Japan Psoriasis Association

The Japan Psoriasis Patients Association (JPA) was organized by patient groups across the country.

690.23 thousand

people living with psoriatic disease in Japan

Research has shown that Japanese patients with psoriasis have different genetic markers compared to Western patients. For example, certain alleles like HLA-Cw6, which is strongly associated with psoriasis in European populations, are less common in Japanese patients. Instead, other alleles such as HLA-Cw1 and HLA-Cw14 are more frequently observed .

Psoriasis is common among middle-aged men and affect about 1 in every 300 people in Japan. Patients with psoriasis are 65% male.