Association between elevated microsatellite alterations at selected tetranucleotides (EMAST) and clinicopathological features of colorectal cancer patients: a molecular trait of proximal colon cancer in the elderly?

2019 ◽  
Vol 45 (2) ◽  
pp. e51-e52
Author(s):  
M. Watson ◽  
A. Kanani ◽  
D. Lea ◽  
R. Khajavi ◽  
J.A. Søreide ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Colon Cancer ◽  
Cancer Patients ◽  
The Elderly ◽  
Proximal Colon ◽  
Clinicopathological Features ◽  
Colorectal Cancer Patients

scholarly journals Tumour‐suppressive effect of oestrogen receptor β in colorectal cancer patients, colon cancer cells, and a zebrafish model

2020 ◽  
Vol 251 (3) ◽  
pp. 297-309
Author(s):  
Geriolda Topi ◽  
Shakti Ranjan Satapathy ◽  
Pujarini Dash ◽  
Syrina Fred Mehrabi ◽  
Roy Ehrnström ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Colon Cancer ◽  
Cancer Cells ◽  
Cancer Patients ◽  
Oestrogen Receptor ◽  
Suppressive Effect ◽  
Colon Cancer Cells ◽  
Zebrafish Model ◽  
Colorectal Cancer Patients

Clinical and pathological characteristics of elderly colorectal cancer patients over 70 years old and comparison with patients under 50 years old.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e14174-e14174
Author(s):  
Betul Erismis ◽  
Nadire Kucukoztas ◽  
Samed Rahatli ◽  
Selim Yalcin ◽  
Omer Dizdar ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Elderly Patients ◽  
Cancer Patients ◽  
Systemic Disease ◽  
Performance Status ◽  
The Elderly ◽  
University Hospital ◽  
Individual Treatment ◽  
Pathological Characteristics ◽  
Colorectal Cancer Patients

e14174 Background: Incidence of colon cancer increases with age and generally is diagnosed at the age of between 60-75. Because of comorbidities in elderly patients who are older 70 years of age, lower doses of adjuvant or metastatic therapy is given them or the other option can be the chemotherapeutics which had less side effects. Methods: We aim to identify clinical and pathological characteristics of elderly colorectal cancer patients over 70 years of age who were followed at Baskent University Hospital and compare with CRC patients under the 50 years of age. Results: 182 CRC patients were assigned to the study who were followed between 1998-2011. We classified the patients into two categories according to the age. 91 participants were over 70 years of age and 91 participants were under 50 years of age. There were no significant differences between two groups for gender and percentage of patients having surgery (p=0.65/0.732). History of having systemic disease was significantly higher in the elderly group (p<0.001). Adjvuvant chemotherapy was given to the 38 (53.5%) patients aged over 70 and 66 (91.7%) patients aged under 50 (p<0.001). We compared the both groups for progression free and overall survival time for all stages. However, there were no statistically significant differences between two groups. Conclusions: Our study confirms that elderly CRC patients get benefit from the adjuvant chemotherapy treatment as the same as patients under 50 years of age. Therefore, physcians should consider about performance status and systemic disease in elderly patients and give an individual treatment to them.

Impact of diabetes on site-specific oncologic outcome in stage I-III colorectal cancer.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e14114-e14114
Author(s):  
Justin Y Jeon ◽  
Deok Hyun Jeong ◽  
Min Keun Park ◽  
Jennifer A. Ligibel ◽  
Jeffrey A. Meyerhardt ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Rectal Cancer ◽  
Colon Cancer ◽  
Cancer Patients ◽  
Proximal Colon ◽  
Survival Outcome ◽  
Recurrence Free Survival ◽  
Site Specific ◽  
Free Survival ◽  
All Cause Mortality

e14114 Background: Background: Conflicting results have been reported whether pre diagnosis diabetes mellitus (DM) influence survival of colorectal cancer patients or not. Therefore, we determine the influence of DM on long-term outcomes of stage 1-3 patients with resected colon and rectal cancer. Methods: This prospective study include a total of 4,131 participants who were treated for cancer between 1995 and 2005 in South Korea in a single hospital (Non DM: 3,614 patients, DM: 517 patients) with average follow up period of 12 years. We analyzed differences in all cause mortality, disease free survival (DFS), recurrence free survival (RFS) and colorectal cancer-specific mortality between colorectal patients with DM and those without DM. Results: After adjustment for potential confounders, pre-diagnosis DM significantly associated with increased all cause mortality (HR: 1.46, 95% CI: 1.11-1.92), and recurrence free survival reduced DFS (HR: 1.45, 95%CI: 1.15-1.84) and RFS (HR: 1.32, 95% CI: 0.98-1.76) in colon cancer patients but not in rectal cancer patients. In colon cancer patients, DM negatively affects the survival outcome of proximal colon cancer (HR: 2.08, 95%CI: 1.38-3.13), but not of distal cancer (HR:1.34, 95% CI: 0.92-1.96). Conclusions: To our knowledge, the current study first reported the effects of pre-diagnosis DM on survival outcome of colorectal cancer are site specific (proximal colon, distal colon and rectum). The current study was supported by the National Research Foundation of Korea (KRF) (No. 2011-0004892) and the National R&D Program for Cancer Control, Ministry of Health & Welfare, Republic of Korea (1120230). [Table: see text]

Tumor cancer stem cell genetic profile as predictor of relapse in stage II and III radically resected colon cancer patients.

2013 ◽  
Vol 31 (4_suppl) ◽  
pp. 429-429
Author(s):  
Riccardo Giampieri ◽  
Mario Scartozzi ◽  
Cristian Loretelli ◽  
Alessandra Mandolesi ◽  
Alessandro Bittoni ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Colon Cancer ◽  
Cancer Patients ◽  
Stage Ii ◽  
Genetic Profile ◽  
Relapse Free Survival ◽  
Free Survival ◽  
Group A ◽  
Colorectal Cancer Patients ◽  
Risk Of Relapse

429 Background: Although disease stage is the most relevant factor influencing treatment choice in locally advanced radically resected colon cancer, it is not uncommon to observe disease relapse in patients with apparent low risk stage that are usually excluded from an adjuvant therapy. On the contrary we also know that some patients with high risk stage are not likely to relapse, independently from medical treatment received. Preclinical data suggested that cancer stem cells may influence the biological behaviour of many solid tumours including colorectal cancer, we then tested a panel of genetic markers of stemness in resected Dukes stage B and C colorectal cancer patients in order to define a prognostic profile. Methods: We performed k-means unsupervised clustering (K=2) using the mRNA expression data of 66 genes. The algorithm divided the patients into two groups (A and B). Most patients clustered in a manner consistent with relapse free survival, defined as the time between primary surgery and first radiological sign of metastatic involvement or patients death, whichever came first. Results: A total of 62 patients were analysed (36, 58% stage II and 26, 41% stage III), 36 (58%) patients relapsed during the follow-up period (range 1.63-86.5 months). Respectively 12 (19%) and 50 (81%) patients were allocated into group A and B. A significantly different median relapse-free survival was observed between the 2 groups (22.18 vs 42.85 months, p=0.0296). Interestingly, even if group A had a worse outcome in terms of risk of relapse, an higher proportion of stage II patients could be found in this group (83%) when compared with the group B (52%). Among tested genes, those with the highest capability in determining allocation into one of the two groups were CD44, ALCAM, DTX2, HSPA9, CCNA2, PDX1, MYST1, COL1A1 and ABCG2. Conclusions: This analysis supports the idea that, other than (or maybe more than) stage, biological variables, such as expression levels of colon cancer stem cell genes, may be relevant in determining an increased risk of relapse in resected colorectal cancer patients. Our findings may also be relevant for new treatment strategies targeting tumour stem cells genetic profile.

Targeted agents: review of toxicity in the elderly metastatic colorectal cancer patients

2011 ◽  
Vol 6 (4) ◽  
pp. 245-251 ◽  
Author(s):  
Flora Kyriakou ◽  
Panteleimon Kountourakis ◽  
Demetris Papamichael
Keyword(s):  
Colorectal Cancer ◽  
Metastatic Colorectal Cancer ◽  
Cancer Patients ◽  
The Elderly ◽  
Targeted Agents ◽  
Colorectal Cancer Patients

scholarly journals BSM1 Polymorphism Association in Vitamin D Receptor Genes with the Occurrence of Colorectal Cancer in Palembang, Indonesia

2020 ◽  
Vol 55 (6) ◽  
Author(s):  
M. Alsen Arlan ◽  
Sarup Singh ◽  
Efman E.U. Manawan ◽  
M. Hafidh Komar ◽  
Irsan Saleh
Keyword(s):  
Colorectal Cancer ◽  
Colon Cancer ◽  
Vitamin D ◽  
Cancer Patients ◽  
Vitamin D Receptor ◽  
Protective Factor ◽  
Control Group ◽  
Exact Test ◽  
Cancer Occurrence ◽  
Colorectal Cancer Patients

This paper analyzed the association between Bsm1 polymorphism in vitamin D receptor genes with colorectal cancer patients in Palembang, Indonesia. This case control study was conducted from June 2019 to December 2019. The genotype was analyzed using polymerase chain reaction-restriction fragment length polymorphism with the Bsm1 restriction enzyme. Findings showed the distribution of BB-Bb-bb genotype among colorectal cancer patients was 18.6%:26.7%:4.7%, whereas the distribution in a control group was 0%:43%:7%. The distribution of B and b alleles in colorectal cancer patients was 32%:18% compared to the control group’s distribution of 21.5%:28.5%. A statistical analysis of Fisher's exact test was conducted to examine the association of polymorphism with colorectal cancer occurrence. Findings demonstrated that there is a significant association was found between Bsm1 polymorphism of vitamin D receptor genes and colorectal cancer occurrences among patients in Palembang, Indonesia. Detailed analysis revealed that rs1544410 in the genotype BB might be a causal factor for colon cancer occurrence. Allele B on the other hand was reported to be the protective factor against colon cancer.

Oncogenic mutations in colorectal cancer, indications for anatomical sites, and targeted intervention.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. e22037-e22037
Author(s):  
Giovanni Corso ◽  
Valeria Pascale ◽  
Giuseppe Flauti ◽  
Daniele Marrelli ◽  
Franco Roviello
Keyword(s):  
Colorectal Cancer ◽  
Colon Cancer ◽  
Microsatellite Instability ◽  
Cancer Patients ◽  
Left Colon ◽  
Targeted Intervention ◽  
Right Colon ◽  
Right Colon Cancer ◽  
Oncogenic Mutations ◽  
Colorectal Cancer Patients

e22037 Background: Oncogenic mutations, such as KRAS, in colorectal cancer patients are considered standard molecular biomarkers that predict the clinical benefit for the targeted intervention with EGFR inhibitors. In addition, these mutations are associated with specific anatomical area in the colon tumor development, as BRAF mutations with the microsatellite instability. Methods: In this translational study we aim to assess the mutation frequencies of the EGFR [hotspot area and polyadenine deletions (A13_del)], KRAS, BRAFV600E, and PIK3CA oncogenes in a series of 280 colorectal cancer patients. Microsatellite instability phenotype is considered in this series. All patients' clinicopathological data were considered for statistical analysis and associations. Results: In this study, we verified multiple associations between oncogenic mutations and specified clinicopathological tumor features. Respectively, we identified the following significant results: 1) EGFR A13_deletions are associated with right colon carcinoma (22.2% vs. 3.3%; p<0.005), mucinous histotype (16% vs. 7.8%; p=0.042), G3 grading (19% vs. 7.3%; p=0.024) and microsatellite instability status (p<0.005); 2) PIK3CA mutations are related mucinous histotype (12% vs. 4.4%; p=0.021) 3) KRASG12 and KRASG13mutations are correlated respectively with the left (91.4% vs. 59.3%) and right (40.7% vs. 8.6%) colon cancer development (p<0.005), and finally 4) microsatellite instability is associated with right colon tumors (28.4% vs. 5.5%; p<0.005). Conclusions: Mostly, we verified a high frequency rate of the KRASG13 and EGFR A13_del oncogene mutations in right colon cancer; whereas KRASG12 codon mutation occurs more frequently in left colon cancers. In particular, we assessed that right colon cancer is associated with specific molecular characteristics, in comparison to left colon tumors. These evidences, in association with specific clinicopathological data, can delineate novel approaches for the colorectal cancer classification and targeted intervention.

Analysis of survival and prognostic factors in metastatic colorectal cancer patients treated with first line bevacizumab.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. e15009-e15009 ◽  
Author(s):  
Nazim Demircan ◽  
Faysal Dane ◽  
Mehmet Akif Ozturk ◽  
Mehmet Besiroglu ◽  
Nalan Babacan ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Colon Cancer ◽  
Prognostic Factors ◽  
Metastatic Colorectal Cancer ◽  
Cancer Patients ◽  
First Line ◽  
Right Colon Cancer ◽  
Kras Status ◽  
Colorectal Cancer Patients ◽  
Left Colon Cancer

e15009 Background: Colorectal cancer is a major cause of mortality worldwide. Survival has been improved by usage of bevacizumab. Our study aimed to analyze survival and prognostic factors in metastatic colorectal cancer patients treated with first-line bevacizumab. Methods: Files of patients were examined retrospectively and 360 patients treated with first-line bevacizumab were included. Data regarding age, gender, family history, location of the primary, histopathology, KRAS status, surgery and chemotherapy were acquired from the files. Overall response rates (ORR) to chemotherapy, progression and exitus dates or dates of last examination were recorded. Median progression-free and overall survival (PFS and OS) were calculated. Survival was analyzed with Kaplan-Meier method. Log-rank test and Cox regression model were used for univariate and multivariate analysis, respectively. Results: 201 (%55,8) of the patients were male and 159 (%44,2) were female. Median age at the time of the diagnosis was 59.5. 260 patients (%72,2) had initially stage IV disease. KRAS was mutant in 125 patients (%34,7). Median PFS was 8.5 months, median OS was 25.3 months and ORR was %51,4. Median PFS was 8.2 and 9.5 months, median OS was 30.4 and 28.1 months, ORR was %62,6 and %58.4 in KRAS wild type and mutant groups, respectively. In patients with left colon cancer median PFS and OS (9.6 and 27.1 months) were superior compared to patients with right colon cancer (7.3 and 19.4 months) (p = 0.005 and 0.016, respectively). Location of the primary, histopathologic grade, primary surgery, metastasectomy and KRAS status affected overall survival significantly (p < 0.05) in univariate analysis. In multivariate analysis, histopathologic grade (p = 0.034) and metastasectomy (p = 0.001) were independent prognostic factors. Conclusions: In our study, response rates and survival of metastatic colorectal cancer patients treated with first-line bevacizumab were similar to previous studies. Left colon cancer patients had superior median PFS and OS compared to right colon cancer patients as shown in recent studies. Histopathologic grade and metastasectomy were independent prognostic factors in correlation with literature.

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