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Deficient mismatch repair as a prognostic marker in stage II colon cancer patients
Umeå universitet, Medicinska fakulteten, Institutionen för kirurgisk och perioperativ vetenskap, Kirurgi. (Clister)
Umeå universitet, Medicinska fakulteten, Institutionen för kirurgisk och perioperativ vetenskap, Kirurgi.
Department of Oncological Pathology, Masaryk Memorial Cancer Institute, Brno, Czech Republic.
Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic.
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2019 (Engelska)Ingår i: European Journal of Surgical Oncology, ISSN 0748-7983, E-ISSN 1532-2157, Vol. 45, nr 10, s. 1854-1861Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

BACKGROUND: A number of reports have evaluated the relationship between deficient DNA mismatch repair (dMMR) and colorectal cancer prognosis. Unfortunately, the exact prognostic role of dMMR has not been clearly established due to contradictory results. This study aims to determine the prognostic impact of dMRR in stage II colon cancer patients only. The appropriate identification of high-risk stage II colon cancers is of paramount importance in the selection of patients who may benefit from adjuvant treatment after surgery.

METHODS: Four hundred and fifty-two patients with curative resection of stage II colon cancer were included. Hospital records were used as data source, providing clinical, surgical, pathology, oncology and follow-up information for statistical analysis focusing on overall survival (OS) and time to progression (TTP). Mismatch repair status was determined by immunohistochemistry. Patient survival was followed-up for a mean of 77·35 months.

RESULTS: dMMR was detected in 93 of 452 patients (20·6%). No impact on overall survival (Log-Rank, p = 0·583, 95% CI 0·76-1·67). However, the hazard ratio 0·50 for TTP was highly significant (Log-Rank, p = 0·012, 95% CI 0·28-0·87) in patients with dMMR compared with those with mismatch repair proficient tumours (pMMR).

CONCLUSIONS: Patients with dMMR tumours have a lower risk for recurrence compared to those with pMMR tumours, but this finding did not correlate to better overall survival.

Ort, förlag, år, upplaga, sidor
Elsevier, 2019. Vol. 45, nr 10, s. 1854-1861
Nyckelord [en]
Colon cancer, Prognostic factors, Stage II, dMMR
Nationell ämneskategori
Kirurgi
Identifikatorer
URN: urn:nbn:se:umu:diva-161631DOI: 10.1016/j.ejso.2019.05.023ISI: 00491301600016PubMedID: 31186203OAI: oai:DiVA.org:umu-161631DiVA, id: diva2:1369903
Forskningsfinansiär
Cancerforskningsfonden i NorrlandVisare NorrTillgänglig från: 2019-11-13 Skapad: 2019-11-13 Senast uppdaterad: 2019-11-19Bibliografiskt granskad

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Gkekas, IoannisNovotny, JanPalmqvist, RichardStrigård, KarinGunnarsson, Ulf

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Gkekas, IoannisNovotny, JanPalmqvist, RichardStrigård, KarinGunnarsson, Ulf
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European Journal of Surgical Oncology
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