Klotho and vitamin D in multiple sclerosis: an Italian study

Area of Science:

• Genetics
• Immunology
• Endocrinology

Background:

• Low vitamin D levels are a known risk factor for autoimmune diseases like multiple sclerosis (MS).
• MS pathogenesis involves genetic and environmental factors, including vitamin D metabolism.
• Polymorphisms in vitamin D homeostasis genes are linked to hypovitaminosis D, but Klotho's role is unexplored.

Purpose of the Study:

• To investigate the association between Klotho gene variants (rs1207568, rs9536314) and serum 25(OH)D3 levels in MS.
• To evaluate the influence of these Klotho variants on MS risk and disease progression.

Main Methods:

• Serum 25(OH)D3 levels were measured using high-performance liquid chromatography.
• Genotyping of Klotho single nucleotide polymorphisms (SNPs) was performed via real-time polymerase chain reaction.
• The study included 107 MS patients and 133 healthy controls.

Main Results:

• No significant differences in allelic or genotypic frequencies of Klotho SNPs were observed between MS patients and controls.
• A trend suggested lower serum 25(OH)D3 levels in MS patients with the rs1207568 A allele (mutant) compared to GG homozygotes (p=0.07).

Conclusions:

• The study did not find evidence for Klotho gene variants contributing to genetic susceptibility to MS.
• The investigated Klotho polymorphisms do not appear to play a significant role in MS development or vitamin D status.