Photodynamic Therapy for Benign Dermal Neurofibromas
The investigators wish to determine the time to disease progression for benign neurofibromas treated with Levulan Kerastick topical photosensitizer and red light photodynamic therapy (PDT) in patients with neurofibromatosis type 1 (NF1).
The investigators also wish to measure tumor size for control and treatment tumors in order to gain insights into tumor growth rates.
|Study Design:||Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
|Official Title:||Topical Photodynamic Therapy (PDT) With Levulan® Kerastick® for Benign Dermal Neurofibromas Phase II|
- Time to disease progression [ Time Frame: 3 years ]The time it takes for 50% growth in tumor size over baseline measurements.
- Tumor growth rate [ Time Frame: 3 years ]Measure tumor size for control and treatment tumors in order to gain insights into tumor growth rates.
|Study Start Date:||August 2016|
|Estimated Study Completion Date:||August 2023|
|Estimated Primary Completion Date:||August 2022 (Final data collection date for primary outcome measure)|
Experimental: PDT Treatment
Each subject will have either placebo or Levulan Kerastick topical application applied to matched sets of neurofibromas. Each subject will have both sets, in order to serve as his/her own control subject.
After 24 hours, both sets of neurofibromas, Levulan and placebo treated, will be irradiated with red light (630 nm) from an Omnilux Revive light device at 100 mW/cm2 for 1000 seconds (16.7 minutes).
Procedure: PDT Treatment
Drug: Levulan Kerastick
Drug: Topical placebo
Device: Omnilux Revive
Procedure: Photodynamic therapy
Other: Tumor growth rate measurements
Neurofibromas contain a large quantity of fibrous matter, and it is not anticipated that significant reductions in tumor size can be achieved in large, long established, tumors. Cutaneous neurofibromas, which do not usually become apparent until puberty, continue to increase in size and number throughout adulthood. The psychosocial burden of these disfiguring tumors is significant, and the targeted age group (14-30) is at a life period associated with an acceleration in tumor growth. It is for these reasons that the investigators hope to affect the growth rate of less established tumors, in order to prevent or lessen this burden as the patient progresses further into adulthood.
Therefore, the investigators wish to determine the time to disease progression (defined as 50% growth in size over baseline) for benign neurofibromas treated with PDT in patients with neurofibromatosis type 1 (NF1) in subjects aged 14-30.
The treatment will consist of choosing several neurofibromas of similar size, and applying a topical drug called Levulan, or just the topical application alone (a placebo). After 1 day, the neurofibromas will be illuminated with red light (both Levulan and placebo). The Levulan is what is known as a photosensitizer, and will be activated by the red light to potentially kill some of the tumor cells. Every 4 months after, for three years, the tumors will be measured to see if they are growing more slowly than the ones with the placebo application alone.
Please refer to this study by its ClinicalTrials.gov identifier: NCT02728388
|Contact: Harry T Whelan, MDemail@example.com|
|United States, Wisconsin|
|The Medical College of Wisconsin||Recruiting|
|Milwaukee, Wisconsin, United States, 53226|
|Contact: Harry T Whelan, MD 414-266-7540 firstname.lastname@example.org|
|Principal Investigator:||Harry T Whelan, MD||Medical College of Wisconsin|