scholarly journals Incidence of interval cancers in faecal immunochemical test colorectal screening programmes in Italy

2017 ◽  
Vol 25 (1) ◽  
pp. 32-39 ◽  
Author(s):  
Paolo Giorgi Rossi ◽  
Elisa Carretta ◽  
Lucia Mangone ◽  
Susanna Baracco ◽  
Diego Serraino ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Confidence Interval ◽  
Cancer Registries ◽  
Screening Tests ◽  
Interval Cancers ◽  
Faecal Immunochemical Test ◽  
Immunochemical Test ◽  
Second Year ◽  
Colorectal Screening ◽  
Proportional Incidence

Objective In Italy, colorectal screening programmes using the faecal immunochemical test from ages 50 to 69 every two years have been in place since 2005. We aimed to measure the incidence of interval cancers in the two years after a negative faecal immunochemical test, and compare this with the pre-screening incidence of colorectal cancer. Methods Using data on colorectal cancers diagnosed in Italy from 2000 to 2008 collected by cancer registries in areas with active screening programmes, we identified cases that occurred within 24 months of negative screening tests. We used the number of tests with a negative result as a denominator, grouped by age and sex. Proportional incidence was calculated for the first and second year after screening. Results Among 579,176 and 226,738 persons with negative test results followed up at 12 and 24 months, respectively, we identified 100 interval cancers in the first year and 70 in the second year. The proportional incidence was 13% (95% confidence interval 10–15) and 23% (95% confidence interval 18–25), respectively. The estimate for the two-year incidence is 18%, which was slightly higher in females (22%; 95% confidence interval 17–26), and for proximal colon (22%; 95% confidence interval 16–28). Conclusion The incidence of interval cancers in the two years after a negative faecal immunochemical test in routine population-based colorectal cancer screening was less than one-fifth of the expected incidence. This is direct evidence that the faecal immunochemical test-based screening programme protocol has high sensitivity for cancers that will become symptomatic.

scholarly journals Interval cancers after negative immunochemical test compared to screen and non-responders’ detected cancers in Slovenian colorectal cancer screening programme

2018 ◽  
Vol 52 (4) ◽  
pp. 413-421 ◽  
Author(s):  
Dominika Novak Mlakar ◽  
Tatjana Kofol Bric ◽  
Ana Lucija Škrjanec ◽  
Mateja Krajc
Keyword(s):  
Colorectal Cancer ◽  
Cancer Screening ◽  
Colorectal Cancer Screening ◽  
Screening Test ◽  
Screening Programme ◽  
Interval Cancers ◽  
Faecal Immunochemical Test ◽  
Test Sensitivity ◽  
Cancer Screening Programme ◽  
Immunochemical Test

Abstract Background We assessed the incidence and characteristics of interval cancers after faecal immunochemical occult blood test and calculated the test sensitivity in Slovenian colorectal cancer screening programme. Patients and methods The analysis included the population aged between 50 to 69 years, which was invited for screening between April 2011 and December 2012. The persons were followed-up until the next foreseen invitation, in average for 2 years. The data on interval cancers and cancers in non-responders were obtained from cancer registry. Gender, age, years of schooling, the cancer site and stage were compared among three observed groups. We used the proportional incidence method to calculate the screening test sensitivity. Results Among 502,488 persons invited for screening, 493 cancers were detected after positive screening test, 79 interval cancers after negative faecal immunochemical test and 395 in non-responders. The proportion of interval cancers was 13.8%. Among the three observed groups cancers were more frequent in men (p = 0.009) and in persons aged 60+ years (p < 0.001). Comparing screen detected and cancers in non-responders with interval cancers more interval cancers were detected in persons with 10 years of schooling or more (p = 0.029 and p = 0.001), in stage III (p = 0.027) and IV (p < 0.001), and in right hemicolon (p < 0.001). Interval cancers were more frequently in stage I than non-responders cancers (p = 0.004). Test sensitivity of faecal immunochemical test was 88.45%. Conclusions Interval cancers in Slovenian screening programme were detected in expected proportions as in similar programmes. Test sensitivity was among the highest when compared to similar programmes and was accomplished using test kit for two stool samples.

scholarly journals Choice of faecal immunochemical test matters: comparison of OC-Sensor and HM-JACKarc, in the assessment of patients at high risk of colorectal cancer

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Caroline J. Chapman ◽  
Ayan Banerjea ◽  
David J Humes ◽  
Jaren Allen ◽  
Simon Oliver ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Clinical Decision Making ◽  
Full Range ◽  
Clinical Decision ◽  
Detection Rates ◽  
Faecal Immunochemical Test ◽  
Specimen Collection ◽  
Increased Risk ◽  
Immunochemical Test

AbstractObjectivesCurrently, NICE recommends the use of faecal immunochemical test (FIT) at faecal haemoglobin concentrations (f-Hb) of 10 μg Hb/g faeces to stratify for colorectal cancer (CRC) risk in symptomatic populations. This f-Hb cut-off is advised across all analysers, despite the fact that a direct comparison of analyser performance, in a clinical setting, has not been performed.MethodsTwo specimen collection devices (OC-Sensor, OC-S; HM-JACKarc, HM-J) were sent to 914 consecutive individuals referred for follow up due to their increased risk of CRC. Agreement of f-Hb around cut-offs of 4, 10 and 150 µg Hb/g faeces and CRC detection rates were assessed. Two OC-S devices were sent to a further 114 individuals, for within test comparisons.ResultsA total of 732 (80.1%) individuals correctly completed and returned two different FIT devices, with 38 (5.2%) CRCs detected. Median f-Hb for individuals diagnosed with and without CRC were 258.5 and 1.8 µg Hb/g faeces for OC-S and 318.1 and 1.0 µg Hb/g faeces for HM-J respectively. Correlation of f-Hb results between OC-S/HM-J over the full range was rho=0.74, p<0.001. Using a f-Hb of 4 µg Hb/g faeces for both tests found an agreement of 88.1%, at 10 µg Hb/g faeces 91.7% and at 150 µg Hb/g faeces 96.3%. A total of 114 individuals completed and returned two OC-S devices; correlation across the full range was rho=0.98, p<0.001.ConclusionsWe found large variations in f-Hb when different FIT devices were used, but a smaller variation when the same FIT device was used. Our data suggest that analyser-specific f-Hb cut-offs are applied with regard to clinical decision making, especially at lower f-Hb.

scholarly journals Impact of screening programme using the faecal immunochemical test on stage of colorectal cancer: Results from the IMPATTO study

2019 ◽  
Vol 145 (1) ◽  
pp. 110-121 ◽  
Author(s):  
Massimo Vicentini ◽  
Manuel Zorzi ◽  
Emanuela Bovo ◽  
Pamela Mancuso ◽  
Marco Zappa ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Screening Programme ◽  
Faecal Immunochemical Test ◽  
Immunochemical Test

scholarly journals Optimal diagnostic accuracy of quantitative faecal immunochemical test positivity thresholds for colorectal cancer detection in primary health care: A community-based cohort study

2020 ◽  
pp. 205064062094971 ◽  
Author(s):  
Noel Pin-Vieito ◽  
Laura García Nimo ◽  
Luis Bujanda ◽  
Begoña Román Alonso ◽  
María Ángeles Gutiérrez-Stampa ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Health Care ◽  
Cohort Study ◽  
Primary Health Care ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Clinical Laboratory ◽  
Faecal Immunochemical Test ◽  
Primary Health ◽  
Immunochemical Test

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.

Participation in a population-based screening for colorectal cancer using the faecal immunochemical test decreases mortality in 5 years

2019 ◽  
Vol 31 (2) ◽  
pp. 197-204 ◽  
Author(s):  
Isabel Idigoras Rubio ◽  
Eunate Arana-Arri ◽  
Isabel Portillo Villares ◽  
Isabel Bilbao Iturribarrria ◽  
Lorea Martínez-Indart ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Population Based ◽  
Faecal Immunochemical Test ◽  
Immunochemical Test
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