Lewis phenotype | No. (%) of subjects in indicated study group^{a} | ||
---|---|---|---|

BC children | BC mothers | Control children | |

Le(a−b+)^{b} | 105 (58.6) | 99 (57.9) | 66 (59.0) |

Le(a+b−) | 47 (26.3) | 42 (24.6) | 29 (25.9) |

Le(a−b−) | 27 (15.1) | 30 (17.5) | 17 (15.1) |

↵

*a*BC children were >4 years old (*n*= 179); BC mothers were >20 years old (*n*= 171); and the children in the control group were <24 months old (*n*= 112).↵

*b*A total of 17/66 of the subjects were found to have the Le(a+b+) phenotype using the RBC test but were Le(a−b+) using the saliva test. They have been included in the Le(a−b+) group since RBC expression of the Le(a+b+) phenotype eventually develops into Le(a−b+) later in life (9).