Vitamin D Status in Distinct Types of Ichthyosis: Importance of Genetic Type and Severity of Scaling

Mi-Ran Kim, Vinzenz Oji, Frederic Valentin, Heiko Traupe, Jerzy-Roch Nofer, Ingrid Hausser, Hans Christian Hennies, Katja Eckl, Stefan A Wudy, Alberto Sánchez-Guijo, Laura Kerschke, Judith Fischer, Kira Süßmuth

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3 Citations (Scopus)


Data on vitamin D status of patients with inherited ichthyosis in Europe is scarce and unspecific concerning the genetic subtype. This study determined serum levels of 25-hydroxyvitamin D3 (25(OH)D3) in 87 patients with ichthyosis; 69 patients were additionally analysed for parathyroid hormone. Vitamin D deficiency was pronounced in keratinopathic ichthyosis (n = 17; median 25(OH)D3: 10.5 ng/ml), harlequin ichthyosis (n = 2;7.0 ng/ml) and rare syndromic subtypes (n = 3; 7.0 ng/ml). Vitamin D levels were reduced in TG1-proficient lamellar ichthyosis (n = 15; 8.9 ng/ml), TG1-deficient lamellar ichthyosis (n = 12; 11.7 ng/ml), congenital ichthyosiform erythroderma (n = 13; 12.4 ng/ml), Netherton syndrome (n = 7; 10.7 ng/ml) and X-linked ichthyosis (n = 8; 13.9 ng/ml). In ichthyosis vulgaris 25(OH)D3 levels were higher (n = 10; 19.7 ng/ml). Parathyroid hormone was elevated in 12 patients. Low 25(OH)D3 levels were associated with high severity of scaling (p = 0.03) implicating scaling as a risk factor for vitamin D deficiency. Thus, this study supports our recent guidelines for ichthyoses, which recommend screening for and substituting of vitamin D deficiency.

Original languageEnglish
Article numberadv00546
Number of pages6
JournalActa Dermato-Venereologica
Issue number9
Early online date16 Aug 2021
Publication statusPublished - 1 Sep 2021


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