Abstract:Objective To explore the expression of circulating tumor cell (CTC), human epidermal growth factor receptor 2 (HER2), phosphatidylinositol-3-kinase catalytic subunit α (PI3KCA) in metastatic breast cancer. Methods A total of 50 cases of metastatic breast cancer patients in Nantong Hospital of Traditional Chinese Medicine (“our hospital” for short) from April 2018 to June 2019 were selected as the case group, and 50 cases of healthy women in our hospital during the same period were selected as the normal group. The levels of CTC, HER2, PI3KCA in CF-DNA and serum levels of carcinoembryonic antigen (CEA) and carbohydrate antigen 15-3 (CA15-3) were measured and compared between the two groups. Kappa test was used to analyze the consistency of CTC, HER2 and PI3KCA content in CF-DNA in diagnosis of metastatic breast cancer and pathological diagnosis. Pearson linear model was used to analyze the correlation between CTC, HER2, PI3KCA content in CF-DNA and serum CEA, CA15-3 levels. Results The levels of CTC, HER2 and PI3KCA content in CF-DNA in the case group were higher than those in the normal group (P < 0.05). The sensitivity of the three combined diagnosis of metastatic breast cancer was 86.00%, the specificity was 90.00%, the accuracy rate was 88.00%, the positive predictive value was 89.58%, the negative predictive value was 86.54%, and the consistency with the pathological diagnosis was 0.760 (highly consistent). The serum CEA and CA15-3 levels in the case group were significantly higher than those in the normal group (P < 0.05). Pearson analysis showed that the number of CTC, the amount of HER2 protein and the content of PI3KCA short fragment in CF-DNA were positively correlated with CEA and CA15-3 in serum(r = 0.752, 0.801; 0.691, 0.702; 0.628, 0.611, all P < 0.05). Conclusion The contents of CTC, HER2 and PI3KCA in CF-DNA in patients with metastatic breast cancer are correlated with serum CEA and CA15-3 levels, and have high diagnostic value for metastatic breast cancer, and have good consistency with pathological diagnosis.
桑玉玉 喻海忠. CTC、HER2及PI3KCA在转移性乳腺癌中的表达[J]. 中国医药导报, 2021, 18(11): 109-112.
SANG Yuyu YU Haizhong. Expression of CTC, HER2 and PI3KCA in metastatic breast cancer. 中国医药导报, 2021, 18(11): 109-112.