LOX was the only type of CH to display both a positive genetic correlation (ρ = 0.17, P = 8.40 × 10−5; Fig. 2, Supplementary Data 1) and a positive phenotypic association with lymphocyte count (T-statistic= 23.96, P = 9.11 × 10−127) (Fig. 3, Supplementary Data 4). This evidence concerns the gene LOX and cyclic hematopoiesis.