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Ribbing Wilén H, Blom J. Interval cancer after two rounds of a Swedish population-based screening program using gender-specific cut-off levels in fecal immunochemical test. J Med Screen 2024; 31:8-14. [PMID: 37455444 PMCID: PMC10878001 DOI: 10.1177/09691413231185722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/17/2023] [Accepted: 05/31/2023] [Indexed: 07/18/2023]
Abstract
OBJECTIVE To evaluate interval cancer (IC) after two screening rounds of the Swedish population-based screening program of Stockholm-Gotland applying gender-specific cut-off levels in the fecal immunochemical test (FIT). METHODS All 60- to 69-year-olds invited to screening 2015-2019 were included. The cut-off level for a positive test was 40 µg/g in women and 80 µg/g in men. Screening-detected colorectal cancers (SD CRCs) and ICs were verified in the Swedish Colorectal Cancer Register, and the follow-up time was two years from invitation. The test sensitivity, the IC rate (ICs per 10,000 screening negatives) and the IC incidence (ICs per 100,000 person-years) relative to the background CRC incidence were assessed by gender and age. The FIT levels were compared in men and women for CRCs diagnosed within one year of the sample. RESULTS In the second screening round, 229,187 were invited, and SD CRCs and ICs were diagnosed in 193 and 144, respectively. The IC rate was 8.9 (7.4-10.3) and test sensitivity 0.61 (0.55-0.66), and was similar in men and women. For two screening rounds, the IC rate was significantly higher in men than in women, but the IC incidence/ background CRC incidence was similar in both genders. The FIT levels in female participants with CRC were significantly lower overall, and in early-staged CRCs as compared to men, and proximal localization was more common in women. In multivariable analysis, FIT levels were significantly lower in proximal CRCs. CONCLUSION Over two rounds, the IC incidence relative to the background CRC incidence was similar in men and women supporting a gender-specific screening strategy. The results could be explained by lower FIT levels in women due to proximal CRC localization.
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Affiliation(s)
- Hanna Ribbing Wilén
- Department of Clinical Science and Education Södersjukhuset (KI SÖS), Karolinska Institutet, Stockholm, Sweden
| | - Johannes Blom
- Department of Clinical Science and Education Södersjukhuset (KI SÖS), Karolinska Institutet, Stockholm, Sweden
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Granger SP, Preece RAD, Thomas MG, Dixon SW, Chambers AC, Messenger DE. Colorectal cancer incidence trends by tumour location among adults of screening-age in England: a population-based study. Colorectal Dis 2023; 25:1771-1782. [PMID: 37553121 DOI: 10.1111/codi.16666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 05/04/2023] [Accepted: 05/07/2023] [Indexed: 08/10/2023]
Abstract
AIM Proximal and distal colorectal cancers (CRCs) exhibit different clinical, molecular and biological patterns. The aim of this study was to determine temporal trends in the age-standardized incidence rates (ASIRs) of proximal and distal CRC following the introduction of the English Bowel Cancer Screening Programme (BCSP) in 2006. METHOD The National Cancer Registration and Analysis Service database was used to identify incident cases of CRC among adults of screening age (60-74 years) between 2001 and 2017. ASIRs were calculated using the European Standard Population 2013 and incidence trends analysed by anatomical subsite (proximal, caecum to descending colon; distal, sigmoid to rectum), sex and Index of Multiple Deprivation (IMD) quintile using Joinpoint regression software. RESULTS Between 2001 and 2017, 541 515 incident cases of CRC were diagnosed [236 167 proximal (43.6%) and 305 348 distal (56.4%)]. A marginal reduction in the proximal ASIR was noted from 2008 [annual percentage change (APC) -1.4% (95% CI -2.0% to -0.9%)] compared with a greater reduction in distal ASIR from 2011 to 2014 [APC -6.6% (95% CI -11.5% to -1.5%)] which plateaued thereafter [APC -0.5% (95% CI -3.2% to 2.2%)]. Incidence rates decreased more rapidly in men than women. Adults in IMD quintiles 4-5 experienced the greatest reduction in distal tumours [APC -3.5% (95% CI -4.3% to -2.7%)]. CONCLUSION Following the introduction of the English BCSP, the incidence of CRC has subsequently reduced among adults of screening age, with this trend being most pronounced in distal tumours and in men. There is also evidence of a reduction in the deprivation gap for distal tumour incidence. Strategies to improve the detection of proximal tumours are warranted.
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Affiliation(s)
- Sam P Granger
- Department of Colorectal Surgery, Bristol Royal Infirmary, Bristol, UK
| | - Ryan A D Preece
- Department of Colorectal Surgery, Bristol Royal Infirmary, Bristol, UK
| | - Michael G Thomas
- Department of Colorectal Surgery, Bristol Royal Infirmary, Bristol, UK
| | - Steven W Dixon
- Department of Gastroenterology, Bristol Royal Infirmary, Bristol, UK
| | - Adam C Chambers
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - David E Messenger
- Department of Colorectal Surgery, Bristol Royal Infirmary, Bristol, UK
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Ribbing Wilén H, Saraste D, Blom J. Interval cancers in a population-based screening program for colorectal cancer with gender-specific cut-off levels for fecal immunochemical test. J Med Screen 2022; 29:156-165. [PMID: 35257615 PMCID: PMC9381686 DOI: 10.1177/09691413221085218] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Objective To evaluate interval cancers (IC) in the population-based Swedish regional colorectal cancer (CRC) screening program of Stockholm-Gotland, which uses gender-specific cut-off levels for the fecal immunochemical test (FIT). Methods All individuals aged 60–69 in Stockholm-Gotland invited to the screening program in October 2015 to September 2017 were followed up 2 years after invitation. Cut-off level for a positive FIT was 40 µg/g in women and 80 µg/g in men. Those with a positive FIT were referred to colonoscopy. Screening-detected CRC (SD-CRC) and IC after negative FIT (FIT-IC) or negative screening colonoscopy (Colonoscopy-IC) were identified in the Swedish colorectal cancer register. The IC rate was calculated as IC/(FIT negatives + negative screening colonoscopies). The IC incidence rate (ICs among negatives per 100,000 person-years) in different sex and age groups was compared to the mean CRC incidence before regional screening implementation. Test sensitivity was defined as SD-CRC/(SD-CRC + FIT-IC). Results Approximately 214,400 individuals were invited, and in 3521 screening colonoscopies 257(6.3%) SD-CRCs were detected. During follow-up, 124 FIT-IC and 7 Colonoscopy-IC were diagnosed, yielding an IC rate of 12.6 and 6.0 per 10,000 negatives (p = 0.00005) and a test sensitivity of 62% and 75% (p = 0.01) in men and women respectively. The IC incidence rate compared to CRC incidence was non-significantly lower in women. Conclusion In the population-based screening program of Stockholm-Gotland with a cut-off of 40 µg/g in women and 80 µg/g in men, the test sensitivity was higher and the IC rate was lower in women, which might imply lowering the cut-off level in men. However, the IC incidence rate relative to the CRC incidence was similar in both genders.
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Affiliation(s)
- Hanna Ribbing Wilén
- Department of Clinical Science and Education Södersjukhuset (KI SÖS), 27106Karolinska Institutet, Stockholm, Sweden
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The potential of PIK3CA, KRAS, BRAF, and APC hotspot mutations as a non-invasive detection method for colorectal cancer. Mol Cell Probes 2022; 63:101807. [DOI: 10.1016/j.mcp.2022.101807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 03/09/2022] [Accepted: 03/09/2022] [Indexed: 02/07/2023]
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Comparison of faecal protein biomarkers' diagnostic accuracy for colorectal advanced neoplasms: a systematic review and meta-analysis. Sci Rep 2022; 12:2623. [PMID: 35173276 PMCID: PMC8850428 DOI: 10.1038/s41598-022-06689-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Accepted: 02/03/2022] [Indexed: 11/16/2022] Open
Abstract
Early diagnosis of colorectal advanced neoplasms (ANs), including colorectal cancer (CRC) and advanced adenoma (AA), has a positive effect on the survival rate. As a first attempt, the aim of this meta-analysis was to compare the diagnostic accuracy of faecal protein biomarkers for the detection of colorectal neoplasms with consideration of a wide range of covariates. A systematic literature search was performed up to Jun 10, 2021 on Web of Sciences, Scopus and PubMed. The diagnostic accuracies were calculated using the bivariate/hierarchical random effect model. Biomarkers were determined to be clinically applicable (CA) if they had areas under the curve > 0.70 and positive and negative likelihood ratios > 2 and < 0.5, respectively. A total of 47,059 test results were extracted from 16 immunochemical faecal occult blood test (iFOBT), 26 pyruvate kinase-M2 (PK-M2) and 23 faecal calprotectin (FC) studies. Only iFOBT, PK-M2 and FC for CRC plus iFOBT and PK-M2 for AN were CA. iFOBT had significantly superior accuracy (P = 0.02 versus PK-M2 and P < 0.01 versus FC for CRC; P < 0.01 versus PK-M2 for AN). Regarding covariates, the lateral flow method of PK-M2 measurement increased its accuracy for CRC detection compared to the enzyme-linked immunosorbent assay (P < 0.01). iFOBT is recommended as the most accurate faecal biomarker for CRC and AN diagnosis.
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Novel Diagnostic Biomarkers in Colorectal Cancer. Int J Mol Sci 2022; 23:ijms23020852. [PMID: 35055034 PMCID: PMC8776048 DOI: 10.3390/ijms23020852] [Citation(s) in RCA: 77] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 12/27/2021] [Accepted: 01/03/2022] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer (CRC) is still a leading cause of cancer death worldwide. Less than half of cases are diagnosed when the cancer is locally advanced. CRC is a heterogenous disease associated with a number of genetic or somatic mutations. Diagnostic markers are used for risk stratification and early detection, which might prolong overall survival. Nowadays, the widespread use of semi-invasive endoscopic methods and feacal blood tests characterised by suboptimal accuracy of diagnostic results has led to the detection of cases at later stages. New molecular noninvasive tests based on the detection of CRC alterations seem to be more sensitive and specific then the current methods. Therefore, research aiming at identifying molecular markers, such as DNA, RNA and proteins, would improve survival rates and contribute to the development of personalized medicine. The identification of “ideal” diagnostic biomarkers, having high sensitivity and specificity, being safe, cheap and easy to measure, remains a challenge. The purpose of this review is to discuss recent advances in novel diagnostic biomarkers for tumor tissue, blood and stool samples in CRC patients.
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Alizadeh-Sedigh M, Fazeli MS, Mahmoodzadeh H, Sharif SB, Teimoori-Toolabi L. Methylation of FBN1, SPG20, ITF2, RUNX3, SNCA, MLH1, and SEPT9 genes in circulating cell-free DNA as biomarkers of colorectal cancer. Cancer Biomark 2021; 34:221-250. [PMID: 34957998 DOI: 10.3233/cbm-210315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Investigating aberrant tumor-specific methylation in plasma cell-free DNA provides a promising and noninvasive biomarker for cancer detection. OBJECTIVE We aimed to investigate methylation status of some promoter regions in the plasma and tumor tissues to find biomarkers for early detection of colorectal cancer. METHODS This case-control study on seventy colorectal cancer patients and fifty matched healthy controls used Methylation-Specific High-Resolution Melting Curve analysis to evaluate the methylation of the selected promoter regions in converted genomic tissue DNA and plasma cfDNA. RESULTS The methylation levels in selected regions of SPG20 (+24375 to +24680, +24209 to +24399, and +23625 to +23883), SNCA (+807 to +1013, +7 to +162, and -180 to +7), FBN1 (+223 to +429, +1 to +245, and -18 to -175), ITF2 (+296 to +436 and -180 to +55), SEPT9 (-914412 to -91590 and -99083 to -92264), and MLH1 (-13 to +22) were significantly higher in tumor tissues compared with normal adjacent tissues. The methylation levels of FBN1, ITF2, SNCA, and SPG20 promoters were significantly higher in the patient's plasma compared to patient's normal tissue and plasma of healthy control subjects. FBN1, SPG20, and SEPT9 promoter methylation had a good diagnostic performance for discriminating CRC tissues from normal adjacent tissues (AUC > 0.8). A panel of SPG20, FBN1, and SEPT9 methylation had a higher diagnostic value than that of any single biomarker and other panels in tissue-based assay (AUC > 0.9). The methylation of FBN1(a) and SPG20(a) regions, as the closest region to the first coding sequence (CDS), had a good diagnostic performance in plasma cfDNA (AUC > 0.8) while a panel consisted of FBN1(a) and SPG20(a) regions showed excellent diagnostic performance for CRC detection in plasma cfDNA (AUC > 0.9). CONCLUSION Methylation of FBN1(a) and SPG20(a) promoter regions in the plasma cfDNA can be an excellent simple, non-invasive blood-based test for early detection of CRC.
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Affiliation(s)
- Maryam Alizadeh-Sedigh
- Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Sadegh Fazeli
- Department of Surgery, Division of Colorectal Surgery, Imam Khomeini Medical Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Habibollah Mahmoodzadeh
- Cancer Institute of Iran, Imam Khomeini Medical Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahin Behrouz Sharif
- Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Ladan Teimoori-Toolabi
- Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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Results of Compliant Participation in Five Rounds of Fecal Immunochemical Test Screening for Colorectal Cancer. Clin Gastroenterol Hepatol 2021; 19:2361-2369. [PMID: 32827723 DOI: 10.1016/j.cgh.2020.08.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 08/13/2020] [Accepted: 08/17/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS We investigated the magnitude and temporal patterns of the decreasing trend in main performance measures of fecal immunochemical test (FIT) screening for colorectal cancer (CRC) observed in second and subsequent rounds. METHODS We followed up 494,187 participants from the first round of a regional biennial FIT screening program in Italy (cut-off value for positivity, 20 μg hemoglobin/g feces) for 5 total rounds (2005-2016). At each round, only compliant participants were eligible. Performance measures from the first, third, fourth, and fifth rounds were compared with those from the second round (the first incidence round) using rate ratios from multivariate Poisson regression models and relative risk ratios from multinomial logistic regression models. RESULTS Between the second and the third rounds, a significant 20% to 30% decrease was found in the proportion of men with a positive FIT result (from 5.2% to 4.3%) and in detection rates of advanced adenoma (from 13.4 to 10.2 per 1000), CRC (from 1.7 to 1.4 per 1000), and advanced neoplasia (from 15.1 to 11.6 per 1000). Positive predictive values (PPVs) decreased by 10% or less between the second and third rounds. Detection rates and PPVs for adenoma stabilized by the fourth and fifth rounds. The PPVs for advanced adenoma, CRC, and advanced neoplasia decreased slightly in men and women by the fourth and fifth rounds. The detection rate of proximal colon cancer stabilized after the second round, whereas the detection rate of distal colon cancer decreased until the fourth round in men (from 0.7 to 0.3 per 1000), and the fifth round in women. CONCLUSIONS These findings support the notion that FIT screening prevents progression of a subset of advanced adenomas. Screening intensity could be modulated based on results from previous rounds, with a risk-based strategy.
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Significant decrease in interval colorectal cancer incidence after implementing immunochemical testing in a multiple-round guaiac-based screening programme. Br J Cancer 2021; 125:1494-1502. [PMID: 34511603 DOI: 10.1038/s41416-021-01546-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/04/2021] [Accepted: 09/03/2021] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND AND AIMS We aimed to evaluate the effects of switching to faecal immunochemical testing (FIT) on the cumulative 2-year incidence rate of interval cancers, interval cancer rate and test sensitivity within a mature population-based colorectal cancer screening programme consisting of six rounds of biennial guaiac faecal occult blood testing (gFOBT). METHODS The FIT results were compared with those of gFOBT used in each of the previous two rounds. For the three rounds analysed, 279,041 tests were performed by 156,186 individuals. Logistic regression analysis was used to determine interval cancer risk factors (Poisson regression) and to compare the sensitivity of FIT to gFOBT. RESULTS There were 612 cases of screen-detected cancers and 209 cases of interval cancers. The sex- and age-adjusted cumulative 2-year incidence rates of interval cancers were 55.7 (95% CI, 45.3-68.5), 42.4 (95% CI, 32.6-55.2) and 15.8 (95% CI, 10.9-22.8) per 100,000 person-years after the last two rounds of gFOBT and FIT, respectively. The FIT/gFOBT incidence rate ratio was 0.38 [95% CI, 0.27-0.54] (P < 0.001). Sex- and age-adjusted sensitivity was significantly higher with FIT than with gFOBT (OR = 6.70 [95% CI, 4.48-10.01], P < 0.0001). CONCLUSIONS This population-based study revealed a dramatic decrease in the cumulative incidence rates of interval cancers after switching from gFOBT to FIT. These data provide an additional incentive for countries still using gFOBT to switch to FIT.
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Sin RWY, Foo DCC, Iyer DN, Fan MSY, Li X, Lo OSH, Law WL, Ng L. A Pilot Study Investigating the Expression Levels of Pluripotency-Associated Genes in Rectal Swab Samples for Colorectal Polyp and Cancer Diagnosis and Prognosis. Stem Cells Int 2021; 2021:4139528. [PMID: 34335790 PMCID: PMC8324395 DOI: 10.1155/2021/4139528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 12/11/2020] [Accepted: 06/09/2021] [Indexed: 02/06/2023] Open
Abstract
Change in gene expression is inevitable in cancer development. With more studies demonstrating the contributions of cancer stem cells (CSCs) in colorectal cancer (CRC) development, this study is aimed at investigating whether rectal swab specimen serves as a tool for detection of dysregulation of CSC or stem cell (SC) markers and at evaluating its potential as a new promising screening method for high-risk patients. Expression levels of 15 pluripotency-associated genes were assessed by quantitative PCR in 53 rectal swab specimens referred for endoscopic screening. Dysregulated genes and joint panels based on such genes were examined for their diagnostic potentials for both polyp and CRC. Out of 15 genes, Oct4, CD26, c-MYC, and CXCR4 showed significantly differential expression among normal, polyp, and CRC patients. A panel of Oct4 and CD26 showed an AUC value of 0.80 (p = 0.003) in identifying CRC patients from polyp/normal subjects, with sensitivity and specificity of 84.6% and 69.2%. A panel of c-MYC and CXCR4 achieved CRC/polyp identification with an AUC value of 0.79 (p = 0.002), with a sensitivity of 82.8% and specificity of 80.0%. The sensitivity for polyp and CRC was 80.0% and 85.7%, respectively. Further analysis showed that higher c-MYC and CXCR4 level was detected in normal subjects who developed polyps after 5-6 years, in comparison with subjects with no lesion developed, and the AUC of the c-MYC and CXCR4 panel increased to 0.88 (p < 0.001), with sensitivity and specificity of 84.4% and 92.3%, respectively, when these patients were included in the polyp group. This study suggests that the Oct4 and CD26 panel is a promising biomarker for distinguishing CRC from normal and polyp patients, whereas the c-MYC and CXCR4 panel may identify polyp and CRC from normal individuals.
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Affiliation(s)
- Ryan Wai-Yan Sin
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Dominic Chi-Chung Foo
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Deepak Narayanan Iyer
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - May Sau-Yee Fan
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Xue Li
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Oswens Siu-Hung Lo
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Wai-Lun Law
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Lui Ng
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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Holtedahl K, Borgquist L, Donker GA, Buntinx F, Weller D, Campbell C, Månsson J, Hammersley V, Braaten T, Parajuli R. Symptoms and signs of colorectal cancer, with differences between proximal and distal colon cancer: a prospective cohort study of diagnostic accuracy in primary care. BMC FAMILY PRACTICE 2021; 22:148. [PMID: 34238248 PMCID: PMC8268573 DOI: 10.1186/s12875-021-01452-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 05/05/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND In an abdominal symptom study in primary care in six European countries, 511 cases of cancer were recorded prospectively among 61,802 patients 16 years and older in Norway, Denmark, Sweden, Netherlands, Belgium and Scotland. Colorectal cancer is one of the main types of cancer associated with abdominal symptoms; hence, an in-depth subgroup analysis of the 94 colorectal cancers was carried out in order to study variation in symptom presentation among cancers in different anatomical locations. METHOD Initial data capture was by completion of standardised forms containing closed questions about symptoms recorded during the consultation. Follow-up data were provided by the GP after diagnosis, based on medical record data made after the consultation. GPs also provided free text comments about the diagnostic procedure for individual patients. Fisher's exact test was used to analyse differences between groups. RESULTS Almost all symptoms recorded could indicate colorectal cancer. 'Rectal bleeding' had a specificity of 99.4% and a PPV of 4.0%. Faecal occult blood in stool (FOBT) or anaemia may indicate gastrointestinal bleeding: when these symptoms and signs were combined, sensitivity reached 57.5%, with 69.2% for cancer in the distal colon. For proximal colon cancers, none of 18 patients had 'Rectal bleeding' at the initial consultation, but three of the 18 did so at a later consultation. 'Abdominal pain, lower part', 'Constipation' and 'Distended abdomen, bloating' were less specific and also less sensitive than 'Rectal bleeding', and with PPV between 0.7% and 1.9%. CONCLUSIONS Apart from rectal bleeding, single symptoms did not reach the PPV 3% NICE threshold. However, supplementary information such as a positive FOBT or persistent symptoms may revise the PPV upwards. If a colorectal cancer is suspected by the GP despite few symptoms, the total clinical picture may still reach the NICE PPV threshold of 3% and justify a specific referral.
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Affiliation(s)
- Knut Holtedahl
- Department of Community Medicine, UiT The Arctic University of Norway, 9037 Breivika, Tromsø, Norway
| | - Lars Borgquist
- Department of Health, Medicine and Caring Sciences, Linköping University, 58183 Linköping, Sweden
| | - Gé A. Donker
- Netherlands Institute of Health Services Research, Otterstraat 118, Utrecht, 3513 the Netherlands
| | - Frank Buntinx
- Department of General Practice, KU Leuven, Oude Markt 13, 3000 Leuven, Belgium
- Maastricht University, P.O. Box 616, Maastricht, 6200 The Netherlands
| | - David Weller
- Usher Institute of Population Health Sciences and Medical Informatics, University of Edinburgh, Edinburgh, EH8 9AG UK
| | - Christine Campbell
- Usher Institute of Population Health Sciences and Medical Informatics, University of Edinburgh, Edinburgh, EH8 9AG UK
| | - Jörgen Månsson
- Department of Public Health and Community Medicine/Primary Health Care, University of Gothenburg, Box 100, 40530 Gothenburgh, Sweden
| | - Victoria Hammersley
- Usher Institute of Population Health Sciences and Medical Informatics, University of Edinburgh, Edinburgh, EH8 9AG UK
| | - Tonje Braaten
- Department of Community Medicine, UiT The Arctic University of Norway, 9037 Breivika, Tromsø, Norway
| | - Ranjan Parajuli
- Faculty of Nursing and Health Sciences, Nord University, P.O.Box 1490, 8049 Bodø, Norway
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Ibáñez-Sanz G, Milà N, Vidal C, Rocamora J, Moreno V, Sanz-Pamplona R, Garcia M. Positive impact of a faecal-based screening programme on colorectal cancer mortality risk. PLoS One 2021; 16:e0253369. [PMID: 34191813 PMCID: PMC8244848 DOI: 10.1371/journal.pone.0253369] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 05/27/2021] [Indexed: 01/05/2023] Open
Abstract
INTRODUCTION The effectiveness of colorectal cancer (CRC) screening programs is directly related to participation and the number of interval CRCs. The objective was to analyse specific-mortality in a cohort of individuals invited to a CRC screening program according to type of CRC diagnosis (screen-detected cancers, interval cancers, and cancers among the non-uptake group). MATERIAL AND METHODS Retrospective cohort that included invitees aged 50-69 years of a CRC screening program (target population of 85,000 people) in Catalonia (Spain) from 2000-2015 with mortality follow-up until 2020. A screen-detected CRC was a cancer diagnosed after a positive faecal occult blood test (guaiac or immunochemical); an interval cancer was a cancer diagnosed after a negative test result and before the next invitation to the program (≤24 months); a non-uptake cancer was a cancer in subjects who declined screening. RESULTS A total of 624 people were diagnosed with CRC (n = 265 screen-detected, n = 103 interval cancers, n = 256 non-uptake). In the multivariate analysis, we observed a 74% increase in mortality rate in the group with interval CRC compared to screen-detected CRC adjusted for age, sex, location and stage (HR: 1.74%, 95% CI:1.08-2.82, P = 0.02). These differences were found even when we restricted for advanced-cancers participants. In the stratified analysis for type of faecal occult blood test, a lower mortality rate was only observed among FIT screen-detected CRCs. CONCLUSION CRC screening with the FIT was associated with a significant reduction in CRC mortality.
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Affiliation(s)
- Gemma Ibáñez-Sanz
- Oncology Data Analytics Program (ODAP), Catalan Institute of Oncology-IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
- Gastroenterology Department, Bellvitge University Hospital -IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
- Colorectal Cancer research group, ONCOBELL Programme, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain
- CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Núria Milà
- CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Cancer Screening Unit, Prevention and Control Programme, Catalan Institute of Oncology-IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
- Early Detection of Cancer Research Group, EPIBELL Program, Bellvitge Biomedical Research Institute, L’Hospitalet de Llobregat, Barcelona, Spain
| | - Carmen Vidal
- Cancer Screening Unit, Prevention and Control Programme, Catalan Institute of Oncology-IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
- Early Detection of Cancer Research Group, EPIBELL Program, Bellvitge Biomedical Research Institute, L’Hospitalet de Llobregat, Barcelona, Spain
| | - Judith Rocamora
- Oncology Data Analytics Program (ODAP), Catalan Institute of Oncology-IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
- CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Víctor Moreno
- Oncology Data Analytics Program (ODAP), Catalan Institute of Oncology-IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
- Colorectal Cancer research group, ONCOBELL Programme, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain
- CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Department of Clinical Sciences, Faculty of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
| | - Rebeca Sanz-Pamplona
- Oncology Data Analytics Program (ODAP), Catalan Institute of Oncology-IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
- Colorectal Cancer research group, ONCOBELL Programme, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), L’Hospitalet de Llobregat, Barcelona, Spain
- CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Montse Garcia
- CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Cancer Screening Unit, Prevention and Control Programme, Catalan Institute of Oncology-IDIBELL, L’Hospitalet de Llobregat, Barcelona, Spain
- Early Detection of Cancer Research Group, EPIBELL Program, Bellvitge Biomedical Research Institute, L’Hospitalet de Llobregat, Barcelona, Spain
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13
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Ibáñez-Sanz G, Sanz-Pamplona R, Garcia M. Future Prospects of Colorectal Cancer Screening: Characterizing Interval Cancers. Cancers (Basel) 2021; 13:1328. [PMID: 33809520 PMCID: PMC8001713 DOI: 10.3390/cancers13061328] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/06/2021] [Accepted: 03/13/2021] [Indexed: 12/11/2022] Open
Abstract
Tumors that are not detected by screening tests are known as interval cancers and are diagnosed clinically after a negative result in the screening episode but before the next screening invitation. Clinical characteristics associated with interval colorectal cancers have been studied, but few molecular data are available that describe interval colorectal cancers. A better understanding of the clinical and biological characteristics associated with interval colorectal cancer may provide new insights into how to prevent this disease more effectively. This review aimed to summarize the current literature concerning interval colorectal cancer and its epidemiological, clinical, and molecular features.
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Affiliation(s)
- Gemma Ibáñez-Sanz
- Oncology Data Analytics Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, 08907 Barcelona, Spain;
- Gastroenterology Department, Bellvitge University Hospital, Hospitalet de Llobregat, 08907 Barcelona, Spain
- Colorectal Cancer Research Group, ONCOBELL Programme, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Hospitalet de Llobregat, 08907 Barcelona, Spain
- CIBER Epidemiology and Public Health (CIBERESP), 28029 Madrid, Spain
| | - Rebeca Sanz-Pamplona
- Oncology Data Analytics Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, 08907 Barcelona, Spain;
- Colorectal Cancer Research Group, ONCOBELL Programme, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Hospitalet de Llobregat, 08907 Barcelona, Spain
- CIBER Epidemiology and Public Health (CIBERESP), 28029 Madrid, Spain
| | - Montse Garcia
- CIBER Epidemiology and Public Health (CIBERESP), 28029 Madrid, Spain
- Cancer Screening Unit, Prevention and Control Programme, Catalan Institute of Oncology, Hospitalet de Llobregat, 08907 Barcelona, Spain
- Early Detection of Cancer Research Group, EPIBELL Programme, Institut d’Investigació Biomèdica de Bellvitge (IDIBELL), Hospitalet de Llobregat, 08907 Barcelona, Spain
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14
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Pin-Vieito N, García Nimo L, Bujanda L, Román Alonso B, Gutierrez-Stampa MÁ, Aguilar-Gama V, Portillo I, Cubiella J. Optimal diagnostic accuracy of quantitative faecal immunochemical test positivity thresholds for colorectal cancer detection in primary health care: A community-based cohort study. United European Gastroenterol J 2021; 9:256-267. [PMID: 32778002 PMCID: PMC8259257 DOI: 10.1177/2050640620949714] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 07/21/2020] [Indexed: 12/13/2022] Open
Abstract
Background Optimizing colonoscopy resources is challenging, and information regarding performing diagnostic quantitative faecal immunochemical test (FIT) in daily clinical practice in primary health care is still limited. This study aimed to assess the sensitivity, specificity, positive predictive value and negative predictive value of varying FIT positivity thresholds on colorectal cancer (CRC) detection in primary health care. Methods A retrospective cohort study of 38,675 asymptomatic and symptomatic patients with a FIT (OC‐Sensor™) performed between 2012 and 2016 in a primary health‐care setting, using a clinical laboratory database of two Spanish areas linked with the National Health System's Hospital Discharge Records Database. The primary outcome was 2‐year CRC incidence. Results The mean age of the participants was 63.2 years; 17,792 (46.0%) were male. CRC prevalence was 1.7% (650/38,675). The percentage of patients with a FIT result above the threshold was 20.7% and 14.6% for 10 μg Hb/g faeces and 20 μg Hb/g faeces thresholds, respectively. Sensitivity was 90.5% (95% confidence interval 88.0%–92.5%) at a 10 μg Hb/g faeces threshold, and this decreased by 3.1% when a 20 μg Hb/g faeces threshold was used. The negative predictive value for CRC was at least 99.2% in any subgroup analysed. At a 20 μg Hb/g faeces threshold, less than one additional CRC would be missed per 1000 patients investigated, while approximately 1.3 times more colonoscopy examinations were needed to identify an incidence of CRC using the lowest threshold for any situation analysed. Conclusions In primary health care, a quantitative FIT threshold should be tailored to colonoscopy capacity and CRC prevalence in specific populations.
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Affiliation(s)
- Noel Pin-Vieito
- Gastroenterology Department, Complexo Hospitalario Universitario de Ourense, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Ourense, Spain.,Instituto de Investigacién Biomédica Galicia Sur, Ourense, Spain.,Department of Biochemistry, Genetics and Immunology, Faculty of Biology, University of Vigo, Vigo, Spain
| | - Laura García Nimo
- Instituto de Investigacién Biomédica Galicia Sur, Ourense, Spain.,Clinical Analysis Department, Complexo Hospitalario Universitario de Ourense, Centro de Investigacién Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Ourense, Spain
| | - Luis Bujanda
- Gastroenterology Department, Donostia Hospital, Biodonostia Institute, CIBERehd, University of the Basque Country UPV/EHU, San Sebastián, Spain
| | - Begona Román Alonso
- Admission and Clinical Documentation Department, Donostia Hospital, San Sebastián, Spain
| | | | - Vanessa Aguilar-Gama
- Osakidetza, OSI Donostialdea, Altza Primary Care; Biodonostia Health Research Institute, San Sebastián, Spain
| | - Isabel Portillo
- Colorectal Cancer Screening Programme, Osakidetza, Basque Health Service, Bilbao, Spain
| | - Joaquín Cubiella
- Gastroenterology Department, Complexo Hospitalario Universitario de Ourense, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Ourense, Spain.,Instituto de Investigacién Biomédica Galicia Sur, Ourense, Spain
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15
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Chiang SF, Huang HH, Tsai WS, Chin-Ming Tan B, Yang CY, Huang PJ, Yi-Feng Chang I, Lin J, Lu PS, Chin E, Liu YH, Yu JS, Chiang JM, Hung HY, You JF, Liu H. Comprehensive functional genomic analyses link APC somatic mutation and mRNA-miRNA networks to the clinical outcome of stage-III colorectal cancer patients. Biomed J 2021; 45:347-360. [PMID: 35550340 PMCID: PMC9250073 DOI: 10.1016/j.bj.2021.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 01/25/2021] [Accepted: 03/04/2021] [Indexed: 02/07/2023] Open
Abstract
Background Colorectal cancer (CRC) is a major health concern globally, but exhibits regional and/or environmental distinctions in terms of outcome especially for patients with stage III CRC. Methods From 2014 to 2016, matched pairs of tumor and adjacent normal tissue samples from 60 patients with stage I–IV CRC from Chang Gung Memorial Hospital in Taiwan were analyzed using next-generation sequencing. The DNA, mRNA, and miRNA sequences of paired tumor tissues were profiled. An observational study with survival analysis was done. Online datasets of The Cancer Genome Atlas (TCGA) and The International Cancer Genome Consortium (ICGC) were also integrated and compared. Results The gene that exhibited the highest mutation rate was adenomatous polyposis coli (APC) (75.0%), followed by TP53 (70.0%), KRAS (56.6%), and TTN (48.3%). APC was also the most frequently mutated gene in TCGA and ICGC datasets. Surprisingly, for non-metastatic cases (stages I-III), CRC patients with mutated APC had better outcome in terms of overall survival (p = 0.041) and recurrence free survival (p = 0.0048). Particularly for stage III CRC, the overall survival rate was 94.4% and 67.7%, respectively (p = 0.018), and the recurrence free survival rate was 94.4% and 16.7%, respectively (p = 0.00044). Further clinical and gene expression analyses revealed that the APC wt specimens to a greater extent exhibit poor differentiation state as well as EGFR upregulation, providing molecular basis for the poor prognosis of these patients. Finally, based on integrated transcriptome analysis, we constructed the mRNA-miRNA networks underlying disease recurrence of the stage III CRC and uncovered potential therapeutic targets for this clinical condition. Conclusion For stage III CRC, patients with mutated APC had better overall and recurrence free survival.
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Affiliation(s)
- Sum-Fu Chiang
- Division of Colon and Rectal Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Heng-Hsuan Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Wen-Sy Tsai
- Division of Colon and Rectal Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Bertrand Chin-Ming Tan
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Neurosurgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Chia-Yu Yang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Microbiology and Immunology, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Otolaryngology-Head & Neck Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Po-Jung Huang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Genomic Medicine Research Core Laboratory, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Ian Yi-Feng Chang
- Department of Neurosurgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Jiarong Lin
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Pei-Shan Lu
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - En Chin
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Hao Liu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Jau-Song Yu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan; Department of Cell and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Liver Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
| | - Jy-Ming Chiang
- Division of Colon and Rectal Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Hsin-Yuan Hung
- Division of Colon and Rectal Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Jeng-Fu You
- Division of Colon and Rectal Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Hsuan Liu
- Division of Colon and Rectal Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan; Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan; Department of Cell and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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16
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Ko CW. A Predictive Model to Identify Individuals at Increased Risk of Colorectal Cancer for Outreach Efforts. Clin Gastroenterol Hepatol 2020; 18:2683-2685. [PMID: 32502518 DOI: 10.1016/j.cgh.2020.05.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 05/26/2020] [Indexed: 02/07/2023]
Affiliation(s)
- Cynthia W Ko
- Division of Gastroenterology, University of Washington School of Medicine, Seattle, Washington
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17
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Barré S, Leleu H, Benamouzig R, Saurin JC, Vimont A, Taleb S, De Bels F. Cost-effectiveness analysis of alternative colon cancer screening strategies in the context of the French national screening program. Therap Adv Gastroenterol 2020; 13:1756284820953364. [PMID: 33014138 PMCID: PMC7509710 DOI: 10.1177/1756284820953364] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 07/31/2020] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND A nationwide colorectal cancer (CRC) screening program was set up in France from 2009 for average-risk, asymptomatic people aged 50-74 years based on an immunochemical fecal occult blood test [faecal immunochemical test (FIT)] every 2 years, followed by colonoscopy if positive. The European standard recommends a participation rate of 45% for the program to be cost-effective, yet the latest published rate in France was 34%. The objective of this study was to compare the cost effectiveness of screening alternatives taking real-world participation rates into account. METHODS Eight screening strategies were compared, based either on a screening test (Guaiac or FIT testing, blood-based, stool DNA, computed tomography colonography, colon capsules, and sigmoidoscopy) followed by full colonoscopy if positive or direct colonoscopy. A microsimulation model was used to estimate the cost effectiveness associated with each strategy. RESULTS Compared with no screening, FIT was associated with a 14.0 quality-adjusted life year (QALY) increase of €50,520 per 1000 individuals, giving an incremental cost-effectiveness ratio (ICER) of €3600/QALY. Only stool DNA and blood-based testing were associated with a QALY increase compared with FIT, with stool DNA weakly dominated by blood-based testing, and the latter associated with an ICER of €154,600/QALY compared with FIT. All other strategies were dominated by FIT. CONCLUSION FIT every 2 years appears to be the most cost-effective CRC screening strategy when taking into account a real-world participation rate of 34%.
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Affiliation(s)
| | - Henri Leleu
- Public Health Expertise, 157 Rue du Faubourg Saint-Antoine, Paris, 75011, France
| | - R. Benamouzig
- Department of Gastroenterology, Hôpital Avicenne (AP-HP), Bobigny, France
| | - Jean-Christophe Saurin
- Department of Endoscopy and Gastroenterology, Pavillon L, Edouard Herriot Hospital (Hospices Civils de Lyon), Lyon, France
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Aberrant Methylation of LINE-1 Transposable Elements: A Search for Cancer Biomarkers. Cells 2020; 9:cells9092017. [PMID: 32887319 PMCID: PMC7563416 DOI: 10.3390/cells9092017] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/26/2020] [Accepted: 08/31/2020] [Indexed: 02/07/2023] Open
Abstract
Cancer remains one of the main causes of human mortality despite significant progress in its diagnostics and therapy achieved in the past decade. Massive hypomethylation of retrotransposons, in particular LINE-1, is considered a hallmark of most malignant transformations as it results in the reactivation of retroelements and subsequent genomic instability. Accumulating data on LINE-1 aberrant methylation in different tumor types indicates its significant role in cancer initiation and progression. However, direct evidence that LINE-1 activation can be used as a cancer biomarker is still limited. The objective of this review was to critically evaluate the published results regarding the diagnostic/prognostic potential of the LINE-1 methylation status in cancer. Our analysis indicates that LINE-1 hypomethylation is a promising candidate biomarker of cancer development, which, however, needs validation in both clinical and laboratory studies to confirm its applicability to different cancer types and/or stages. As LINE-1 is present in multiple cell-free copies in blood, it has advantages over single-copy genes regarding perspectives of using its methylation status as an epigenetic cancer biomarker for cell-free DNA liquid biopsy.
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Kisiel JB, Eckmann JD, Limburg PJ. Multitarget Stool DNA for Average Risk Colorectal Cancer Screening: Major Achievements and Future Directions. Gastrointest Endosc Clin N Am 2020; 30:553-568. [PMID: 32439088 PMCID: PMC10964930 DOI: 10.1016/j.giec.2020.02.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
After 2 screen-setting studies showing high sensitivity for colorectal cancer and advanced precancerous lesions, multitarget stool DNA testing was endorsed by the US Preventative Services Task Force as a first-line colorectal cancer screening test. Uptake has increased exponentially since approval by the US Food and Drug Administration and Centers for Medicare and Medicaid Services. Adherence to testing is approximately 70%. Patients with positive results have high diagnostic colonoscopy completion rates in single-center studies. The positive predictive value for colorectal neoplasia in postapproval studies is high. Next-generation test prototypes show promise to extend specificity gains while maintaining high sensitivity.
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Affiliation(s)
- John B Kisiel
- Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street, Southwest, Rochester, MN 55905, USA.
| | - Jason D Eckmann
- Department of Internal Medicine, Mayo Clinic, 200 First Street, Southwest, Rochester, MN 55905, USA. https://twitter.com/JasonEckmannMD
| | - Paul J Limburg
- Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street, Southwest, Rochester, MN 55905, USA. https://twitter.com/limburg_paul
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20
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Mancini S, Bucchi L, Giuliani O, Ravaioli A, Vattiato R, Baldacchini F, Ferretti S, Sassoli de Bianchi P, Mezzetti F, Triossi O, Serafini M, Ricci E, Palazzi M, Imolesi C, Giovanardi M, Canuti D, Voci C, Altini M, Falcini F. Proportional incidence of interval colorectal cancer in a large population-based faecal immunochemical test screening programme. Dig Liver Dis 2020; 52:452-456. [PMID: 32165075 DOI: 10.1016/j.dld.2020.02.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/23/2020] [Accepted: 02/14/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND The European guidelines for quality assurance in colorectal cancer (CRC) screening recommend that interval cancer rate be expressed as a proportion of background incidence rate. AIM To determine the crude and adjusted proportional incidence of interval CRC in an Italian regional two-yearly faecal immunochemical test (FIT) screening programme. METHODS The programme (year of implementation, 2005) is targeted at over 1,000,000 people aged 50-69 years. The test is a one-sample OC-Sensor (Eiken Chemical Co., Tokyo, Japan). The study covered one-third of the regional area. Excerpts of 434,295 eligible negative FIT records dated 2005-2012 from 193,193 subjects were retrieved from the regional CRC screening data warehouse. By 31 December 2013, the cohort accumulated 198,302 man-years and 235,370 woman-years. Interval CRCs were identified by record-linkage with the local population-based cancer registry. Their number was divided by the expected number, estimated with age-period-cohort models, to obtain the proportional incidence. RESULTS The proportional incidence of interval CRC for men and women was, respectively, 0.06 (95% confidence interval (CI), 0.04-0.09) and 0.17 (95% CI, 0.13-0.23) in the first interval year, and 0.21 (95% CI, 0.16-0.26) and 0.28 (95% CI, 0.22-0.36) in the second year. CONCLUSIONS The results were acceptable and in line with previous studies.
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Affiliation(s)
- Silvia Mancini
- Romagna Cancer Registry, Romagna Cancer Institute, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, IRST, IRCCS, Meldola, Italy
| | - Lauro Bucchi
- Romagna Cancer Registry, Romagna Cancer Institute, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, IRST, IRCCS, Meldola, Italy.
| | - Orietta Giuliani
- Romagna Cancer Registry, Romagna Cancer Institute, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, IRST, IRCCS, Meldola, Italy
| | - Alessandra Ravaioli
- Romagna Cancer Registry, Romagna Cancer Institute, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, IRST, IRCCS, Meldola, Italy
| | - Rosa Vattiato
- Romagna Cancer Registry, Romagna Cancer Institute, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, IRST, IRCCS, Meldola, Italy
| | - Flavia Baldacchini
- Romagna Cancer Registry, Romagna Cancer Institute, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, IRST, IRCCS, Meldola, Italy
| | - Stefano Ferretti
- University of Ferrara and Local Health Authority, Ferrara, Italy
| | | | - Francesca Mezzetti
- Department of Health, Emilia-Romagna Regional Administration, Bologna, Italy
| | - Omero Triossi
- Cancer Screening Unit, Local Health Authority, Ravenna, Italy
| | - Monica Serafini
- Cancer Screening Unit, Local Health Authority, Ravenna, Italy
| | - Enrico Ricci
- Department of Gastroenterology and Digestive Endoscopy, Local Health Authority, Morgagni-Pierantoni Hospital, Forlì, Italy
| | - Mauro Palazzi
- Cancer Screening Unit, Local Health Authority, Cesena, Italy
| | - Claudia Imolesi
- Cancer Screening Unit, Local Health Authority, Cesena, Italy
| | | | - Debora Canuti
- Cancer Screening Unit, Local Health Authority, Rimini, Italy
| | - Claudio Voci
- Servizio ICT, Tecnologie e Strutture Sanitarie, Department of Health, Emilia-Romagna Regional Administration, Bologna, Italy
| | - Mattia Altini
- Healthcare Administration, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, IRST, IRCCS, Meldola, Italy
| | - Fabio Falcini
- Romagna Cancer Registry, Romagna Cancer Institute, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori, IRST, IRCCS, Meldola, Italy; Cancer Prevention Unit, Local Health Authority, Forlì, Italy
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21
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Multitarget Stool DNA Screening in Clinical Practice: High Positive Predictive Value for Colorectal Neoplasia Regardless of Exposure to Previous Colonoscopy. Am J Gastroenterol 2020; 115:608-615. [PMID: 32068535 PMCID: PMC7127971 DOI: 10.14309/ajg.0000000000000546] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Multitarget stool DNA (MT-sDNA) testing has grown as a noninvasive screening modality for colorectal cancer (CRC), but real-world clinical data are limited in the post-FDA approval setting. The effect of previous colonoscopy on MT-sDNA performance is not known. We aimed to evaluate findings of colorectal neoplasia (CRN) at diagnostic colonoscopy in patients with positive MT-sDNA testing, stratified by patient exposure to previous colonoscopy. METHODS We identified consecutive patients completing MT-sDNA testing over a 39-month period and reviewed the records of those with positive tests for neoplastic findings at diagnostic colonoscopy. MT-sDNA test positivity rate, adherence to diagnostic colonoscopy, and the positive predictive value (PPV) of MT-sDNA for any CRN and neoplastic subtypes were calculated. RESULTS Of 16,469 MT-sDNA tests completed, testing returned positive in 2,326 (14.1%) patients. After exclusion of patients at increased risk for CRC, 1,801 patients remained, 1,558 (87%) of whom underwent diagnostic colonoscopy; 918 of 1,558 (59%) of these patients had undergone previous colonoscopy, whereas 640 (41%) had not. Any CRN was found in 1,046 of 1,558 patients (PPV = 67%). More neoplastic lesions were found in patients without previous colonoscopy (73%); however, the rates remained high among those who had undergone previous colonoscopy (63%, P < 0.0001). The large majority (79%) of patients had right-sided neoplasia. DISCUSSION MT-sDNA has a high PPV for any CRN regardless of exposure to previous colonoscopy. Right-sided CRN was found at colonoscopy in most patients with positive MT-sDNA testing, representing a potential advantage over other currently available screening modalities for CRC.
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Eckmann JD, Ebner DW, Kisiel JB. Multi-Target Stool DNA Testing for Colorectal Cancer Screening: Emerging Learning on Real-world Performance. CURRENT TREATMENT OPTIONS IN GASTROENTEROLOGY 2020; 18:109-119. [PMID: 31965446 PMCID: PMC10966619 DOI: 10.1007/s11938-020-00271-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW Multi-target stool DNA (MT-sDNA) was approved in 2014 for use in screening average-risk patients for colorectal cancer (CRC). Here, we highlight recent literature from post-market studies to provide an update on clinical use and utility not possible from pre-approval studies. RECENT FINDINGS MT-sDNA has been included in major society guidelines as an option for colorectal cancer screening, and has seen exponentially increasing use in clinical practice. MT-sDNA appears to be attracting new patients to CRC screening, and patient adherence to diagnostic colonoscopy after a positive MT-sDNA test is high. Approximately two-thirds of these patients are found to have colorectal neoplasia (CRN), 80% of whom have at least one right-sided lesion; 1 in 3 will have advanced CRN. High yield of CRN is due not only to post-screening increase in probability but also likely improved endoscopist attention. In those with a negative high-quality colonoscopy after positive MT-sDNA test ("false positive MT-sDNA"), further interventions do not appear to be necessary. SUMMARY MT-sDNA is a promising tool to improve rates and quality of CRC screening. Further investigation should examine MT-sDNA performance in populations at increased risk for CRC, and as an interval test after colonoscopy to detect potentially missed lesions.
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Affiliation(s)
- Jason D Eckmann
- Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA
| | - Derek W Ebner
- Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55902, USA
| | - John B Kisiel
- Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55902, USA.
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Abstract
OBJECTIVES Specific microRNA (miRNA) signatures in biological fluids can facilitate earlier detection of the tumors being then minimally invasive diagnostic biomarkers. Circulating miRNAs have also emerged as promising diagnostic biomarkers for colorectal cancer (CRC) screening. In this study, we investigated the performance of a specific signature of miRNA in plasma samples to design a robust predictive model that can distinguish healthy individuals from those with CRC or advanced adenomas (AA) diseases. METHODS Case control study of 297 patients from 8 Spanish centers including 100 healthy individuals, 101 diagnosed with AA, and 96 CRC cases. Quantitative real-time reverse transcription was used to quantify a signature of miRNA (miRNA19a, miRNA19b, miRNA15b, miRNA29a, miRNA335, and miRNA18a) in plasma samples. Binary classifiers (Support Vector Machine [SVM] linear, SVM radial, and SVM polynomial) were built for the best predictive model. RESULTS Area under receiving operating characteristic curve of 0.92 (95% confidence interval 0.871-0.962) was obtained retrieving a model with a sensitivity of 0.85 and specificity of 0.90, positive predictive value of 0.94, and negative predictive value of 0.76 when advanced neoplasms (CRC and AA) were compared with healthy individuals. CONCLUSIONS We identified and validated a signature of 6 miRNAs (miRNA19a, miRNA19b, miRNA15b, miRNA29a, miRNA335, and miRNA18a) as predictors that can differentiate significantly patients with CRC and AA from those who are healthy. However, large-scale validation studies in asymptomatic screening participants should be conducted.
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Hasegawa R, Yashima K, Ikebuchi Y, Sasaki S, Yoshida A, Kawaguchi K, Isomoto H. Characteristics of Advanced Colorectal Cancer Detected by Fecal Immunochemical Test Screening in Participants with a Negative Result the Previous Year. Yonago Acta Med 2020; 63:63-69. [PMID: 32158335 PMCID: PMC7028528 DOI: 10.33160/yam.2020.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 01/24/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND There is sufficient evidence to show the mortality reduction effect of colorectal cancer (CRC) screening programs using the fecal occult blood test (FOBT). However, we see cases that are found to be advanced CRC despite yearly FOBT screening. METHODS The aim of this study was to investigate the characteristics of advanced CRC detected by a fecal immunochemical test (FIT) screening program in participants with a negative screening result the previous year, which we call "Negative advanced CRC". A total of 109,639 participants (10.0% required colonoscopy, of whom 76.9% received one) underwent a CRC screening program using a FIT from fiscal 2009 to 2017. Negative advanced CRC was compared with advanced CRC (First advanced CRC) found at the first visit in a person who had not had a FIT screening history for more than 3 years. In addition, we compared the characteristics of Negative advanced CRC with those of interval cancer: cancer cases detected after a negative screening result and before the date of the next recommended screening. RESULTS A total of 339 cases of CRC (175 male: 164 female, 173 early stage: 166 advanced stage) were detected in the nine-year CRC screening period. The rate of right-sided CRCs was significantly higher in female (P < 0.01), advanced stage (P < 0.01), negative result previous year (P < 0.01), and symptom-negative (P < 0.01) participants than in each counterpart, respectively. The ratio of female (22/35; 62.9%) patients in Negative advanced CRCs tended to be high compared with that (40/83; 48.2%) in First advanced CRCs (P = 0.145). Overall, 22 (62.9%) of 35 Negative advanced CRCs and 28 (33.7%) of 83 First advanced CRCs were located in the right-sided colon, and the rate was significantly higher in Negative advanced CRCs (P < 0.01). In addition, the frequency of female patients was significantly higher in right-sided Negative advanced CRCs than in right-sided First advanced CRCs (P = 0.03). CONCLUSION The characteristics of Negative advanced CRC cases (female and right-sided colon) were similar to those of interval cancer reported so far. In the future, it will be necessary to introduce a screening program that is highly sensitive to right-sided CRC.
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Affiliation(s)
- Ryosuke Hasegawa
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504 Japan
| | - Kazuo Yashima
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504 Japan
| | - Yuichiro Ikebuchi
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504 Japan
| | - Shuji Sasaki
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504 Japan
| | - Akira Yoshida
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504 Japan
| | - Koichiro Kawaguchi
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504 Japan
| | - Hajime Isomoto
- Division of Medicine and Clinical Science, Department of Multidisciplinary Internal Medicine, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504 Japan
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Circulating Extracellular Vesicle MicroRNA as Diagnostic Biomarkers in Early Colorectal Cancer-A Review. Cancers (Basel) 2019; 12:cancers12010052. [PMID: 31878015 PMCID: PMC7016718 DOI: 10.3390/cancers12010052] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/11/2019] [Accepted: 12/13/2019] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most common malignancies in the developed world, with global deaths expected to double in the next decade. Disease stage at diagnosis is the single greatest prognostic indicator for long-term survival. Unfortunately, early stage CRC is often asymptomatic and diagnosis frequently occurs at an advanced stage, where long-term survival can be as low as 14%. Circulating microRNAs encapsulated in extracellular vesicles (EVs) have recently come to prominence as novel diagnostic markers for cancer. EV-miRNAs are dysregulated in the circulation of CRC patients compared to healthy controls, and several specific miRNA candidates have been posited as diagnostic markers, including miR-21, miR-23a, miR-1246, and miR-92a. This review outlines the current landscape of EV-miRNAs as potential diagnostic markers for CRC, with a specific focus on those able to detect early stage disease.
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Paterson AL, Gehrung M, Fitzgerald RC, O'Donovan M. Role of TFF3 as an adjunct in the diagnosis of Barrett's esophagus using a minimally invasive esophageal sampling device-The Cytosponge TM. Diagn Cytopathol 2019; 48:253-264. [PMID: 31814330 DOI: 10.1002/dc.24354] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 10/06/2019] [Accepted: 11/06/2019] [Indexed: 12/21/2022]
Abstract
The incidence of esophageal carcinoma continues to increase whilst its prognosis remains poor. The most dramatic reduction in mortality is likely to follow early diagnosis of the preinvasive precursor lesion, Barrett's esophagus (BE), coupled with treatment of dysplastic lesions. The major risk factor for BE is gastroesophageal reflux disease, however this is highly prevalent and only a small proportion of individuals have BE, therefore an endoscopy-based screening strategy to detect BE is unfeasible. Minimally invasive esophageal sampling devices offer an alternative, cost-effective strategy which can be deployed within an at-risk population in a primary care setting to identify individuals with probable BE who can then be referred for endoscopic confirmation. The device that has currently progressed furthest in clinical trials is the CytospongeTM which collects cells from the gastric cardia, gastroesophageal junction and along the whole esophageal length. The cell sample is processed into a formalin-fixed paraffin-embedded block and sections assessed for the presence of intestinal metaplasia. TFF3 immunohistochemistry has consistently been shown to be a valuable adjunct that increases the accuracy of the CytospongeTM test by highlighting early goblet cells which may be missed on morphological assessment and by allowing pseudogoblet cells to be differentiated from true goblet cells.
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Affiliation(s)
- Anna L Paterson
- Department of Histopathology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Marcel Gehrung
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK.,MRC Cancer Unit, Hutchison/MRC Research Centre, Cambridge, UK
| | | | - Maria O'Donovan
- Department of Histopathology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK.,MRC Cancer Unit, Hutchison/MRC Research Centre, Cambridge, UK
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Jahn B, Sroczynski G, Bundo M, Mühlberger N, Puntscher S, Todorovic J, Rochau U, Oberaigner W, Koffijberg H, Fischer T, Schiller-Fruehwirth I, Öfner D, Renner F, Jonas M, Hackl M, Ferlitsch M, Siebert U. Effectiveness, benefit harm and cost effectiveness of colorectal cancer screening in Austria. BMC Gastroenterol 2019; 19:209. [PMID: 31805871 PMCID: PMC6896501 DOI: 10.1186/s12876-019-1121-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 11/17/2019] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Clear evidence on the benefit-harm balance and cost effectiveness of population-based screening for colorectal cancer (CRC) is missing. We aim to systematically evaluate the long-term effectiveness, harms and cost effectiveness of different organized CRC screening strategies in Austria. METHODS A decision-analytic cohort simulation model for colorectal adenoma and cancer with a lifelong time horizon was developed, calibrated to the Austrian epidemiological setting and validated against observed data. We compared four strategies: 1) No Screening, 2) FIT: annual immunochemical fecal occult blood test age 40-75 years, 3) gFOBT: annual guaiac-based fecal occult blood test age 40-75 years, and 4) COL: 10-yearly colonoscopy age 50-70 years. Predicted outcomes included: benefits expressed as life-years gained [LYG], CRC-related deaths avoided and CRC cases avoided; harms as additional complications due to colonoscopy (physical harm) and positive test results (psychological harm); and lifetime costs. Tradeoffs were expressed as incremental harm-benefit ratios (IHBR, incremental positive test results per LYG) and incremental cost-effectiveness ratios [ICER]. The perspective of the Austrian public health care system was adopted. Comprehensive sensitivity analyses were performed to assess uncertainty. RESULTS The most effective strategies were FIT and COL. gFOBT was less effective and more costly than FIT. Moving from COL to FIT results in an incremental unintended psychological harm of 16 additional positive test results to gain one life-year. COL was cost saving compared to No Screening. Moving from COL to FIT has an ICER of 15,000 EUR per LYG. CONCLUSIONS Organized CRC-screening with annual FIT or 10-yearly colonoscopy is most effective. The choice between these two options depends on the individual preferences and benefit-harm tradeoffs of screening candidates.
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Affiliation(s)
- Beate Jahn
- Institute of Public Health, Medical Decision Making and Health Technology Assessment; Department of Public Health, Health Services Research and Health Technology Assessment, UMIT - University for Health Sciences, Medical Informatics and Technology, Eduard-Wallnoefer-Zentrum 1, A-6060, Hall in Tirol, Austria
| | - Gaby Sroczynski
- Institute of Public Health, Medical Decision Making and Health Technology Assessment; Department of Public Health, Health Services Research and Health Technology Assessment, UMIT - University for Health Sciences, Medical Informatics and Technology, Eduard-Wallnoefer-Zentrum 1, A-6060, Hall in Tirol, Austria
| | - Marvin Bundo
- Institute of Public Health, Medical Decision Making and Health Technology Assessment; Department of Public Health, Health Services Research and Health Technology Assessment, UMIT - University for Health Sciences, Medical Informatics and Technology, Eduard-Wallnoefer-Zentrum 1, A-6060, Hall in Tirol, Austria
| | - Nikolai Mühlberger
- Institute of Public Health, Medical Decision Making and Health Technology Assessment; Department of Public Health, Health Services Research and Health Technology Assessment, UMIT - University for Health Sciences, Medical Informatics and Technology, Eduard-Wallnoefer-Zentrum 1, A-6060, Hall in Tirol, Austria
| | - Sibylle Puntscher
- Institute of Public Health, Medical Decision Making and Health Technology Assessment; Department of Public Health, Health Services Research and Health Technology Assessment, UMIT - University for Health Sciences, Medical Informatics and Technology, Eduard-Wallnoefer-Zentrum 1, A-6060, Hall in Tirol, Austria
| | - Jovan Todorovic
- Institute of Public Health, Medical Decision Making and Health Technology Assessment; Department of Public Health, Health Services Research and Health Technology Assessment, UMIT - University for Health Sciences, Medical Informatics and Technology, Eduard-Wallnoefer-Zentrum 1, A-6060, Hall in Tirol, Austria
| | - Ursula Rochau
- Institute of Public Health, Medical Decision Making and Health Technology Assessment; Department of Public Health, Health Services Research and Health Technology Assessment, UMIT - University for Health Sciences, Medical Informatics and Technology, Eduard-Wallnoefer-Zentrum 1, A-6060, Hall in Tirol, Austria
| | - Willi Oberaigner
- Institute of Public Health, Medical Decision Making and Health Technology Assessment; Department of Public Health, Health Services Research and Health Technology Assessment, UMIT - University for Health Sciences, Medical Informatics and Technology, Eduard-Wallnoefer-Zentrum 1, A-6060, Hall in Tirol, Austria
| | - Hendrik Koffijberg
- Health Technology and Services Research, University of Twente, Enschede, The Netherlands
| | - Timo Fischer
- Main Association of Austrian Social Security Institutions, Vienna, Austria
| | | | - Dietmar Öfner
- Department of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Friedrich Renner
- Faculty of Medicine, Johannes Kepler University Linz, Linz, Austria
| | - Michael Jonas
- Medical Association of Vorarlberg, Dornbirn, Austria
| | | | - Monika Ferlitsch
- Department of Internal Medicine III; Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria.,Quality Assurance Working Group of Austrian Society of Gastroenterology and Hepatology, Vienna, Austria
| | - Uwe Siebert
- Institute of Public Health, Medical Decision Making and Health Technology Assessment; Department of Public Health, Health Services Research and Health Technology Assessment, UMIT - University for Health Sciences, Medical Informatics and Technology, Eduard-Wallnoefer-Zentrum 1, A-6060, Hall in Tirol, Austria. .,Division of Health Technology Assessment and Bioinformatics, ONCOTYROL - Center for Personalized Cancer Medicine, Innsbruck, Austria. .,Center for Health Decision Science; Department of Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, MA, USA. .,Institute for Technology Assessment and Department of Radiology, Massachusetts General Hospital; Harvard Medical School, Boston, MA, USA.
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Lu M, Luo X, Li N, Chen H, Dai M. Diagnostic Accuracy Of Fecal Occult Blood Tests For Detecting Proximal Versus Distal Colorectal Neoplasia: A Systematic Review And Meta-Analysis. Clin Epidemiol 2019; 11:943-954. [PMID: 31695506 PMCID: PMC6821070 DOI: 10.2147/clep.s213677] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 09/16/2019] [Indexed: 12/24/2022] Open
Abstract
Objective We conducted a systematic review and meta-analysis aimed at evaluating the differences of diagnostic performance of fecal occult blood tests (FOBTs) in detecting advanced colorectal neoplasms located in the proximal versus distal colorectum. Methods PubMed, Embase, Cochrane Library, and Web of Science were searched for eligible articles published before August 17, 2018. Two independent reviewers conducted study assessment and data extraction. Diagnosis-related indicators of FOBT for detecting proximal and distal colorectal neoplasms were summarized, and further stratified by the type of FOBT (guaiac-based FOBT (gFOBT) and immunochemical FOBT (iFOBT)). Pooled sensitivities and specificities were calculated using a random effect model. Summary receiver operating characteristic curves were plotted and area under the curves were calculated. Results Overall, 31 studies meeting the inclusion criteria were included in this review. For gFOBT, we found no site-specific difference (proximally vs distally located) of pooled sensitivities observed in the colorectal cancer (CRC), advanced adenomas, and advanced neoplasms groups. As for iFOBT, pooled sensitivities for detecting CRC located in the distal colon/rectum were comparable with that in the proximal colon (proximal vs distal, 0.67, 95% CI 0.62-0.72 vs 0.72, 95% CI 0.68-0.75), while higher pooled sensitivities for detecting advanced adenomas and advanced neoplasms located in the distal colon/rectum than for detecting those in the proximal colon were observed for iFOBT with the values of 0.24 (95% CI 0.22-0.25) vs 0.32 (95% CI 0.30-0.34) and 0.25 (95% CI 0.23-0.28) vs 0.38 (95% CI 0.36-0.40), respectively. Summary receiver operating characteristic curve analyses showed similar patterns for both types of FOBT regarding the diagnostic accuracy for detecting colorectal neoplasms according to the anatomical sites of the colorectum. Conclusion iFOBT had higher sensitivity for detecting advanced adenomas and advanced neoplasia located in the distal colon/rectum than that for those in the proximal colon.
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Affiliation(s)
- Ming Lu
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - Xiaohu Luo
- Department of Toxicant Occupational Disease Testing Laboratory, Xuzhou Cancer Hospital, Xuzhou 221000, People's Republic of China
| | - Ni Li
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - Hongda Chen
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, People's Republic of China
| | - Min Dai
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, People's Republic of China
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Marcuello M, Duran-Sanchon S, Moreno L, Lozano JJ, Bujanda L, Castells A, Gironella M. Analysis of A 6-Mirna Signature in Serum from Colorectal Cancer Screening Participants as Non-Invasive Biomarkers for Advanced Adenoma and Colorectal Cancer Detection. Cancers (Basel) 2019; 11:E1542. [PMID: 31614785 PMCID: PMC6827108 DOI: 10.3390/cancers11101542] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 10/08/2019] [Accepted: 10/09/2019] [Indexed: 02/06/2023] Open
Abstract
Early detection of colorectal cancer (CRC) and its precancerous lesion, advanced adenomas (AA), is critical to improve CRC incidence and prognosis. Circulating microRNAs (miRNAs or miR) are promising non-invasive biomarkers for cancer detection. Our previous results showed that a plasma 6-miRNA signature (miR-15b-5p, miR-18a-5p, miR-29a-3p, miR-335-5p, miR-19a-3p and miR-19b-3p) could distinguish between CRC or AA and healthy individuals (controls). However, its diagnostic performance in serum is unknown. In this exploratory study we aim to evaluate the diagnostic performance of the 6-miRNA signature in serum samples in a cohort of individuals participating in Barcelona's CRC Screening Programme. We prospectively collected serums from 264 faecal immunochemical test (FIT)-positive participants and total RNA was extracted. Finally, 213 individuals (CRC, 59, AA, 74, controls, 80) were included. MiRNA expression was quantified by real-time RT-qPCR and data analysis was performed by logistic regression. Faecal hemoglobin concentration (f(Hb)) from FIT of the same individuals was also considered. As previously described in plasma, serum from patients with AA or CRC presented significant differences in the 6-miRNA signature compared to controls. Moreover, when combined with f(Hb), the final signature showed high discriminative capacity to distinguish CRC from controls (area under the curve (AUC) = 0.88), and even AA (AUC = 0.81) that otherwise are poorly detected if we only consider f(Hb) (AUC = 0.64). Addition of the serum 6-miRNA signature to quantitative f(Hb) show high accuracy to detect patients with advanced colorectal neoplasia in average-risk individuals. A combination of these two non-invasive methods could be a good strategy to improve diagnostic performances of current CRC screening programmes.
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Affiliation(s)
- María Marcuello
- Gastrointestinal and Pancreatic Oncology Research Group, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD)/Hospital Clínic of Barcelona/Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain.
| | - Saray Duran-Sanchon
- Gastrointestinal and Pancreatic Oncology Research Group, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD)/Hospital Clínic of Barcelona/Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain.
| | - Lorena Moreno
- Gastrointestinal and Pancreatic Oncology Research Group, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD)/Hospital Clínic of Barcelona/Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain.
| | - Juan José Lozano
- Gastrointestinal and Pancreatic Oncology Research Group, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD)/Hospital Clínic of Barcelona/Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain.
- Bioinformatics Platform, CIBEREHD, 08036 Barcelona, Spain.
| | - Luis Bujanda
- Department of Gastroenterology, Hospital Donostia/Instituto Biodonostia, CIBEREHD, Universidad del País Vasco UPV/EHU, 20014 San Sebastián, Spain.
| | - Antoni Castells
- Gastrointestinal and Pancreatic Oncology Research Group, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD)/Hospital Clínic of Barcelona/Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain.
| | - Meritxell Gironella
- Gastrointestinal and Pancreatic Oncology Research Group, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD)/Hospital Clínic of Barcelona/Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain.
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A novel panel of stool-based DNA biomarkers for early screening of colorectal neoplasms in a Chinese population. J Cancer Res Clin Oncol 2019; 145:2423-2432. [PMID: 31456088 DOI: 10.1007/s00432-019-02992-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/27/2019] [Indexed: 01/05/2023]
Abstract
PURPOSE The mortality of colorectal cancer ranked fifth in China according to cancer statistics in 2015. Cancer screening had been repeatedly proved to play a vital role in decreasing the incidence and mortality of colorectal cancer, but the existing screening methods could not meet the requirements. So it is of urgent need to develop a non-invasive, convenient and accurate screening method. METHODS In this study, stool samples were collected from 102 colorectal cancer, 20 colorectal adenoma, 6 hyperplastic polyps patients and 105 normal controls, and stool DNA was extracted for detection of methylation (BMP3, NDRG4, SDC2 and SFRP2) and KRAS mutations. Meanwhile, hemoglobin in stool samples was detected by immunoassays. Then, the logistic regression model used for classification was built with these biomarkers, and a ROC curve was drawn to evaluate the performance of each biomarker and the panel of them. Meanwhile, conventional serum biomarkers were detected for the comparison of positive rate in colorectal cancer between serum biomarkers and stool DNA biomarkers. RESULTS As a result, a classification model built with methylation of SDC2 and SFRP2, KRAS mutations and hemoglobin showed a sensitivity of 91.4% for colorectal cancer and 60% for adenoma with the specificity of 86.1%. Compared with it, most of the conventional serum biomarkers showed a sensitivity of less than 20% for colorectal cancer which was significantly lower than stool DNA biomarkers. CONCLUSIONS A novel panel comprised of stool DNA biomarkers was of much higher sensitivity and specificity in early screening of colorectal neoplasms than conventional serum biomarkers.
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Yau TO, Tang CM, Harriss EK, Dickins B, Polytarchou C. Faecal microRNAs as a non-invasive tool in the diagnosis of colonic adenomas and colorectal cancer: A meta-analysis. Sci Rep 2019; 9:9491. [PMID: 31263200 PMCID: PMC6603164 DOI: 10.1038/s41598-019-45570-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 05/23/2019] [Indexed: 12/18/2022] Open
Abstract
MicroRNAs (miRNAs) are proposed as potential biomarkers for the diagnosis of numerous diseases. Here, we performed a meta-analysis to evaluate the utility of faecal miRNAs as a non-invasive tool in colorectal cancer (CRC) screening. A systematic literature search, according to predetermined criteria, in five databases identified 17 research articles including 6475, 783 and 5569 faecal-based miRNA tests in CRC, adenoma patients and healthy individuals, respectively. Sensitivity, specificity, positive/negative likelihood and diagnostic odds ratios, area under curve (AUC), summary receiver operator characteristic (sROC) curves, association of individual or combinations of miRNAs to cancer stage and location, subgroup, meta-regression and Deeks' funnel plot asymmetry analyses were employed. Pooled miRNAs for CRC had an AUC of 0.811, with a sensitivity of 58.8% (95% confidence interval [CI]: 51.7-65.5%) and specificity of 84.8% (95% CI: 81.1-87.8%), whilst for colonic adenoma, it was 0.747, 57.3% (95% CI: 40.8-72.3%) and 76.1% (95% CI: 66.1-89.4%), respectively. The most reliable individual miRNA was miR-21, with an AUC of 0.843, sensitivity of 59.3% (95% CI: 26.3-85.6%) and specificity of 85.6% (95% CI: 72.2-93.2%). Paired stage analysis showed a better diagnostic accuracy in late stage CRC and sensitivity higher in distal than proximal CRC. In conclusion, faecal miR-21, miR-92a and their combination are promising non-invasive biomarkers for faecal-based CRC screening.
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Affiliation(s)
- Tung On Yau
- Department of Biosciences, John van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - Ceen-Ming Tang
- Oxford University Clinical Academic Graduate School, John Radcliffe Hospital, Oxford, UK
| | - Elinor K Harriss
- Bodleian Health Care Libraries, University of Oxford, Oxford, UK
| | - Benjamin Dickins
- Department of Biosciences, John van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, UK
| | - Christos Polytarchou
- Department of Biosciences, John van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, UK.
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Diagnostic Accuracy of FOBT and Colorectal Cancer Genetic Testing: A Systematic Review & Meta-Analysis. Ann Glob Health 2019; 85. [PMID: 31099505 PMCID: PMC6634323 DOI: 10.5334/aogh.2466] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Introduction: Colorectal cancer (CRC) is the second leading cause of cancer related death in the world after lung cancer. Early detection of CRC leads to improvement in cancer survival rate. In recent years, efforts have been made to discover a non-invasive screening marker of higher sensitivity and specificity. Fecal occult blood testing (FOBT) and genetic testing become alternative modalities to screen CRC in the population other than colonoscopy. The aim of this systematic review and meta-analysis is to determine the diagnostic accuracy, sensitivity and specificity of FOBT and genetic testing as screening tools in colorectal cancer. Methods: A literature search of PubMed, ScienceDirect, and Scopus was carried out. The search strategy was restricted to human subjects and studies are published in English. Data on sensitivity and specificity were extracted and pooled. Heterogeneity was assumed at significance level of p < 0.10 and was tested by chi squared. Degree of heterogeneity was quantified using the I2 statistic, and values of less than 25% is considered as homogenous. All analyses were performed using the software Meta-Disc. Results: A total of eleven studies were suitable for data synthesis and analysis. Five studies were analyzed for the accuracy of genetic testing, the pooled estimate for sensitivity and specificity were 71% (95% CI: 66, 75%) and 95% (95% CI: 93, 97%) respectively. Another group of studies which had been evaluated for the accuracy of FOBT, the pooled sensitivity was 31% (95% CI: 25, 38%) while the pooled specificity was 87% (95% CI: 86, 89%). Conclusions: FOBTs is recommended to use as population-based screening tools for colorectal cancer while genetic testing should be focusing on patients with moderate and high risk individuals.
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Asteria CR, Lucchini G, Guarda L, Ricci P, Pagani M, Boccia L. The detection of interval colorectal cancers following screening by fecal immunochemical test may predict worse outcomes and prompt ethical concerns: a 6-year population-based cohort study in a full district. Eur J Cancer Prev 2019; 28:17-26. [PMID: 29111981 DOI: 10.1097/cej.0000000000000416] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The rates of colorectal cancer (CRC) interval surveyed in screen-detected patients using a fecal immunochemical test (FIT) are not negligible. The aim of this study was to assess the effect of interval cancer on outcomes compared with a population with cancer diagnosed after a positive test result. All patients between 50 and 71 years of age, who were residents of the Mantua district, affected by CRC and operated on from 2005 to 2010 were reviewed. Other than patient-related, disease-related, and treatment-related factors and tumor location, this population was differentiated as either participating or not to screening and then into populations developing interval cancer after a negative FIT result. Mortality was investigated by univariate analysis and by overall survival rates. The mean age of the 975 patients enrolled was 62 years (61.7% males). Most patients (n=575, 59%) were not screen detected, and 400 (41%) were screen detected. Fifty-six (5.7%) patients in the latter group, representing 14% of the participants, developed interval cancer after a negative FIT result. Their cancer was mostly localized in the right colon (41.1%) instead of the left colon and rectum (P=0.02). They also showed higher stages (P=0.001), a moderate degree of differentiation (P=0.001), and overall higher mortality rates than patients with cancer diagnosed after a positive test result (P=0.001). The effect of interval CRC after screening with FIT resulted in worse outcomes compared with the FIT-positive group. With such findings, patients who had negative results for FIT should be informed of the risk of developing cancer within the rounds of screening to independently gain educational skills in the area of health prevention.
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Affiliation(s)
| | | | - Linda Guarda
- Department of Epidemiology, Public Health Observatory, ATS Val Padana, Mantua, Italy
| | - Paolo Ricci
- Department of Epidemiology, Public Health Observatory, ATS Val Padana, Mantua, Italy
| | - Mauro Pagani
- Department of Medicine, Medicine Unit Pieve Coriano, Carlo Poma ASST
| | - Luigi Boccia
- Department of Surgery and Orthopaedics, General Surgery Unit
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Roles of Methylated DNA Biomarkers in Patients with Colorectal Cancer. DISEASE MARKERS 2019; 2019:2673543. [PMID: 30944663 PMCID: PMC6421784 DOI: 10.1155/2019/2673543] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 11/22/2018] [Indexed: 12/25/2022]
Abstract
Colorectal cancer (CRC) is a leading cancer globally; therefore, early diagnosis and surveillance of this cancer are of paramount importance. Current methods of CRC diagnosis rely heavily on endoscopy or radiological imaging. Noninvasive tests including serum detection of the carcinoembryonic antigen (CEA) and faecal occult blood testing (FOBT) are associated with low sensitivity and specificity, especially at early stages. DNA methylation biomarkers have recently been found to have higher accuracy in CRC detection and enhanced prediction of prognosis and chemotherapy response. The most widely studied biomarker in CRC is methylated septin 9 (SEPT9), which is the only FDA-approved methylation-based biomarker for CRC. Apart from SEPT9, other methylated biomarkers including tachykinin-1 (TAC1), somatostatin (SST), and runt-related transcription factor 3 (RUNX3) have been shown to effectively detect CRC in a multitude of sample types. This review will discuss the performances of various methylated biomarkers used for CRC diagnosis and monitoring, when used alone or in combination.
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Brown JP, Wooldrage K, Kralj-Hans I, Wright S, Cross AJ, Atkin WS. Effect of once-only flexible sigmoidoscopy screening on the outcomes of subsequent faecal occult blood test screening. J Med Screen 2019; 26:11-18. [PMID: 30282520 PMCID: PMC6376653 DOI: 10.1177/0969141318785654] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 06/07/2018] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To investigate the outcomes of biennial guaiac faecal occult blood test (gFOBT) screening after once-only flexible sigmoidoscopy (FS) screening. METHODS Between 1994 and 1999, as part of the UK FS Screening Trial (UKFSST), adults aged 55-64 were randomly allocated to an intervention group (offered FS screening) or a control group (not contacted). From 2006, a subset of UKFSST participants (20,895/44,041 intervention group; 41,497/87,149 control group) were invited to biennial gFOBT screening by the English Bowel Cancer Screening Programme. We analysed gFOBT uptake, test positivity, yield of colorectal cancer (CRC), and positive predictive value (PPV) for CRC, advanced adenomas (AAs), and advanced colorectal neoplasia (ACN: AA/CRC). RESULTS Uptake of gFOBT at first invitation was 1.9% lower (65.7% vs. 67.6%, p < 0.01) among intervention versus control group participants. Positivity was 0.4% lower (2.0% vs. 2.4%, p < 0.01) and CRC yield was 0.08% lower (0.19% vs. 0.27%, p = 0.14). PPVs were also lower in the intervention versus control group, at 10.3% vs. 12.3% ( p = 0.44) for CRC, 22.7% vs. 31.4% ( p < 0.01) for AA, and 33.0% vs. 43.7% ( p < 0.01) for ACN. Among those who refused FS ( n = 5532), gFOBT uptake at first invitation was 47.7%, CRC yield was 0.25%, and PPV for ACN was 46.2%. Among FS attenders ( n = 15,363), uptake was 72.2%, CRC yield was 0.18%, and PPV for ACN was 27.9%. CONCLUSIONS Uptake, positivity and PPV of gFOBT screening were reduced following prior offer of FS screening. However, a quarter of FS screened participants receiving a diagnostic examination after positive gFOBT were diagnosed with ACN.
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Affiliation(s)
- Jeremy P Brown
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Kate Wooldrage
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Ines Kralj-Hans
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | | | - Amanda J Cross
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Wendy S Atkin
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
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Atkin W, Cross AJ, Kralj-Hans I, MacRae E, Piggott C, Pearson S, Wooldrage K, Brown J, Lucas F, Prendergast A, Marchevsky N, Patel B, Pack K, Howe R, Skrobanski H, Kerrison R, Swart N, Snowball J, Duffy SW, Morris S, von Wagner C, Halloran S. Faecal immunochemical tests versus colonoscopy for post-polypectomy surveillance: an accuracy, acceptability and economic study. Health Technol Assess 2019; 23:1-84. [PMID: 30618357 PMCID: PMC6340104 DOI: 10.3310/hta23010] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND In the UK, patients with one or two adenomas, of which at least one is ≥ 10 mm in size, or three or four small adenomas, are deemed to be at intermediate risk of colorectal cancer (CRC) and referred for surveillance colonoscopy 3 years post polypectomy. However, colonoscopy is costly, can cause discomfort and carries a small risk of complications. OBJECTIVES To determine whether or not annual faecal immunochemical tests (FITs) are effective, acceptable and cost saving compared with colonoscopy surveillance for detecting CRC and advanced adenomas (AAs). DESIGN Diagnostic accuracy study with health psychology assessment and economic evaluation. SETTING Participants were recruited from 30 January 2012 to 30 December 2013 within the Bowel Cancer Screening Programme in England. PARTICIPANTS Men and women, aged 60-72 years, deemed to be at intermediate risk of CRC following adenoma removal after a positive guaiac faecal occult blood test were invited to participate. Invitees who consented and returned an analysable FIT were included. INTERVENTION We offered participants quantitative FITs at 1, 2 and 3 years post polypectomy. Participants testing positive with any FIT were referred for colonoscopy and not offered further FITs. Participants testing negative were offered colonoscopy at 3 years post polypectomy. Acceptibility of FIT was assessed using discussion groups, questionnaires and interviews. MAIN OUTCOME MEASURES The primary outcome was 3-year sensitivity of an annual FIT versus colonoscopy at 3 years for detecting advanced colorectal neoplasia (ACN) (CRC and/or AA). Secondary outcomes included participants' surveillance preferences, and the incremental costs and cost-effectiveness of FIT versus colonoscopy surveillance. RESULTS Of 8008 invitees, 5946 (74.3%) consented and returned a round 1 FIT. FIT uptake in rounds 2 and 3 was 97.2% and 96.9%, respectively. With a threshold of 40 µg of haemoglobin (Hb)/g faeces (hereafter referred to as µg/g), positivity was 5.8% in round 1, declining to 4.1% in round 3. Over three rounds, 69.2% (18/26) of participants with CRC, 34.3% (152/443) with AAs and 35.6% (165/463) with ACN tested positive at 40 µg/g. Sensitivity for CRC and AAs increased, whereas specificity decreased, with lower thresholds and multiple rounds. At 40 µg/g, sensitivity and specificity of the first FIT for CRC were 30.8% and 93.9%, respectively. The programme sensitivity and specificity of three rounds at 10 µg/g were 84.6% and 70.8%, respectively. Participants' preferred surveillance strategy was 3-yearly colonoscopy plus annual FITs (57.9%), followed by annual FITs with colonoscopy in positive cases (31.5%). FIT with colonoscopy in positive cases was cheaper than 3-yearly colonoscopy (£2,633,382), varying from £485,236 (40 µg/g) to £956,602 (10 µg/g). Over 3 years, FIT surveillance could miss 291 AAs and eight CRCs using a threshold of 40 µg/g, or 189 AAs and four CRCs using a threshold of 10 µg/g. CONCLUSIONS Annual low-threshold FIT with colonoscopy in positive cases achieved high sensitivity for CRC and would be cost saving compared with 3-yearly colonoscopy. However, at higher thresholds, this strategy could miss 15-30% of CRCs and 40-70% of AAs. Most participants preferred annual FITs plus 3-yearly colonoscopy. Further research is needed to define a clear role for FITs in surveillance. FUTURE WORK Evaluate the impact of ACN missed by FITs on quality-adjusted life-years. TRIAL REGISTRATION Current Controlled Trials ISRCTN18040196. FUNDING National Institute for Health Research (NIHR) Health Technology Assessment programme, NIHR Imperial Biomedical Research Centre and the Bobby Moore Fund for Cancer Research UK. MAST Group Ltd provided FIT kits.
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Affiliation(s)
- Wendy Atkin
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Amanda J Cross
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Ines Kralj-Hans
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Eilidh MacRae
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Carolyn Piggott
- Bowel Cancer Screening Programme Southern Hub, Guildford, UK
| | - Sheena Pearson
- Bowel Cancer Screening Programme Southern Hub, Guildford, UK
| | - Kate Wooldrage
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Jeremy Brown
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Fiona Lucas
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Aaron Prendergast
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Natalie Marchevsky
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Bhavita Patel
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Kevin Pack
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Rosemary Howe
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Hanna Skrobanski
- Research Department of Behavioural Science and Health, University College London, London, UK
| | - Robert Kerrison
- Research Department of Behavioural Science and Health, University College London, London, UK
| | - Nicholas Swart
- Department of Applied Health Research, University College London, London, UK
| | - Julia Snowball
- Bowel Cancer Screening Programme Southern Hub, Guildford, UK
| | - Stephen W Duffy
- Centre for Cancer Prevention, Wolfson Institute of Preventative Medicine, Queen Mary University, London, UK
| | - Stephen Morris
- Department of Applied Health Research, University College London, London, UK
| | - Christian von Wagner
- Research Department of Behavioural Science and Health, University College London, London, UK
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Contribution of the OC Sensor ® immunoassay in comparison to the Hemoccult II ® guaiac-test in organized colorectal cancer screening. Eur J Epidemiol 2018; 34:163-172. [PMID: 30536183 DOI: 10.1007/s10654-018-0471-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 12/04/2018] [Indexed: 02/06/2023]
Abstract
Colorectal cancer (CRC) is a major cause of cancer-related death of worldwide with high incidence and mortality rate, accessible to a screening program in France, first with guaiac- based fecal occult blood test (g-FOBT) then with fecal immunochemical tests (FIT), since 2015, because of better accuracy. The aim of our study was to compare the characteristics of screen-detected lesions in two successive CRC screening campaigns, using two different tests (Hemoccult II® and OC Sensor®) in the department of Maine-et-Loire, and to precise the performance of these tests [participation rate, detection rates (DR), positive predictive value (PPV)]. Participants, invited by CAP SANTE 49, with polyps or cancer at the colonoscopy after a positive screening test between 01/01/2013 and 31/12/2016 were included. A guaiac-based fecal occult blood test (g-FOBT) was used from January 2013 to December 2014 and a FIT was used from June 2015 to December 2016). 2575 participants, 642 in g-FOBT group and 1933 in FIT group had lesions. Participation rate was not different between tests (p = 0.104), whereas DR and PPV were statistically higher in FIT for all lesions (2.61, 95% CI [2.50-2.70] vs 0.93, 95% CI [0.90-1.00], p < 0.0001 and 64.84, 95% CI [63.10-66.60], 50.00, 95% CI [47.30-52.70], p < 0.0001 respectively). FIT detects more precancerous lesions (adenomas, p < 0.001, and advanced adenomas, p < 0.001) than g-FOBT but g-FOBT detects more serrated polyps (p = 0.025). AAs were more in right colon in FIT than g-FOBT (p = 0.035). No different participation rate was detected between FIT and g-FOBT but DR and PPV of all lesions was higher with FIT.
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Carot L, Castells A, Hernández C, Alvarez-Urturi C, Balaguer F, Lanas A, Cubiella J, Tasende JD, Jover R, Hernandez V, Carballo F, Bujanda L, Quintero E, Andreu M, Bessa X. Detection of serrated lesions in proximal colon by simulated sigmoidoscopy vs faecal immunochemical testing in a multicentre, pragmatic, randomised controlled trial. United European Gastroenterol J 2018; 6:1527-1537. [PMID: 30574323 DOI: 10.1177/2050640618804722] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 08/27/2018] [Indexed: 12/16/2022] Open
Abstract
Background The diagnostic yield of the faecal immunochemical test and sigmoidoscopy in detecting proximal serrated polyps in a colorectal cancer screening programme has not been fully assessed. Aim We determined the detection rate of proximal serrated polyps by simulated sigmoidoscopy and faecal immunochemical test compared with total colonoscopy in a population-based, multicentre, nationwide, randomised controlled trial (ColonPrev study). Methods Sigmoidoscopy yield was simulated based on the UK-Flexible Sigmoidoscopy Trial for total colonoscopy referral. Definitions were: proximal serrated polyp (proximal serrated polyp): sessile serrated polyp or hyperplastic polyp of any size and proximal at-risk serrated polyp (at-risk proximal serrated polyp): sessile serrated polyp of any size or hyperplastic polyp ≥ 10 mm, both located proximally to the splenic flexure. Results A total of 10,611 individuals underwent faecal immunochemical test and 5059 underwent total colonoscopy and were evaluated by simulated sigmoidoscopy. Sigmoidoscopy and faecal immunochemical test were less accurate in detecting proximal serrated polyps (odds ratio: 0.13; 95% confidence interval: 0.10-0.18 and 0.13; 0.09-0.18, p < 0.0001, respectively). Both tests were inferior to colonoscopy in detecting at-risk proximal serrated polyps, and sigmoidoscopy was inferior to faecal immunochemical test in detecting these lesions (odds ratio: 0.17; 95% confidence interval: 0.10-0.30 and 0.25; 0.17-0.37, p < 0.0001, respectively). Conclusion Sigmoidoscopy and faecal immunochemical test are less accurate in detecting proximal serrated polyps than colonoscopy, particularly in women.
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Affiliation(s)
- Laura Carot
- Gastroenterology Department, Hospital del Mar, Barcelona, Spain.,Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Antoni Castells
- Gastroenterology Department, Hospital Clínic de Barcelona, Universitat de Barcelona, Spain
| | - Cristina Hernández
- Epidemiology and Evaluation Department, Hospital del Mar, Barcelona, Spain
| | - Cristina Alvarez-Urturi
- Gastroenterology Department, Hospital del Mar, Barcelona, Spain.,Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Francesc Balaguer
- Gastroenterology Department, Hospital Clínic de Barcelona, Universitat de Barcelona, Spain
| | - Angel Lanas
- Gastroenterology Department, Hospital Clinico Universitario, Zaragoza, Spain
| | - Joaquín Cubiella
- Gastroenterology Department, Instituto de Investigación Biomédica Galicia Sur, Orense, Spain
| | - Jose D Tasende
- Gastroenterology Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Rodrigo Jover
- Gastroenterology Department, Hospital General Universitario, Alicante, Spain
| | - Vicent Hernandez
- Gastroenterology Department, Complexo Hospitalario Universitario, Vigo, Spain
| | - Fernando Carballo
- Unidad de Gestión Clínica de Digestivo, Hospital Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Luis Bujanda
- Gastroenterology Department, Donostia Hospital, San Sebastian, Spain
| | - Enrique Quintero
- Gastroenterology Department, Hospital Universitario La Laguna, Tenerife, Spain
| | - Montserrat Andreu
- Gastroenterology Department, Hospital del Mar, Barcelona, Spain.,Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Xavier Bessa
- Gastroenterology Department, Hospital del Mar, Barcelona, Spain.,Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
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Abstract
Iron deficiency anaemia (IDA) is an important, common clinical condition and 8-15% of these patients will be diagnosed with a gastrointestinal cancer. IDA is defined as haemoglobin below the lower limit of normal, in the presence of characteristic iron studies. This article will discuss the causes and clinical diagnosis of iron deficiency, including interpretation of common laboratory tests that differentiate this from other causes of anaemia. We suggest an initial approach for investigating the cause of iron deficiency in these patients and also consider the subsequent treatment and indications for further investigation.
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40
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Ng L, Wan TMH, Man JHW, Chow AKM, Iyer D, Chen G, Yau TCC, Lo OSH, Foo DCC, Poon JTC, Leung WK, Pang RWC, Law WL. Identification of serum miR-139-3p as a non-invasive biomarker for colorectal cancer. Oncotarget 2018; 8:27393-27400. [PMID: 28404964 PMCID: PMC5432343 DOI: 10.18632/oncotarget.16171] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 01/16/2017] [Indexed: 12/12/2022] Open
Abstract
Aberrant levels of circulating microRNAs are potential biomarkers for the early detection of colorectal cancer. The aim of this study was to study miR-139-3p and miR-622 in serum as a non-invasive biomarker for colorectal cancer diagnosis. We applied quantitative polymerase chain reaction to determine the levels of miR-139-3p and miR-622 in 42 pairs of tumor and adjacent non-tumor tissues, and in serum samples of 117 patients and 90 control subjects. Our results showed that miR-139-3p was silenced whereas miR-622 was overexpressed in colorectal cancer. Similarly, serum miR-139-3p level was significantly lower in colorectal cancer patients than in control subjects whereas miR-622 was more frequently detectable in patients. ROC analysis showed that AUC of miR-139-3p was 0.9935, with a sensitivity of 96.6% and specificity of 97.8%. Serum miR-139-3p level showed high sensitivity and specificity for both early and late stage CRCs and proximal and distal CRCs. Detectable serum miR-622 showed a sensitivity of 87.5% and specificity of 63.5% for discriminating CRC patients, but the sensitivity dropped for late stage patients (72.7%). We also included analyses of the blood CEA level for comparing the diagnostic performance of these blood-based biomarkers. The median level in CRC patients (3.6 ng/ml) was significantly higher than that in control (1.8 ng/ml). The AUC value of CEA in diagnosing CRC patients was 0.7515. CEA showed a positive correlation with tumor stage and age of patients and its level was higher in male. Collectively, serum miR-139-3p has strong potential as a promising non-invasive biomarker in colorectal cancer detection.
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Affiliation(s)
- Lui Ng
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Timothy Ming-Hun Wan
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Johnny Hon-Wai Man
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Ariel Ka-Man Chow
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Deepak Iyer
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Guanghua Chen
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Thomas Chung-Cheung Yau
- Centre for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Oswens Siu-Hung Lo
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Dominic Chi-Chung Foo
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Jensen Tung-Chung Poon
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Wai-Keung Leung
- Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Roberta Wen-Chi Pang
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.,Centre for Cancer Research, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Wai-Lun Law
- Department of Surgery, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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You S, Li W, Guan Y. Tunicamycin inhibits colon carcinoma growth and aggressiveness via modulation of the ERK-JNK-mediated AKT/mTOR signaling pathway. Mol Med Rep 2018; 17:4203-4212. [PMID: 29344654 PMCID: PMC5802191 DOI: 10.3892/mmr.2018.8444] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 07/05/2017] [Indexed: 12/21/2022] Open
Abstract
Epidemiology and evidence have demonstrated that colon carcinoma is one of the most common gastrointestinal tumors in the clinic. Reports have suggested that Tunicamycin significantly inhibits aggressiveness of colon carcinoma cells by promotion of apoptosis. In the present study, the inhibitory effect of tunicamycin on colon cancer cells and the potential underlying molecular mechanism was investigated. Western blotting, immunohistochemistry, apoptotic assays and immunofluorescence were used to analyze the therapeutic effects of tunicamycin on apoptosis, growth, aggressiveness and cell cycle of colon tumor cells, by downregulation of fibronectin, vimentin and E‑cadherin expression levels. In vitro experiments demonstrated that tunicamycin significantly inhibited growth, migration and invasion of colon carcinoma cells. In addition, tunicamycin administration promoted apoptosis of colon carcinoma cells via upregulation of apoptotic protease activating factor 1 and cytochrome c expression levels, which are proteins that have a role in mitochondrial apoptosis signaling. Cell cycle assays revealed that tunicamycin suppressed proliferation and arrested S phase entry of colon carcinoma cells. Mechanistic analysis demonstrated that tunicamycin reduced expression and phosphorylation levels of extracellular signal‑regulated kinase (ERK), c‑JUN N‑terminal kinase (JNK) and protein kinase B (AKT), and inhibited mammalian target of rapamycin (mTOR) expression levels in colon carcinoma cells. Endogenous overexpression of ERK inhibited tunicamycin‑mediated downregulation of JNK, AKT and mTOR expression, which further blocked tunicamycin‑mediated inhibition of growth and aggressiveness of colon carcinoma. In vivo assays revealed that tunicamycin treatment significantly inhibited tumor growth and promoted apoptosis, which led to long‑term survival of tumor‑bearing mice compared with the control group. In conclusion, these results suggested that tunicamycin may inhibit growth and aggressiveness of colon cancer via the ERK‑JNK‑mediated AKT/mTOR signaling pathway, and suggested that tunicamycin may be a potential anti‑cancer agent for colon carcinoma therapy.
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Affiliation(s)
- Shuping You
- Department of Anus and Bowel Surgery, Jingmen No. 2 People's Hospital, Jingmen, Hubei 448000, P.R. China
| | - Weihong Li
- Department of Anus and Bowel Surgery, Jingmen No. 2 People's Hospital, Jingmen, Hubei 448000, P.R. China
| | - Yun Guan
- Department of Anus and Bowel Surgery, Jingmen No. 2 People's Hospital, Jingmen, Hubei 448000, P.R. China
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Wang Q, Wang P, Xiao Z. Resistant starch prevents tumorigenesis of dimethylhydrazine-induced colon tumors via regulation of an ER stress-mediated mitochondrial apoptosis pathway. Int J Mol Med 2018; 41:1887-1898. [PMID: 29393371 PMCID: PMC5810243 DOI: 10.3892/ijmm.2018.3423] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 01/12/2018] [Indexed: 12/11/2022] Open
Abstract
Resistant starch is as common soluble fiber that escapes digestion in the small intestine and can regulate intestinal function, metabolism of blood glucose and lipids, and may prevent tumorigenesis of gastrointestinal cancer. Epidemiology and other evidence have suggested that resistant starch may prevent colon cancer development. The aim of the current study was to explore the ameliorative effects and potential mechanisms of resistant starch in the tumorigenesis of colon tumors induced by dimethylhydrazine in C57BL/6 mice. Western blot analysis, ELISA, microscopy, immunofluorescence and immunohistochemistry were used to analyze the efficacy of resistant starch on the metabolic balance in the colon and tumorigenesis of colon tumors. The results demonstrated that a diet containing resistant starch decreased the animal body weight and reduced free ammonia, pH and short chain fatty acids in feces compared with mice that received a standard diet. Resistant starch reduced the incidence of colon tumors and suppressed the expression of carcinogenesis-associated proteins, including heat shock protein 25, protein kinase C-d and gastrointestinal glutathione peroxidase in colon epithelial cells compared with standard starch and control groups. Colon tumor cells proliferation and dedifferentiation were significantly decreased by a resistant starch diet. The results also demonstrated that resistant starch increased the apoptosis of colon tumor cells through regulation of apoptosis-associated gene expression levels in colon tumor cells. Oxidative stress and endoplasmic reticulum stress were upregulated, and elevation eukaryotic translation initiation factor 2α (eIF2α), activating transcription factor-4 and secretase-β expression levels were increased in the resistant starch diet group. Additionally, the activity of eIF2α and PERK were increased in colon tumor cells from mice that had received resistant starch. Increasing DNA damage-inducible transcript 3 protein (CHOP), binding immunoglobulin protein (BIP) and caspase-12 expression levels upregulated by resistant starch diet may contribute to the resistant starch-induced apoptosis of colon tumor cells induced by 1,2-dimethylhydrazine. In vitro assays demonstrated that knockdown of eIF2α inhibited apoptosis of colon tumor cells isolated from mice fed with resistant starch, which also downregulated CHOP, BIP and caspase-3 expression levels compared with controls. Furthermore, long-term survival of experimental mice was prolonged by the resistant starch diet compared with the standard diet group. In conclusion, the results indicate that resistant starch in the diet may prevent carcinogenesis of colon epithelial cells, mediated by enhancing apoptosis through an endoplasmic reticulum stress-mediated mitochondrial apoptosis pathway.
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Affiliation(s)
- Qiuyu Wang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Peng Wang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
| | - Zhigang Xiao
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, P.R. China
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Väyrynen JP, Tuomisto A, Väyrynen SA, Klintrup K, Karhu T, Mäkelä J, Herzig KH, Karttunen TJ, Mäkinen MJ. Preoperative anemia in colorectal cancer: relationships with tumor characteristics, systemic inflammation, and survival. Sci Rep 2018; 8:1126. [PMID: 29348549 PMCID: PMC5773501 DOI: 10.1038/s41598-018-19572-y] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 01/04/2018] [Indexed: 02/07/2023] Open
Abstract
Anemia is common in colorectal cancer (CRC) but its relationships with tumor characteristics, systemic inflammation, and survival have not been well characterized. In this study, blood hemoglobin levels and erythrocyte mean corpuscular volume (MCV) levels were measured in two independent cohorts of 148 CRC patients and 208 CRC patients, and their correlation with patient and tumor characteristics, systemic inflammatory markers (modified Glasgow Prognostic Score: mGPS; serum levels of thirteen cytokines, C-reactive protein, albumin), and survival were analyzed. We found that anemia, most frequently normocytic, followed by microcytic, was present in 43% of the patients. Microcytic anemia was most commonly associated with proximal colon tumor location. Average MCV and blood hemoglobin levels were lower in tumors with high T-class. Low blood hemoglobin associated with systemic inflammation, including high mGPS and high serum levels of C-reactive protein and IL-8. Particularly, normocytic anemia associated with higher mGPS. Normocytic anemia associated with a tendency towards worse overall survival (multivariate hazard ratio 1.61, 95% confidence interval 1.07–2.42, p = 0.023; borderline statistical significance considering multiple hypothesis testing). In conclusion, anemia in CRC patients is most frequently normocytic. Proximal tumor location is associated with predominantly microcytic anemia and systemic inflammation is associated with normocytic anemia.
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Affiliation(s)
- Juha P Väyrynen
- Cancer and Translational Medicine Research Unit, University of Oulu, POB 5000, Oulu, 90014, Finland. .,Department of Pathology, Oulu University Hospital and Medical Research Center Oulu, Oulu, POB 21, Oulu, 90029, Finland.
| | - Anne Tuomisto
- Cancer and Translational Medicine Research Unit, University of Oulu, POB 5000, Oulu, 90014, Finland.,Department of Pathology, Oulu University Hospital and Medical Research Center Oulu, Oulu, POB 21, Oulu, 90029, Finland
| | - Sara A Väyrynen
- Cancer and Translational Medicine Research Unit, University of Oulu, POB 5000, Oulu, 90014, Finland.,Department of Pathology, Oulu University Hospital and Medical Research Center Oulu, Oulu, POB 21, Oulu, 90029, Finland
| | - Kai Klintrup
- Research Unit of Surgery, Anesthesia and Intensive Care, University of Oulu, POB 5000, Oulu, 90014, Finland.,Department of Surgery, Oulu University Hospital and Medical Research Center Oulu, POB 21, Oulu, 90029, Finland
| | - Toni Karhu
- Research Unit of Biomedicine and Biocenter of Oulu, University of Oulu, POB 5000, Oulu, 90014, Finland.,Oulu University Hospital and Medical Research Center Oulu, POB 21, Oulu, 90029, Finland
| | - Jyrki Mäkelä
- Research Unit of Surgery, Anesthesia and Intensive Care, University of Oulu, POB 5000, Oulu, 90014, Finland.,Department of Surgery, Oulu University Hospital and Medical Research Center Oulu, POB 21, Oulu, 90029, Finland
| | - Karl-Heinz Herzig
- Research Unit of Biomedicine and Biocenter of Oulu, University of Oulu, POB 5000, Oulu, 90014, Finland.,Oulu University Hospital and Medical Research Center Oulu, POB 21, Oulu, 90029, Finland.,Department of Gastroenterology and Metabolism, Poznan University of Medical Sciences, ul. Szpitalna 27/33, 60-572, Poznan, Poland
| | - Tuomo J Karttunen
- Cancer and Translational Medicine Research Unit, University of Oulu, POB 5000, Oulu, 90014, Finland.,Department of Pathology, Oulu University Hospital and Medical Research Center Oulu, Oulu, POB 21, Oulu, 90029, Finland
| | - Markus J Mäkinen
- Cancer and Translational Medicine Research Unit, University of Oulu, POB 5000, Oulu, 90014, Finland.,Department of Pathology, Oulu University Hospital and Medical Research Center Oulu, Oulu, POB 21, Oulu, 90029, Finland
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LINE-1 hypomethylation status of circulating cell-free DNA in plasma as a biomarker for colorectal cancer. Oncotarget 2017; 8:11906-11916. [PMID: 28060757 PMCID: PMC5355314 DOI: 10.18632/oncotarget.14439] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 12/20/2016] [Indexed: 01/06/2023] Open
Abstract
Colorectal cancer (CRC) is a serious public health problem and non-invasive biomarkers improving diagnosis or therapy are strongly required. Circulating cell-free DNA (cfDNA) has been a promising target for this purpose. In this study, we evaluated the potential of long interspersed nuclear element-1 (LINE-1) hypomethylation as a blood biomarker for CRC. LINE-1 hypomethylation level in plasma cfDNA in 114 CRC patients was retrospectively examined by absolute quantitative analysis of methylated alleles real-time PCR, and was expressed using LINE-1 hypomethylation index (LHI) [unmethylated copy number/ (methylated copy number + unmethylated copy number)]. Greater LHI values indicated enhanced hypomethylation. In our clinicopathological analysis, CRC patients with large tumors (≥6.0 cm), advanced N stage (≥2), and distant metastasis (M1) had statistically significantly higher cfDNA LHI than other CRC patients, suggesting cfDNA LHI as a disease progression biomarker for CRC. Furthermore, early stage I/II (n = 57) as well as advanced stage III/IV (n =57) CRC patients had significantly higher cfDNA LHI than healthy donors (n=53) [stage I/II: median 0.369 (95% confidence interval, 0.360–0.380) vs. 0.332 (0.325–0.339), P < 0.0001; stage III/IV: 0.372 (0.365–0.388) vs. 0.332 (0.325–0.339), P < 0.0001]. The receiver operating characteristic analysis showed that cfDNA LHI had the detection capacity of CRC with area under the curve(AUC) of 0.79 and 0.83 in stage I/II and stage III/IV CRC patients, respectively. The present study demonstrated for the first time the potential of plasma cfDNA LHI as a novel biomarker for CRC, particularly for early stage detection.
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de Klerk CM, van der Vlugt M, Bossuyt PM, Dekker E. A large proportion of fecal immunochemical test-positive participants in colorectal cancer screening is symptomatic. United European Gastroenterol J 2017; 6:471-479. [PMID: 29774162 PMCID: PMC5949972 DOI: 10.1177/2050640617733922] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 09/04/2017] [Indexed: 12/15/2022] Open
Abstract
Background Symptomatic invitees are advised not to participate in colorectal cancer
(CRC) screening but to directly consult their general practitioner (GP),
because fecal immunochemical test (FIT) sensitivity for cancer is not
optimal. This recommendation may not always be followed in daily practice.
We evaluated how many FIT-positive participants had CRC-related symptoms and
whether the presence of symptoms was associated with the presence and
location of CRC/advanced neoplasia. Methods We prospectively collected data on CRC-related symptoms in all FIT-positive
participants in the Dutch CRC screening program, referred to our endoscopy
centers between 2014 and 2016, and evaluated whether symptoms were
associated with detected CRC/advanced neoplasia at colonoscopy. Results Of 527 FIT-positive participants, 314 had advanced neoplasia, of which 41 had
CRC. Overall, 246 (47%; 95% confidence interval (CI) 0.42–0.51) reported
CRC-related symptoms. A change in bowel habits (odds ratio (OR) 2.86, CI
1.23–6.62) and visible blood in stool (OR 8.65, CI 2.34–32.0) were
associated with the detection of CRC at colonoscopy. We did not observe
significant associations between evaluated symptoms and advanced
neoplasia. Conclusions A large proportion of FIT-positive screening participants have CRC-related
symptoms. This suggests that current instructions do not retain symptomatic
screening invitees from participation and awareness of CRC-related symptoms
is inadequate.
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Affiliation(s)
- Clasine M de Klerk
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, the Netherlands
| | - Manon van der Vlugt
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, the Netherlands
| | - Patrick M Bossuyt
- Department of Clinical Epidemiology, Academic Medical Center, Amsterdam, the Netherlands
| | - Evelien Dekker
- Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, the Netherlands
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Senore C, Bellisario C, Segnan N. Distribution of colorectal polyps: Implications for screening. Best Pract Res Clin Gastroenterol 2017; 31:481-488. [PMID: 28842058 DOI: 10.1016/j.bpg.2017.04.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 04/16/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND During the last decades data from different studies reported modifications of the topographic distribution of colorectal cancers (CRCs), with an increased frequency of tumours in proximal colonic segments. Given the documented link between adenomas and CRC, a proximal migration of adenomas over time could be expected as well. AIM To evaluate available evidence about the prevalence of adenomas and of sessile serrated polyps across colonic segments, the changing trends in their distribution across the colon and the diagnostic performance of screening tests currently adopted in population based screening programs for lesions located in different colonic segments. METHODS Literature search on PubMed, Embase, and Cochrane Database of Systematic Reviews, Database of Abstracts of Reviews of Effects with reference to preferred reporting items for systematic reviews and meta-analysis (PRISMA), considering all adult human studies in English, published between January 2000 and February 2017. RESULTS Cross-sectional analysis of endoscopy and pathology data-bases are consistently showing a trend toward an increase with age of the proportion of adenomas located in the proximal colon. Several observational studies analysed the site distribution of adenomas, testing the hypothesis of a proximal shift of these lesions, and most of them reported an increase in the proportion of right-sided adenomas over time, although a similar trend was not confirmed by others. Also the quality of the retrieved evidence was low. Both endoscopy and FIT are showing a different level of sensitivity for lesions arising in different colonic segments, depending also on screenees characteristics. CONCLUSION Available evidence is supporting the hypothesis of an increase in the proportion of right-sided adenomas with age, while a similar increase has not been reported for SSP/A, at least among subjects aged 50 or older. The trend toward a proximalization of colorectal adenomas over time, reported by some authors, likely results from improved diagnostic performances and/or the process of population ageing.
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Affiliation(s)
- Carlo Senore
- AOU Città della Salute e della Scienza, SC Epidemiologia, screening, registro tumori - CPO, Turin, Italy.
| | - Cristina Bellisario
- AOU Città della Salute e della Scienza, SC Epidemiologia, screening, registro tumori - CPO, Turin, Italy
| | - Nereo Segnan
- AOU Città della Salute e della Scienza, SC Epidemiologia, screening, registro tumori - CPO, Turin, Italy
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Niedermaier T, Weigl K, Hoffmeister M, Brenner H. Diagnostic performance of flexible sigmoidoscopy combined with fecal immunochemical test in colorectal cancer screening: meta-analysis and modeling. Eur J Epidemiol 2017; 32:481-493. [DOI: 10.1007/s10654-017-0279-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 06/24/2017] [Indexed: 12/13/2022]
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Colorectal Cancer in India: An Audit from a Tertiary Center in a Low Prevalence Area. Indian J Surg Oncol 2017; 8:484-490. [PMID: 29203978 DOI: 10.1007/s13193-017-0655-0] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 04/12/2017] [Indexed: 02/08/2023] Open
Abstract
Colorectal cancer (CRC) is a common cancer worldwide with a low reported incidence in India. There is significant geographical variation in the incidence rates, and the presentation may also vary. There are few studies evaluating the clinical profile of CRC in Indian patients. We analyzed a prospective database maintained at the Tata Memorial Hospital, a referral cancer center in Mumbai, of consecutive patients with CRC between August 2013 and August 2014. We captured details regarding the demography, symptoms, pathology, stage, and treatment plan. The aim was to assess the demographic and clinical details of patients with CRC in India and compare it with those of the reported literature. Eight hundred new patients with CRC were seen in the colorectal clinic in one year. The mean age was 47.2 years. Sixty-five percent were males. Patients were symptomatic for an average period of 4 months prior to presentation. The commonest symptoms were rectal bleeding (57%), pain (44%), and altered bowel habits (26%). Thirteen percent of the patients had signet ring tumors. The median CEA (carcinoembryonic antigen) level was 5.8 ng/mL. Most patients had localized or locally advanced disease. Twenty-eight percent of the patients had metastatic disease with liver being the commonest site of metastases (14%) followed by peritoneum and lung. More than half of the patients received treatment with a curative intent. Colorectal cancer in India differs from that described in the Western countries. We had more young patients, higher proportion of signet ring carcinomas, and more patients presenting with an advanced stage. Inadequate access to healthcare and socioeconomic factors may play a role in some of these differences.
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49
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Atkin W, Wooldrage K, Parkin DM, Kralj-Hans I, MacRae E, Shah U, Duffy S, Cross AJ. Long term effects of once-only flexible sigmoidoscopy screening after 17 years of follow-up: the UK Flexible Sigmoidoscopy Screening randomised controlled trial. Lancet 2017; 389:1299-1311. [PMID: 28236467 PMCID: PMC6168937 DOI: 10.1016/s0140-6736(17)30396-3] [Citation(s) in RCA: 238] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/01/2017] [Accepted: 02/02/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Colorectal cancer is the third most common cancer worldwide. Previous analyses have only reported follow-up after flexible sigmoidoscopy for a maximum of 12 years. We aimed to examine colorectal cancer incidence and mortality after a single flexible sigmoidoscopy screening and 17 years of follow-up. METHODS In this multicentre randomised trial (UK Flexible Sigmoidoscopy Screening Trial), done between Nov 14, 1994, and March 30, 1999, 170 432 eligible men and women, who had indicated on a previous questionnaire that they would probably attend screening if invited, were randomly assigned (1:2) to an intervention group (offered flexible sigmoidoscopy screening) or a control group (not contacted). Randomisation was done centrally in blocks of 12, and stratified by trial centre, general practice, and household type. The nature of the intervention did not allow the staff to be masked to arm of the trial; however, randomisation was done in batches so that the control group and participants not yet randomised were unaware of their allocation status. The primary outcomes were incidence and mortality of colorectal cancer. Hazard ratios (HRs) and 95% CIs for colorectal cancer incidence and mortality were estimated for intention-to-treat and per-protocol analyses. The trial is registered with ISRCTN, number 28352761. FINDINGS Our cohort analysis included 170 034 people: 112 936 in the control group and 57 098 in the intervention group, 40 621 (71%) of whom were screened and 16 477 (29%) were not screened. During screening and a median of 17·1 years' follow-up, colorectal cancer was diagnosed in 1230 individuals in the intervention group and 3253 in the control group, and 353 individuals in the intervention group versus 996 individuals in the control group died from colorectal cancer. In intention-to-treat analyses, colorectal cancer incidence was reduced by 26% (HR 0·74 [95% CI 0·70-0·80]; p<0·0001) in the intervention group versus the control group and colorectal cancer mortality was reduced by 30% (0·70 [0·62-0·79]; p<0·0001) in the intervention group versus the control group. In per-protocol analyses, adjusted for non-compliance, colorectal cancer incidence and mortality were 35% (HR 0·65 [95% CI 0·59-0·71]) and 41% (0·59 [0·49-0·70]) lower in the screened group. INTERPRETATION A single flexible sigmoidoscopy continues to provide substantial protection from colorectal cancer diagnosis and death, with protection lasting at least 17 years. FUNDING National Institute for Health Research Efficacy and Mechanism Evaluation.
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Affiliation(s)
- Wendy Atkin
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK.
| | - Kate Wooldrage
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - D Maxwell Parkin
- Clinical Trial Service Unit, The Nuffield Department of Population Health (NDPH), University of Oxford, Oxford, UK
| | - Ines Kralj-Hans
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Eilidh MacRae
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Urvi Shah
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Stephen Duffy
- Centre for Cancer Prevention, Wolfson Institute of Preventive Medicine, Queen Mary University, London, UK
| | - Amanda J Cross
- Cancer Screening and Prevention Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
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50
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Banaszkiewicz Z, Budzyński J, Tojek K, Jarmocik P, Frasz J, Mrozowski M, Świtoński M, Jawień A. The fecal occult blood test as a tool for improved outpatient qualification for colonoscopy. A single-center experience and 10-year follow-up survey. Adv Med Sci 2017; 62:171-176. [PMID: 28282604 DOI: 10.1016/j.advms.2016.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 07/29/2016] [Accepted: 08/01/2016] [Indexed: 12/24/2022]
Abstract
PURPOSE Colonoscopy is not widely and easily available in all countries, even for symptomatic patients. This is one of the causes of tumors not being diagnosed until an advanced stage. The aim of this study was to estimate the efficacy of the fecal occult blood test (FOBT) in the diagnostic work-up of outpatients referred to a colorectal unit due to indistinct abdominal symptoms. PATIENTS/METHODS Among 10418 consecutive symptomatic individuals referred to the outpatient clinic, an immunochemical FOBT (Hem-Check 1®) was recommended for 9432 patients with indistinct symptoms as a tool for qualifying them for colonoscopy. All the subjects were treated according to their diagnosis and followed-up for the next 10 years. RESULTS Colorectal cancer (CRC) was diagnosed in 535 individuals: 393/986 (39.9%) among patients with red-flag symptoms, and 142/951 (14.9%) of individuals with indistinct symptoms and a positive FOBT. In the latter group, less-advanced tumors, classed as such using Dukes' classification, were twice as common and more advanced CRC occurred twice as seldom than in the former. Cancer recurrence-free and overall survival periods after surgical treatment for CRC were significantly longer in patients with indistinct symptoms who qualified for diagnostic procedures on the basis of a positive FOBT. CONCLUSIONS Patients with symptoms suggesting organic colon disease had a worse prognosis compared to individuals with non-specific symptoms. If bowel endoscopy is not widely and easily available, qualification for colonoscopy on the basis of alarm symptoms and a positive FOBT seems to be an effective strategy in early CRC diagnosis.
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Affiliation(s)
- Zbigniew Banaszkiewicz
- Department of General, Gastrointestinal, Colorectal and Oncological Surgery, Chair of Vascular Surgery and Angiology, Faculty of Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Poland; Department of General, Gastrointestinal, Colorectal and Oncological Surgery, Jan Biziel University Hospital No. 2 in Bydgoszcz, Poland
| | - Jacek Budzyński
- Chair of Vascular and Internal Diseases, Faculty of Health Sciences, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Poland.
| | - Krzysztof Tojek
- Department of General, Gastrointestinal, Colorectal and Oncological Surgery, Jan Biziel University Hospital No. 2 in Bydgoszcz, Poland
| | - Paweł Jarmocik
- Department of General, Gastrointestinal, Colorectal and Oncological Surgery, Jan Biziel University Hospital No. 2 in Bydgoszcz, Poland
| | - Jacek Frasz
- Department of General, Gastrointestinal, Colorectal and Oncological Surgery, Jan Biziel University Hospital No. 2 in Bydgoszcz, Poland
| | - Marcin Mrozowski
- Department of General, Gastrointestinal, Colorectal and Oncological Surgery, Jan Biziel University Hospital No. 2 in Bydgoszcz, Poland
| | - Maciej Świtoński
- Department of General, Gastrointestinal, Colorectal and Oncological Surgery, Jan Biziel University Hospital No. 2 in Bydgoszcz, Poland
| | - Arkadiusz Jawień
- Department of General, Gastrointestinal, Colorectal and Oncological Surgery, Chair of Vascular Surgery and Angiology, Faculty of Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Poland; Chair of Vascular Surgery and Angiology, Faculty of Medicine, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Poland
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