Table 5 Evaluation of hematologic parameters indicating myelosuppression in patients with poor/intermediate and normal/rapid CYP2B6 function.

From: Association between CYP2B6 genetic variability and cyclophosphamide therapy in pediatric patients with neuroblastoma

 

Poor/intermediate CYP2B6 metabolizers

Normal/rapid CYP2B6 metabolizers

P value

Lymphocytes (N = 47)

0.015

 Grade 0

5.6% (1/18)

0.0% (0/29)

 

 Grade 1/2

22.2% (4/18)

3.4% (1/29)

 

 Grade 3

72.2% (13/18)

96.6% (28/29)

 

Platelets (N = 50)

0.018

 Grade 0

35.0% (7/20)

10.0% (3/30)

 

 Grade 1/2

15.0% (3/20)

10% (3/30)

 

 Grade 3/4

50.0% (10/20)

80.0% (24/30)

 

Neutrophils (N = 49)

0.306

 Grade 0

0.0% (0/19)

0.0% (0/30)

 

 Grade 1/2

10.5% (2/19)

3.3% (1/30)

 

 Grade 3/4

89.5% (17/19)

96.7% (29/30)

 

Monocytes (N = 45)

0.030

 > LLN*

27.8% (5/18)

3.7% (1/27)

 

 < LLN*

72.2% (13/18)

96.3% (26/27)

 

Eosinophils (N = 45)

0.449

 > LLN*

27.8% (5/18)

14.8% (4/27)

 

 < LLN*

72.2% (13/18)

85.2% (23/27)

 

Red blood cells (N = 50)

0.489

 > LLN*

15.0% (3/20)

26.7% (8/30)

 

 < LLN*

85.0% (17/20)

73.3% (22/30)

 
  1. Significant values are in bold.
  2. *LLN: lower limit in normal reference population at the same age.