Calcium channel autoimmunity: Cerebellar ataxia and lambert-eaton syndrome coexisting

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3 Scopus citations


Introduction: Neuronal calcium channel antibodies are a biomarker of Lambert-Eaton syndrome (LES) and cerebellar ataxia. We have encountered several patients with LES and cerebellar ataxia coexisting, and we sought to further define this association. Methods: We reviewed records of patients at our institution with a diagnosis of "Lambert-Eaton syndrome" and "cerebellar ataxia." Results: Seventeen patients were identified with LES and ataxia. Presenting symptoms were weakness (8), concurrent weakness and ataxia (4), ataxia (4), and other (1). Nine patients had small-cell lung carcinoma, 3 of whom had survival greater than 100 months. Immunotherapy responses were best among patients without cancer. Nine of 17 (53%) patients were alive at last follow-up (median survival 62 months; range, 8-240). Discussion: Calcium channel autoimmunity should be considered in patients with coexisting cerebellar ataxia and myasthenic weakness. Affected patients may survive small-cell carcinoma or have immunotherapy-responsive neurological symptoms.

Original languageEnglish (US)
JournalMuscle and Nerve
StateAccepted/In press - Jan 1 2018


  • Ataxia
  • Calcium channel
  • Lambert-Eaton syndrome
  • Myasthenic syndrome
  • Paraneoplastic
  • Small-cell lung carcinoma

ASJC Scopus subject areas

  • Physiology
  • Clinical Neurology
  • Cellular and Molecular Neuroscience
  • Physiology (medical)

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