Neutrophil (NEU) counts by Duffy status. (A) Histograms of ANC distributions for all NEU measurements. The ticked line indicates the median values for each group. (B) Histograms of ANC distributions for 2785 individuals with at least 2 low NEU counts (ANC < 1.5 × 10³/μL) with and without the homozygous rs2814778-CT SNP. (C) Horizontal bar chart of low ANC binned by clinical classifications: mild (1.0 × 10³/μL < ANC < 1.5 ×10³/μL), moderate (0.5 × 10³/μL < ANC < 1.0 × 10³/μL), and severe (ANC < 0.5 × 10³/μL).⁴⁸