On univariate analysis, worse ECOG‐PS (≥2), the presence of liver metastasis, the presence of bone metastasis, lower Hb, high serum lactate dehydrogenase (LDH) levels (≥ULN), and high serum CRP levels were extracted as factors predictive of a shorter OS as shown in Table 3. The gene discussed is GSTM1; the disease is bone metastasis.