Pi MZ phenotype and an increased prevalence of reported psoriasis in a community survey

Area of Science:

• Immunodermatology
• Genetics
• Epidemiology

Background:

• Psoriasis is a chronic inflammatory skin condition with complex etiology.
• Alpha 1-antitrypsin (alpha 1-AT) deficiency, particularly the MZ phenotype, is associated with various health issues.
• Previous studies suggest a potential link between alpha 1-AT deficiency and psoriasis.

Purpose of the Study:

• To investigate the association between alpha 1-antitrypsin (alpha 1-AT) deficiency and the reported incidence of psoriasis in a community-based adult population.

Main Methods:

• A community survey identified adults reporting a history of psoriasis.
• Alpha 1-antitrypsin (alpha 1-AT) phenotyping was performed on participants.
• The incidence of psoriasis was compared between individuals with and without the MZ phenotype.

Main Results:

• Out of 953 adults surveyed, 40 reported psoriasis; 8 were physician-documented.
• The MZ phenotype was identified in 35 individuals, 11.4% of whom reported psoriasis.
• Among 918 non-MZ individuals, 3.9% reported psoriasis, yielding a relative incidence of 3.2 (p < 0.05).

Conclusions:

• The findings support an association between moderate alpha 1-antitrypsin (alpha 1-AT) deficiency and psoriasis.
• Individuals with the MZ phenotype exhibit a significantly higher relative incidence of psoriasis.
• Further research is warranted to elucidate the underlying mechanisms connecting alpha 1-AT deficiency and psoriasis.