In contrast, high baseline RBC count (≥3.3 × 106 cells/μL), high baseline hematocrit level (≥35%), high baseline hemoglobin level (≥11.6 g/dL), and BRCA1/2 mutation were significantly associated with the onset of grade ≥1 anemia (adjusted OR, 2.53; 95% CI, 1.02–6.49, P = 0.047, adjusted OR, 2.90; 95% CI, 1.11–8.20, P = 0.035, adjusted OR, 5.78; 95% CI, 2.10–18.19, P = 0.001, and adjusted OR, 2.74; 95% CI, 1.08–7.32, P = 0.037, respectively) (Table 3). This evidence concerns the gene BRCA1 and anemia.