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Table 2 Clinical response to primary chemotherapy and breast cancer outcome

From: Glutathione S-transferase M1 null genotype: lack of association with tumour characteristics and survival in advanced breast cancer

  GSTM1  
Parameters Present Null P
Objective response* 76.9% 75.5% 0.8719
Disease-free survival (months) 42.00 ± 2.65 54.43 ± 5.67 0.8094
Overall survival (months) 74.82 ± 3.95 72.73 ± 4.81 0.9729
  1. *Objective response was estimated as complete and partial responses. Estimated by Pearson χ2 test. Estimated by log rank test, median± standard error. GST, glutathione S-transferase.