Table 1.

Summary of HLA-Cw1 serotype frequency, positivity, and samples sizes of patients with psoriasis and non-psoriatic controls in different populations

References	Country	HLA-Cw1 serotype frequency in patients (%)	HLA-Cw1 serotype frequency in controls (%)	HLA-Cw1 positivity in patients (%)	HLA-Cw1 positivity in controls (%)	Number of patients	Number of controls
Cai et al. [11]	Southern China	12.7	16.8			3657	5257
Cardili et al. [88]	Brazil	1.6	1.7			125	202
Chiu et al. [54]	Taiwan	27	24			398	400
Choonhakarn et al. [13]	Thailand	26	16			140	300
Cibulova et al. [89]	Czech Republic	6.4	7.1			153	99
Gonzalez et al. [90]	Spain			10	7.3	110	177
Kim et al. [91]	South Korea	22.6	21.4			84	98
Nakagawa et al. [92]	Japan			14	27	56	100
Onsun et al. [14]	Turkey	8.1	2.1			150	145
Shaiq et al. [16]	Pakistan	4.73	2.90			351	593
Shawkatová et al. [93]	Slovakia	4.42	6.07			147	107
Szczerkowska Dobosz et al. [94]	Poland			2.4	5	41	80
Tiilikainen et al. [10]	Finland			13.5	14.3	37	483
Tsai et al. [9]	Taiwan	22.14	19.95			136	426
Zhang et al. [95]	China	7.5	10.1			166	204