GSTM1 and Thrombocytopenia: For severe thrombocytopenia, Hb (HR 0.48 [0.33–0.68], p < 0.001), PSA (HR 1.01 [1.00–1.01], p = 0.003), and [223Ra]Radiumdichloride pretreatment (HR 8.65 [1.79–33.36], p = 0.003) were identified as significant parameters.