scholarly journals Relations of Changes in Serum Carcinoembryonic Antigen Levels before and after Neoadjuvant Chemoradiotherapy and after Surgery to Histologic Response and Outcomes in Patients with Locally Advanced Rectal Cancer

Oncology ◽  
2017 ◽  
Vol 94 (3) ◽  
pp. 167-175 ◽  
Author(s):  
Gota Saito ◽  
Sotaro Sadahiro ◽  
Takashi Ogimi ◽  
Hiroshi Miyakita ◽  
Kazutake Okada ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Carcinoembryonic Antigen ◽  
Locally Advanced ◽  
Neoadjuvant Chemoradiotherapy ◽  
Advanced Rectal Cancer ◽  
Locally Advanced Rectal Cancer ◽  
Histologic Response ◽  
Serum Carcinoembryonic Antigen ◽  
Before And After

scholarly journals miRNA-148a Enhances the Treatment Response of Patients with Rectal Cancer to Chemoradiation and Promotes Apoptosis by Directly Targeting c-Met

Biomedicines ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 1371
Author(s):  
Chun-Ming Huang ◽  
Ming-Yii Huang ◽  
Yen-Cheng Chen ◽  
Po-Jung Chen ◽  
Wei-Chih Su ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Cellular Proliferation ◽  
Locally Advanced ◽  
Neoadjuvant Chemoradiotherapy ◽  
Complete Response ◽  
Advanced Rectal Cancer ◽  
Locally Advanced Rectal Cancer ◽  
Before And After

Patients with locally advanced rectal cancer (LARC) who achieve a pathological complete response (pCR) to neoadjuvant chemoradiotherapy (NACRT) have an excellent prognosis, but only approximately 30% of patients achieve pCR. Therefore, identifying predictors of pCR is imperative. We employed a microRNA (miRNA) microarray to compare the miRNA profiles of patients with LARC who achieved pCR (pCR group, n = 5) with those who did not (non-pCR group, n = 5). The validation set confirmed that miRNA-148a was overexpressed in the pCR group (n = 11) compared with the non-pCR group (n = 40). Cell proliferation and clonogenic assays revealed that miRNA-148a overexpression radio-sensitized cancer cells and inhibited cellular proliferation, before and after irradiation (p < 0.01). Apoptosis assays demonstrated that miRNA-148a enhanced apoptosis before and after irradiation. Reporter assays revealed that c-Met was the direct target gene of miRNA-148a. An in vivo study indicated that miRNA-148a enhanced the irradiation-induced suppression of xenograft tumor growth (p < 0.01). miRNA-148a may be a biomarker of pCR following NACRT and can promote apoptosis and inhibit proliferation in CRC cells by directly targeting c-Met in vitro and enhancing tumor response to irradiation in vivo.

scholarly journals Carcinoembryonic antigen BEFORE AND AFTER neoadjuvant chemoradiotherapy IN PREDICTION OF pathological complete response in patients with locally advanced rectal cancer

2018 ◽  
Vol 17 (5) ◽  
pp. 60-66
Author(s):  
N. V. Severskaya ◽  
D. V. Erygin ◽  
Yu. V. Aleksandrov ◽  
N. G. Minaeva ◽  
N. Yu. Dvinskikh ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Pathological Complete Response ◽  
Locally Advanced ◽  
Neoadjuvant Chemoradiotherapy ◽  
Complete Response ◽  
Advanced Rectal Cancer ◽  
Locally Advanced Rectal Cancer ◽  
Before And After ◽  
Pre Treatment ◽  
Well Differentiated

Carcinoembryonic antigen (CEA) is widely used to evaluate the effectiveness of treatment in patients with rectal cancer.The aim of the studywas to investigate whether the CEA levels measured before and after neoadjuvant chemoradiotherapy (nCRT) can be used to predict pathological complete response (pCR) in patients with locally advanced rectal cancer.Material and methods.179 patients with locally advanced rectal cancer were treated with nCRT followed by surgical treatment. The serum CEA level was measured before and 610 weeks after the completion of nCRT. Preand post nCRT CEA levels were compared with pCR. The factors associated with pCR were studied.Results.pCR after nCRT was achieved in 12 % (22/179) patients. The incidence of pCR was higher in patients with normal (<5 ng/mL) pre-treatment CEA level (20 %vs8 %, p=0.019). In patients with the elevated pre-treatment CEA level (> 5 ng/mL), there were no significant differences in the incidence of pCR between cases with normalization and without normalization of CEA level after treatment (p=0.08). The maximum likelihood of pCR determined by the ROC curve was <2.8 ng/mL with pre-treatment CEA (31 %) and <1.8 ng/mL with post-treatment CEA (23 %). Well differentiated tumors (G1) had higher likelihood of pCR (46%) in patients with low pre-treatment CEA (<2.8 ng/mL).Conclusion.Low CEA before and after nCRT is a predictor of pCR. Well differentiated tumors increase the probability of pCR after nCRT.

scholarly journals Molecular and Dynamic Evaluation of Proteins Related to Resistance to Neoadjuvant Treatment with Chemoradiotherapy in Circulating Tumor Cells of Patients with Locally Advanced Rectal Cancer

Cells ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1539
Author(s):  
Virgílio Souza e Silva ◽  
Emne Ali Abdallah ◽  
Bianca de Cássia Troncarelli Flores ◽  
Alexcia Camila Braun ◽  
Daniela de Jesus Ferreira Costa ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Tumor Cells ◽  
Circulating Tumor Cells ◽  
Transforming Growth Factor ◽  
Locally Advanced ◽  
Neoadjuvant Treatment ◽  
Neoadjuvant Chemoradiotherapy ◽  
Disease Free Survival ◽  
Advanced Rectal Cancer ◽  
Locally Advanced Rectal Cancer

The heterogeneity of response to neoadjuvant chemoradiotherapy (NCRT) is still a challenge in locally advanced rectal cancer (LARC). The evaluation of thymidylate synthase (TYMS) and RAD23 homolog B (RAD23B) expression in circulating tumor cells (CTCs) provides complementary clinical information. CTCs were prospectively evaluated in 166 blood samples (63 patients) with LARC undergoing NCRT. The primary objective was to verify if the absence of RAD23B/TYMS in CTCs would correlate with pathological complete response (pCR). Secondary objectives were to correlate CTC kinetics before (C1)/after NCRT (C2), in addition to the expression of transforming growth factor-β receptor I (TGF-βRI) with survival rates. CTCs were isolated by ISET and evaluated by immunocytochemistry (protein expression). At C1, RAD23B was detected in 54.1% of patients with no pCR and its absence in 91.7% of patients with pCR (p = 0.014); TYMS− was observed in 90% of patients with pCR and TYMS+ in 51.7% without pCR (p = 0.057). Patients with CTC2 > CTC1 had worse disease-free survival (DFS) (p = 0.00025) and overall survival (OS) (p = 0.0036) compared with those with CTC2 ≤ CTC1. TGF-βRI expression in any time correlated with worse DFS (p = 0.059). To conclude, RAD23B/TYMS and CTC kinetics may facilitate the personalized treatment of LARC.

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