In the univariate regression analysis of neutropenia in the 12th month after the end of the last chemotherapy, the baseline levels of ANC before treatment (p < 0.001), different G-CSF types (p1 = 0.053, p2 = 0.049), and molecular typing (p = 0.022) were statistically significant factors (p < 0.1) (Table 1). The gene discussed is CSF3; the disease is neutropenia.