Efficacy and Safety of Two Doses of Liarozole vs. Placebo for the Treatment of Lamellar Ichthyosis

Summary

Lamellar ichthyosis is a congenital disease of the skin with a generalized scaling. The primary activity of liarozole is considered to be the inhibition of the degradation of a substance called retinoic acid, which is the principal endogenous regulator of growth and differentiation of epithelial tissues in mammals. The current study intends to evaluate the efficacy and safety in patients with lamellar ichthyosis.

Timeline

Start

2006-01

Primary completion

2007-04

Completion

2007-04

Outcome

Missed primary endpoint

paper The primary efficacy variable did not reach statistical significance PMID 24102348 ↗

Publications

• Background Van Wauwe JP, Coene MC, Goossens J, Cools W, Monbaliu J. Effects of cytochrome P-450 inhibitors on the in vivo metabolism of all-trans-retinoic acid in rats. J Pharmacol Exp Ther. 1990 Jan;252(1):365-9.
• Background Van Wauwe J, Van Nyen G, Coene MC, Stoppie P, Cools W, Goossens J, Borghgraef P, Janssen PA. Liarozole, an inhibitor of retinoic acid metabolism, exerts retinoid-mimetic effects in vivo. J Pharmacol Exp Ther. 1992 May;261(2):773-9.
• Background Van Wauwe J, Coene MC, Cools W, Goossens J, Lauwers W, Le Jeune L, Van Hove C, Van Nyen G. Liarozole fumarate inhibits the metabolism of 4-keto-all-trans-retinoic acid. Biochem Pharmacol. 1994 Feb 11;47(4):737-41. doi: 10.1016/0006-2952(94)90137-6.
• Background Kang S, Duell EA, Kim KJ, Voorhees JJ. Liarozole inhibits human epidermal retinoic acid 4-hydroxylase activity and differentially augments human skin responses to retinoic acid and retinol in vivo. J Invest Dermatol. 1996 Aug;107(2):183-7. doi: 10.1111/1523-1747.ep12329579.
• Background Dockx P, Decree J, Degreef H. Inhibition of the metabolism of endogenous retinoic acid as treatment for severe psoriasis: an open study with oral liarozole. Br J Dermatol. 1995 Sep;133(3):426-32. doi: 10.1111/j.1365-2133.1995.tb02672.x.
• Background Berth-Jones J, Todd G, Hutchinson PE, Thestrup-Pedersen K, Vanhoutte FP. Treatment of psoriasis with oral liarozole: a dose-ranging study. Br J Dermatol. 2000 Dec;143(6):1170-6. doi: 10.1046/j.1365-2133.2000.03884.x.
• Background Bhushan M, Burden AD, McElhone K, James R, Vanhoutte FP, Griffiths CE. Oral liarozole in the treatment of palmoplantar pustular psoriasis: a randomized, double-blind, placebo-controlled study. Br J Dermatol. 2001 Oct;145(4):546-53. doi: 10.1046/j.1365-2133.2001.04411.x.
• Background Lucker GP, Heremans AM, Boegheim PJ, van de Kerkhof PC, Steijlen PM. Oral treatment of ichthyosis by the cytochrome P-450 inhibitor liarozole. Br J Dermatol. 1997 Jan;136(1):71-5.
• Vahlquist A, Blockhuys S, Steijlen P, van Rossem K, Didona B, Blanco D, Traupe H. Oral liarozole in the treatment of patients with moderate/severe lamellar ichthyosis: results of a randomized, double-blind, multinational, placebo-controlled phase II/III trial. Br J Dermatol. 2014 Jan;170(1):173-81. doi: 10.1111/bjd.12626.

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