The goal of the overall CASUS project is to develop the first fully molecular integrated cervical cancer screening approach, based on first-void urine as an easily accessible and non-invasive source of biomarkers. In contrast to current screening modalities, the CASUS approach will identify women with clinically relevant disease in need of treatment using only a single sample that can be collected at home (one-step triage).
CASUS work package 4 (WP4): The main aim of this study is to validate the HPV-Risk assay (Self-screen, The Netherlands) followed by multiplex methylation specific quantitative PCR (qMSP, VU University Medical Center, The Netherlands) on first-void urine (Colli-Pee Small Volumes (10 mL) device, Novosanis, Belgium) of HPV positive women for detection of clinically relevant precursor lesions by sampling a cohort of women referred for colposcopy. The number of women in this cohort will allow us to clinically validate the use of the HPV-Risk/qMSP assay in DNA extracts of first-void samples after optimization of sample volume, internal process control, and DNA extraction method (Centre for the Evaluation of Vaccination, University of Antwerp, Belgium).
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
332
Women will self-collect two first-void urine samples at home the day prior to colposcopy using the new generation Colli-Pee Small Volumes (10 mL) device (Novosanis, Belgium). The collector tube will be prefilled with a non-toxic nucleic acid preservative including an internal process control.
Vrouwenkliniek - Universitair Ziekenhuis Gent (UZ Gent)
Ghent, Oost-Vlaanderen, Belgium
Femicare VZW & Departement Verloskunde & Gynaecologie - Regionaal Heilig Hart Ziekenhuis Tienen
Tienen, Vlaams-Brabant, Belgium
Gynécologie-obstétrique - CHU de Liège
Liège, Belgium
HPV DNA (HPV16, HPV18, other high-risk HPV (HPV31, -33, -35, -39, -45, -51, -52, -56, -58, -59, -66, -67, and -68)) measured using the HPV-risk assay (Self-Screen BV).
Analytical test results: HPV DNA (HPV16, HPV18, other high-risk HPV (HPV31, -33, -35, -39, -45, -51, -52, -56, -58, -59, -66, -67, and -68)) concentrations \[cycle threshold values\] in first-void urine samples from all study participants. Clinical test accuracy: HPV DNA (HPV16, HPV18, other high-risk HPV (HPV31, -33, -35, -39, -45, -51, -52, -56, -58, -59, -66, -67, and -68)) test outcomes \[positive, negative\] in first-void urine samples from all study participants compared to the gold standard reference test for cervical cancer screening; i.e. histology \[Cervical Intraepithelial Neoplasia grade 0-3+\].
Time frame: Through study completion, an average of 1 year
Methylation ratio of a host cell gene marker panel (PreCursor-U+) measured using quantitative methylation specific PCR (qMSP).
Analytical test results: Methylation levels of a host cell gene marker panel (PreCursor-U+) reported in a methylation ratio \[(2\^-deltaCT \*100) with CT being cycle threshold values\] in first-void urine samples from all study participants. Clinical test accuracy: Methylation panel (PreCursor-U+) test outcomes \[positive, negative\] in first-void urine samples from all study participants compared to the gold standard reference test for cervical cancer screening; i.e. histology \[Cervical Intraepithelial Neoplasia grade 0-3+\].
Time frame: Through study completion, an average of 1 year
Human DNA (GAPDH)
Human DNA (GAPDH) concentrations \[cycle threshold values\] in first-void urine samples from all study participants measured by quantitative PCR (qPCR).
Time frame: Through study completion, an average of 1 year
Internal control DNA (IC DNA)
Internal control DNA (IC DNA) concentrations \[cycle threshold values\] in first-void urine samples from all study participants measured by quantitative PCR (qPCR).
Time frame: Through study completion, an average of 1 year
Human DNA (Beta-globin)
Human DNA (Beta-globin) concentrations \[cycle threshold values\] in first-void urine samples from all study participants measured using the HPV-risk assay (Self-Screen BV).
Time frame: Through study completion, an average of 1 year
Human DNA reference gene (ACTB)
Human DNA reference gene (ACTB) concentrations \[cycle threshold values\] in first-void urine samples from all study participants measured by quantitative methylation specific PCR (qMSP).
Time frame: Through study completion, an average of 1 year
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.