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Table 1 Levels of immunoglobulin and blood and urinary BK virus in HSCT recipient

From: Polyclonal gammopathy after BKV infection in HSCT recipient: a novel trigger for plasma cells replication?

Day post transplant

IgG* mg/dl

IgA mg/dl

IgM mg/dl

BKV viruria (cp/ml)

BKV viremia (cp/ml)

Pre-BMT

320

4

2

1,9×1010

8,3×104

+15

305

3

0

1,8×109

4,4×105

+94

1324

9

15

4,5×1010

1,9×106

+98

1166

8

23

3,0×109

4,2×105

+107

784

6

185

8,0×108

3,7×105

+114

1009

5

304

8,2×107

1,1×105

+125

882

7

393

7,9×107

5,4×103

+127

617

5

269

1,9×108

2,0×104

+134

845

7

189

9,0×107

2,9×104

+142

960

123

180

2,0×107

2,0×105

+150

657

70

248

Not performed

Not performed

  1. The table shows IgG, IgM, IgA levels after BKV reactivation, three months after transplantation in a 15-y-old female suffering from common B-cell acute lymphoblastic leukemia. IgM levels rise concurrently to BKV viremia and viruria. *IgG immunoglobulins therapy has been administered.