TY - JOUR T1 - ANti—liver-kidney microsome type 1 antibodies in lichen planus AU - Divano M, Parodi A, Rebora AA Y1 - 1992/07/01 N1 - 10.1001/archderm.1992.01680170127022 JO - Archives of Dermatology SP - 991 EP - 991 VL - 128 IS - 7 N2 - To the Editor.—  The recent description of a patient with lichen planus (LP) and anti—liver-kidney microsome (LKM)— positive chronic active hepatitis1 prompted us to verify the possible prevalence of anti-LKM type 1 (anti-LKM1) antibody in a population of patients with LP with and without chronic liver disorder.Forty-six patients with LP (25 women and 20 men) were recruited retrospectively. Sixteen had been diagnosed as having chronic liver disorder on the basis of persistent alterations in at least three of the following serum chemistry results: alanine aminotransferase, aspartate aminotransferase, γ-glutamyltransferase, alkaline phosphatase, and bilirubin.The presence of anti-LKM1 antibodies was determined by indirect immunoflourescence, using rat kidney and liver as substrates, and by counterimmunoelectrophoresis, using rat liver as a source of antigen.2No anti-LKM1 antibodies were found in any patient, suggesting that their occurrence in patients with LP is only occasional. In the case reported by Cottoni and coworkers, SN - 0003-987X M3 - doi: 10.1001/archderm.1992.01680170127022 UR - http://dx.doi.org/10.1001/archderm.1992.01680170127022 ER -