Photodynamic Therapy (PDT) for Recurrent Pediatric Brain Tumors
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|ClinicalTrials.gov Identifier: NCT01682746|
Recruitment Status : Completed
First Posted : September 11, 2012
Last Update Posted : February 25, 2019
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The goal of this proposal is to evaluate a new Photodynamic Therapy (PDT) modification which could revolutionize the treatment of brain tumors in children and adults. There are currently few cases published involving the use of PDT in infratentorial (in the posterior fossa) brain tumors in general and specifically those occurring in children. The investigators propose to test a technique, for the first time in the U.S., that demonstrated in Australian adult glioblastoma patients dramatic long-term, survival rates of 57% (anaplastic astrocytoma) and 37% (glioblastoma multiforme). These results are unprecedented in any other treatment protocol.
Photodynamic therapy (PDT) is a paradigm shift in the treatment of tumors from the traditional resection and systemic chemotherapy methods. The principle behind photodynamic therapy is light-mediated activation of a photosensitizer that is selectively accumulated in the target tissue, causing tumor cell destruction through singlet oxygen production. Therefore, the photosensitizer is considered to be the first critical element in PDT procedures, and the activation procedure is the second step. The methodology used in this proposal utilizes more intensive laser light and larger Photofrin photosensitizer doses than prior PDT protocols in the U.S. for brain tumor patients. The PDT will consist of photoillumination at 630 nm beginning at the center of the tumor resection cavity, and delivering a total energy of 240 J cm-2. The investigators feel that the light should penetrate far enough into the tissue to reach migrating tumor cells, and destroy these cells without harming the healthy cells in which they are dispersed.
The investigators will be testing the hypothesis that pediatric subjects with progressive/recurrent malignant brain tumors undergoing PDT with increased doses of Photofrin® and light energy than were used in our previous clinical study will show better progression free survival (PFS) and overall survival (OS) outcomes. PDT will also be effective against infratentorial tumors. The specific aims include determining the maximum tolerable dose (MTD) of Photofrin in children and looking for preliminary effectiveness trends.
|Condition or disease||Intervention/treatment||Phase|
|Brain Tumor, Recurrent||Drug: Photofrin (porfimer sodium) & photodynamic therapy.||Phase 1|
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||5 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||Photodynamic Therapy (PDT) for Poor Prognosis Recurrent/Refractory Malignant Brain Tumors - A Phase I Study|
|Study Start Date :||March 2013|
|Actual Primary Completion Date :||June 29, 2018|
|Actual Study Completion Date :||June 29, 2018|
Photofrin (porfimer sodium) photodynamic therapy.
Drug: Photofrin (porfimer sodium) & photodynamic therapy.
Intravenous (IV) Photofrin
This is a dose escalation study. Patients will receive Photofrin via an IV infusion approximately 24 hours prior to their tumor resection surgery and Photodynamic Therapy (PDT). Patients will be light sensitive immediately upon receiving the Photofrin and must observe photosensitivity & light precautions for a minimum of 30 days after the infusion.
Photodynamic Therapy (PDT)
After tumor resection, an optical fiber will be placed in the approximate center of the surgical cavity. Intralipid will be infused into the open tumor cavity while PDT is performed. The Intralipid will diffuse the light and ensure uniform delivery. Photoactivation of Photofrin is controlled by the total light dose delivered over the treatment time.
- Maximum tolerable dose (MTD) of Photofrin® in pediatric subjects [ Time Frame: One to four weeks from PDT ]
MTD is defined as the Photofrin® dose that precedes the dose level used with a subgroup of subjects that exhibits a greater than 33% DLT occurrence.
DLT is defined as any of the following events with reasonable possibility to be attributable to the experimental intervention:
- Neurotoxicity: defined as a decline in neurological function manifest within 1 week of PDT and persistent to 4 weeks post-PDT. Adverse events of neurologic function of grade 4, or a level change from grade 1 to grade 3, within this period will constitute neurotoxicity for this study. The CTCAE V4.02 will be used.
- Photosensitivity: defined as a photosensitivity adverse event (CTCAE category dermatology/skin) of grade 4 occurring within the same period.
- Ocular sensitivity: Photofrin®-induced ocular sensitivity is defined as a photophobia adverse event (CTCAE category ocular/visual) of grade 4 within the same period.
- Any other toxicity of CTCAE grade 4 or higher within the same period.
- Brain tumor response [ Time Frame: Response ocurring within 3 years after PDT ]To preliminarily define the antitumor activity of Photofrin and laser light activation within the confines of a Phase 1 Study. We will follow progression free survival and overall survival for 3 years post PDT treatment.
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|Ages Eligible for Study:||6 Months to 18 Years (Child, Adult)|
|Sexes Eligible for Study:||All|
|Accepts Healthy Volunteers:||No|
- Age: ≥ 6 months and < 18 years
- Disease: Patients with relapsed or refractory brain tumors are eligible. Patients must have had histologic verification of malignancy at original diagnosis or relapse. Tumors can be either supratentorial or infratentorial (posterior fossa) in location.
- Disease Status: Patients must have potentially resectable disease.
- Therapeutic Options: Patients' current disease state must be one for which there is no known curative therapy or therapy proven to prolong survival with an acceptable quality of life.
- Performance Level: Karnofsky 50% or greater for patients > 16 years of age and Lansky 50 or greater for patients < 16 years of age. Note: Neurologic deficits in patients with CNS tumors must have been relatively stable for at least 7 days prior to study enrollment. Patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score.
- Predictable Life Expectancy: > 8 weeks
- Prior Therapy: Patients must have fully recovered from the acute toxic effects of all prior anti-cancer chemotherapy. At least 3 weeks from previous chemotherapy and 4 weeks from prior radiation therapy
Adequate bone marrow function
Absolute neutrophil count ≥ 1,000
Platelet count ≥ 100,000 (may transfuse to meet requirement)
Adequate renal function
Creatinine clearance or radioisotope GFR ≥ 70 mL/min/1.73 m2 OR
A serum creatinine within normal range based on age/gender
Adequate liver function Bilirubin (direct) ≤ 3X upper limit of normal (ULN) for age
SGPT (ALT) ≤ 10X ULN
For the purpose of this study, the ULN for SGPT is 45 U/L
Serum albumin ≥ 2 g/dL
PT and INR ≤ 2X ULN for age
- Central Nervous System Function: Patients with seizure disorder may be enrolled if receiving non- enzyme inducing anticonvulsants and well controlled.
- Informed Consent: All patients and/or their parents or legally authorized representatives must sign a written informed consent. Assent, when appropriate, will be obtained according to institutional guidelines.
- Archival tumor tissue slides from initial diagnosis should be reviewed by CHW institutional pathologists prior to study enrollment whenever possible.
- Disseminated disease (metastatic disease)
- Pregnancy or Breast-Feeding: Pregnant or breast-feeding women will not be entered on this study, as risks of fetal and teratogenic adverse effects of Photofrin® are not known.
- Other concurrent tumor therapy
- Subjects with porphyria
- Subjects taking potentially photosensitizing drugs
- The presence of adverse events of neurologic function, photosensitivity, or photophobia Grade 4 or higher (CTCAE Version 4.0)
- Allergy to eggs, soybean oil, or safflower oil (due to potential allergy against intralipids)
- Patients who in the opinion of the investigator may not be able to comply with the safety monitoring requirements of the study are not eligible.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01682746
|United States, Wisconsin|
|Children's Hospital of Wisconsin|
|Wauwatosa, Wisconsin, United States, 53226|
|Principal Investigator:||Harry T Whelan, MD||Medical College of Wisconsin|
|Principal Investigator:||Jeff Knipstein, MD||Medical College of Wisconsin|
|Responsible Party:||Harry T Whelan, MD, Bleser Professor of Neurology, Medical College of Wisconsin|
|Other Study ID Numbers:||
|First Posted:||September 11, 2012 Key Record Dates|
|Last Update Posted:||February 25, 2019|
|Last Verified:||February 2019|
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