Impact ofKRASmutation and PTEN expression on cetuximab-treated colorectal cancer

作者: Fang-Hua Li , Lin Shen , Zhuang-Hua Li , Hui-Yan Luo , Miao-Zhen Qiu

DOI: 10.3748/WJG.V16.I46.5881

关键词: Colorectal cancerCancer researchRegimenTensinGastroenterologyChemotherapyPTENMonoclonalCetuximabInternal medicineMedicineImmunohistochemistryGeneral Medicine

摘要: AIM: To investigate the prognostic value of KRAS mutation, and phosphatase tensin (PTEN) expression in Chinese metastatic colorectal cancer (mCRC) patients treated with cetuximab. METHODS: Ninety mCRC cetuximab were evaluated for mutation PTEN protein by DNA sequencing codons 12 13 immunohistochemistry, respectively. We then selected 61 cetuximab, either combination chemotherapy, or alone as a second-line third-line regimen to assess whether is associated response survival time cetuximab. RESULTS: was found 30 (33.3%) tumor samples from 90 patients, positive detected 58 (64.4%) patients. Among who regimen, resistance 22 39 without rate 4.5% 46.1% respectively (P = 0.001), shorter median progression-free (PFS) 14 ± 1.3 wk 32 2.5 < overall (OS) 11 1.2 mo 19 1.8 well 24 negative 37 responsive 4.2% 48.6% respectively, PFS 17 2.0 28 1.9 0.07), OS 18 0.004). Combined analysis showed that two favorable factors longer than those one factor no 0.001). CONCLUSION: are significantly correlated cetuximab.

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