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Clinicopathological significance of microsatellite instability and mutated RIZ in colorectal cancer
Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi.
Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för biomedicin och kirurgi, Avdelningen för kirurgi. Östergötlands Läns Landsting, Kirurgi- och onkologicentrum, Kirurgiska kliniken i Östergötland med verksamhet i Linköping, Norrköping och Motala.
Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för biomedicin och kirurgi, Onkologi. Östergötlands Läns Landsting, Kirurgi- och onkologicentrum, Onkologiska kliniken US.
2004 (engelsk)Inngår i: Annals of Oncology, ISSN 0923-7534, E-ISSN 1569-8041, Vol. 15, nr 2, s. 242-246Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Background: Several studies have shown that microsatellite instability (MSI) is related to favourable survival in colorectal cancer patients but there are controversial results. Tumour suppressor gene RIZ is a susceptible mutational target of MSI. However, its clinicopathological significance has not been investigated. We investigated the prognostic significance of MSI in Swedish colorectal cancer patients and the clinicopathological significance of RIZ mutations. Patients and methods: We analysed 438 colorectal adenocarcinomas for MSI by microsatellite analysis. Among them, 29 MSI and 28 microsatellite stable (MSS) tumours were examined for RIZ mutations by DNA sequencing. Results: MSI (13% of 438 cases) was not associated with survival (rate ratio=0.97, 95% confidence interval =0.57-1.64, P=0.90), although it was related to proximal tumour (P <0.001), poor differentiation and mucinous carcinomas (P <0.001), multiple tumours (P=0.01) and negative/weak expression of hMLH1 (P=0.03). RIZ mutations were detected in 31% of 29 MSI tumours but in none of the 28 MSS tumours. The mutations were related to female (P=0.01), proximal tumour (P=0.01), stage B (P=0.01) and poor differentiation (P=0.047). Conclusions: MSI was not a prognostic factor in the Swedish patients included in this study. Clinicopathological variables associated with RIZ mutations might be a consequence of the MSI characteristics.

sted, utgiver, år, opplag, sider
2004. Vol. 15, nr 2, s. 242-246
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URN: urn:nbn:se:liu:diva-23945DOI: 10.1093/annonc/mdh045Lokal ID: 3494OAI: oai:DiVA.org:liu-23945DiVA, id: diva2:244260
Tilgjengelig fra: 2009-10-07 Laget: 2009-10-07 Sist oppdatert: 2017-12-13

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