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Prognostic markers for colorectal cancer: estimating ploidy and stroma.


ABSTRACT: Background:We report here the prognostic value of ploidy and digital tumour-stromal morphometric analyses using material from 2624 patients with early stage colorectal cancer (CRC). Patients and methods:DNA content (ploidy) and stroma-tumour fraction were estimated using automated digital imaging systems and DNA was extracted from sections of formalin-fixed paraffin-embedded (FFPE) tissue for analysis of microsatellite instability. Samples were available from 1092 patients recruited to the QUASAR 2 trial and two large observational series (Gloucester, n?=?954; Oslo University Hospital, n?=?578). Resultant biomarkers were analysed for prognostic impact using 5-year cancer-specific survival (CSS) as the clinical end point. Results:Ploidy and stroma-tumour fraction were significantly prognostic in a multivariate model adjusted for age, adjuvant treatment, and pathological T-stage in stage II patients, and the combination of ploidy and stroma-tumour fraction was found to stratify these patients into three clinically useful groups; 5-year CSS 90% versus 83% versus 73% [hazard ratio (HR)?=?1.77 (95% confidence interval (95% CI): 1.13-2.77) and HR?=?2.95 (95% CI: 1.73-5.03), P?

SUBMITTER: Danielsen HE 

PROVIDER: S-EPMC5889021 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

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Prognostic markers for colorectal cancer: estimating ploidy and stroma.

Danielsen H E HE   Hveem T S TS   Domingo E E   Pradhan M M   Kleppe A A   Syvertsen R A RA   Kostolomov I I   Nesheim J A JA   Askautrud H A HA   Nesbakken A A   Lothe R A RA   Svindland A A   Shepherd N N   Novelli M M   Johnstone E E   Tomlinson I I   Kerr R R   Kerr D J DJ  

Annals of oncology : official journal of the European Society for Medical Oncology 20180301 3


<h4>Background</h4>We report here the prognostic value of ploidy and digital tumour-stromal morphometric analyses using material from 2624 patients with early stage colorectal cancer (CRC).<h4>Patients and methods</h4>DNA content (ploidy) and stroma-tumour fraction were estimated using automated digital imaging systems and DNA was extracted from sections of formalin-fixed paraffin-embedded (FFPE) tissue for analysis of microsatellite instability. Samples were available from 1092 patients recruit  ...[more]

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