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Table 2 Comparison of genotyping results and allele frequencies of the Duffy Blood Group System among blood donors and patients infected with P. vivax from Brazilian Amazon region.

From: Duffy blood group gene polymorphisms among malaria vivax patients in four areas of the Brazilian Amazon region

Duffy blood group system

Brazilian Amazon Region

 

Genotypes

Predicted Phenotype

Donors (n = 330)

Patients P. vivax (n = 312)

P

FYA/FYA

Fy(a+b-)

43

51

0,2644

FYA/FY X

Fy(a+b-)

3

5

0,4942

FYA/FYB-33

Fy(a+b-)

62

34

0,0055*

FYA/FYB

Fy(a+b+)

90

109

0,0404*

FYB/FYB

Fy(a-b+)

54

63

0,2208

FYB/FY X

Fy(a-b+)

6

4

0,7530

FY X / FY X

Fy(a-b-)

-

2

0,2358

FYB/FYB-33

Fy(a-b+)

54

42

0,3205

FYB-33/FYB-33

Fy(a-b-)

18

2

0,0003*

Alelles

 

Alelles Frequencies

 

FYA

 

0,365

0,400

0,2896

FYB

 

0,390

0,450

0,0351

FY X

 

0,014

0,021

0,5726

FYB-33

 

0,230

0,128

0,0000

  1. * Fisher's Exact Test.