Relationship between age and the histopathological features to chemotherapy response in colorectal cancer patients: a prospective observational study

Introduction: Chemotherapy response in early age-onset colorectal cancer patients is still controversial, and the results of chemotherapy response are unknown. Therefore, the purpose of this study is to determine the relationship between the age of colorectal cancer patients and histopathological features and chemotherapy response. Methods: This is a prospective observational study. The subjects in this study were colorectal cancer patients in the Digestive Surgery division at Tertiary Hospital in West Java from September 2021 to September 2022. Results: There were 86 subjects who underwent chemotherapy in accordance with the inclusion and exclusion criteria. Consisting of 39 patients of early age onset and 44 female patients. The most common histopathological feature in early age onset (EAO) and late age onset (LAO) was adenocarcinoma (25% and 46%, respectively). Stage III colorectal cancer affected 38 patients, while stage IV affected 48 patients. There was a significant relationship between early age onset and late age onset with histological features (p < 0.001). The patients with the highest chemotherapy response had stable diseases in EAO (17 patients) and LAO (20 patients). There was no statistically significant relationship between age, histological features, and stage of colorectal cancer and chemotherapy response (p > 0.05). The results of the ordinal logistic regression test showed no systematic relationship between chemotherapy response and age, histopathological features, gender, or cancer stage (p > 0.05). Conclusion: There was no association between age and histopathologic features with chemotherapy response and there is no difference in chemotherapy response between early and late age onset. (AU)

The analysis between clinicopathological aspect of early-onset vs. late-onset colorectal cancer and mortality rate: a cross-sectional study.

Early-onset colorectal cancer (CRC) has different clinical and pathological characteristics compared with late-onset CRC. Mortality rate as a postoperative outcome is a patient's postoperative outcome considered based on the state of life or death. The objective of this research is to analyse the comparison between clinicopathological aspect of early-onset vs. late-onset CRC as well as their correlation with the mortality rate in Indonesia to support global data. Material and methods: The authors performed a case-control study on 170 subjects with CRC from November 2021 to November 2022 in a Tertiary Hospital in Bandung. Data were extracted from electronic medical records CRC Registry. Bivariate and correlation analyses were used to analyse the difference between variables using IBM SPSS 24.0. P less than 0.05 was considered statistically significant. Results: Anaemia and tumour location variables were significantly different in the early-onset group compared with the late-onset group (P<0.001). It was also found that anaemia (P<0.001), pathological features (P<0.001), and tumour location (P=0.013) had significantly low correlation with onset of CRC (r=0.325; r=0.397; r=0.342, respectively). Conclusion: There is no statistically significant correlation between the clinicopathological features of CRC in both onset and mortality rates in this study.

Different Clinicopathological Characteristics in Indonesian Colorectal Patients with NRAS Mutations and HER2 Over-Expression.

OBJECTIVE: This study aims to assess the association of subject characteristics and NRAS mutations with HER2 expression in CRC. METHODS: This research is a cross-sectional study. The research subjects in this study were colorectal cancer patients in the Digestive Surgery division at Dr. Hasan Sadikin Hospital. There were 58 study subjects. Examination of NRAS mutations was carried out by Polymerase Chain Reaction (PCR) from fresh tumour tissue obtained from surgery or colonoscopy. Meanwhile, HER2 examination used the Immunohistochemistry (IHC) method of paraffin blocks for anatomical pathology examination of the same patients. RESULT: HER2 overexpression was found in 6/58 (10.3%) patients with CRC, and from 8 subjects with NRAS mutations, only 1 subject (1.7%) showed overexpression of HER2. Univariate analysis of HER2 expression showed no significant associations to age, sex, histologic feature, tumor location, and NRAS mutations. A significant association was found between HER2 expression and stage of the CRC with p=0.001. CONCLUSION: There is no association between NRAS mutations and HER2 overexpression in colorectal cancer patients.