10 Clinical Trials for Various Conditions
This is a multi-center, randomized, double-blind, vehicle-controlled, and sequential group Phase 2 study. Eligible subjects aged 18 to 65 years old with PWB of face and/or neck area (except subjects for Stage One) will receive Hemoporfin PDT or vehicle PDT in 8-week cycles at fixed drug dose (5 mg/kg) and different light fluence.
Port wine stains Birthmark are congenital, progressive vascular malformations of the skin that occur in approximately 0.7% of newborns. Approximately 1.5 million individuals in the United States and 32 million people worldwide have Port wine stains birthmarks. Two-thirds of these malformations occur on the face. Personality development of virtually all patients is adversely affected as a result of the negative reaction of others to a "marked" person. Detailed studies have documented lower self-esteem and difficulties with interpersonal interactions in Port wine stains patients. Port wine stains are initially flat and red, but with time, they tend to darken to purple and become thickened as vascular nodules develop. This thickening occurs in approximately two-thirds of lesions and further disfigures the facial features of many patients.
Port-wine stain is a congenital, progressive vascular malformation of human skin involving post-capillary venules that occurs in an estimated 0.3% of children and can alter personality development and psychological in children.
The researcher develop non-invasive imaging modalities for assessment of port wine stain during laser therapy treatment of Port Wine Stain. The imaging modalities will be used to guide immediate retreatment of regions of persistent perfusion during the procedure.
The researchers want to collect data on safety and efficacy of combined pulsed dye laser and rapamycin to improve fading/blanching of port wine stain birthmarks as compared to pulsed dye laser alone, which is the current standard of care. This single center pilot and feasibility study will have a target enrollment of 40 port wine stain subjects at the Beckman Laser Institute and Medical Clinic, University of California, Irvine.
The purpose of this study is to improve port wine stain therapeutic outcome in response to laser therapy. The researchers want to determine whether the combined use of pulsed dye laser therapy and rapamycin will improve PWS therapeutic outcome.
Port wine stains are red birthmarks that without treatment persist for a lifetime. They are frequently found on the face and can be conspicuous and disfiguring, negatively impacting social interactions for these patients. Treating Port wine stains is difficult. The standard of care is to use laser treatment, but over 80% of patients fail to completely clear despite multiple treatments. The growth of additional blood vessels (angiogenesis) following the Laser treatment is likely an important factor in why these lesions persist despite therapy.
Port wine stain are a congenital, progressive vascular malformation of human skin. The pulsed dye laser is approved by the Food and Drug Administration for the treatment of choice. However, the degree of port wine stain blanching seen following pulsed dye laser treatment remains variable and unpredictable. If the ultimate standard required is complete lesion blanching, the average success rate is below 10%, even after undergoing numerous pulsed dye laser treatments. Moreover, less than 50% of patients achieve 50% fading of their Port wine stain in response to pulsed dye laser therapy.
The purpose of the study is to improve the efficacy of pulsed dye laser treatment of port wine stain birthmarks. Involvement in the protocol will involve formal documentation of the level of treatment pain, duration of post-treatment purpura and incidence of side effects. In addition, measurements will be taken of blood substances that promote blood vessel formation/regrowth and non-invasive reflectance measurements and photographs will be taken before and after treatment. The objective of this study is to document the degree of port wine stain lightening, the incidence of side effects and the presence of angiogenic factors induced during treatment with the pulsed dye laser in association with cooling agent. This information ultimately lead to improved treatment.
Dermatologists have for many years treated vascular lesions by a variety of modalities including cryosurgery, electrotherapy, dermabrasion and radiation. It has been hypothesized that simultaneous delivery of these two wavelengths may provide safer, and in some cases more effective, vascular lesion removal. The Tandem laser is capable of emitting multiple cryogen spurts intermittently with multiple 532/1064 nm laser pulses.This mode may reduce malformed blood vessels with a low incidence of long-term side effects.