Blar i Bergen Open Research Archive på forfatter "Lea, Dordi"
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Assessment of clinically related outcomes and biomarker analysis for translational integration in colorectal cancer (ACROBATICC): study protocol for a population-based, consecutive cohort of surgically treated colorectal cancers and resected colorectal liver metastasis
Søreide, Kjetil; Watson, Martin M; Lea, Dordi; Nordgård, Oddmund; Søreide, Jon Arne; Hagland, Hanne R (Peer reviewed; Journal article, 2016-06-29)Background: More accurate predictive and prognostic biomarkers for patients with colorectal cancer (CRC) primaries or colorectal liver metastasis (CLM) are needed. Outside clinical trials, the translational integration of ... -
Clinical trials of neoadjuvant immune checkpoint inhibitors for early-stage operable colon and rectal cancer
Veen, Torhild; Kanani, Arezo; Lea, Dordi; Søreide, Kjetil (Journal article; Peer reviewed, 2023)Background: Immune checkpoint inhibitors (ICI) have become first-line treatment for metastatic colorectal cancer (CRC) with deficient mismatch repair (dMMR). Despite the remarkable response reported in preliminary trials, ... -
Digital Image Analysis of the Proliferation Markers Ki67 and Phosphohistone H3 in Gastroenteropancreatic Neuroendocrine Neoplasms: Accuracy of Grading Compared with Routine Manual Hot Spot Evaluation of the Ki67 Index
Lea, Dordi; Gudlaugsson, Einar G.; Skaland, Ivar; Lillesand, Melinda; Søreide, Kjetil; Søreide, Jon A. (Journal article; Peer reviewed, 2021)Gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) are rare epithelial neoplasms. Grading is based on mitotic activity or the percentage of Ki67-positive cells in a hot spot. Routine methods have poor intraobserver ... -
Elevated microsatellite alterations at selected tetranucleotides (EMAST) is not attributed to MSH3 loss in stage I-III colon cancer: An automated, digitalized assessment by immunohistochemistry of whole slides and hot spots
Watson, Martin M; Lea, Dordi; Hagland, Hanne Røland; Søreide, Kjetil (Peer reviewed; Journal article, 2019-12)INTRODUCTION: EMAST is a poorly understood form of microsatellite instability (MSI) in colorectal cancer (CRC) for which loss of MSH3 has been proposed as the underlying mechanism, based on experimental studies. We aimed ... -
Elevated microsatellite alterations at selected tetranucleotides in early-stage colorectal cancers with and without high-frequency microsatellite instability: same, same but different?
Watson, Martin M; Lea, Dordi; Rewcastle, Emma; Hagland, Hanne Røland; Søreide, Kjetil (Peer reviewed; Journal article, 2016-07)Microsatellite instability (MSI) is associated with better prognosis in colorectal cancer (CRC). Elevated microsatellite alterations at selected tetranucleotides (EMAST) is a less-understood form of MSI. Here, we aim to ... -
Histopathological Growth Pattern in Colorectal Liver Metastasis and The Tumor Immune Microenvironment
Zaharia, Claudia; Veen, Torhild; Lea, Dordi; Kanani, Arezo; Alexeeva, Marina; Søreide, Kjetil (Journal article; Peer reviewed, 2023)Almost half of all patients with colorectal cancer present with or eventually develop metastasis, most frequently in the liver. Understanding the histopathological growth patterns and tumor immune microenvironment of ... -
The overriding role of surgery and tumor grade for long-term survival in patients with gastroenteropancreatic neuroendocrine neoplasms: A population-based cohort study
Søreide, Jon Arne; Kvaløy, Jan Terje; Lea, Dordi; Sandvik, Oddvar M.; Al-Saiddi, Mohammed; Haslerud, Torjan M.; Garresori, Herish; Karlsen, Lars Normann; Gudlaugsson, Einar; Søreide, Kjetil (Journal article; Peer reviewed, 2021)Background Gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs) comprise a heterogeneous disease group. Factors that affect long-term survival remain uncertain. Complete population-representative cohorts with long-term ... -
Prevalence of PD‑L1 expression is associated with EMAST, density of peritumoral T‑cells and recurrence‑free survival in operable non‑metastatic colorectal cancer
Watson, Martin Matthew Christian; Lea, Dordi; Gudlaugsson, Einar; Skaland, Ivar; Hagland, Hanne Røland; Søreide, Kjetil (Journal article; Peer reviewed, 2020-04-20)Introduction Microsatellite instability (MSI) predict response to anti-PD1 immunotherapy in colorectal cancer (CRC). CRCs with MSI have higher infiltration of immune cells related to a better survival. Elevated Microsatellite ... -
A template to quantify the location and density of CD3 + and CD8 + tumor-infiltrating lymphocytes in colon cancer by digital pathology on whole slides for an objective, standardized immune score assessment
Lea, Dordi; Watson, Martin Matthew Christian; Skaland, Ivar; Hagland, Hanne Røland; Lillesand, Melinda; Gudlaugsson, Einar; Søreide, Kjetil (Journal article; Peer reviewed, 2021)Background: In colon cancer, the location and density of tumor-infiltrating lymphocytes (TILs) can classify patients into low and high-risk groups for prognostication. While a commercially available ‘Immunoscore®’ exists, ... -
Use of quantitative pathology to improve grading and predict prognosis in tumours of the gastrointestinal tract
Lea, Dordi (Doctoral thesis, 2022-01-14)Cancer represents a formidable health burden and was the second leading cause of death globally in 2018. In Norway, almost 35000 new cancer cases were reported in 2019. For colon cancer, the incidence and mortality rates ...