0000000000163480

AUTHOR

Janett Fischer

showing 9 related works from this author

Genetic variation in the TLL1 gene is not associated with fibrosis in patients with metabolic associated fatty liver disease.

2020

Metabolic associated fatty liver disease (MAFLD) is the most prevalent liver disease in Western nations, with high heritability. A recent study of Japanese patients with the disease suggested that TLL1 rs17047200 is associated with fibrosis; whether a similar association is observed in Caucasian patients with MAFLD is unknown. We investigated the association of the TLL1 rs17047200 polymorphism with liver fibrosis in a cohort of Caucasian patients with MAFLD (n = 728). We also investigated whether TLL1 expression is altered during liver injury in humans, in murine models of fibrosis, and in in-vitro. While TLL1 expression is upregulated in the liver of humans with MAFLD and in mice, the rs17…

Liver CirrhosisMaleSteatosisGene ExpressionDiseasePathology and Laboratory MedicineInbred C57BLGastroenterologyPathogenesisCytopathologyCohort StudiesLiver diseaseMice0302 clinical medicineFibrosisMedicine and Health SciencesLiver injury0303 health sciencesMultidisciplinaryLiver DiseasesQFatty liverRTLL1Single NucleotideMiddle Aged3. Good healthUp-RegulationAdult; Animals; Cohort Studies; Fatty Liver; Female; Genetic Variation; Humans; Liver Cirrhosis; Male; Mice; Mice Inbred C57BL; Middle Aged; Tolloid-Like Metalloproteinases; Up-Regulation; Polymorphism Single NucleotideMedicineLiver Fibrosis030211 gastroenterology & hepatologyFemaleAnatomyResearch ArticleAdultmedicine.medical_specialtyHistologyTolloid-Like MetalloproteinasesSettore MED/12 - GASTROENTEROLOGIAScienceGastroenterology and HepatologyPolymorphism Single Nucleotide03 medical and health sciencesInternal medicinemedicineGeneticsAnimalsHumansPolymorphism030304 developmental biologyNutritionbusiness.industryAdult Animals Cohort Studies Fatty Liver Female Genetic Variation Humans Liver Cirrhosis Male Mice Mice Inbred C57BL Middle Aged Tolloid-Like Metalloproteinases Up-Regulation Polymorphism Single NucleotideBiology and Life SciencesGenetic Variationmedicine.diseaseFibrosisDietFatty LiverMice Inbred C57BLn/aAnatomical PathologySteatosisbusinessDevelopmental Biology
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Heterozygous carriage of the alpha1-antitrypsin Pi*Z variant increases the risk to develop liver cirrhosis.

2018

ObjectiveHomozygous alpha1-antitrypsin (AAT) deficiency increases the risk for developing cirrhosis, whereas the relevance of heterozygous carriage remains unclear. Hence, we evaluated the impact of the two most relevant AAT variants (‘Pi*Z’ and ‘Pi*S’), present in up to 10% of Caucasians, on subjects with non-alcoholic fatty liver disease (NAFLD) or alcohol misuse.DesignWe analysed multicentric case–control cohorts consisting of 1184 people with biopsy-proven NAFLD and of 2462 people with chronic alcohol misuse, both cohorts comprising cases with cirrhosis and controls without cirrhosis. Genotyping for the Pi*Z and Pi*S variants was performed.ResultsThe Pi*Z variant presented in 13.8% of p…

0301 basic medicineMalemedicine.medical_specialtyHeterozygoteCirrhosisMedizinSingle-nucleotide polymorphismDiseaseGastroenterologyPolymorphism Single NucleotideRisk Assessment03 medical and health sciences0302 clinical medicineAge DistributionLiver Cirrhosis AlcoholicNon-alcoholic Fatty Liver DiseaseInternal medicineGermanymedicinePiConfidence IntervalsOdds RatioHumansGenetic Predisposition to DiseaseRisk factorSex DistributionGenotypingLiver injurybusiness.industryGenetic Carrier ScreeningIncidenceFatty liverBiopsy NeedleGastroenterologyGenetic Variationmedicine.diseasePrognosisImmunohistochemistry030104 developmental biologyAustriaCase-Control Studiesalpha 1-Antitrypsin030211 gastroenterology & hepatologyFemalebusinessGut
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Non-invasive stratification of hepatocellular carcinoma risk in non-alcoholic fatty liver using polygenic risk scores

2021

Background & Aims: Hepatocellular carcinoma (HCC) risk stratification in individuals with dysmetabolism is a major unmet need. Genetic predisposition contributes to non-alcoholic fatty liver disease (NAFLD). We aimed to exploit robust polygenic risk scores (PRS) that can be evaluated in the clinic to gain insight into the causal relationship between NAFLD and HCC, and to improve HCC risk stratification. Methods: We examined at-risk individuals (NAFLD cohort, n = 2,566; 226 with HCC; and a replication cohort of 427 German patients with NAFLD) and the general population (UK Biobank [UKBB] cohort, n = 364,048; 202 with HCC). Variants in PNPLA3-TM6SF2-GCKR-MBOAT7 were combined in a hepatic …

0301 basic medicineOncologyLiver CirrhosisMaleMultifactorial InheritanceCirrhosis0302 clinical medicineRisk FactorsNon-alcoholic Fatty Liver DiseaseHepatic fatAdiposityeducation.field_of_studyFatty liverLiver NeoplasmsMiddle AgedPrognosisEuropeCirrhosisLiverCohort030211 gastroenterology & hepatologyBiomarker; Cirrhosis; Genetics; Hepatic fat; Non-alcoholic fatty liver diseaseFemaleLiver cancerCohort studymedicine.medical_specialtyCarcinoma HepatocellularSettore MED/12 - GASTROENTEROLOGIAPopulationRisk Assessment03 medical and health sciencesBiomarker Cirrhosis Genetics Hepatic fat Non-alcoholic fatty liver disease Cross-Sectional Studies Europe Female Genetic Predisposition to Disease Humans Liver Liver Cirrhosis Male Mediation Analysis Middle Aged Multifactorial Inheritance Predictive Value of Tests Prognosis Risk Assessment Risk Factors Adiposity Carcinoma Hepatocellular Non-alcoholic Fatty Liver DiseaseGeneticPredictive Value of TestsInternal medicinemedicineGenetic predispositionGeneticsHumansGenetic Predisposition to DiseaseeducationCirrhosiMediation AnalysisHepatologybusiness.industryCarcinomaCase-control studyHepatocellularBiomarkermedicine.diseasedigestive system diseases030104 developmental biologyCross-Sectional StudiesbusinessJournal of Hepatology
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Mistranslation Drives Alterations in Protein Levels and the Effects of a Synonymous Variant at the Fibroblast Growth Factor 21 Locus.

2021

This article also appears in: Health, Medical, and Life Sciences Virtual Issue for Advanced Science.

FGF21General Chemical EngineeringGeneral Physics and AstronomyMedicine (miscellaneous)CODON USAGE BIAS02 engineering and technology01 natural sciencesGLUCOSEACTIVATIONPF-05231023ComputingMilieux_COMPUTERSANDEDUCATIONGeneral Materials SciencegeneticsCells CulturedINSULIN-RESISTANCEFull PaperFatty liverQGeneral Engineeringfibroblast growth factor 21 genetics metabolic metabolic associated fatty liver disease Cells Cultured Enzyme-Linked Immunosorbent Assay Fatty Liver Fibroblast Growth Factors Humans Inflammation LiverFull Papers021001 nanoscience & nanotechnologyPhenotype3. Good healthLiverOBESITY221 Nano-technology0210 nano-technologyReprogrammingEXPRESSIONmedicine.medical_specialtySettore MED/12 - GASTROENTEROLOGIAScienceEnzyme-Linked Immunosorbent Assayfibroblast growth factor 21Biology010402 general chemistryBiochemistry Genetics and Molecular Biology (miscellaneous)metabolic associated fatty liver diseaseInsulin resistancemetabolicInternal medicinemedicineHumansSecretionFGF21 RESISTANCEAlleleInflammationmedicine.disease0104 chemical sciencesFatty LiverFibroblast Growth FactorsEndocrinologyRNA SECONDARY STRUCTURETRANSLATIONHormoneAdvanced science (Weinheim, Baden-Wurttemberg, Germany)
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The membrane-bound O-acyltransferase domain-containing 7 variant rs641738 increases inflammation and fibrosis in chronic hepatitis B.

2017

Chronic hepatitis B (CHB) is characterized by hepatic inflammation that promotes progression to cirrhosis and predisposes to the development of hepatocellular carcinoma (HCC). Subtle interindividual genetic variation as well as viral and environmental factors interact to determine disease progression between individuals. Recently, the rs641738 membrane-bound O-acyltransferase domain-containing 7 (MBOAT7) polymorphism was demonstrated to influence histological liver damage in alcoholic liver disease, nonalcoholic fatty liver disease, and hepatitis C, but no data are available for CHB. We evaluated rs641738 influence on disease severity in a cohort of 1,101 patients with CHB. Forty-two patien…

0301 basic medicineLiver CirrhosisMaleAlcoholic liver diseaseCirrhosisSex FactorSeverity of Illness IndexCohort StudiesGene FrequencyFibrosisNon-alcoholic Fatty Liver DiseaseNonalcoholic fatty liver diseaseAge FactorProspective StudiesChronicMembrane ProteinMultivariate AnalysiAge FactorsHepatitis CSingle NucleotideMiddle AgedHepatitis BPrognosisHepatocellular carcinomaDisease ProgressionFemaleHumanAdultmedicine.medical_specialtyLogistic ModelPrognosiAcyltransferaseLiver CirrhosiAcetyltransferases; Acyltransferases; Adult; Age Factors; Cohort Studies; Confidence Intervals; Disease Progression; Female; Gene Frequency; Genetic Predisposition to Disease; Hepatitis B Chronic; Humans; Liver Cirrhosis; Logistic Models; Male; Membrane Proteins; Middle Aged; Multivariate Analysis; Non-alcoholic Fatty Liver Disease; Polymorphism Single Nucleotide; Prognosis; Prospective Studies; Risk Assessment; Severity of Illness Index; Sex FactorsPolymorphism Single NucleotideRisk Assessment03 medical and health sciencesHepatitis B ChronicSex FactorsSDG 3 - Good Health and Well-beingAcetyltransferasesInternal medicineAcetyltransferasemedicineConfidence IntervalsHumansGenetic Predisposition to DiseasePolymorphismHepatologybusiness.industryMembrane ProteinsHepatologymedicine.diseaseMinor allele frequencyProspective Studie030104 developmental biologyLogistic ModelsImmunologyMultivariate AnalysisCohort StudiebusinessConfidence IntervalAcyltransferasesHepatology (Baltimore, Md.)
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The GALAD Score as Potential Screening Test for Hepatocellular Carcinoma in Nonalcoholic Steatohepatitis: An International Multicenter Study

2019

The prevalence of nonalcoholic steatohepatitis (NASH) is rising rapidly and is currently the most common chronic liver disease in Western populations. Hepatocellular carcinoma (HCC) is a major complication of NASH and the current performance of screening approaches based on ultrasound shows limitations. To facilitate earlier diagnosis, this international multicenter study, with eight German and one Japanese center participating, tests the potential benefit of applying the biomarkers AFP, AFP-L3, DCP and related scores for HCC screening in NASH patients. In the retrospective German cohort, 126 NASH patients with newly diagnosed HCC and 231 NASH control patients without HCC were enrolled. In …

medicine.medical_specialtyeducation.field_of_studybusiness.industryPopulationInstitutional review boardmedicine.diseaseChronic liver diseasedigestive system diseasesHelsinki declarationMulticenter studyInternal medicineHepatocellular carcinomaCohortMedicineAFP-L3businesseducationneoplasmsSSRN Electronic Journal
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A STAT4 variant increases liver fibrosis risk in Caucasian patients with chronic hepatitis B

2018

Background Host genetic modifiers of the natural history of chronic hepatitis B (CHB) remain poorly understood. Recently, a genome-wide association study (GWAS)-identified polymorphism in the STAT4 gene that contributes to the risk for hepatocellular carcinoma (HCC) was shown to be associated with the full spectrum of hepatitis B virus (HBV) outcomes in Asian patients. However, the functional mechanisms for this effect are unknown and the role of the variant in modulating HBV disease in Caucasians has not been investigated. Aims To determine whether STAT4 genetic variation is associated with liver injury in Caucasian patients with CHB and to investigate potential mechanisms mediating this e…

musculoskeletal diseases0301 basic medicinemedicine.medical_specialtyGenome-wide association studymedicine.disease_cause03 medical and health sciences0302 clinical medicineSDG 3 - Good Health and Well-beingimmune system diseasesInternal medicinemedicineGenetic predispositionPharmacology (medical)skin and connective tissue diseasesHepatitis B virusHepatologybusiness.industryGastroenterologyhemic and immune systemsHepatologyHepatitis Bmedicine.disease030104 developmental biologyHepatocellular carcinomaImmunologyInterleukin 12030211 gastroenterology & hepatologyViral hepatitisbusinessAlimentary Pharmacology & Therapeutics
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Genetic Variation in HSD17B13 Reduces the Risk of Developing Cirrhosis and Hepatocellular Carcinoma in Alcohol Misusers.

2020

Background and aims Carriage of rs738409:G in patatin-like phospholipase domain containing 3 (PNPLA3) is associated with an increased risk for developing alcohol-related cirrhosis and hepatocellular carcinoma (HCC). Recently, rs72613567:TA in hydroxysteroid 17-beta dehydrogenase 13 (HSD17B13) was shown to be associated with a reduced risk for developing alcohol-related liver disease and to attenuate the risk associated with carriage of PNPLA3 rs738409:G. This study explores the risk associations between these two genetic variants and the development of alcohol-related cirrhosis and HCC. Approach and results Variants in HSD17B13 and PNPLA3 were genotyped in 6,171 participants, including 1,03…

0301 basic medicineMaleCirrhosis17-Hydroxysteroid DehydrogenasesVARIANTPROGRESSIONGastroenterologyCohort StudiesLiver disease0302 clinical medicineSNP RS738409G ALLELEDEPENDENCELiver Cirrhosis Alcoholic600 Technology610 Medicine & healthAged 80 and overeducation.field_of_studyFramingham Risk ScoreLiver NeoplasmsASSOCIATIONlipotoxicityMiddle AgedAlcoholism1101 Medical Biochemistry and Metabolomics1107 ImmunologyHepatocellular carcinomaadiponutrin030211 gastroenterology & hepatologyFemalecandidate genesLife Sciences & Biomedicinemedicine.medical_specialtyCarcinoma HepatocellularPopulation610 Medicine & healthLower riskRisk Assessment03 medical and health sciencesLIVER-DISEASEInternal medicinemedicinegenetic risk associationHumansAdiponutrineducationPNPLA3METAANALYSISAgedDISEASE-ASSOCIATED MORTALITYScience & TechnologyHepatologyGastroenterology & Hepatologybusiness.industryfibrosisGenetic Variation1103 Clinical SciencesOdds ratiomedicine.disease030104 developmental biologyhost geneticsbusinessgenetic susceptibility
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GALAD Score Detects Early Hepatocellular Carcinoma in an International Cohort of Patients With Nonalcoholic Steatohepatitis

2020

Background & Aims The prevalence of nonalcoholic steatohepatitis (NASH) associated hepatocellular carcinoma (HCC) is increasing. However, strategies for detection of early-stage HCC in patients with NASH have limitations. We assessed the ability of the GALAD score, which determines risk of HCC based on patient sex; age; and serum levels of α-fetoprotein (AFP), AFP isoform L3 (AFP-L3), and des-gamma-carboxy prothrombin (DCP), to detect HCC in patients with NASH. Methods We performed a case-control study of 125 patients with HCC (20% within Milan Criteria) and 231 patients without HCC (NASH controls) from 8 centers in Germany. We compared the performance of serum AFP, AFP-L3, or DCP vs GALAD …

medicine.medical_specialtyCirrhosisCarcinoma HepatocellularMedizinPilot ProjectsMilan criteriaGastroenterologySensitivity and SpecificityCohort Studies03 medical and health sciences0302 clinical medicineNon-alcoholic Fatty Liver DiseaseInternal medicinemedicineBiomarkers TumorHumansProtein PrecursorsneoplasmsHepatologyReceiver operating characteristicbusiness.industryLiver NeoplasmsGastroenterologyArea under the curvemedicine.diseasedigestive system diseasesROC Curve030220 oncology & carcinogenesisHepatocellular carcinomaCase-Control StudiesCohort030211 gastroenterology & hepatologyProthrombinalpha-FetoproteinsbusinessLiver cancerBiomarkersCohort study
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