RESUMEN
Objective:To explore the prediction model of tissue chip technology for the chemotherapy response of patients with colorectal cancer.Methods:217 patients with colorectal cancer who had received standardized chemotherapy in the Affiliated People’s Hospital of Ningbo University from Jan. 2017 to Dec. 2019 were prospectively selected. The patients were randomly divided into training set (152 cases) and test set (65 cases) according to the ratio of 7:3, and were followed up for 6 months. The clinical data of the patients in the training set were compared, the expression levels of Ang-2, caspase-3 and CD147 in the patients were analyzed by tissue microarray technology, and the related factors affecting the responsiveness of colorectal cancer chemotherapy were analyzed by the Logistic regression model. R software was used based on the training set. A nomogram prediction model was built and model performance on the test set was evaluated.Results:One case was excluded from the training center, and 151 cases were finally included, including 93 cases in the chemotherapy response group and 58 cases in the chemotherapy response group. The tumor diameter, serum carcinoembryonic antigen, caspase3, Ang2 expression level, and the proportion of clinical stage IV in the poor chemotherapy group were significantly higher than those in the good chemotherapy group (all P<0.05) ; Logistic regression showed tumor diameter ( OR=2.394), serum carcinoembryonic antigen ( OR=1.878), caspase-3 ( OR=4.261), Ang-2 expression level ( OR=5.457), and clinical stage IV ( OR=5.954) were independent risk factors for adverse drug reactions in patients with colorectal cancer (all P<0.05). The consistency index (C-index) for predicting the factors related to adverse chemotherapy reactions in patients with colorectal cancer was 0.915. External verification showed that the sensitivity was 86.96%, the specificity was 92.50%, and the accuracy was 90.48% (42/65) . Conclusion:The expression levels of Ang-2 and caspase-3 are correlated with the responsiveness of colorectal cancer to chemotherapy, and can be used as predictive indicators to evaluate the responsiveness of colorectal cancer to chemotherapy.
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Neoadjuvant chemotherapy is used as a new therapeutic modality in the treatment of locally advanced cervical cancer, but limited information is available regarding the effectiveness and survival. The aim of this study is to identify the factors concerning chemoresponsiveness and survival, and to evaluate the efficacy of neoadjuvant combination chemotherapy(NAC) for the patients with locally advanced cervical cancer in terms of 2-year disease-free survival (DFS). Between June 1987 and May 1992, 77 patients with bulky or locally advanced cervical cancer(FIGO Stage IB-III) received two or three courses of NAC. Sixty patients were treated with FP chemotherapy regimen consisting of 5-FU 1000mg/m2(day 1~day 5), CDDP 60mg/m2(day 1) and remaining 17 patients received EP chemotherapy consisting of Epirubicin 110mg/m2(day 1), CDDP 60mg/m2(day 1). After chemotherapy, patients were treated with surgery or radiotherapy according to feasibility. The effectiveness of NAC was evaluated for response by using World Health Organization criteria. Factors related to chemores ponse and survival were analyzed. The overall clinical response rate was 61%, which included a complete response(CR) in 16 patients(20.8%) and a partial response(PR) in 27 patients (40.2%). Mass size but none of the other parameters studied(age, stage, histologic type, chemotherapy regimen) was related to chemoresponsiveness. This therapy rendered radical surgery feasible in 58 evaluable cases(75.3%). Pretereatment characteristics were analyzed for response to NAC. Significantly lower response rates(38.2%) and lower 2-year DFS rates(48.7%) were found in stage II or III patients with tumor size more than 4 cm in diameter. Patients achieving CR or PR had a significantly improved 2-year DFS rate compared with those who did not respond. Lymph-node metastases were found after chemotherapy in 34.5%(20/58) of the surgically treated patients and less than 3 lymph node were involved in 10 patients. Pathologic parametrial involvement was found to be the most significant prognostic factor for recurrence. A 2-year DFS of 72% and 48.7% for stage IB-IIA, I IB-III, respectively, was found. According to chemoresponsiveness, these rate was 78% for responders and 31.6% for nonresponders, respectively. Poor chemoresponsiveness and uncertain survival benifits in stage II, III with bulky mass necessitate more effective therapeutic modalities in this group of patients.