ArticleBMC gastroenterology2022
A simplified multiplex methylated DNA testing for early detection of colorectal cancer in stool DNA.
Article in BMC gastroenterology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 2 of them syntheses that pooled it.
What it found
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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.
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.
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Who cites it
6 citing papers in PubMed, 2 syntheses or guidelines pooled it, 4 citations in OpenAlex.
- Fecal DNA SDC2 methylation test for colorectal cancer diagnosis: A systematic review and meta-analysis.Biomolecules & biomedicine · 2026Pooled it
- Comparative analysis of SDC2 and SEPT9 methylation tests in the early detection of colorectal cancer: a systematic review and meta-analysis.Frontiers in medicine · 2024Pooled it
- Clinical applications of gut microbiome for non-invasive diagnosis of colorectal neoplasia.Journal of gastroenterology · 2026Article
- Stool and blood biomarkers for colorectal cancer management: an update on screening and disease monitoring.Molecular cancer · 2024Review
- Advances in blood DNA methylation-based assay for colorectal cancer early detection: a systematic updated review.Gastroenterology and hepatology from bed to bench · 2024Review
- DNA Methylation in the Fields of Prenatal Diagnosis and Early Detection of Cancers.International journal of molecular sciences · 2023Review
Corrections and comments
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Authors and funding
12 authors at 5 institutions in 1 country.
Funding
Abstract
backgroundColoDefense1.0 assay has demonstrated its excellent sensitivity and specificity for early detection of colorectal cancer (CRC) by detecting the methylation levels of SDC2 and SEPT9, while exhibited limitations on relatively large sample capacity required and limited detection throughput by applying triplicate PCR reactions for each sample. In this study, ColoDefense1.0 was simplified and optimized into ColoDefense2.0 in a single PCR reaction.
methodsA total 529 stool specimens were collected, and 244 CRC patients, 34 patients with advanced adenomas (AA), 64 with small polyps (SP) and 187 control subjects were divided in training and validation cohorts. Methylation levels of SEPT9 and SDC2 were examined by qPCR reactions in triplicate or single.
resultsThe stool DNA quantity stored in preservative buffer at 37 °C up to 7 days exhibited no significant decrease. In the training cohort, when the number of replicates reduced from 3 to 1, the overall performance of ColoDefense2.0 was identical to that of ColoDefense1.0, showing sensitivities of 71.4% for AA and 90.8% for all stage CRC with a specificity of 92.9%. In the validation cohort, sensitivities of SP, AA and CRC using ColoDefense2.0 were 25.0%, 55.0% and 88.2%, increased from 14.1% (20.3%), 40.0% (40.0%) and 79.4% (67.6%) using SDC2 (SEPT9) alone; along with an overall specificity of 90.2%, decreased from 94.1% (95.1%) using SDC2 (SEPT9) alone.
conclusionThe simplified ColoDefense test maintained the overall performance while reduced the number of PCR reactions to 1/3, and provided an effective and convenient tool to detect early CRC and precancerous lesions and potentially improve the compliance of screening.
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