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Kister I, Kuesters G, Chamot E, et al. IV immunoglobulin confounds JC virus antibody serostatus determination. Neurol Neuroimmunol Neuroinflamm. 2014;1(3):e29doi: 10.1212/NXI.0000000000000029.
Kister, I., Kuesters, G., Chamot, E., Omari, M., Dontas, K., Yarussi, M., Subramanyam, M., & Herbert, J. (2014). IV immunoglobulin confounds JC virus antibody serostatus determination. Neurology(R) neuroimmunology & neuroinflammation, 1(3), e29. https://doi.org/10.1212/NXI.0000000000000029
Kister, Ilya, et al. "IV immunoglobulin confounds JC virus antibody serostatus determination." Neurology(R) neuroimmunology & neuroinflammation vol. 1,3 (2014): e29. doi: https://doi.org/10.1212/NXI.0000000000000029
Kister I, Kuesters G, Chamot E, Omari M, Dontas K, Yarussi M, Subramanyam M, Herbert J. IV immunoglobulin confounds JC virus antibody serostatus determination. Neurol Neuroimmunol Neuroinflamm. 2014 Sep 18;1(3):e29. doi: 10.1212/NXI.0000000000000029. eCollection 2014 Oct. PMID: 25340081; PMCID: PMC4204227.
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Neurol Neuroimmunol Neuroinflamm. 2014 Sep 18;1(3):e29. doi: 10.1212/NXI.0000000000000029. eCollection 2014 Oct.

IV immunoglobulin confounds JC virus antibody serostatus determination.

Neurology(R) neuroimmunology & neuroinflammation

Ilya Kister, Geoffrey Kuesters, Eric Chamot, Mirza Omari, Kim Dontas, Mary Yarussi, Meena Subramanyam, Joseph Herbert

Affiliations

  1. NYU Multiple Sclerosis Care Center (I.K., M.O., J.H.), Department of Neurology, NYU School of Medicine, New York, NY; Barnabas Multiple Sclerosis Care Center (I.K., M.Y., J.H.), Department of Medicine, Barnabas Medical Center, Livingston, NJ; Biogen Idec (G.K., M.S.), Cambridge, MA; Department of Epidemiology (E.C.), University of Alabama at Birmingham School of Public Health, Birmingham, AL; and Specialized Clinical Services (K.D.), Park Ridge, NJ.

PMID: 25340081 PMCID: PMC4204227 DOI: 10.1212/NXI.0000000000000029

Abstract

OBJECTIVE: To determine the impact of therapeutic infusion of IV immunoglobulin (IVIg) on John Cunningham virus antibody (JCV Ab) serostatus and level in serum.

METHODS: We carried out a retrospective analysis of serum levels of JCV Ab among STRATIFY-2 trial enrollees from 2 multiple sclerosis centers who were exposed to IVIg during the trial. For the subset of eligible patients, we estimated mean linear trends while on IVIg and after stopping IVIg with a linear mixed-effects model.

RESULTS: The JCV Ab seropositivity rate in the group of patients that was recently exposed to IVIg was 100%, which is significantly higher than in the IVIg-naive population (58%, p < 0.001). The seropositivity rate in the patient group with remote IVIg exposure was similar to that in the IVIg-naive population (67%, p = 0.68, Fisher exact test). The slope of the linear trend line after stopping IVIg decreased significantly by -0.310 units per 100 days (95% confidence interval, -0.611 to -0.008; p = 0.04).

CONCLUSIONS: Recent IVIg exposure is invariably associated with JCV Ab seropositivity. After stopping IVIg, JCV Ab levels tend to decrease with time, and seroreversion to innately Ab-negative status can occur.

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