Evidence map›Paper›PMID 34907419›Full record

SynthesisThe British journal of surgery2022

Faecal immunochemical test to triage patients with possible colorectal cancer symptoms: meta-analysis.

Kai Sheng Saw, Chen Liu, William Xu, Chris Varghese, Susan Parry, Ian Bissett

Erratum issued 2 registry-linked trialsOpen access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in The British journal of surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to 2 registered trials, which are not on this map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
6.1field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07430527 recruitingnot on this mapstarted 2026, after this paper: background citation

A Retrospective Review of the Secondary-care Colorectal Cancer Pathway Within NHS Lothian: An Evaluation of 3 Years of Pathway Performance

TypeobservationalSponsorUniversity of EdinburghRan2026 to 2030Enrolled25,000ConditionsColorectal Cancer (Diagnosis)ArmsFaecal Immunohistochemical test
NCT07430540 narecruitingnot on this mapstarted 2026, after this paper: background citation

Optimising Patient Pathways for Earlier Detection of Colorectal Cancer in Secondary Care: Implementation of Multiple FIT Testing

TypeinterventionalSponsorUniversity of EdinburghRan2026 to 2037Enrolled1,000ConditionsColorectal Cancer, Significant Bowel PathologyArmsAdditional FIT testing
3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 33 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Observational
  6. Article
  7. Article
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  10. Review
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  12. Review
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  15. Sociodemographic variations in the uptake of faecal immunochemical tests in primary care: a retrospective study.The British journal of general practice : the journal of the Royal College of General Practitioners · 2023
    Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Faecal immunochemical test: challenges and opportunities for cancer diagnosis in primary care.The British journal of general practice : the journal of the Royal College of General Practitioners · 2022
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Kai Sheng SawDepartment of Surgery, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.ORCID 0000-0001-9621-1993
Chen LiuDepartment of Surgery, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.
William XuDepartment of Surgery, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.ORCID 0000-0002-1270-2769
Chris VargheseDepartment of Surgery, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.ORCID 0000-0001-7369-8639
Susan ParryDepartment of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.
Ian BissettDepartment of Surgery, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.ORCID 0000-0001-6530-2454
University of Auckland · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis review evaluated the utility of single quantitative faecal immunochemical test (FIT) as a triaging tool for patients with symptoms of possible colorectal cancer, the effect of symptoms on FIT accuracy, and the impact of triaging incorporating FIT on service provision.

methodsFive databases were searched. Meta-analyses of the extracted FIT sensitivities and specificities for detection of colorectal cancer at reported f-Hb thresholds were performed. Secondary outcomes included sensitivity and specificity of FIT for advanced colorectal neoplasia and serious bowel disease. Subgroup analysis by FIT brand and symptoms was undertaken.

resultsFifteen prospective cohort studies, including 28 832 symptomatic patients were included. At the most commonly reported f-Hb positivity threshold of ≥ 10 µg Hb/g faeces (n=13), the summary sensitivity was 88.7% (95% c.i. 85.2 to 91.4) and the specificity was 80.5% (95% c.i. 75.3 to 84.8) for colorectal cancer. At lower limits of detection of ≥ 2 µg Hb/g faeces, the summary sensitivity was 96.8% (95% c.i. 91.0 to 98.9) and the specificity was 65.6% (95% c.i. 59.0 to 71.6). At the upper f-Hb positivity thresholds of ≥ 100 µg Hb/g faeces and ≥ 150 µg Hb/g faeces, summary sensitivities were 68.1% (95% c.i. 59.2 to 75.9) and 66.3% (95% c.i. 52.2 to 78.0), with specificities of 93.4% (95% c.i. 91.3 to 95.1) and 95.1% (95% c.i. 93.6 to 96.3) respectively. FIT sensitivity was comparable between different assay brands. FIT sensitivity may be higher in patients reporting rectal bleeding.

conclusionSingle quantitative FIT at lower f-Hb positivity thresholds can adequately exclude colorectal cancer in symptomatic patients and provides a data-based approach to prioritization of colonoscopy resources.

Indexed as

ImmunochemistryOccult BloodColorectal NeoplasmsEarly Detection of CancerFecesHemoglobinsHumansTriageHemoglobins

Identifiers

PMID34907419
PMCPMC10364725
OpenAlexW4200390823

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.