0000000000004100

AUTHOR

Silvia Barbaliscia

showing 5 related works from this author

Resistance test guided retreatment of HCV infected patients with a previous failure to a NS5A inhibitor-containing regimen: the Italian Vironet C rea…

2019

Previous article in issueNext article in issue Introduction: There is a limited documentation about the retreatment of patients failing a recommended NS5A-containing regimen in Italy. Materials & methods: Within the VIRONET-C network, 386 NS5A-failing patients infected with different HCV-genotypes (GT) (GT1a/1b/2a-c/3a-b-g-h/4a-d-n-o-v=93/124/19/112/38) were analyzed. Retreatment of 105 failures was investigated. HCV-resistance-test was performed by Sanger-sequencing. Results: Failures following seven different NS5A-containing regimens were studied: 3D/2D (paritaprevir/ombitasvir ± dasabuvir) ± ribavirin (N = 72/4), daclatasvir/ledipasvir/velpatasvir + sofosbuvir ± ribavirin (N = 105/13…

Resistance testmedicine.medical_specialtyHepatologybusiness.industryGastroenterologyDAA failurVironet C.NS5ARegimenInternal medicinemedicineretreatmentNS5AbusinessDigestive and Liver Disease
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Failure on voxilaprevir, velpatasvir, sofosbuvir and efficacy of rescue therapy

2021

Background & Aims There are limited data on patients with chronic HCV infection in whom combination voxilaprevir (VOX), velpatasvir (VEL), sofosbuvir (SOF) retreatment fails. Thus, we aimed to assess treatment failure and rescue treatment options in these patients. Methods Samples from 40 patients with HCV genotypes (GT) 1-4 in whom VOX/VEL/SOF retreatment failed were collected within the European Resistance Study Group. Population-based resistance analyses were conducted and clinical parameters and retreatment efficacies were evaluated retrospectively in 22 patients. Results Most VOX/VEL/SOF failure patients were infected with HCV GT3a (n = 18, 45%) or GT1a (n = 11, 28%) and had cirrhosis …

0301 basic medicineHepatitis C Virusmedicine.medical_specialtySofosbuvirVoxilaprevirPopulationresistance-associated substitutionsDirect-acting antiviralVoxilaprevir/velpatasvir/sofosbuvir.GastroenterologySettore MED/07Telaprevir03 medical and health scienceschemistry.chemical_compound0302 clinical medicineVoxilaprevir/Velpatasvir/SofosbuvirInternal medicineBoceprevirRescue therapymedicineResistance-associated substitutioneducationdirect-acting antiviralsDAAeducation.field_of_studyHepatologybusiness.industryvirus diseasesGlecaprevirDAA; HCV; Hepatitis C Virus; Voxilaprevir/Velpatasvir/Sofosbuvir; direct-acting antivirals; rescue therapy; resistance-associated substitutionsdigestive system diseasesPibrentasvirRegimen030104 developmental biologychemistryHCV030211 gastroenterology & hepatologyHepatitis C virubusinessmedicine.drugJournal of Hepatology
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Frequent NS5A and multiclass resistance in almost all HCV genotypes at DAA failures: What are the chances for second-line regimens?

2017

0301 basic medicinemedicine.medical_specialtyhepacivirusHCV RASTreatment outcomeDrug ResistanceHCV genotypesDrug resistanceBiologyNS5A03 medical and health sciences0302 clinical medicineSecond linedrug resistance viral; humans; retreatment; treatment outcome; antiviral agents; hepacivirus; hepatitis c chronicInternal medicineDrug Resistance Viral; Humans; Retreatment; Treatment Outcome; Antiviral Agents; Hepacivirus; Hepatitis C ChronicDrug Resistance Viralantiviral agentsmedicineViralChronicNS5AhumansHepatologyhepatitis c chronicHepatitis CHepatitis C ChronicSettore MED/07 - Microbiologia e Microbiologia Clinicamedicine.diseaseHepatitis CVirologyHepatology HCV NS5A030104 developmental biologyHCVtreatment outcome030211 gastroenterology & hepatologyretreatmentdrug resistance viral
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NS5A gene analysis by next generation sequencing in HCV nosocomial transmission clusters of HCV genotype 1b infected patients

2019

Background: The aim of the study was to investigate the intra-host variability through next-generation-sequencing (NGS) of the NS5A-gene in nosocomial transmission-clusters observed in two Italian hospitals among hepatitis C virus (HCV)-genotype-1b infected patients. Methods: HCV-sequencing was performed by Sanger-sequencing (NS3 + NS5A + NS5B) and by NGS (NS5A, MiSeq-Illumina) in 15 HCV-1b infected patients [five acute with onco-hematologic-disease and 10 (4/6 acute/chronic) with &beta

Male0301 basic medicinevirusesDrug ResistanceHepacivirusViral Nonstructural Proteinsmedicine.disease_causeSettore MED/42 - Igiene Generale E ApplicataGastroenterologySettore MED/07chemistry.chemical_compound0302 clinical medicineGenotype 1bMedicineVirallcsh:QH301-705.5PhylogenyCross Infectionnosocomial transmissionGastroenterologyHigh-Throughput Nucleotide Sequencingvirus diseasesHCV; NGS; acute infection; chronic infection; nosocomial transmission; sequencing; Acute Disease; Adult; Amino Acid Substitution; Antiviral Agents; Blood Transfusion; Chronic Disease; Cross Infection; Drug Resistance Viral; Female; Genotype; Hepacivirus; Hepatitis C; High-Throughput Nucleotide Sequencing; Host-Pathogen Interactions; Humans; Interferons; Male; Middle Aged; Phylogeny; Polymorphism Single Nucleotide; Viral Nonstructural Proteins; beta-ThalassemiaSingle NucleotideGeneral MedicinesequencingMiddle AgedHepatitis CNGSAcute DiseaseHost-Pathogen InteractionsHCVFemale030211 gastroenterology & hepatologyAdultmedicine.medical_specialtyGenotypeHepatitis C virusViral quasispeciesPolymorphism Single NucleotideAntiviral AgentsArticleDNA sequencing03 medical and health sciencesInternal medicineDrug Resistance ViralHumansBlood TransfusionPolymorphismNS5ANS5BGeneHepatologybusiness.industryNosocomial transmissionbeta-Thalassemiabiochemical phenomena metabolism and nutritionchronic infectionVirologydigestive system diseasesChronic infection030104 developmental biologyAmino Acid Substitutionchemistrylcsh:Biology (General)Chronic DiseaseHCV; NGS; acute infection; chronic infection; nosocomial transmission; sequencingInterferonsbusinessacute infectionDigestive and Liver Disease
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Multiclass HCV resistance to direct-acting antiviral failure in real-life patients advocates for tailored second-line therapies

2017

Background & Aims: Despite the excellent efficacy of direct-acting antivirals (DAA) reported in clinical trials, virological failures can occur, often associated with the development of resistance-associated substitutions (RASs). This study aimed to characterize the presence of clinically relevant RASs to all classes in real-life DAA failures. Methods: Of the 200 virological failures that were analyzed in 197 DAA-treated patients, 89 with pegylated-interferon+ribavirin (PegIFN+RBV) and 111 without (HCV-1a/1b/1g/2/3/4=58/83/1/6/24/25; 56.8% treatment experienced; 65.5% cirrhotic) were observed. Sanger sequencing of NS3/NS5A/NS5B was performed by home-made protocols, at failure (N= 200) and w…

Male0301 basic medicinehepatitis C virusSustained Virologic ResponseSofosbuvirHepacivirusDrug ResistanceHepacivirusresistance-associated substitutionsViral Nonstructural ProteinsVARIANTSNS5Amedicine.disease_causeGastroenterologychemistry.chemical_compound0302 clinical medicineRecurrenceINFECTIONantiviral therapyMedicinehepatitis C viruViralTreatment FailureChronicantiviral therapy; direct-acting antivirals; hepatitis C virus; resistance test; resistance-associated substitutions; hepatologybiologyGENOTYPE 1virus diseasesMiddle Agedantiviral therapy; direct-acting antivirals; hepatitis C virus; resistance test; resistance-associated substitutionsSettore MED/07 - Microbiologia e Microbiologia ClinicaHepatitis CItalyCombinationInterferonDrug Therapy CombinationFemale030211 gastroenterology & hepatologyAuthor Keywords:antiviral therapyRIBAVIRINSequence AnalysisHumanmedicine.drugmedicine.medical_specialtyDaclatasvirGenotypeHepatitis C virusAntiviral AgentsLONG-TERM PERSISTENCEDACLATASVIR03 medical and health sciencesDrug Therapyantiviral therapy; direct-acting antivirals; hepatitis C virus; resistance test; resistance-associated substitutions; Aged; Antiviral Agents; Drug Resistance Viral; Drug Therapy Combination; Female; Genotype; Hepacivirus; Hepatitis C Chronic; Humans; Interferons; Italy; Male; Middle Aged; Mutation; Recurrence; Ribavirin; Sequence Analysis DNA; Sofosbuvir; Sustained Virologic Response; Treatment Failure; Viral Nonstructural Proteins; HepatologyTREATMENT-NAIVEInternal medicineDrug Resistance ViralRibavirinHumansNS5Aresistance testdirect-acting antiviralsAgedAntiviral Agentresistance-associated substitutiondirect-acting antiviralHepaciviruHepatologyresistance test KeyWords Plus:HEPATITIS-C VIRUSbusiness.industryRibavirinViral Nonstructural ProteinSequence Analysis DNADNAHepatitis C ChronicHepatologybiology.organism_classificationClinical trial030104 developmental biologySOFOSBUVIRchemistrySequence AnalysihepatologyMutationImmunologyInterferonsSofosbuvirbusiness
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