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Letter to the editor| Volume 319, ISSUE 1-2, P171, August 15, 2012

Lack of response to rituximab therapy in patients with neuromyelitis optica: True non-responders or insufficient treatment?

  • Su-Hyun Kim
    Affiliations
    Department of Neurology, Research Institute and Hospital of National Cancer Center, 323 Ilsan street, Ilsandong-gu, Goyang-si, Gyeonggi-do, 410‐769, South Korea
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  • Ho Jin Kim
    Correspondence
    Corresponding author at: Department of Neurology, Research Institute and Hospital of National Cancer Center, 323 Ilsan street, Ilsandong-gu, Goyang-si, Gyeonggi-do, 410‐769, South Korea.
    Affiliations
    Department of Neurology, Research Institute and Hospital of National Cancer Center, 323 Ilsan street, Ilsandong-gu, Goyang-si, Gyeonggi-do, 410‐769, South Korea
    Search for articles by this author
      We read with great interest the article by Lindsey et al. entitled “Variable results after rituximab in neuromyelitis optica [
      • Lindsey J.W.
      • Meulmester K.M.
      • Brod S.A.
      • Nelson F.
      • Wolinsky J.S.
      Variable results after rituximab in neuromyelitis optica.
      ].” The authors described the lack of response to rituximab in six of nine patients with neuromyelitis optica (NMO), which differed from the positive outcomes found by previous studies [
      • Kim S.H.
      • Kim W.
      • Li X.F.
      • Jung I.J.
      • Kim H.J.
      Repeated treatment with rituximab based on the assessment of peripheral circulating memory B cells in patients with relapsing neuromyelitis optica over 2 years.
      ,
      • Pellkofer H.L.
      • Krumbholz M.
      • Berthele A.
      • Hemmer B.
      • Gerdes L.A.
      • Havla J.
      • et al.
      Long-term follow-up of patients with neuromyelitis optica after repeated therapy with rituximab.
      ,
      • Bedi G.S.
      • Brown A.D.
      • Delgado S.R.
      • Usmani N.
      • Lam B.L.
      • Sheremata W.A.
      Impact of rituximab on relapse rate and disability in neuromyelitis optica.
      ,
      • Jacob A.
      • Weinshenker B.G.
      • Violich I.
      • mclinskey N.
      • Krupp L.
      • Fox R.J.
      • et al.
      Treatment of neuromyelitis optica with rituximab: retrospective analysis of 25 patients.
      ,
      • Cree B.A.
      • Lamb S.
      • Morgan K.
      • Chen A.
      • Waubant E.
      • Genain C.
      An open label study of the effects of rituximab in neuromyelitis optica.
      ]. However, we are concerned about whether these patients were true non-responders or whether they were actually treated insufficiently.
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