4.1 Article

Performance comparison of three BRAF V600E detection methods in malignant melanoma and colorectal cancer specimens

Journal

TUMOR BIOLOGY
Volume 36, Issue 2, Pages 1003-1013

Publisher

SPRINGER
DOI: 10.1007/s13277-014-2711-5

Keywords

BRAF mutations; Detection methods; Immunohistochemistry; Colorectal cancer; Malignant melanoma

Categories

Funding

  1. University of Bergen
  2. Norwegian Cancer society
  3. Western Norway Regional Health Authority
  4. Bergen Medical Research Foundation

Ask authors/readers for more resources

Personalized cancer care requires reliable biomarkers. While the BRAF V600E mutation is implemented in the clinic, no method for its detection has so far been established as reference. We aimed to perform a comprehensive comparison of three methods currently being used for V600E detection in clinical samples. We analysed genomic DNA from 127 malignant melanomas (77 patients) and 389 tumours from 141 colorectal cancer patients (383 liver metastases and 6 primary tumours) by Sanger sequencing and a single probe-based high-resolution melting assay (LightMix). Formalin-fixed paraffin-embedded (FFPE) tissue from a subset of these lesions (n = 77 and 304, respectively) was analysed by immunohistochemistry (IHC) using the V600E-specific antibody VE1. In a dilution series of V600E-mutated DNA in wild-type DNA, the detection limit for the LightMix assay was 1:1000 mutated alleles while it was 1:10 for Sanger sequencing. In line with this, we detected 15 additional mutated melanoma samples and two additional mutated metastatic colorectal cancer samples by the LightMix assay compared to Sanger sequencing. For the melanoma samples, we observed high concordance between DNA-based methods and analysis by IHC. However, in colorectal samples, IHC performed poorly with 12 samples being scored as V600E positive exclusively by IHC and nine samples being scored as V600E negative exclusively by IHC. In conclusion, the VE1 antibody is not recommendable for clinical tests of colorectal cancer samples. For melanoma samples, IHC may be useful as a screening tool guiding further analytical approaches.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.1
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Oncology

Golgi-Localized PAQR4 Mediates Antiapoptotic Ceramidase Activity in Breast Cancer

Line Pedersen, Pouda Panahandeh, Muntequa I. Siraji, Stian Knappskog, Per Eystein Lonning, Ruth Gordillo, Philipp E. Scherer, Anders Molven, Knut Teigen, Nils Halberg

CANCER RESEARCH (2020)

Article Multidisciplinary Sciences

The novel microRNAs hsa-miR-nov7 and hsa-miR-nov3 are over-expressed in locally advanced breast cancer

Deepak Poduval, Zuzana Sichmanova, Anne Hege Straume, Per Eystein Lonning, Stian Knappskog

PLOS ONE (2020)

Article Oncology

Assessment of tumor suppressor promoter methylation in healthy individuals

Deepak B. Poduval, Elisabet Ognedal, Zuzana Sichmanova, Eivind Valen, Gjertrud T. Iversen, Laura Minsaas, Per E. Lonning, Stian Knappskog

CLINICAL EPIGENETICS (2020)

Article Microbiology

Detection of Human Cytomegalovirus Proteins in Paraffin-Embedded Breast Cancer Tissue Specimens-A Novel, Automated Immunohistochemical Staining Protocol

Joel Touma, Yan Liu, Afsar Rahbar, Mattia Russel Pantalone, Nerea Martin Almazan, Katja Vetvik, Cecilia Soderberg-Naucler, Jurgen Geisler, Torill Sauer

Summary: The study revealed a significant association between HCMV and human malignancies, specifically in breast cancer tumors, and emphasized the importance of automating diagnostic procedures to improve clinical value. The method developed for staining HCMV late antigen (LA) was shown to be highly sensitive and reproducible, making it useful for future diagnostics and scientific applications.

MICROORGANISMS (2021)

Article Oncology

Correlation between MRI morphological response patterns and histopathological tumor regression after neoadjuvant endocrine therapy in locally advanced breast cancer: a randomized phase II trial

Joana Reis, Owen Thomas, Maryam Lahooti, Marianne Lyngra, Hossein Schandiz, Joao Boavida, Kjell-Inge Gjesdal, Torill Sauer, Jurgen Geisler, Jonn Terje Geitung

Summary: In postmenopausal ER-positive/HER-2-negative LABC patients treated with neoadjuvant endocrine therapy, there is a correlation between MRI morphological response patterns and histopathological tumor regression grading. The type II MRI pattern was most common after 2 and 4 months of therapy, with histopathological regression grade 3 being the most common after 4 months. The correlation between MRI patterns and histopathology was moderate, with type IV showing the strongest correlation.

BREAST CANCER RESEARCH AND TREATMENT (2021)

Article Genetics & Heredity

Polymorphisms in the TP53-MDM2-MDM4-axis in patients with rheumatoid arthritis

B. Liv Gansmo, A. Benedicte Lie, Marthe T. Maehlen, Lars Vatten, Pal Romundstad, Kristian Hveem, Per E. Lonning, Stian Knappskog

Summary: The study found a potential association between the MDM2 del1518 variant and the risk of rheumatoid arthritis, as well as indications that combinational genotypes and haplotypes in the MDM2 locus may be related to rheumatoid arthritis.
Article Endocrinology & Metabolism

Simultaneous Quantification of Aromatase Inhibitors and Estrogens in Postmenopausal Breast Cancer Patients

Bjorn-Erik Bertelsen, Kristin Viste, Thomas Helland, Magnus Hagland, Havard Soiland, Jurgen Geisler, Tone Hoel Lende, Per Eystein Lonning, Jorn Sagen, Gunnar Mellgren, Bjorg Almas

Summary: This study developed a liquid chromatography-tandem mass spectrometry (MS/MS) method for simultaneous measurement of serum levels of third-generation aromatase inhibitors (AIs) and ultra-low levels of estrogens. The method is highly valuable for studying drug efficacy and compliance.

JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM (2022)

Article Multidisciplinary Sciences

Impact of the APOBEC3A/B deletion polymorphism on risk of ovarian cancer

Liv B. Gansmo, Nigar Sofiyeva, Merete Bjornslett, Pal Romundstad, Kristian Hveem, Lars Vatten, Anne Dorum, Per E. Lonning, Stian Knappskog

Summary: The germline deletion of APOBEC3A/B is associated with a reduced risk of ovarian cancer, particularly in non-serous and serous cases. Validation from an independent dataset shows similar trends, with a significant risk reduction observed in clear cell cancers.

SCIENTIFIC REPORTS (2021)

Article Oncology

APOBEC3A/B deletion polymorphism and endometrial cancer risk

Nigar Sofiyeva, Camilla Krakstad, Mari K. Halle, Tracy A. O'Mara, Pal Romundstad, Kristian Hveem, Lars Vatten, Per E. Lonning, Liv B. Gansmo, Stian Knappskog

Summary: The APOBEC3A/B deletion variant is associated with a decreased risk of endometrial cancer in Norwegian women.

CANCER MEDICINE (2023)

Article Virology

Human Cytomegalovirus Protein Expression Is Correlated with Shorter Overall Survival in Breast Cancer Patients: A Cohort Study

Joel Touma, Mattia Russel Pantalone, Afsar Rahbar, Yan Liu, Katja Vetvik, Torill Sauer, Cecilia Soderberg-Naucler, Juergen Geisler

Summary: The objective of this study was to identify novel risk and prognostic factors associated with breast cancer for improved treatment and increased survival rates. The results showed that patients with HCMV-positive tumors had a poorer prognosis, suggesting a link between HCMV infection and breast cancer prognosis, and indicating potential for novel clinical intervention and targeted therapy.

VIRUSES-BASEL (2023)

Article Oncology

Molecular and phenotypic characteristics influencing the degree of cytoreduction in high-grade serous ovarian carcinomas

Cecilie Fredvik Torkildsen, Liv Cecilie Vestrheim Thomsen, Ragnar Kvie Sande, Camilla Krakstad, Ingunn Stefansson, Eva Karin Lamark, Stian Knappskog, Line Bjorge

Summary: In this study, phenotypic markers were combined with targeted DNA sequencing to discover novel biomarkers for guiding surgical management in high-grade serous ovarian carcinoma (HGSOC) patients. The study highlights the potential of a preoperative risk stratification model combining phenotypic traits and single-gene mutational status in predicting surgical outcomes.

CANCER MEDICINE (2023)

Article Endocrinology & Metabolism

An Ultrasensitive Routine LC-MS/MS Method for Estradiol and Estrone in the Clinically Relevant Sub-Picomolar Range

Bjorn-Erik Bertelsen, Ralf Kellmann, Kristin Viste, Anne Turid Bjornevik, Hans Petter Eikesdal, Per Eystein Lonning, Jorn Sagen, Bjorg Almas

JOURNAL OF THE ENDOCRINE SOCIETY (2020)

Meeting Abstract Oncology

Neoadjuvant endocrine therapy with palbociclib in patients with high-risk breast cancer

P. E. Lonning, C. Clausen, E. S. Blix, S. Lundgren, G. Vagstad, H. Espelid, B. Gilje, E. A. Janssen, J. Geisler, T. Aas, H. Aase, S. Knappskog, H. P. Eikesdal

ANNALS OF ONCOLOGY (2019)

Meeting Abstract Oncology

Neoadjuvant olaparib monotherapy in primary triple negative breast cancer

H. P. Eikesdal, S. Yndestad, E. S. Blix, S. Lundgren, G. Vagstad, H. Espelid, B. Gilje, E. A. Janssen, J. Geisler, T. Aas, H. Aase, S. Knappskog, P. E. Lonning

ANNALS OF ONCOLOGY (2019)

No Data Available