Incidence and prevalence of NMOSD in Australia and New Zealand.

Published

Journal Article

OBJECTIVES:We have undertaken a clinic-based survey of neuromyelitis optica spectrum disorders (NMOSDs) in Australia and New Zealand to establish incidence and prevalence across the region and in populations of differing ancestry. BACKGROUND:NMOSD is a recently defined demyelinating disease of the central nervous system (CNS). The incidence and prevalence of NMOSD in Australia and New Zealand has not been established. METHODS:Centres managing patients with demyelinating disease of the CNS across Australia and New Zealand reported patients with clinical and laboratory features that were suspicious for NMOSD. Testing for aquaporin 4 antibodies was undertaken in all suspected cases. From this group, cases were identified who fulfilled the 2015 Wingerchuk diagnostic criteria for NMOSD. A capture-recapture methodology was used to estimate incidence and prevalence, based on additional laboratory identified cases. RESULTS:NMOSD was confirmed in 81/170 (48%) cases referred. Capture-recapture analysis gave an adjusted incidence estimate of 0.37 (95% CI 0.35 to 0.39) per million per year and a prevalence estimate for NMOSD of 0.70 (95% CI 0.61 to 0.78) per 100 000. NMOSD was three times more common in the Asian population (1.57 (95% CI 1.15 to 1.98) per 100 000) compared with the remainder of the population (0.57 (95% CI 0.50 to 0.65) per 100 000). The latitudinal gradient evident in multiple sclerosis was not seen in NMOSD. CONCLUSIONS:NMOSD incidence and prevalence in Australia and New Zealand are comparable with figures from other populations of largely European ancestry. We found NMOSD to be more common in the population with Asian ancestry.

Full Text

Cited Authors

  • Bukhari, W; Prain, KM; Waters, P; Woodhall, M; O'Gorman, CM; Clarke, L; Silvestrini, RA; Bundell, CS; Abernethy, D; Bhuta, S; Blum, S; Boggild, M; Boundy, K; Brew, BJ; Brown, M; Brownlee, WJ; Butzkueven, H; Carroll, WM; Chen, C; Coulthard, A; Dale, RC; Das, C; Dear, K; Fabis-Pedrini, MJ; Fulcher, D; Gillis, D; Hawke, S; Heard, R; Henderson, APD; Heshmat, S; Hodgkinson, S; Jimenez-Sanchez, S; Killpatrick, T; King, J; Kneebone, C; Kornberg, AJ; Lechner-Scott, J; Lin, M-W; Lynch, C; Macdonell, R; Mason, DF; McCombe, PA; Pender, MP; Pereira, JA; Pollard, JD; Reddel, SW; Shaw, C; Spies, J; Stankovich, J; Sutton, I; Vucic, S; Walsh, M; Wong, RC; Yiu, EM; Barnett, MH; Kermode, AG; Marriott, MP; Parratt, JDE; Slee, M; Taylor, BV; Willoughby, E; Wilson, RJ; Vincent, A; Broadley, SA

Published Date

  • August 2017

Published In

Volume / Issue

  • 88 / 8

Start / End Page

  • 632 - 638

PubMed ID

  • 28550069

Pubmed Central ID

  • 28550069

Electronic International Standard Serial Number (EISSN)

  • 1468-330X

International Standard Serial Number (ISSN)

  • 0022-3050

Digital Object Identifier (DOI)

  • 10.1136/jnnp-2016-314839

Language

  • eng