Netherton syndrome (NS) is a rare skin disorder involving the skin, hair, and immune system. Pathological manifestations are due to unopposed kallikrein peptidase activity because of a SPINK5 gene deficiency. In their article, Gouin et al. explore the role of kallikrein 14 in the stratum granulosum, defining it as an important player implicated in the pathogenesis of NS hair shaft anomalies.
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