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Multitarget Stool DNA Test Performance in an Average-Risk Colorectal Cancer Screening Population

  • L. J. W. Bosch
  • , V. Melotte
  • , S. Mongera
  • , K. L. J. Daenen
  • , V. M. H. Coupe
  • , S. T. van Turenhout
  • , E. M. Stoop
  • , T. R. de Wijkerslooth
  • , C. J. J. Mulder
  • , C. Rausch
  • , E. J. Kuipers
  • , E. Dekker
  • , M. J. Domanico
  • , G. P. Lidgard
  • , B. M. Berger
  • , M. van Engeland
  • , B. Carvalho
  • , G. A. Meijer*
  • *Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

INTRODUCTION: We set out to evaluate the performance of a multitarget stool DNA (MT-sDNA) in an average-risk colonoscopy-controlled colorectal cancer (CRC) screening population. MT-sDNA stool test results were evaluated against fecal immunochemical test (FIT) results for the detection of different lesions, including molecularly defined high-risk adenomas and several other tumor characteristics.

METHODS: Whole stool samples (n = 1,047) were prospectively collected and subjected to an MT-sDNA test, which tests for KRAS mutations, NDRG4 and BMP3 promoter methylation, and hemoglobin. Results for detecting CRC (n = 7), advanced precancerous lesions (advanced adenoma [AA] and advanced serrated polyps; n = 119), and non-AAs (n = 191) were compared with those of FIT alone (thresholds of 50, 75, and 100 hemoglobin/mL). AAs with high risk of progression were defined by the presence of specific DNA copy number events as measured by low-pass whole genome sequencing.

RESULTS: The MT-sDNA test was more sensitive than FIT alone in detecting advanced precancerous lesions (46% (55/119) vs 27% (32/119), respectively, P<0.001). Specificities among individuals with nonadvanced or negative findings (controls) were 89% (791/888) and 93% (828/888) for MT-sDNA and FIT testing, respectively. A positive MT-sDNA test was associated with multiple lesions (P = 0.005), larger lesions (P = 0.03), and lesions with tubulovillous architecture (P = 0.04). The sensitivity of the MT-sDNA test or FIT in detecting individuals with high-risk AAs (n = 19) from individuals with low-risk AAs (n = 52) was not significantly different.

DISCUSSION: In an average-risk screening population, the MT-sDNA test has an increased sensitivity for detecting advanced precancerous lesions compared with FIT alone. AAs with a high risk of progression were not detected with significantly higher sensitivity by MT-sDNA or FIT.

Original languageEnglish
Pages (from-to)1909-1918
Number of pages10
JournalAmerican Journal of Gastroenterology
Volume114
Issue number12
DOIs
Publication statusPublished - Dec 2019

Keywords

  • ADENOMA
  • BIOMARKER
  • COLONOSCOPY
  • IMPACT
  • METHYLATION
  • MORTALITY
  • PROGRESSION

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