Human genetic defects of sphingolipid synthesis

Ceramide ;

peripheral neuropathy

Glycosphingolipid ;

peripheral neuropathy;

Ichthyosis ;


Thierry LevadeTeam Melasphinx – Ceramide metabolism in melanoma: from basic mechanisms to immunotherapy

Sphingolipids are ubiquitous lipids, present in the membranes of all cell types, the stratum corneum and the circulating lipoproteins. Autosomal recessive as well as dominant diseases due to disturbed sphingolipid biosynthesis have been identified, including defects in the synthesis of ceramides, sphingomyelins and glycosphingolipids. In many instances, these gene variants result in the loss of catalytic function of the mutated enzymes. Additional gene defects implicate the subcellular localization of the sphingolipid-synthesizing enzyme, the regulation of its activity, or even the function of a sphingolipid-transporter protein. The resulting metabolic alterations lead to two major, non-exclusive types of clinical manifestations: a neurological disease, more or less rapidly progressive, associated or not with intellectual disability, and an ichthyotic-type skin disorder. These phenotypes highlight the critical importance of sphingolipids in brain and skin development and homeostasis. The present article reviews the clinical symptoms, genetic and biochemical alterations, pathophysiological mechanisms and therapeutic options of this relatively novel group of metabolic diseases.

Discover The published article

J Inherit Metab Dis. 2024 May 5.doi: 10.1002/jimd.12745. Online ahead of print.
Human genetic defects of sphingolipid synthesis
Patricia Dubot, Frédérique Sabourdy, Thierry Levade

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  • Université Toulouse III – Paul Sabatier
  • Fondation du CHU Sainte-Justine
  • Institut National de la Santé et de la Recherche Médicale (INSERM)
Centre de Recherches en Cancérologie de Toulouse

Centre de Recherches contre le Cancer de Toulouse (Oncopole)

Toulouse - FR

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