Clinical Characteristics of Patients with Spondyloarthritis in Japan in Comparison with Other Regions of the World.
Mitsumasa KishimotoKazuki YoshidaNaomi IchikawaHisashi InoueYuko KanekoTaku KawasakiKazuo MatsuiMitsuhiro MoritaMasei SudaKurisu TadaNaoho TakizawaNaoto TamuraAtsuo TaniguchiYoshinori TaniguchiShigeyoshi TsujiYoichiro HajiRyo RokutandaHaruyuki YanaokaPeter P CheungJieruo GuTae Hwan KimShue-Fen LuoMasato OkadaClementina López MedinaAnna MoltoMaxime DougadosShigeto KobayashiDésirée van der HeijdeTetsuya TomitaPublished in: The Journal of rheumatology (2019)
In our study, there was a more substantial number of peripheral SpA cases observed in Japan compared to other parts of Asia and other regions of the world. Aside from ethnic differences, increasing recognition of PsA in Japan, as well as a potential underdiagnosis of axSpA due to the insufficient use of HLA-B27 testing, may partly explain regional discrepancies.