial response by RICST criteria is defined as \>50% tumor shrinkage
Time frame: evaluated 6, 12 and 24 months compared to baseline
No Reported Psychological Toxicity Based Upon Psychological Evaluations
Psychological toxicity defined as suicidal ideation
Time frame: Psychological evaluation at 24 months
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age and weight dependant