Reflections on the prevalence of human leukocyte antigen-B27 and human leukocyte antigen-B51 co-occurrence in patients with spondylarthritis

Table 1 Patients with spondylarthritis and human leukocyte antigen-B51-positivity

Ref.	Sample	Sample	Age in yr/male, n	Oral ulcer, n	Genital ulcer, n	Uveitis, n	Peripheral arthritis, n	Axial arthritis, n	Skin lesion, n	Gastrointestinal involvement, n	Cardiac involvement, n	Urethritis, n	HLA B27+
Jung et al[5]	16	16	39.5 ± 11.6/11	6	0	2	10	0	4	0	0	0	Y
Chang et al[2]	3	3	25-55/3	3	3	2	2	2	2	0	0	0	Y
Taniguchi et al[3]	1	1	32/1	0	0	1	1	0	0	0	0	1	N
Shimamoto et al[4]	1	1	28/1	0	0	1	1	0	0	0	0	1	N
Total (%)	21 (100)	21 (100)	25-82	9 (42.8)	1 (4.7)	7 (33.3)	14 (66.6)	4 (19.0)	6 (28.5)	0	0	2 (9.5)	19 (90.4)

HLA: Human leukocyte antigen; Y: The patient has the characteristic; N: The patient does not have the characteristic.