Pretherapeutic clinical parameters associated with leukocytopenia, thrombocytopenia and any hematologic event were Hb (HR 0.66 [0.55–0.78], p < 0.001; HR 0.74 [0.62–0.88], p < 0.001 and HR 0.82 [0.73–0.93], p = 0.001, respectively) and PSA (HR 1.01 [1.00–1.01], p = 0.002; HR 1.01 [1.00–1.01], p = 0.012 and HR 1.01 [1.00–1.01], p < 0.001, respectively). Here, GSTM1 is linked to Thrombocytopenia.