0000000001319083

AUTHOR

Elizabeth Alwers

showing 4 related works from this author

<i>BRAF</i> Mutation Testing in Lynch Syndrome Diagnostics: Performance and Efficiency According to Patient's Age

2019

Background: BRAF V600E mutations are reportedly associated with sporadic microsatellite-unstable (MSI) colorectal cancer (CRC), while rarely detected in CRCs of Lynch syndrome (LS) patients. Therefore, current international diagnostic guidelines recommend somatic BRAF mutation testing in MLH1-deficient MSI CRC patients to exclude LS. As sporadic BRAF- mutant MSI CRC is a disease of the elderly, while LS-associated CRC usually occurs at younger age, we hypothesized that the efficacy of BRAF testing in LS diagnostics may be age-dependent. Methods: We systematically compared the prevalence of BRAF mutations in LS-associated CRCs and MSI CRCs from population-based cohorts in different age group…

Oncologymedicine.medical_specialtyeducation.field_of_studyColorectal cancerbusiness.industryGenetic counselingPopulationCancerMicrosatellite instabilityDiseasemedicine.diseasedigestive system diseasesLynch syndromeInternal medicinemedicineMutation testingeducationbusinessneoplasmsSSRN Electronic Journal
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Colonoscopy and reduction of colorectal cancer risk by molecular tumor subtypes: a population-based case-control study

2020

AbstractObjectiveIn previous studies, the protective effect of colonoscopy was generally stronger for distal than for proximal colorectal cancer (CRC). This study aimed to investigate whether the association of colonoscopy and CRC risk varies according to major molecular pathological features and pathways of CRC.DesignPopulation-based case-control study from Germany, including 2132 patients with a first diagnosis of CRC and information on major molecular tumor markers, and 2486 control participants without CRC. Detailed participant characteristics were collected by standardized questionnaires and information on previous colonoscopy was derived from medical records. Polytomous logistic regre…

AdenomaMaleProto-Oncogene Proteins B-rafOncologymedicine.medical_specialtyColorectal cancerPopulationRectumColonoscopymedicine.disease_cause03 medical and health sciences0302 clinical medicineGermanyInternal medicineBiomarkers TumormedicineHumanseducationneoplasmsAgedAged 80 and overeducation.field_of_studyHepatologyCpG Island Methylator Phenotypemedicine.diagnostic_testbusiness.industryGastroenterologyCase-control studyCancerColonoscopyOdds ratioDNA MethylationMiddle Agedmedicine.diseaseConfidence intervaldigestive system diseasesmedicine.anatomical_structureCase-Control Studies030220 oncology & carcinogenesisMutationCpG IslandsFemaleMicrosatellite Instability030211 gastroenterology & hepatologyObservational studyKRASColorectal Neoplasmsbusiness
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Genome-wide DNA methylation differences according to oestrogen receptor beta status in colorectal cancer.

2019

Involvement of sex hormones in colorectal cancer (CRC) development has been linked to oestrogen receptor β (ERβ). Expression of ERβ is found reduced in tumour tissue and inversely related to mortality. However, mechanisms are not well understood. Our study aimed to detect differentially methylated genes associated with ERβ expression, which could point to mechanisms by which ERβ could influence risk and prognosis of CRC. Epigenome-wide DNA methylation profiling was performed using Illumina HumanMethylation450k BeadChip arrays in two independent tumour sample sets of CRC patients recruited in 2003–2010 by the German DACHS study (discovery cohort n = 917, replication cohort n = 907). ERβ expr…

0301 basic medicineAdultMaleCancer ResearchColorectal cancerBiologyGenomeEpigenesis Genetic03 medical and health sciencesTumour tissue0302 clinical medicinemedicineBiomarkers TumorEstrogen Receptor betaHumansEpigeneticsOestrogen receptorBeta (finance)Promoter Regions GeneticMolecular BiologyAgedAged 80 and overDNA MethylationMiddle Agedmedicine.diseasePrognosisGene Expression Regulation NeoplasticSurvival Rate030104 developmental biology030220 oncology & carcinogenesisCase-Control StudiesDNA methylationCancer researchFemaleColorectal NeoplasmsHormoneFollow-Up StudiesGenome-Wide Association StudyResearch PaperEpigenetics
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Genome-wide DNA methylation differences according to oestrogen receptor beta status in colorectal cancer

2019

Involvement of sex hormones in colorectal cancer (CRC) development has been linked to oestrogen receptor β (ERβ). Expression of ERβ is found reduced in tumour tissue and inversely related to mortality. However, mechanisms are not well understood. Our study aimed to detect differentially methylated genes associated with ERβ expression, which could point to mechanisms by which ERβ could influence risk and prognosis of CRC. Epigenome-wide DNA methylation profiling was performed using Illumina HumanMethylation450k BeadChip arrays in two independent tumour sample sets of CRC patients recruited in 2003–2010 by the German DACHS study (discovery cohort n = 917, replication cohort n = 907). ERβ expr…

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