Use of Topical Liquid Diclofenac Following Laser Microporation of Cutaneous Neurofibromas in Patients With NF1

Neurofibromatosis 1 Clinical Trial

Official title: Clinical Assessment of the Use of Topical Liquid Diclofenac Following Laser Microporation of Cutaneous Neurofibromas in Patients With Neurofibromatosis Type 1

Status Completed

Clinical Trial Summary

This is an open, controlled, prospective, proof-of-concept study, in 7 patients presenting NF1 and cutaneous neurofibromas. This study will include three treatment visits to the study center and three follow-up visits. Treatment will consist of two stages: neurofibroma microporation using the laser device, followed by topical application of one drop of diclofenac 25mg/ml on the surface of the neurofibroma; followed by re-application of one drop of diclofenac, twice daily, for three days. The applications subsequent to the first application will be performed by the patients. Subjects will return to the study center at three day intervals (Assessments 2 & 3) for new microporation and topical diclofenac application, followed by at-home topical diclofenac application for three more days. Assessment 4 will take place 3 days after Assessment 3. Assessment 5 will take place 7 days after the end of the treatment period and Assessment 6 at 30 days after the last application of study drug. The primary efficacy variable in this study is the inflammatory process with the presence of tissue necrosis. The primary safety variable is the occurrence of adverse events considered to be associated with the study drug, occurring during the treatment period.

Clinical Trial Description

Neurofibromatosis type 1 (NF1) is an autosomal dominant neurocutaneous syndrome with highly variable clinical manifestations and that has a worldwide incidence of approximately 1/2500. The most common lesion is the cutaneous neurofibroma, appearing on the skin of 90% of adults with NF1. The number of cutaneous neurofibromas in an affected individual can vary from a few to several thousand. These lesions may be surgically removed, but typically recur, and surgical removal often leads to scarring. Intralesional administration of diclofenac was previously reported with favorable results, and significant inflammatory processes were observed within the treated neurofibromas, with tissue necrosis and detachment of some treated neurofibromas, effects that were not observed among the control neurofibromas. The primary objective of this study is to evaluate the use of topical diclofenac in the treatment of cutaneous neurofibromas in patients with NF1. The secondary objective of this study is to assess the safety of the use of topical diclofenac in the treatment of cutaneous neurofibromas in patients with NF1. This is an open, controlled, prospective, proof-of-concept study, in 7 patients presenting NF1 and cutaneous neurofibromas. This study will include three treatment visits to the study center and three follow-up visits. Treatment will consist of two stages: neurofibroma microporation using the laser device, followed by topical application of one drop of diclofenac 25mg/ml on the surface of the neurofibroma; followed by re-application of one drop of diclofenac, twice daily, for three days. The applications subsequent to the first application will be performed by the patients. Subjects will return to the study center at three day intervals (Assessments 2 & 3) for new microporation and topical diclofenac application, followed by at-home topical diclofenac application for three more days. Assessment 4 will take place 3 days after Assessment 3. Assessment 5 will take place 7 days after the end of the treatment period and Assessment 6 30 days after the last application of study drug. The primary efficacy variable in this study is the inflammatory process with the presence of tissue necrosis. The primary safety variable is the occurrence of adverse events considered to be associated with the study drug, occurring during the treatment period. Prior to any study-related procedure, written informed consent will be obtained from the participant. The Clinical Research From will be filled, stored, coded, and the data will be analyzed using GraphPad Prism, v. 5.0. Frequency tables will be generated and central tendencies calculated (mean, median, mode). ;

Related Conditions & MeSH terms

• Cutaneous Neurofibroma
• Nerve Sheath Neoplasms
• Neurofibroma
• Neurofibromatoses
• Neurofibromatosis 1

• NCT number: NCT03090971
• Study type: Interventional
• Source: Fundação Educacional Serra dos Órgãos
• Status: Completed
• Phase: Phase 2
• Start date: February 15, 2017
• Completion date: June 30, 2017