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Table 5 Immunoglobulin class response patterns (ICRPs) in group I

From: Cerebrospinal fluid findings in COVID-19: a multicenter study of 150 lumbar punctures in 127 patients

 

Units

Total

 ≤ 14 d

 > 14 d

Acute B/SC subgroup

Acute PN/CN/H subgroup

a. Based on QIg > Qlim(Ig)

 3-class reaction

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

0/58 (0%)

0/12 (0%)

 2-class reaction

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

0/58 (0%)

0/12 (0%)

  IgG + IgM

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

  

  IgG + IgA

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

  

  IgM + IgA

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

  

 1-class reaction

Samples

6/99 (6.1%)

3/71 (4.2%)

1/19 (5.3%)

3/58 (5.2%)

0/12 (0%)

  Only IgG

Samples

1/99 (1%)

1/71 (1.4%)

0/19 (0%)

  

  Only IgM

Samples

4/99 (4%)

2/71 (2.8%)

0/19 (0%)

  

  Only IgA

Samples

1/99 (1%)

0/71 (0%)

1/19 (5.3%)

  

b. Based on Ig-IF > 10%

 3-class reaction

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

0/58 (0%)

0/12 (0%)

 2-class reaction

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

0/58 (0%)

0/12 (0%)

  IgG + IgM

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

  

  IgG + IgA

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

  

  IgM + IgA

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

  

 1-class reaction

Samples

5/99 (5.1%)

3/71 (4.2%)

0/19 (0%)

3/58 (5.2%)

0/12 (0%)

  Only IgG

Samples

1/99 (1%)

1/71 (1.4%)

0/19 (0%)

  

  Only IgM

Samples

4/99 (4%)

2/71 (2.8%)

0/19 (0%)

  

  Only IgA

Samples

0/99 (0%)

0/71 (0%)

0/19 (0%)

  
  1. ICRPs have been shown to be of differential diagnostic relevance in various neurological disorders [13, 14, 19, 20, 35]