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Clinical Trial Summary

The objective of this study is to evaluate the safety and efficacy of fractionated ablative 10,600nm CO2 laser assisted delivery of 2% minoxidil solution in the treatment of MPHL. In this cohort study, patients will randomly be assigned stand-alone laser treatment, laser assisted drug delivery of minoxidil 2% solution, and laser assisted drug delivery of minoxidil 2% solution plus at home 5% minoxidil treatment. The primary endpoints will be to assess the change from baseline in investigator and subject Hair Growth Assessments (HGA), Hair Growth Index (HGI) and the Hair Growth Satisfaction Scale (HGSS) over 8-12 weeks in each of the three groups. The secondary endpoints will be expert assessment of hair density from baseline and evaluation of safety and adverse events, and pharmacokinetic (PK) data.


Clinical Trial Description

Male pattern hair loss (MPHL) is a common, frustrating, and difficult to manage scalp disease with few treatment options available. Though the mechanism remains unclear, minoxidil is a well-established treatment for MPHL. With the advent of laser assisted drug delivery, the investigators seek to investigate the use of laser assisted minoxidil delivery to improve bioavailability, and subsequent hair growth for subjects MPHL. With an improved clinical outcome and increased treatment efficiency, patient quality of life would be enhanced and fewer at home topical treatments with minoxidil may be required. Additionally, this study will assist in understanding the effects of stand-alone laser therapy on hair growth and may also be used as a background or framework for a growing number of studies investigating this technology as a drug delivery system. MPHL, also known as androgenetic alopecia, is a non-scarring alopecia resulting in gradual hair loss localized to the scalp. In men, this progressive hair loss disorder results in characteristic thinning of hair over the vertex and frontal regions.1 The Hamilton-Norwood scale categorizes this typical clinical progression.2 While the pathogenesis of MPHL is not entirely elucidated, it has been proposed to be an age and hormone dependent process with dihydrotestosterone playing a significant role.2,3 Genetic factors may also contribute to the disease.4 Topical minoxidil is an FDA approved treatment for MPHL. Minoxidil 2 and 5% solution are known to increase hair regrowth in men with androgenetic alopecia.7 While the mechanism remains unknown, it has been proposed minoxidil increases the duration of anagen and vascular supply to the follicular structure.8 Topical treatments for MPHL such as minoxidil have limited efficacy, as topical delivery of medication has low bioavailability.9 With the advent of fractionated ablative and non-ablative laser technologies, more efficient drug delivery to the level of the superficial epidermis and dermis is now possible. The outermost layer of skin, the stratum corneum, impedes the diffusion of topical medications to follicular structures in the dermis and hypodermis. 9 Ablative fractionated laser devices create vertical channels, permitting topical medication to breach the skin's top layer, the stratum corneum, and reach deep skin layers where hair follicles reside.9 Both ablative and non-ablative fractionated laser treatments augment collagen deposition and cause growth factor mediated changes to skin ultrastructure.10 Non-ablative fractionated laser therapy in MPHL patients improves hair density with and without topical administration of growth factor.10 Our proposed study confers an additional mode of treatment beyond laser-only therapy by using an ablative fractionated laser to deliver minoxidil 2% solution percutaneously. Herein, the investigators seek to further optimize patient treatment by investigating a combination of these treatment modalities for management of MPHL. The investigators hypothesize that fractionated ablative 10,600nm CO2 laser treatment and laser assisted drug delivery of minoxidil 2% solution will result in increased hair growth. With this improved clinical outcome and increased treatment efficiency, patient quality of life will be enhanced and fewer at home topical treatments may be required. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03852992
Study type Interventional
Source University of Minnesota
Contact
Status Withdrawn
Phase Phase 2
Start date September 30, 2022
Completion date July 1, 2023

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