Associations of defect mismatch repair genes with prognosis and heredity in sporadic colorectal cancer
(2017) In European Journal of Surgical Oncology 43(2). p.311-321- Abstract
Background Microsatellite instability arises due to defect mismatch repair (MMR) and occurs in 10–20% of sporadic colorectal cancer. The purpose was to investigate correlations between defect MMR, prognosis and heredity for colorectal cancer in first-degree relatives. Material and methods Tumour tissues from 318 patients consecutively operated for colorectal cancer were analysed for immunohistochemical expression of MLH1, MSH2 and MSH6 on tissue microarrays. Information on KRAS and BRAF mutation status was available for selected cases. Results Forty-seven (15%) tumours displayed MSI. No correlation was seen between patients exhibiting MSI in the tumour and heredity (p = 0.789). Patients with proximal colon cancer and MSI had an improved... (More)
Background Microsatellite instability arises due to defect mismatch repair (MMR) and occurs in 10–20% of sporadic colorectal cancer. The purpose was to investigate correlations between defect MMR, prognosis and heredity for colorectal cancer in first-degree relatives. Material and methods Tumour tissues from 318 patients consecutively operated for colorectal cancer were analysed for immunohistochemical expression of MLH1, MSH2 and MSH6 on tissue microarrays. Information on KRAS and BRAF mutation status was available for selected cases. Results Forty-seven (15%) tumours displayed MSI. No correlation was seen between patients exhibiting MSI in the tumour and heredity (p = 0.789). Patients with proximal colon cancer and MSI had an improved cancer-specific survival (p = 0.006) and prolonged time to recurrence (p = 0.037). In a multivariate analysis including MSI status, gender, CEA, vascular and neural invasion, patients with MSS and proximal colon cancer had an impaired cancer-specific survival compared with patients with MSI (HR, 4.32; CI, 1.46–12.78). The same prognostic information was also seen in distal colon cancer; no recurrences seen in the eight patients with stages II and III distal colon cancer and MSI, but the difference was not statistically significant. Conclusion No correlation between MSI and heredity for colorectal cancer in first-degree relatives was seen. Patients with MSI tumours had improved survival.
(Less)
- author
- Ghanipour, L. ; Jirström, K. LU ; Sundström, M. ; Glimelius, B and Birgisson, H. LU
- organization
- publishing date
- 2017-02-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Colorectal cancer, Heredity, MSI, MSS, Prognosis, TMA
- in
- European Journal of Surgical Oncology
- volume
- 43
- issue
- 2
- pages
- 311 - 321
- publisher
- Elsevier
- external identifiers
-
- scopus:85009997402
- pmid:27836416
- wos:000394072300011
- ISSN
- 0748-7983
- DOI
- 10.1016/j.ejso.2016.10.013
- language
- English
- LU publication?
- yes
- id
- 01a380fa-b87b-42fd-88e2-f7501e6b3221
- date added to LUP
- 2017-02-03 14:51:35
- date last changed
- 2025-01-12 20:45:11
@article{01a380fa-b87b-42fd-88e2-f7501e6b3221, abstract = {{<p>Background Microsatellite instability arises due to defect mismatch repair (MMR) and occurs in 10–20% of sporadic colorectal cancer. The purpose was to investigate correlations between defect MMR, prognosis and heredity for colorectal cancer in first-degree relatives. Material and methods Tumour tissues from 318 patients consecutively operated for colorectal cancer were analysed for immunohistochemical expression of MLH1, MSH2 and MSH6 on tissue microarrays. Information on KRAS and BRAF mutation status was available for selected cases. Results Forty-seven (15%) tumours displayed MSI. No correlation was seen between patients exhibiting MSI in the tumour and heredity (p = 0.789). Patients with proximal colon cancer and MSI had an improved cancer-specific survival (p = 0.006) and prolonged time to recurrence (p = 0.037). In a multivariate analysis including MSI status, gender, CEA, vascular and neural invasion, patients with MSS and proximal colon cancer had an impaired cancer-specific survival compared with patients with MSI (HR, 4.32; CI, 1.46–12.78). The same prognostic information was also seen in distal colon cancer; no recurrences seen in the eight patients with stages II and III distal colon cancer and MSI, but the difference was not statistically significant. Conclusion No correlation between MSI and heredity for colorectal cancer in first-degree relatives was seen. Patients with MSI tumours had improved survival.</p>}}, author = {{Ghanipour, L. and Jirström, K. and Sundström, M. and Glimelius, B and Birgisson, H.}}, issn = {{0748-7983}}, keywords = {{Colorectal cancer; Heredity; MSI; MSS; Prognosis; TMA}}, language = {{eng}}, month = {{02}}, number = {{2}}, pages = {{311--321}}, publisher = {{Elsevier}}, series = {{European Journal of Surgical Oncology}}, title = {{Associations of defect mismatch repair genes with prognosis and heredity in sporadic colorectal cancer}}, url = {{http://dx.doi.org/10.1016/j.ejso.2016.10.013}}, doi = {{10.1016/j.ejso.2016.10.013}}, volume = {{43}}, year = {{2017}}, }