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Efficacy of topical calcineurin inhibitors in lichen planus
Michael Samycia1, Andrew N Lin
1Faculty of Medicine and Dentistry, Division of Dermatology and Cutaneous Sciences, University of Alberta, Edmonton, AB.
Background:
Topical calcineurin inhibitors have been studied in many skin disorders, including lichen planus.
Objective:
To evaluate published reports of the use of topical calcineurin inhibitors in lichen planus.
Methods:
We searched PubMed, Ovid/Cochrane, and Embase using the keywords "tacrolimus," "pimecrolimus," "topical calcineurin inhibitors," and "lichen planus. "
Results:
We examined 5 double-blind studies, 1 investigator-blinded study, 10 open prospective studies, 6 retrospective studies, and 28 case reports evaluating tacrolimus or pimecrolimus for oral, vulvovaginal, and cutaneous lichen planus.
Conclusions:
Strong evidence (double-blind and open studies) supports the use of topical tacrolimus ointment in oral lichen planus, with efficacy at least equal to topical clobetasol propionate 0.05% ointment. Treatment of oral lichen planus with topical tacrolimus ointment can result in demonstrable blood tacrolimus levels, but without clinically significant adverse events. Strong evidence (double-blind and open studies) supports the use of topical pimecrolimus 1% cream in oral lichen planus, with efficacy equal to that of topical triamcinolone acetonide 0.1% paste. For vulvovaginal lichen planus, pimecrolimus was superior to placebo in one double-blind study, and tacrolimus was effective in open studies. Only case reports support the efficacy of topical calcineurin inhibitors in cutaneous lichen planus.
