The γ-H2AX-positive tumor cell area within the tumor region for mice treated with 195mPt-BP (1.66 ​± ​0.4%) was 4.6-fold higher than 195mPt-cisplatin (0.36 ​± ​0.1%), 11-fold higher than radio-inactive Pt-BP (0.15 ​± ​0.1%), and 32-fold higher than saline control (0.05 ​± ​0.04%) (Fig. 5Q). This evidence concerns the gene H2AX and neoplasm.