Excimer Light Treatment for Idiopathic Guttate Hypomelanosis: A Pilot Study

Seton Healthcare Family

Status

Completed

Conditions

Idiopathic Guttate Hypomelanosis

Treatments

Device: Excimer Light Treatment

Study type

Interventional

Funder types

Other

Identifiers

NCT01956435

CR-13-151

Details and patient eligibility

About

This pilot study will consist of 10 adult subjects with symmetric idiopathic guttate hypomelanosis on the lower legs. Subjects will be randomized to which extremity (right or left) will be treated. Treatments with the Xtrac Excimer laser will be performed twice weekly for 12 weeks using the typical vitiligo protocol. Our goal is to determine the effectiveness of excimer laser for repigmentation of idiopathic guttate hypomelanosis. Effectiveness will be graded by the blinded observer scale via photographic comparisons and will be graded by subject via survey every 4 weeks.

Full description

Methods: This pilot study will consist of 10 adult subjects with symmetric IGH on the lower legs. After enrollment, 5 lesions of IGH on each leg will be selected by either Dr. Jennifer Gordon or Dr. Ammar Ahmed and marked. Subjects will be randomized to which extremity (right or left) will be treated. Treatments with the Xtrac Excimer laser (wavelength of 308nm) will be performed twice weekly for 12 weeks using the typical vitiligo protocol (see Appendix C). Photographs of both extremities will be taken prior to initial treatment and then every 4 weeks. The photographs will be analyzed by two separate, blinded dermatologists and rated on improvement from baseline using the following scale: 1= worsening of IGH; 2= no improvement (IGH remained stable); 3= mild improvement of IGH (some repigmentation on <50% IGH); 4= moderate improvement (some repigmentation on >50% or full repigmentation on <75% IGH); 5= full repigmentation on >75% IGH (see Appendix A). Subjects will also be asked to complete this survey subjectively every 4 weeks. Internal control will be represented by the marked lesions on the non-treated extremity of each patient. Control versus treatment groups will be statistically compared; however, due to the limited number of patient in this pilot study, a descriptive trend analysis will likely be completed. Subjects will be compensated $10 per visit (totaling $250). If a subject withdraws early from the study, they will be compensated for every completed visit. The 25th visit will consist of final photographs and surveys, and will not include treatment.

Statistical Analysis: The main outcomes to be collected are the improvement of IGH from baseline at weeks 4, 8 and 12 by the blinded dermatologists and by the subjects. Subjects will be stratified by Fitzpatrick skin type for analysis as well.

Enrollment

6 patients

Sex

All

Ages

18+ years old

Volunteers

Accepts Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria

Diagnosis of idiopathic guttate hypomelanosis on the bilateral lower extremities with at least 5 lesions on each leg that are overall symmetric as determined by study personnel
Patients must be 18 years or older
Patients may be from any ethnicity but are required to be English-speakers
Patients must provide written informed consent to participate in the study

Exclusion Criteria

Patients with pre-existing dermatological condition that is exacerbated by ultraviolet radiation
Non-English speakers
Patients taking medications known to have potential phototoxic reactions
Use of Ultraviolet tanning beds, Ultraviolet-A, Ultraviolet- B or excimer therapy within the previous 3 months on the lower extremities
Current or previous treatment within the past 3 months specifically for IGH
Pregnancy or pregnancy within the past 3 months (this can cause changes in pigmentation)