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Haugbo HO, Klepp P, Verket A. Ulcerative colitis and periodontitis - a cross-sectional pilot study from a Norwegian cohort. Acta Odontol Scand 2023; 81:541-548. [PMID: 37171849 DOI: 10.1080/00016357.2023.2210660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 04/30/2023] [Indexed: 05/13/2023]
Abstract
BACKGROUND Inflammatory bowel disease, which includes ulcerative colitis (UC), is an inflammatory disorder with potential impact on periodontal disease, but evidence to date for this association is limited. The primary aim of this study was to investigate the prevalence of periodontitis according to the 2017-classification in a cohort of subjects with UC. The secondary aim was to assess a potential correlation of periodontal status with previous UC disease parameters and to assess oral health-related quality-of-life. METHOD A cohort from a community hospital in Norway with confirmed extensive UC was comprehensively examined. Periodontal parameters, OHIP-14 and demographic variables were collected. Previous UC data including colon activity index (CAI), Mayo score and years of UC diagnosis was used to explore a potential correlation with periodontal status. RESULTS A total of 50 out of 63 invited patients participated. According to the 2017-classification, 74% of the patients presented periodontitis. No correlation was found between periodontitis (stage, grade, bleeding on probing or probing pocket depth ≥6mm) and CAI, Mayo score, or years with UC diagnosis. CONCLUSIONS Within the limitations of this study, the prevalence of periodontitis among patients with mild UC for more than 12 years was in line with that reported from a Norwegian general population. No correlation between periodontitis and UC disease indices or years with UC diagnosis was observed. The study suggests that the susceptibility to periodontitis may be limited in patients with well treated or mild UD who regularly attend the dental office, despite a considerable UC disease duration.
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Affiliation(s)
- Helena O Haugbo
- Department of Hospital Dentistry, Lovisenberg Diaconal Hospital, Oslo, Norway
- Institute of Clinical Dentistry, Department of Periodontology, University of Oslo, Oslo, Norway
| | - Pasquale Klepp
- Department of Gastroenterology, Lovisenberg Diaconal Hospital, Oslo, Norway
| | - Anders Verket
- Institute of Clinical Dentistry, Department of Periodontology, University of Oslo, Oslo, Norway
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Klepp P, Brackmann S, Cvancarova M, Hoivik ML, Hovde Ø, Henriksen M, Huppertz-Hauss G, Bernklev T, Hoie O, Kempski-Monstad I, Solberg IC, Stray N, Jahnsen J, Vatn MH, Moum B. Risk of colorectal cancer in a population-based study 20 years after diagnosis of ulcerative colitis: results from the IBSEN study. BMJ Open Gastroenterol 2020; 7:e000361. [PMID: 32337058 PMCID: PMC7170403 DOI: 10.1136/bmjgast-2019-000361] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/17/2020] [Accepted: 02/21/2020] [Indexed: 02/06/2023] Open
Abstract
Objective The association between ulcerative colitis (UC) and colorectal cancer (CRC) is widely accepted, although attenuated risk has been reported in recent years. Colonoscopic surveillance is recommended with intervals based on established clinical risk factors. Nevertheless, a significant number of patients develop interval cancers, indicating the need of improved individualised assessment. In the present study, we evaluated clinical risk factors associated with CRC during a prescheduled follow-up 20 years after diagnosis, the IBSEN study. Design A population-based inception cohort of patients diagnosed with inflammatory bowel disease from 1 January 1990 until 31 December 1993, prospectively followed at 1, 5, 10 and 20 years after diagnosis. A total of 517 patients with UC were included; 264 (51 %) men; median age at inclusion 37.4 years (4–88). Results The overall incidence of CRC was 1.6% (8/517) at a 20-year follow-up. The total lifetime risk of CRC prior to or after UC diagnosis was 2.3%. (12/517). Patients older than 70 years at diagnosis had a 15-fold higher risk of CRC compared with those diagnosed when younger than 40 years, with HR 15.68 (95% CI: 1.31 to 187.92). Neither sex, first-degree relative with CRC, extent of colitis nor primary sclerosing cholangitis affected the risk of CRC. Conclusion The risk of CRC in UC was low and comparable with the risk of CRC in the background population of Norway.
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Affiliation(s)
- Pasquale Klepp
- Unger-Vetlesen Institute, Lovisenberg Diakonale Hospital, Oslo, Norway.,Department of Gastroenterology, Oslo University Hospital, Oslo, Norway
| | - Stephan Brackmann
- Department of Gastroenterology, Akershus University Hospital, Lorenskog, Norway.,Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
| | - Milada Cvancarova
- Department of Gastroenterology, Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
| | - Marte Lie Hoivik
- Department of Gastroenterology, Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
| | - Øistein Hovde
- Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Gastroenterology, Innlandet Hospital Trust, Gjøvik, Oppland, Norway
| | - Magne Henriksen
- Department of Gastroenterology, Østfold Hospital Trust, Gralum, Kalnes, Norway
| | - Gert Huppertz-Hauss
- Department of Gastroenterology, Telemark Hospital, Ulefossveien, Skien, Norway
| | - Tomm Bernklev
- Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway.,R&D Department, Vestfold Hospital Trust, Tonsberg, Norway
| | - Ole Hoie
- Department of Internal Medicine, Sørlandet Hospital, Sykehusveien, Arendal, Norway
| | | | | | - Njaal Stray
- Department of Internal Medicine, Diakonhjemmet Hospital, Oslo, Norway
| | - Jorgen Jahnsen
- Department of Gastroenterology, Akershus University Hospital, Lorenskog, Norway.,Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
| | - Morten H Vatn
- Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
| | - Bjorn Moum
- Department of Gastroenterology, Oslo University Hospital, Oslo, Norway.,Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway
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Kisiel JB, Klepp P, Allawi HT, Taylor WR, Giakoumopoulos M, Sander T, Yab TC, Moum BA, Lidgard GP, Brackmann S, Mahoney DW, Roseth A, Ahlquist DA. Analysis of DNA Methylation at Specific Loci in Stool Samples Detects Colorectal Cancer and High-Grade Dysplasia in Patients With Inflammatory Bowel Disease. Clin Gastroenterol Hepatol 2019; 17:914-921.e5. [PMID: 29775793 PMCID: PMC6368476 DOI: 10.1016/j.cgh.2018.05.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 03/08/2018] [Accepted: 05/07/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Patients with inflammatory bowel diseases (IBDs), including ulcerative colitis and Crohn's disease, are at increased risk for colorectal cancer (CRC). Analyses of DNA methylation patterns in stool samples have been reported to detect CRC in patients with IBD. We sought to validate these findings in larger cohorts and assess the accuracy of analysis of DNA methylation patterns in stool for detection of CRC and high-grade dysplasia (HGD) normalized to methylation level at ZDHHC1. METHODS We obtained buffered, frozen stool samples from a US case-control study and from 2 European surveillance cohorts (referral or population based) of patients with chronic ulcerative colitis (n = 248), Crohn's disease (n = 82), indeterminate colitis (n = 2), or IBD with primary sclerosing cholangitis (n = 38). Stool samples were collected before bowel preparation for colonoscopy or at least 1 week after colonoscopy. Among the study samples, stools from individuals with IBD but without neoplasia were used as controls (n = 291). DNA was isolated from stool, exposed to bisulfite, and then assayed by multiplex quantitative allele-specific real-time target and signal amplification. We analyzed methylation levels of BMP3, NDRG4, VAV3, and SFMBT2 relative to the methylation level of ZDHHC1, and compared these between patients with CRC or HGD and controls. RESULTS Levels of methylation at BMP3 and VAV3, relative to ZDHHC1 methylation, identified patients with CRC and HGD with an area under the curve value of 0.91 (95% CI, 0.77-1.00). Methylation levels at specific promotor regions of these genes identified 11 of the 12 patients with CRC and HGD, with 92% sensitivity (95% CI, 60%-100%) and 90% specificity (95% CI, 86%-93%). The proportion of false-positive results did not differ significantly among the case-control, referral cohort, and population cohort studies (P = .60) when the 90% specificity cut-off from the whole sample set was applied. CONCLUSIONS In an analysis of stool samples from 3 independent studies of 332 patients with IBD, we associated levels of methylation at 2 genes (BMP3 and VAV3), relative to level of methylation at ZDHHC1, with detection of CRC and HGD. These methylation patterns identified patients with CRC and HGD with more than 90% specificity, and might be used in CRC surveillance.
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Affiliation(s)
- John B Kisiel
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota.
| | - Pasquale Klepp
- Department of Internal Medicine, Lovisenberg Hospital, Oslo, Norway; Clinical Medicine, University Hospital, University of Oslo, Oslo, Norway
| | - Hatim T Allawi
- Department of Gastroenterology, Akershus University Hospital, University of Oslo, Oslo, Norway
| | - William R Taylor
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | | | | | - Tracy C Yab
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Bjorn A Moum
- Department of Gastroenterology, Oslo University Hospital, Oslo, Norway
| | | | - Stephan Brackmann
- Department of Gastroenterology, Akershus University Hospital, University of Oslo, Oslo, Norway; Clinical Medicine, University Hospital, University of Oslo, Oslo, Norway
| | - Douglas W Mahoney
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - Arne Roseth
- Department of Internal Medicine, Lovisenberg Hospital, Oslo, Norway
| | - David A Ahlquist
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
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Klepp P, Tollisen A, Røseth A, Cvancarova Småstuen M, Andersen SN, Vatn M, Moum BA, Brackmann S. Real-life chromoendoscopy for dysplasia surveillance in ulcerative colitis. World J Gastroenterol 2018; 24:4069-4076. [PMID: 30254411 PMCID: PMC6148427 DOI: 10.3748/wjg.v24.i35.4069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/06/2018] [Accepted: 08/24/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the use of chromoendoscopy for surveillance of ulcerative colitis in a real-life community hospital setting.
METHODS Patients with extensive ulcerative colitis, having disease duration of more than 8 years and who presented between the years of 1999 to 2013, were offered enrolment in this single cohort prospective study. All participants underwent standard bowel preparation with sodium phosphate and chromoendoscopy. Two expert endoscopists, novice to chromoendoscopy, evaluated each segment of the colon with standard-definition colonoscopes after spray application of 0.4% indigo carmine. All observed lesions were recorded and evaluated before being removed and/or biopsied. In addition, nontargeted biopsies were taken from each segment of the colon. The dysplasia detection rate and dysplasia detection yield were ascertained.
RESULTS A total of 21 neoplastic lesions (2 carcinomas, 4 of high-grade dysplasia and 15 of low-grade dysplasia) and 27 nondysplastic lesions were detected in 16 of the total 67 patients (70% male; median disease duration: 17 years; median age at diagnosis: 25 years; 92% aminosalicylate-treated). The dysplasia detection rate was 10.5% (7/67 patients). The dysplasia detection yield was 20.8% (10/48) for targeted biopsies and 3.5% (11/318) for nontargeted biopsies. The sensitivity and specificity for the macroscopic evaluation of neoplasia using chromoendoscopy were 48% [95% confidence interval (CI): 26%-70%] and 96% (95%CI: 93%-98%), respectively. The positive predictive and negative predictive values were 42% (95%CI: 27%-59%) and 97% (95%CI: 95%-98%), respectively. A total of 19/21 dysplastic lesions were detected in mucosa with histologic inflammation.
CONCLUSION Chromoendoscopy seems to be of value for dysplasia surveillance of ulcerative colitis in a community hospital setting. The yield of non-targeted biopsies is negligible.
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Affiliation(s)
- Pasquale Klepp
- Unger-Vetlesen Institute, Department of Internal Medicine, Lovisenberg Diaconal Hospital, Oslo 0456, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo 0317, Norway
| | - Anita Tollisen
- Unger-Vetlesen Institute, Department of Internal Medicine, Lovisenberg Diaconal Hospital, Oslo 0456, Norway
| | - Arne Røseth
- Unger-Vetlesen Institute, Department of Internal Medicine, Lovisenberg Diaconal Hospital, Oslo 0456, Norway
| | | | - Solveig N Andersen
- Department of Pathology, Akershus University Hospital, Lørenskog 1474, Norway
| | - Morten Vatn
- Institute of Clinical Medicine, University of Oslo, Oslo 0317, Norway
| | - Bjørn A Moum
- Institute of Clinical Medicine, University of Oslo, Oslo 0317, Norway
- Department of Gastroenterology, Oslo University Hospital, Oslo 0450, Norway
| | - Stephan Brackmann
- Institute of Clinical Medicine, University of Oslo, Oslo 0317, Norway
- Department of Gastroenterology, Akershus University Hospital, Lørenskog 1474, Norway
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Klepp P, Kisiel JB, Småstuen MC, Røseth A, Andersen SN, Vatn MH, Ahlquist DA, Moum BA, Brackmann S. Multi-target stool DNA test in the surveillance of inflammatory bowel disease: a cross-sectional cohort study. Scand J Gastroenterol 2018; 53:273-278. [PMID: 29313389 DOI: 10.1080/00365521.2018.1424935] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND AIM Colonoscopic surveillance is recommended in patients with longstanding inflammatory bowel disease (IBD) as they are at increased risk of colorectal cancer (CRC). Non-invasive surveillance may improve compliance and access. Multi-target stool DNA (MT-sDNA) has been validated for screening of sporadic CRC but has not been assessed in IBD. Our aim was to assess the performance of a MT-sDNA test in a real-life surveillance setting of patients with longstanding IBD. MATERIAL AND METHODS A total of 192 IBD patients enrolled from two prospective cohorts submitted an EDTA buffered stool sample and underwent chromo- or white light colonoscopy. Stools were assayed for methylated BMP3 & NDRG4, mutant KRAS and β-actin by a laboratory blinded to clinical data. RESULTS The multitarget-sDNA panel was positive in 2/2 CRC and 5/15 low-grade dysplasia (LGD) < 1 cm in diameter. Sensitivities were 100% (95% CI 16-100%) for CRC and 33% (95% CI 13-61%) for LGD lesions <1 cm, with specificities of 87% (95% CI 81-91%) and 93% (95% CI 88-96%), respectively. The estimated number of patients needed to screen to detect a single CRC was 96 (95% CI 93-99%) and was 28 (95% CI 22-34%) to detect any colorectal neoplasia (CRN). CONCLUSION The MT-sDNA panel detected CRC in IBD. Sensitivity for sub-centimeter colorectal neoplasms in IBD patients appears similar to that observed in the general population. The test may be a valuable tool for detection of malignancy during structured surveillance of long-term IBD in a first line hospital setting.
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Affiliation(s)
- Pasquale Klepp
- a Department of Internal Medicine, Unger-Vetlesen Institute , Lovisenberg Diaconal Hospital , Oslo , Norway.,b Institute of Clinical Medicine , University of Oslo , Oslo , Norway
| | - John B Kisiel
- c Division of Gastroenterology and Hepatology , Mayo Clinic , Rochester , MN , USA
| | - Milada Cvancarova Småstuen
- b Institute of Clinical Medicine , University of Oslo , Oslo , Norway.,d Department of Gastroenterology , Oslo University Hospital , Oslo , Norway
| | - Arne Røseth
- e Department of Internal Medicine , Lovisenberg Diaconal Hospital , Oslo , Norway
| | - Solveig N Andersen
- f Department of Pathology , Akershus University Hospital , Lørenskog , Norway
| | - Morten H Vatn
- b Institute of Clinical Medicine , University of Oslo , Oslo , Norway
| | - David A Ahlquist
- c Division of Gastroenterology and Hepatology , Mayo Clinic , Rochester , MN , USA
| | - Bjørn A Moum
- b Institute of Clinical Medicine , University of Oslo , Oslo , Norway.,d Department of Gastroenterology , Oslo University Hospital , Oslo , Norway
| | - Stephan Brackmann
- b Institute of Clinical Medicine , University of Oslo , Oslo , Norway.,g Department of Gastroenterology , Akershus University Hospital , Lørenskog , Norway
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Kristensen V, Klepp P, Cvancarova M, Røseth A, Skar V, Moum B. Prediction of endoscopic disease activity in ulcerative colitis by two different assays for fecal calprotectin. J Crohns Colitis 2015; 9:164-9. [PMID: 25518057 DOI: 10.1093/ecco-jcc/jju015] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS As mucosal healing is the goal of treatment in inflammatory bowel disease, defining a fecal [f-] calprotectin cut-off level for mucosal healing is crucial. Previous studies have presented different cut-off levels. The aim of this study was to investigate the ability of two f-calprotectin assays to differentiate mucosal healing from inflammation in ulcerative colitis. METHODS Sixty-two patients with ulcerative colitis underwent colonoscopy for classification of mucosal inflammation [Mayo endoscopic subscore]. The patients also submitted a fecal sample for f-calprotectin analysis using two different assays, Calpro ELISA and Buhlmann ELISA. RESULTS The two assays correlated significantly, with a Spearman rank correlation coefficient of 0.86. Both assays showed significantly different f-calprotectin levels in patients with a Mayo endoscopic subscore of 0 [mucosal healing] and 1–3 [inflamed mucosa] [p <0.001]. Using ROC curve analyses, we selected the best cut-off levels for both assays with responding sensitivity and specificity [presented with 95% confidence intervals]; Calpro ELISA cut-off 61 μg/g, sensitivity 84.1% [75.0–93.2%], specificity 83.3 % [74.0–92.6%], and Buhlmann ELISA cut-off 96 μg/g, sensitivity 90.9 % [83.7–98.1%], specificity 83.3 % [74.0–92.6%]. Defining mucosal healing as a Mayo endoscopic subscore ≤1, cut-off levels increased: Calpro ELISA cut-off 110 μg/g, sensitivity 80.0%[70–90%], specificity 66.6 % [54.9–78.3%]; and Buhlmann ELISA cut-off 259 μg/g, sensitivity 83.3 %[74–92.6%], specificity 71.9 % [60.7–83.1%]. CONCLUSIONS The study demonstrates the need for assay specific cut-off levels in clinical practice,as the f-calprotectin cut-off level for endoscopic disease activity differed in these two assays.
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Brackmann S, Pretorius M, Klepp P, Clausen OPF, Andersen SN, Vatn MH, Lothe R, Lind GE, Danielsen HE. The distribution of chromosomal and microsatellite instability in colorectal cancers related to inflammatory bowel disease. J Clin Oncol 2013. [DOI: 10.1200/jco.2013.31.15_suppl.3607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
3607 Background: Surveillance for colorectal cancer (CRC) in inflammatory bowel disease (IBD) has so far not been effective. Mucosal or fecal biomarkers may be useful in the selection of high risk patients. The yield may depend on the underlying carcinogenic pathway. In IBD associated CRC (IBD-CRC) the distribution of chromosomal instability (CIN) and microsatellite instability (MSI) is not well documented. Our objective was to determine the distribution of CIN and MSI and the association to clinico-histological factors in a cohort of patients with IBD-CRC. Methods: Ploidy was measured by high-resolution image cytometry and MSI by using two markers (BAT 25 and BAT26) in 62 patients with 72 CRC-IBD selected by matching the Norwegian Cancer Registry with IBD cohorts of three university hospitals in Oslo. The association between ploidy/MSI status and clinicohistological factors were analyzed by non-parametric tests. Results: Ploidy status was analyzed in 67 (93%), microsatellite stability in 68 (94%) tumors. Fourty-nine (73.1%) were non-diploid (43 aneuploid, 1 polyploid, 5 tetraploid), 13 (19.4 %) diploid, five (7.5%) indeterminate. Forty-three (63.2%) were microsatellite stable (MSS), four (5.8%) microsatellite instable (MSI). One tumor was MSI in BAT25 but MSS in BAT26. Twenty (29.5%) tumors showed no PCR-product in at least one of the markers. In 46 tumors, both ploidy and MSI status were available. All non-diploid tumours (36, 78.3%) were MSS and all MSI tumors (4, 8.7%) were diploid. Six (13%) tumors were diploid and MSS. Four patients were treated with 5-ASA prior to diagnosis of CRC. Three developed diploid, one aneuploid cancers. Of the untreated patients, 31 developed aneuploid, 7 diploid cancers (p=0.036). We did not find an association between age, gender, type of IBD, duration of IBD, localisation of CRC,TNM-stage and CIN or MSI. Conclusions: The majority of CRC-IBD in our cohort seem to present CIN and only a minority MSI. Some CRC-IBD patients present neither CIN nor MSI. Future studies should determine whether these display the CpG island methylator phenotype. Biomarkers for CRC-IBD should be derived from all three pathways.
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Affiliation(s)
| | - Maria Pretorius
- Institute for Medical Informatics, The Norwegian Radiumhospital, Oslo University Hospital, Oslo, Norway
| | | | - Ole Petter Fraas Clausen
- Department of Pathology, Division of Diagnostics and Intervention, Oslo University Hospital, Oslo, Norway
| | | | - Morten H Vatn
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Ahus Campus, Nordbyhagen, Norway
| | - Ragnhild Lothe
- Department of Cancer Prevention; Institute for Cancer Research; Oslo University Hospital, The Norwegian Radiumhospital, Oslo, Norway
| | - Guro E Lind
- Department of Cancer Prevention; Institute for Cancer Research; Oslo University Hospital, The Norwegian Radiumhospital, Oslo, Norway
| | - Haavard E Danielsen
- Institute for Medical Informatics,The Norwegian Radiumhospital, Oslo University Hospital, Oslo, Norway
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Svensson LG, Klepp P, Hinder RA. Spinal cord anatomy of the baboon--comparison with man and implications for spinal cord blood flow during thoracic aortic cross-clamping. S AFR J SURG 1986; 24:32-4. [PMID: 3704827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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