Table 1. Frequencies of amino acids at site 173 of Env-gp70 differ in breakthrough infections in the presence of the DPB1*13 allele.
Vaccine (n = 44)Fisher’s PPlacebo (n = 66)Fisher’s P
DPB1*13+DPB1*13DPB1*13+DPB1*13
H1738150.0049190.57
H173X*021929
DPB1*13+ (n = 26)DPB1*13 (n = 84)
H173H173XH173H173X
Vaccine800.0215191.00
Placebo992129

*X designates amino acid residues other than histidine (H) at position 173.