Journal
JOURNAL OF DERMATOLOGY
Volume 49, Issue 4, Pages 463-468Publisher
WILEY
DOI: 10.1111/1346-8138.16281
Keywords
AQP5; differentiation; palmoplantar keratoderma Bothnia type; proliferation; TRPV4
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Funding
- Inner Mongolia Science and Technology Plan [2019GG082]
- National Nature Science Foundation of China [81874239, 82073422]
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Palmoplantar keratoderma Bothnia type (PPKB) is caused by AQP5 pathogenic variants. The mechanisms of this disease and the genotype-phenotype correlation are still not fully understood. We report two pedigrees with PPKB caused by a recurrent variant c.367A>T and a novel variant c.530T>A in the AQP5 gene, respectively. We also found that there seemed to be no significant genotype-phenotype correlation of this disease. Moreover, the patient's epidermis had strong proliferation and immature differentiation potential, recognizing the possible important role of TRPV4 in the pathogenesis of PPKB.
Palmoplantar keratoderma Bothnia type (PPKB) is caused by AQP5 pathogenic variants. The mechanisms of this disease and the genotype-phenotype correlation are still not fully understood. We report two pedigrees with PPKB caused by a recurrent variant c.367A>T and a novel variant c.530T>A in the AQP5 gene, respectively. We also summarize the cases with AQP5 variants identified, and found that there seemed to be no significant genotype-phenotype correlation of this disease. Moreover, we noticed that the epidermis of the patient had strong proliferation and immature differentiation potential as well as recognizing the possible important role of TRPV4 in the pathogenesis of PPKB.
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