2024
Efficacy and Safety of aficamten in Symptomatic Non-Obstructive Hypertrophic Cardiomyopathy: Results From the REDWOOD-HCM Trial, Cohort 4
Masri A, Sherrid M, Abraham T, Choudhury L, Garcia-Pavia P, Kramer C, Barriales-Villa R, Owens A, Rader F, Nagueh S, Olivotto I, Saberi S, Tower-Rader A, Wong T, Coats C, Watkins H, Fifer M, Solomon S, Heitner S, Jacoby D, Kupfer S, Malik F, Meng L, Sohn R, Wohltman A, Maron M, Investigators R. Efficacy and Safety of aficamten in Symptomatic Non-Obstructive Hypertrophic Cardiomyopathy: Results From the REDWOOD-HCM Trial, Cohort 4. Journal Of Cardiac Failure 2024 PMID: 38493832, DOI: 10.1016/j.cardfail.2024.02.020.Peer-Reviewed Original ResearchNonobstructive hypertrophic cardiomyopathyHypertrophic cardiomyopathyKansas City Cardiomyopathy Questionnaire Clinical Summary ScoreOpen-label phase 2 trialNew York Heart Association classHistory of aborted sudden cardiac deathNon-obstructive hypertrophic cardiomyopathyHigh-sensitivity cardiac troponin IAborted sudden cardiac deathBlood levels of biomarkersNT-proBNP levelsPhase 2 trialPlacebo-controlled studyHeart failure symptomsCardiac myosin inhibitorClinical summary scoreSudden cardiac deathClinically relevant improvementWeeks of washoutLevels of biomarkersCardiac troponin IHeart muscle cellsAsymptomatic reductionNT-proBNPAssociated with improvementsCharacteristics And Procedural Complications Of Septal Myectomy For Obstructive Hypertrophic Cardiomyopathy In The United States
Altibi A, Elman M, Zhao Y, Chehab J, Butzner M, Heitner S, Jacoby D, Sohn R, Masri A. Characteristics And Procedural Complications Of Septal Myectomy For Obstructive Hypertrophic Cardiomyopathy In The United States. Journal Of Cardiac Failure 2024, 30: 177-178. DOI: 10.1016/j.cardfail.2023.10.149.Peer-Reviewed Original ResearchObstructive hypertrophic cardiomyopathySeptal myectomyBaseline characteristicsHypertrophic cardiomyopathyInpatient complicationsConcomitant mitral valve repairVentricular septal defectMitral valve repairMitral valve replacementPredictor of inpatient complicationsCohort of patientsOutcomes of SMValve repairSeptal defectValve replacementAtrial fibrillation/flutterAnoxic brain damagePacemaker implantationAdult patientsHeart blockCardiac arrestEmergency intubationProcedural outcomesContinuous enrollmentMyectomyBaseline Characteristics of Patients in SEQUOIA-HCM: A Phase 3 Trial of Aficamten in Obstructive Hypertrophic Cardiomyopathy
Maron M, Abraham T, Coats C, Olivotto I, Lee M, Arad M, Cardim N, Ma C, Choudhury L, Düngen H, Garcia-Pavia P, Hagege A, Lewis G, Michels M, Oreziak A, Owens A, Tfelt-Hansen J, Veselka J, Watkins H, Heitner S, Jacoby D, Kupfer S, Malik F, Meng L, Wohltman A, Masri A. Baseline Characteristics of Patients in SEQUOIA-HCM: A Phase 3 Trial of Aficamten in Obstructive Hypertrophic Cardiomyopathy. Journal Of Cardiac Failure 2024, 30: s3. DOI: 10.1016/j.cardfail.2023.11.006.Peer-Reviewed Original ResearchLeft ventricular outflow tract obstructionObstructive hypertrophic cardiomyopathySymptomatic obstructive hypertrophic cardiomyopathyBaseline characteristics of patientsCardiac myosin inhibitorPhase 3 trialCharacteristics of patientsBaseline characteristicsHypertrophic cardiomyopathyNew York Heart Association functional classVentricular outflow tract obstructionN-terminal pro-B-type natriuretic peptidePro-B-type natriuretic peptideTreated with beta-blockersHigh-sensitivity cardiac troponin IBaseline New York Heart Association functional classOutflow tract obstructionPlacebo-controlled trialBaseline to weekHeart failure symptomsIndividual daily doseReduced exercise capacityCardiac troponin IMyocardial hypercontractilityOral placeboCardiovascular Hospitalizationspost Septal Myectomy For Obstructive Hypertrophic Cardiomyopathy: A 3-year Analysis Of 5,101 Patients
Altibi A, Elman M, Zhao Y, Chehab J, Butzner M, Heitner S, Jacoby D, Sohn R, Masri A. Cardiovascular Hospitalizationspost Septal Myectomy For Obstructive Hypertrophic Cardiomyopathy: A 3-year Analysis Of 5,101 Patients. Journal Of Cardiac Failure 2024, 30: 199-200. DOI: 10.1016/j.cardfail.2023.10.201.Peer-Reviewed Original ResearchObstructive hypertrophic cardiomyopathyIncidence of cardiovascular hospitalizationsSeptal myectomyCardiovascular hospitalizationChronic kidney diseaseChronic obstructive pulmonary diseaseHypertrophic cardiomyopathyPost-SMVentricular arrhythmiasHeart failureCumulative incidence of cardiovascular hospitalizationsFollow-upYears median follow-upMedian follow-upAdvanced HF therapiesHealth claims databaseAdvanced heart failureEmergency department visitsPacemaker/implantable cardioverter defibrillatorObstructive pulmonary diseaseHF therapyAtrial fibrillation/flutterCumulative incidenceCardiac arrestMultivariate regression model
2022
Impact of SARS‐Cov‐2 infection in patients with hypertrophic cardiomyopathy: results of an international multicentre registry
Gimeno JR, Olivotto I, Rodríguez AI, Ho CY, Fernández A, Quiroga A, Espinosa MA, Gómez‐González C, Robledo M, Tojal‐Sierra L, Day SM, Owens A, Barriales‐Villa R, Larrañaga JM, Rodríguez‐Palomares J, González‐del‐Hoyo M, Piqueras‐Flores J, Reza N, Chumakova O, Ashley EA, Parikh V, Wheeler M, Jacoby D, Pereira AC, Saberi S, Helms AS, Villacorta E, Gallego‐Delgado M, de Castro D, Domínguez F, Ripoll‐Vera T, Zorio‐Grima E, Sánchez‐Martínez J, García‐Álvarez A, Arbelo E, Mogollón MV, Fuentes‐Cañamero M, Grande E, Peña C, Monserrat L, Lakdawala NK, Muñoz‐Esparza C, García‐Pinilla J, Robles‐Mezcua A, Moreno‐Flores M, Peña M, Merlo M, Cubillo D, Climent‐Payá V, Dankovtseva E, Vilela A, García‐Pavía P, Casas G. Impact of SARS‐Cov‐2 infection in patients with hypertrophic cardiomyopathy: results of an international multicentre registry. ESC Heart Failure 2022, 9: 2189-2198. PMID: 36255281, PMCID: PMC9288745, DOI: 10.1002/ehf2.13964.Peer-Reviewed Original ResearchConceptsSARS-CoV-2 infectionVentricular outflow tract obstructionOutflow tract obstructionRisk of mortalityHypertrophic cardiomyopathySARS-CoV-2HCM patientsSystolic impairmentTract obstructionOdds ratioBaseline New York Heart Association classNew York Heart Association classLeft ventricular outflow tract obstructionControl groupPresence of HCMBaseline functional classInternational multicentre registryVentricular systolic impairmentSevere clinical courseMulticentre registryNew onsetRespiratory failureAdverse eventsICU careAssociation classSarcomere protein modulation: The new frontier in cardiovascular medicine and beyond
Morelli C, Ingrasciotta G, Jacoby D, Masri A, Olivotto I. Sarcomere protein modulation: The new frontier in cardiovascular medicine and beyond. European Journal Of Internal Medicine 2022, 102: 1-7. PMID: 35534374, DOI: 10.1016/j.ejim.2022.04.020.Peer-Reviewed Original ResearchConceptsHeart failureCardiovascular medicineVentricular outflow obstructionHeart muscle diseaseDegenerative neuromuscular diseaseSpecific disease mechanismsCardiovascular deathOutflow obstructionSystolic functionRandomized trialsUnderlying pathophysiologyCardiac patientsOmecamtiv mecarbilHypertrophic cardiomyopathyFunctional capacityNeuromuscular diseaseMuscle diseaseAvailable evidenceContractile proteinsSkeletal muscleTranslational researchPromising targetDiseaseDisease mechanismsFailureMuscle LIM Protein Force-Sensing Mediates Sarcomeric Biomechanical Signaling in Human Familial Hypertrophic Cardiomyopathy
Riaz M, Park J, Sewanan LR, Ren Y, Schwan J, Das SK, Pomianowski PT, Huang Y, Ellis MW, Luo J, Liu J, Song L, Chen IP, Qiu C, Yazawa M, Tellides G, Hwa J, Young LH, Yang L, Marboe CC, Jacoby DL, Campbell SG, Qyang Y. Muscle LIM Protein Force-Sensing Mediates Sarcomeric Biomechanical Signaling in Human Familial Hypertrophic Cardiomyopathy. Circulation 2022, 145: 1238-1253. PMID: 35384713, PMCID: PMC9109819, DOI: 10.1161/circulationaha.121.056265.Peer-Reviewed Original ResearchConceptsHypertrophic cardiomyopathySarcomeric mutationsFamilial hypertrophic cardiomyopathySudden cardiac deathCardiac myosin heavy chainMechanism-based treatmentsDevelopment of hypertrophyActivated T cellsCalcineurin-nuclear factorForce productionPhenotypic expressionPluripotent stem cell-derived cardiomyocytesStem cell-derived cardiomyocytesHeart failureCardiac deathVentricular hypertrophyCell-derived cardiomyocytesCardiac contractilityPharmacological interventionsT cellsCardiac diseaseCardiac hypertrophyPatient-specific induced pluripotent stem cellsPharmacological meansTwitch relaxation
2021
Effect of Mavacamten on Echocardiographic Features in Symptomatic Patients With Obstructive Hypertrophic Cardiomyopathy
Hegde SM, Lester SJ, Solomon SD, Michels M, Elliott PM, Nagueh SF, Choudhury L, Zemanek D, Zwas DR, Jacoby D, Wang A, Ho CY, Li W, Sehnert AJ, Olivotto I, Abraham TP. Effect of Mavacamten on Echocardiographic Features in Symptomatic Patients With Obstructive Hypertrophic Cardiomyopathy. Journal Of The American College Of Cardiology 2021, 78: 2518-2532. PMID: 34915982, DOI: 10.1016/j.jacc.2021.09.1381.Peer-Reviewed Original ResearchConceptsObstructive hypertrophic cardiomyopathySystolic anterior motionAnterior motionDiastolic functionHypertrophic cardiomyopathyN-terminal pro-B-type natriuretic peptideMitral valve systolic anterior motionPro-B-type natriuretic peptidePeak exercise oxygen consumptionLeft ventricular diastolic functionVentricular outflow tract obstructionKey echocardiographic parametersAtrial volume indexOutflow tract obstructionVentricular diastolic functionExercise oxygen consumptionEffect of mavacamtenMyocardial wall stressEXPLORER-HCMLVOT gradientEchocardiographic featuresEchocardiographic parametersLVOT obstructionTract obstructionExercise capacityWorldwide differences in primary prevention implantable cardioverter defibrillator utilization and outcomes in hypertrophic cardiomyopathy.
Nauffal V, Marstrand P, Han L, Parikh VN, Helms AS, Ingles J, Jacoby D, Lakdawala NK, Kapur S, Michels M, Owens AT, Ashley EA, Pereira AC, Rossano JW, Saberi S, Semsarian C, Ware JS, Wittekind SG, Day S, Olivotto I, Ho CY. Worldwide differences in primary prevention implantable cardioverter defibrillator utilization and outcomes in hypertrophic cardiomyopathy. European Heart Journal 2021, 42: 3932-3944. PMID: 36282238, DOI: 10.1093/eurheartj/ehab598.Peer-Reviewed Original ResearchConceptsSudden cardiac deathAppropriate ICD therapyNon-US sitesHypertrophic cardiomyopathyUS sitesICD therapySCD riskICD recipientsImplantation rateImplantable cardioverter-defibrillator (ICD) implantation ratesMultivariable Cox proportional hazards modelsImplantable cardioverter-defibrillator utilizationSarcomeric Human Cardiomyopathy RegistryCox proportional hazards modelHCM Risk-SCD scoreICD implantation ratesPrimary prevention ICDsSCD risk factorsRisk stratification algorithmLong-term outcomesLow-risk populationSignificant differencesSCD/Cardiac deathClinical outcomesWorldwide differences in primary prevention implantable cardioverter defibrillator utilization and outcomes in hypertrophic cardiomyopathy
Nauffal V, Marstrand P, Han L, Parikh VN, Helms AS, Ingles J, Jacoby D, Lakdawala NK, Kapur S, Michels M, Owens AT, Ashley EA, Pereira AC, Rossano JW, Saberi S, Semsarian C, Ware JS, Wittekind SG, Day S, Olivotto I, Ho CY. Worldwide differences in primary prevention implantable cardioverter defibrillator utilization and outcomes in hypertrophic cardiomyopathy. European Heart Journal 2021, 42: 3932-3944. PMID: 34491319, PMCID: PMC8497072, DOI: 10.1093/eurheartj/ehab598.Peer-Reviewed Original ResearchConceptsSudden cardiac deathAppropriate ICD therapyNon-US sitesHypertrophic cardiomyopathyUS sitesICD therapySCD riskICD recipientsImplantation rateImplantable cardioverter-defibrillator (ICD) implantation ratesMultivariable Cox proportional hazards modelsImplantable cardioverter-defibrillator utilizationSarcomeric Human Cardiomyopathy RegistryCox proportional hazards modelHCM Risk-SCD scoreICD implantation ratesPrimary prevention ICDsSCD risk factorsRisk stratification algorithmLong-term outcomesLow-risk populationSignificant differencesSCD/Cardiac deathClinical outcomesLoss of crossbridge inhibition drives pathological cardiac hypertrophy in patients harboring the TPM1 E192K mutation
Sewanan LR, Park J, Rynkiewicz MJ, Racca AW, Papoutsidakis N, Schwan J, Jacoby DL, Moore JR, Lehman W, Qyang Y, Campbell SG. Loss of crossbridge inhibition drives pathological cardiac hypertrophy in patients harboring the TPM1 E192K mutation. The Journal Of General Physiology 2021, 153: e202012640. PMID: 34319370, PMCID: PMC8321830, DOI: 10.1085/jgp.202012640.Peer-Reviewed Original ResearchConceptsHypertrophic cardiomyopathyHeart tissueCellular hypertrophyEngineered Heart TissuePathological cardiac hypertrophyThin filament mutationsMavacamten treatmentDiastolic dysfunctionDisease featuresHypertrophic effectCardiac hypertrophyContractile differencesHypertrophyFundamental disease mechanismsCrossbridge activityInherited disorderOverall Ca2Uncertain significancePatient phenotypesDisease mechanismsLow Ca2PatientsK mutationMavacamtenTissuePredictors of Major Atrial Fibrillation Endpoints in the National Heart, Lung, and Blood Institute HCMR
Kramer CM, DiMarco JP, Kolm P, Ho CY, Desai MY, Kwong RY, Dolman SF, Desvigne-Nickens P, Geller N, Kim DY, Maron MS, Appelbaum E, Jerosch-Herold M, Friedrich MG, Schulz-Menger J, Piechnik SK, Mahmod M, Jacoby D, White J, Chiribiri A, Helms A, Choudhury L, Michels M, Bradlow W, Salerno M, Dawson DK, Weinsaft JW, Berry C, Nagueh SF, Buccarelli-Ducci C, Owens A, Casadei B, Watkins H, Weintraub WS, Neubauer S, Investigators H. Predictors of Major Atrial Fibrillation Endpoints in the National Heart, Lung, and Blood Institute HCMR. JACC Clinical Electrophysiology 2021, 7: 1376-1386. PMID: 34217663, PMCID: PMC8605982, DOI: 10.1016/j.jacep.2021.04.004.Peer-Reviewed Original ResearchConceptsBody mass indexSevere mitral regurgitationHistory of arrhythmiaMitral regurgitationHypertrophic cardiomyopathyAtrial fibrillationLA volumeProspective natural history studyVolume indexHigher body mass indexAtrial volume indexLA volume indexPermanent atrial fibrillationOlder adult patientsStrong risk factorNatural history studiesCommon morbidityAdult patientsElectrical cardioversionYounger patientsCatheter ablationEndpoint eventsMass indexNational HeartRisk factorsMavacamten for treatment of symptomatic obstructive hypertrophic cardiomyopathy (EXPLORER-HCM): health status analysis of a randomised, double-blind, placebo-controlled, phase 3 trial
Spertus JA, Fine JT, Elliott P, Ho CY, Olivotto I, Saberi S, Li W, Dolan C, Reaney M, Sehnert AJ, Jacoby D. Mavacamten for treatment of symptomatic obstructive hypertrophic cardiomyopathy (EXPLORER-HCM): health status analysis of a randomised, double-blind, placebo-controlled, phase 3 trial. The Lancet 2021, 397: 2467-2475. PMID: 34004177, DOI: 10.1016/s0140-6736(21)00763-7.Peer-Reviewed Original ResearchConceptsKansas City Cardiomyopathy QuestionnaireSymptomatic obstructive hypertrophic cardiomyopathyObstructive hypertrophic cardiomyopathyHypertrophic cardiomyopathyPatients' health statusQuality of lifeHealth statusWeek 30KCCQ overall summary scoreAvailable pharmacological optionsKCCQ-OS scorePlacebo-controlled trialPhase 3 trialProportion of patientsPrimary treatment goalOverall summary scoreDisease-specific measuresEffect of mavacamtenHealth status analysisNew potential strategyEXPLORER-HCMPlacebo groupAdult patientsBristol-Myers Squibb CompanyPharmacological optionsComputational prediction of protein subdomain stability in MYBPC3 enables clinical risk stratification in hypertrophic cardiomyopathy and enhances variant interpretation
Thompson AD, Helms AS, Kannan A, Yob J, Lakdawala NK, Wittekind SG, Pereira AC, Jacoby DL, Colan SD, Ashley EA, Saberi S, Ware JS, Ingles J, Semsarian C, Michels M, Mazzarotto F, Olivotto I, Ho CY, Day SM. Computational prediction of protein subdomain stability in MYBPC3 enables clinical risk stratification in hypertrophic cardiomyopathy and enhances variant interpretation. Genetics In Medicine 2021, 23: 1281-1287. PMID: 33782553, PMCID: PMC8257482, DOI: 10.1038/s41436-021-01134-9.Peer-Reviewed Original ResearchConceptsHypertrophic cardiomyopathyClinical riskMissense variantsSarcomeric Human Cardiomyopathy RegistryHigh clinical riskClinical risk stratificationAdverse eventsComposite endpointRisk stratificationHCM patientsCommon causePatientsLoss of functionUncertain significanceMYBPC3Missense VUSCardiomyopathyHigh rateSubstantial numberSupportive evidenceVUSRiskVariant interpretationEvent analysisMethodsAmongClinical characteristics and outcomes in childhood-onset hypertrophic cardiomyopathy
Marston NA, Han L, Olivotto I, Day SM, Ashley EA, Michels M, Pereira AC, Ingles J, Semsarian C, Jacoby D, Colan SD, Rossano JW, Wittekind SG, Ware JS, Saberi S, Helms AS, Ho CY. Clinical characteristics and outcomes in childhood-onset hypertrophic cardiomyopathy. European Heart Journal 2021, 42: 1988-1996. PMID: 33769460, PMCID: PMC8139852, DOI: 10.1093/eurheartj/ehab148.Peer-Reviewed Original ResearchConceptsChildhood-onset hypertrophic cardiomyopathyLife-threatening ventricular arrhythmiasHeart failureHypertrophic cardiomyopathyAtrial fibrillationVentricular arrhythmiasComposite endpointHCM patientsRisk of HFSarcomeric Human Cardiomyopathy RegistryNatural historyAdvanced HF therapiesOverall composite outcomeObservational cohort studyClinical risk stratificationHypertrophic cardiomyopathy patientsAge of diagnosisVentricular assist deviceAdult-onset diseaseHF therapyClinical characteristicsCohort studyComposite outcomeBaseline visitRisk stratification
2020
Associations Between Female Sex, Sarcomere Variants, and Clinical Outcomes in Hypertrophic Cardiomyopathy
Lakdawala NK, Olivotto I, Day SM, Han L, Ashley EA, Michels M, Ingles J, Semsarian C, Jacoby D, Jefferies JL, Colan SD, Pereira AC, Rossano JW, Wittekind S, Ware JS, Saberi S, Helms AS, Cirino AL, Leinwand LA, Seidman CE, Ho CY. Associations Between Female Sex, Sarcomere Variants, and Clinical Outcomes in Hypertrophic Cardiomyopathy. Circulation Genomic And Precision Medicine 2020, 14: e003062. PMID: 33284039, DOI: 10.1161/circgen.120.003062.Peer-Reviewed Original ResearchConceptsHypertrophic cardiomyopathyClinical outcomesNew York Heart Association IIIImplantable cardioverter-defibrillator utilizationSevere heart failure symptomsHeart failure symptomsReduced ejection fractionRetrospective cohort studyImpact of sexSex-based differencesHCM centersCause mortalityTract obstructionBaseline characteristicsCohort studyEjection fractionHeart failureVentricular arrhythmiasFemale sexHCM patientsMyocardial performanceFailure symptomsInternational registrySarcomere variantsHigh burdenDisease-specific variant pathogenicity prediction significantly improves variant interpretation in inherited cardiac conditions
Zhang X, Walsh R, Whiffin N, Buchan R, Midwinter W, Wilk A, Govind R, Li N, Ahmad M, Mazzarotto F, Roberts A, Theotokis PI, Mazaika E, Allouba M, de Marvao A, Pua CJ, Day SM, Ashley E, Colan SD, Michels M, Pereira AC, Jacoby D, Ho CY, Olivotto I, Gunnarsson GT, Jefferies JL, Semsarian C, Ingles J, O’Regan D, Aguib Y, Yacoub MH, Cook SA, Barton PJR, Bottolo L, Ware JS. Disease-specific variant pathogenicity prediction significantly improves variant interpretation in inherited cardiac conditions. Genetics In Medicine 2020, 23: 69-79. PMID: 33046849, PMCID: PMC7790749, DOI: 10.1038/s41436-020-00972-3.Peer-Reviewed Original ResearchConceptsRare missense variantsCardiac conditionsSevere adverse outcomesMissense variantsDisease-specific informationAdverse outcomesClinical severityPatient outcomesHypertrophic cardiomyopathyAge 60Disease statusDisease specificityFunction variantsBenign variantsCardiomyopathyRare variationProportion of variantsDisease-associated variantsOutcomesVariant interpretationProbability of pathogenicityGene-disease relationshipsVariant pathogenicity predictionPatientsArrhythmiasTemporal Trend of Age at Diagnosis in Hypertrophic Cardiomyopathy
Canepa M, Fumagalli C, Tini G, Vincent-Tompkins J, Day SM, Ashley EA, Mazzarotto F, Ware JS, Michels M, Jacoby D, Ho CY, Olivotto I, Investigators T. Temporal Trend of Age at Diagnosis in Hypertrophic Cardiomyopathy. Circulation Heart Failure 2020, 13: e007230-e007230. PMID: 32894986, PMCID: PMC7497482, DOI: 10.1161/circheartfailure.120.007230.Peer-Reviewed Original ResearchConceptsHypertrophic cardiomyopathyHCM diagnosisSarcomeric Human Cardiomyopathy RegistryGenetic testingHeart failure symptomsObstructive hypertrophic cardiomyopathyNon-US sitesEra of diagnosisLikely pathogenic variantsClinical characteristicsOlder patientsFamilial hypertrophic cardiomyopathyHCM populationVentricular hypertrophyFemale ratioFailure symptomsSporadic diseasePathogenic variantsAdvanced diagnostic toolsDiagnosisTemporal trendsStable maleMild phenotypeAgePatientsMavacamten for treatment of symptomatic obstructive hypertrophic cardiomyopathy (EXPLORER-HCM): a randomised, double-blind, placebo-controlled, phase 3 trial
Olivotto I, Oreziak A, Barriales-Villa R, Abraham TP, Masri A, Garcia-Pavia P, Saberi S, Lakdawala NK, Wheeler MT, Owens A, Kubanek M, Wojakowski W, Jensen MK, Gimeno-Blanes J, Afshar K, Myers J, Hegde SM, Solomon SD, Sehnert AJ, Zhang D, Li W, Bhattacharya M, Edelberg JM, Waldman CB, Lester SJ, Wang A, Ho CY, Jacoby D, investigators E, Bartunek J, Bondue A, Van Craenenbroeck E, Kubanek M, Zemanek D, Jensen M, Mogensen J, Thune J, Charron P, Hagege A, Lairez O, Trochu J, Axthelm C, Duengen H, Frey N, Mitrovic V, Preusch M, Schulz-Menger J, Seidler T, Arad M, Halabi M, Katz A, Monakier D, Paz O, Viskin S, Zwas D, Olivotto I, Rocca H, Michels M, Dudek D, Oko-Sarnowska Z, Oreziak A, Wojakowski W, Cardim N, Pereira H, Barriales-Villa R, Pavia P, Blanes J, Urbano R, Diaz L, Elliott P, Yousef Z, Abraham T, Afshar K, Alvarez P, Bach R, Becker R, Choudhury L, Fermin D, Jacoby D, Jefferies J, Kramer C, Lakdawala N, Lester S, Marian A, Masri A, Maurer M, Nagueh S, Owens A, Owens D, Rader F, Saberi S, Sherrid M, Shirani J, Symanski J, Turer A, Wang A, Wever-Pinzon O, Wheeler M, Wong T, Yamani M. Mavacamten for treatment of symptomatic obstructive hypertrophic cardiomyopathy (EXPLORER-HCM): a randomised, double-blind, placebo-controlled, phase 3 trial. The Lancet 2020, 396: 759-769. PMID: 32871100, DOI: 10.1016/s0140-6736(20)31792-x.Peer-Reviewed Original ResearchConceptsObstructive hypertrophic cardiomyopathyKansas City Cardiomyopathy Questionnaire clinical summary scoreSymptomatic obstructive hypertrophic cardiomyopathyHypertrophic cardiomyopathyLVOT gradientNYHA classPrimary endpointDynamic left ventricular outflow tract obstructionNew York Heart Association class IILeft ventricular outflow tract obstructionTreatment-emergent adverse eventsVentricular outflow tract obstructionAvailable pharmacological optionsKey pathophysiological abnormalityNYHA class reductionNYHA functional classOutflow tract obstructionPlacebo-controlled trialPhase 3 trialML/Disease-specific treatmentPeak oxygen consumptionGreater increaseLVOT obstructionPlacebo groupSpatial and Functional Distribution of MYBPC3 Pathogenic Variants and Clinical Outcomes in Patients with Hypertrophic Cardiomyopathy
Helms AS, Thompson AD, Glazier AA, Hafeez N, Kabani S, Rodriguez J, Yob JM, Woolcock H, Mazzarotto F, Lakdawala NK, Wittekind SG, Pereira AC, Jacoby DL, Colan SD, Ashley EA, Saberi S, Ware JS, Ingles J, Semsarian C, Michels M, Olivotto I, Ho CY, Day SM. Spatial and Functional Distribution of MYBPC3 Pathogenic Variants and Clinical Outcomes in Patients with Hypertrophic Cardiomyopathy. Circulation Genomic And Precision Medicine 2020, 13: 396-405. PMID: 32841044, PMCID: PMC7676622, DOI: 10.1161/circgen.120.002929.Peer-Reviewed Original ResearchConceptsHypertrophic cardiomyopathyPathogenic variantsClinical outcomesSarcomeric Human Cardiomyopathy RegistryTruncating variantsHypertrophic cardiomyopathy cohortAdverse event ratesSimilar clinical severityDetailed genotype-phenotype correlationRat ventricular myocytesC10 domainCardiomyopathy cohortGenotype-phenotype correlationMyofilament incorporationFamilial hypertrophic cardiomyopathyClinical severityGenotyped patientsCommon causeMorphological severityTime-event analysisCardiac morphologyPatientsLoss of functionCardiomyopathyVentricular myocytes