Table 1.

Lewis, sex, and A1/A2 subgroup on platelet A antigen expression



Group A subtype (A1/A2)

Donor characteristics
All group A
P*


A1
P*


A2
A1vs A2P*
Total no. (%)   131 (100)      105 (80)      26 (20)   —  
Sex, no. (%)           
Male   68 (52)  NS     55 (81)  NS     13 (19)   NS  
Female   63 (48)      50 (79)      13 (21)   NS  
Age, y, X ± SD  39.2 ± 11.9      38.7 ± 11.6      36.7 ± 10.0   NS  
Male   39.3 ± 10.2  NS     38.7 ± 9.80  NS     36.3 ± 7.50   NS  
Female   39.4 ± 13.7      38.7 ± 13.3      39.0 ± 12.3   NS  
Lewis type, no. (%)           
Le (b+)   84 (64)  NS     66 (63)  NS     18 (69)   NS  
Le (b−)   47 (36)      39 (37)      8 (31)   NS  
HPA + donors (%)  100 (76)      99 (94)      1 (4)   <.0001  
No. Le (b+)   62 (62)  NS     61 (62)  NS     1   —  
No. Le (b—)   38 (38)      38 (38)      0   —  
HPA - donors (%)  31 (24)      6 (6)      25 (96)   <.0001  
No. Le (b+)   22 (71)  NS     5 (83)  NS     17 (68)   —  
No. Le (b−)   9 (29)      1 (17)      8 (32)   —  
%HPA, X ± SD  32.1 ± 21.7      39.5 ± 17.6      2.3 ± 1.9   <.0001  
Le (b+)   28.1 ± 19.5  .006     35.1 ± 15.8  .001     2.4 ± 2.1   <.0001  
Le (b−)   39.5 ± 23.7      47.1 ± 18.1      2.2 ± 1.6   <.0001  
Female, X ± SD  34.8 ± 24.3      43.3 ± 19.9      2.6 ± 2.2   <.0001  
Le (b+)   29.1 ± 23.0  .008     43.0 ± 15.1  .05     2.8 ± 2.4   <.0001  
Le (b−)   45.4 ± 22.2   .001  .0003   51.3 ± 16.0   .002  .0002   1.9 ± 1.4   <.0001  
           
Male, X ± SD  29.4 ± 19.0      36.4 ± 19.9      2.1 ± 1.7   <.0001  
Le (b+)   27.7 ± 16.7      34.8 ± 10.1  .01     1.9 ± 1.7   <.0001  
Le (b−)   34.2 ± 23.5      44.2 ± 17.0      2.4 ± 1.9   <.0001  
Western, A-GP (%)*§  67 (100)   N = 58.000001    33      10   
No. A-GP+   53 (79)      33      0   <.00001  
No. A-GP−   14 (21)      0      10   —  
HPTLC, A-GSL (%)*  65 (100)      35      10   —  
No. A-GSL+   49 (75)      33      2   <.00001  
No. A-GSL−   16 (25)      2      8   —  
A-GSL + samples (%)           
A-6 and A-7/8   40 (82)      26      0   <.00001  
A-6 only   7 (14)      5      2   .04  
A-8 only
 
2 (4)
 

 

 

 
2
 

 

 

 
0
 
.03
 


Group A subtype (A1/A2)

Donor characteristics
All group A
P*


A1
P*


A2
A1vs A2P*
Total no. (%)   131 (100)      105 (80)      26 (20)   —  
Sex, no. (%)           
Male   68 (52)  NS     55 (81)  NS     13 (19)   NS  
Female   63 (48)      50 (79)      13 (21)   NS  
Age, y, X ± SD  39.2 ± 11.9      38.7 ± 11.6      36.7 ± 10.0   NS  
Male   39.3 ± 10.2  NS     38.7 ± 9.80  NS     36.3 ± 7.50   NS  
Female   39.4 ± 13.7      38.7 ± 13.3      39.0 ± 12.3   NS  
Lewis type, no. (%)           
Le (b+)   84 (64)  NS     66 (63)  NS     18 (69)   NS  
Le (b−)   47 (36)      39 (37)      8 (31)   NS  
HPA + donors (%)  100 (76)      99 (94)      1 (4)   <.0001  
No. Le (b+)   62 (62)  NS     61 (62)  NS     1   —  
No. Le (b—)   38 (38)      38 (38)      0   —  
HPA - donors (%)  31 (24)      6 (6)      25 (96)   <.0001  
No. Le (b+)   22 (71)  NS     5 (83)  NS     17 (68)   —  
No. Le (b−)   9 (29)      1 (17)      8 (32)   —  
%HPA, X ± SD  32.1 ± 21.7      39.5 ± 17.6      2.3 ± 1.9   <.0001  
Le (b+)   28.1 ± 19.5  .006     35.1 ± 15.8  .001     2.4 ± 2.1   <.0001  
Le (b−)   39.5 ± 23.7      47.1 ± 18.1      2.2 ± 1.6   <.0001  
Female, X ± SD  34.8 ± 24.3      43.3 ± 19.9      2.6 ± 2.2   <.0001  
Le (b+)   29.1 ± 23.0  .008     43.0 ± 15.1  .05     2.8 ± 2.4   <.0001  
Le (b−)   45.4 ± 22.2   .001  .0003   51.3 ± 16.0   .002  .0002   1.9 ± 1.4   <.0001  
           
Male, X ± SD  29.4 ± 19.0      36.4 ± 19.9      2.1 ± 1.7   <.0001  
Le (b+)   27.7 ± 16.7      34.8 ± 10.1  .01     1.9 ± 1.7   <.0001  
Le (b−)   34.2 ± 23.5      44.2 ± 17.0      2.4 ± 1.9   <.0001  
Western, A-GP (%)*§  67 (100)   N = 58.000001    33      10   
No. A-GP+   53 (79)      33      0   <.00001  
No. A-GP−   14 (21)      0      10   —  
HPTLC, A-GSL (%)*  65 (100)      35      10   —  
No. A-GSL+   49 (75)      33      2   <.00001  
No. A-GSL−   16 (25)      2      8   —  
A-GSL + samples (%)           
A-6 and A-7/8   40 (82)      26      0   <.00001  
A-6 only   7 (14)      5      2   .04  
A-8 only
 
2 (4)
 

 

 

 
2
 

 

 

 
0
 
.03
 

— indicates not applicable.

*

Chi-square.

Fisher exact test.

Flow cytometry donors only.

§

A-active platelet glycoproteins by Western blot.

A-active neutral GSLs by HPTLC-immunostaining. A-6 and A-7/8 refer to the 2 major A-GSL bands identified in platelets (Figure 4D).

Chi-square of HPTLC and Western blot results in 58 donors.

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