TY - JOUR
T1 - Novel DNA methylation biomarkers show high sensitivity and specificity for blood-based detection of colorectal cancer- A clinical biomarker discovery and validation study
AU - Jensen, Sarah Østrup
AU - Øgaard, Nadia
AU - Ørntoft, Mai Britt Worm
AU - Rasmussen, Mads Heilskov
AU - Bramsen, Jesper Bertram
AU - Kristensen, Helle
AU - Mouritzen, Peter
AU - Madsen, Mogens Rørbæk
AU - Madsen, Anders Husted
AU - Sunesen, Kåre Gotschalck
AU - Iversen, Lene Hjerrild
AU - Laurberg, Søren
AU - Christensen, Ib Jarle
AU - Nielsen, Hans Jørgen
AU - Andersen, Claus Lindbjerg
PY - 2019
Y1 - 2019
N2 - Background: Early detection plays an essential role to reduce colorectal cancer (CRC) mortality. While current screening methods suffer from poor compliance, liquid biopsy-based strategies for cancer detection is rapidly gaining promise. Here, we describe the development of TriMeth, a minimal-invasive blood-based test for detection of early-stage colorectal cancer. The test is based on assessment of three tumour-specific DNA methylation markers in circulating cell-free DNA. Results: A thorough multi-step biomarker discovery study based on DNA methylation profiles of more than 5000 tumours and blood cell populations identified CRC-specific DNA methylation markers. The DNA methylation patterns of biomarker candidates were validated by bisulfite sequencing and methylation-specific droplet digital PCR in CRC tumour tissue and peripheral blood leucocytes. The three best performing markers were first applied to plasma from 113 primarily early-stage CRC patients and 87 age- A nd gender-matched colonoscopy-verified controls. Based on this, the test scoring algorithm was locked, and then TriMeth was validated in an independent cohort comprising 143 CRC patients and 91 controls. Three DNA methylation markers, C9orf50, KCNQ5, and CLIP4, were identified, each capable of discriminating plasma from colorectal cancer patients and healthy individuals (areas under the curve 0.86, 0.91, and 0.88). When combined in the TriMeth test, an average sensitivity of 85% (218/256) was observed (stage I: 80% (33/41), stage II: 85% (121/143), stage III: 89% (49/55), and stage IV: 88% (15/17)) at 99% (176/178) specificity in two independent plasma cohorts. Conclusion: TriMeth enables detection of early-stage colorectal cancer with high sensitivity and specificity. The reported results underline the potential utility of DNA methylation-based detection of circulating tumour DNA in the clinical management of colorectal cancer.
AB - Background: Early detection plays an essential role to reduce colorectal cancer (CRC) mortality. While current screening methods suffer from poor compliance, liquid biopsy-based strategies for cancer detection is rapidly gaining promise. Here, we describe the development of TriMeth, a minimal-invasive blood-based test for detection of early-stage colorectal cancer. The test is based on assessment of three tumour-specific DNA methylation markers in circulating cell-free DNA. Results: A thorough multi-step biomarker discovery study based on DNA methylation profiles of more than 5000 tumours and blood cell populations identified CRC-specific DNA methylation markers. The DNA methylation patterns of biomarker candidates were validated by bisulfite sequencing and methylation-specific droplet digital PCR in CRC tumour tissue and peripheral blood leucocytes. The three best performing markers were first applied to plasma from 113 primarily early-stage CRC patients and 87 age- A nd gender-matched colonoscopy-verified controls. Based on this, the test scoring algorithm was locked, and then TriMeth was validated in an independent cohort comprising 143 CRC patients and 91 controls. Three DNA methylation markers, C9orf50, KCNQ5, and CLIP4, were identified, each capable of discriminating plasma from colorectal cancer patients and healthy individuals (areas under the curve 0.86, 0.91, and 0.88). When combined in the TriMeth test, an average sensitivity of 85% (218/256) was observed (stage I: 80% (33/41), stage II: 85% (121/143), stage III: 89% (49/55), and stage IV: 88% (15/17)) at 99% (176/178) specificity in two independent plasma cohorts. Conclusion: TriMeth enables detection of early-stage colorectal cancer with high sensitivity and specificity. The reported results underline the potential utility of DNA methylation-based detection of circulating tumour DNA in the clinical management of colorectal cancer.
KW - Cancer
KW - Circulating tumour DNA
KW - Colorectal cancer
KW - DNA methylation
KW - Early detection
KW - Epigenetic biomarkers
KW - Liquid biopsy
UR - http://www.scopus.com/inward/record.url?scp=85075113935&partnerID=8YFLogxK
U2 - 10.1186/s13148-019-0757-3
DO - 10.1186/s13148-019-0757-3
M3 - Journal article
C2 - 31727158
AN - SCOPUS:85075113935
SN - 1868-7075
VL - 11
JO - Clinical Epigenetics
JF - Clinical Epigenetics
IS - 1
M1 - 158
ER -