Featured Publications
Meta-Analysis of the Symptom Structure of Obsessive-Compulsive Disorder
Bloch MH, Landeros-Weisenberger A, Rosario MC, Pittenger C, Leckman JF. Meta-Analysis of the Symptom Structure of Obsessive-Compulsive Disorder. American Journal Of Psychiatry 2008, 165: 1532-1542. PMID: 18923068, PMCID: PMC3972003, DOI: 10.1176/appi.ajp.2008.08020320.Peer-Reviewed Original Research
2021
A Phase-2 Pilot Study of a Therapeutic Combination of Δ9-Tetrahydracannabinol and Palmitoylethanolamide for Adults With Tourette’s Syndrome
Bloch MH, Landeros-Weisenberger A, Johnson JA, Leckman JF. A Phase-2 Pilot Study of a Therapeutic Combination of Δ9-Tetrahydracannabinol and Palmitoylethanolamide for Adults With Tourette’s Syndrome. Journal Of Neuropsychiatry 2021, 33: 328-336. PMID: 34340527, DOI: 10.1176/appi.neuropsych.19080178.Peer-Reviewed Original ResearchConceptsTourette syndromeTic symptomsUncontrolled trialsYale Global Tic Severity Scale-Total Tic ScoreDouble-blind placebo-controlled trialAvailable evidence-based treatmentsPhase 2 pilot studyExtension phasePlacebo-controlled trialRefractory Tourette syndromeTotal tic scoreEffective pharmacological treatmentCannabis-derived compoundsEvidence-based treatmentsTHC dosingSecondary outcomesPrimary outcomeComorbid conditionsPharmacological treatmentTic scoreYGTSS scoresTherapeutic combinationsSide effectsTrial designSyndrome
2019
Measuring Treatment Response in Pediatric Trichotillomania: A Meta-Analysis of Clinical Trials
Farhat LC, Olfson E, Levine JLS, Li F, Franklin ME, Lee HJ, Lewin AB, McGuire JF, Rahman O, Storch EA, Tolin DF, Zickgraf HF, Bloch MH. Measuring Treatment Response in Pediatric Trichotillomania: A Meta-Analysis of Clinical Trials. Journal Of Child And Adolescent Psychopharmacology 2019, 30: 306-315. PMID: 31794677, PMCID: PMC7476376, DOI: 10.1089/cap.2019.0103.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAge FactorsChildHumansSeverity of Illness IndexTreatment OutcomeTrichotillomaniaConceptsClinical trialsTreatment responseOptimal cut pointCut pointsMassachusetts General Hospital Hair Pulling ScalePediatric trichotillomaniaClinical Global Impressions-Improvement scoreMeta-DiSc softwareClinical responsePediatric populationAge-related differencesSeverity ScaleImprovement scoresMeta-AnalysisYouden indexStandardized definitionsTTM severityOlder childrenTrichotillomaniaTrialsParent versionNational InstituteYoung childrenMGH-HPSDiscriminative abilityRandomized, Sham-Controlled Trial of Real-Time Functional Magnetic Resonance Imaging Neurofeedback for Tics in Adolescents With Tourette Syndrome
Sukhodolsky DG, Walsh C, Koller WN, Eilbott J, Rance M, Fulbright RK, Zhao Z, Bloch MH, King R, Leckman JF, Scheinost D, Pittman B, Hampson M. Randomized, Sham-Controlled Trial of Real-Time Functional Magnetic Resonance Imaging Neurofeedback for Tics in Adolescents With Tourette Syndrome. Biological Psychiatry 2019, 87: 1063-1070. PMID: 31668476, PMCID: PMC7015800, DOI: 10.1016/j.biopsych.2019.07.035.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentCross-Over StudiesHumansMagnetic Resonance ImagingNeurofeedbackSeverity of Illness IndexTicsTourette SyndromeConceptsSupplementary motor areaYale Global Tic Severity ScaleFunctional magnetic resonanceTic Severity ScaleReal-time functional magnetic resonanceTourette syndromeSeverity ScaleYale Global Tic Severity Scale-Total Tic ScoreTotal tic scorePrimary outcome measureSham control conditionReduction of ticsMagnetic resonanceSecondary outcomesSessions of neurofeedbackCrossover studyTic symptomsTic scoreOutcome measuresMotor areaSecondary measuresTic severityReal neurofeedbackEnd pointNeurofeedback intervention
2016
N-Acetylcysteine in the Treatment of Pediatric Tourette Syndrome: Randomized, Double-Blind, Placebo-Controlled Add-On Trial
Bloch MH, Panza KE, Yaffa A, Alvarenga PG, Jakubovski E, Mulqueen JM, Landeros-Weisenberger A, Leckman JF. N-Acetylcysteine in the Treatment of Pediatric Tourette Syndrome: Randomized, Double-Blind, Placebo-Controlled Add-On Trial. Journal Of Child And Adolescent Psychopharmacology 2016, 26: 327-334. PMID: 27027204, PMCID: PMC6445198, DOI: 10.1089/cap.2015.0109.Peer-Reviewed Original ResearchConceptsBenefit of NACEfficacy of NACYale Global Tic Severity ScaleAttention-deficit/hyperactivity disorderObsessive-compulsive disorderTourette syndromeN-acetylcysteineObsessive-compulsive spectrum disordersSide effectsRecent placebo-controlled trialPediatric Tourette syndromePlacebo-controlled trialCurrent pharmacological treatmentsTreatment of ticsTotal tic scoreSeverity of ticsSubstantial side effectsTic Severity ScaleYears of ageMinimal side effectsPediatric TSPrimary outcomeSecondary outcomesGlutamatergic systemPharmacological treatment
2015
LONG‐TERM OUTCOME IN PEDIATRIC TRICHOTILLOMANIA
Schumer MC, Panza KE, Mulqueen JM, Jakubovski E, Bloch MH. LONG‐TERM OUTCOME IN PEDIATRIC TRICHOTILLOMANIA. Depression And Anxiety 2015, 32: 737-743. PMID: 26139231, PMCID: PMC4591183, DOI: 10.1002/da.22390.Peer-Reviewed Original ResearchMeSH KeywordsAcetylcysteineAdolescentAnxietyBehavior TherapyChildComorbidityDepressionDouble-Blind MethodFemaleHumansMaleSeverity of Illness IndexTreatment OutcomeTrichotillomaniaConceptsPoor long-term prognosisLong-term prognosisLong-term outcomesN-acetylcysteineDepressive symptomsPediatric trichotillomaniaTrichotillomania symptomsOlder ageAdequate symptom reliefPlacebo-controlled trialAnxiety symptomsPredictors of outcomePrevious cross-sectional studiesRisk of depressionCross-sectional studyPrimary outcomeSymptom reliefAcute phaseClinical assessmentTreatment utilizationBaseline evaluationSecondary measuresBaseline assessmentSymptomsBehavioral treatmentMeta-Analysis: Risk of Tics Associated With Psychostimulant Use in Randomized, Placebo-Controlled Trials
Cohen SC, Mulqueen JM, Ferracioli-Oda E, Stuckelman ZD, Coughlin CG, Leckman JF, Bloch MH. Meta-Analysis: Risk of Tics Associated With Psychostimulant Use in Randomized, Placebo-Controlled Trials. Journal Of The American Academy Of Child & Adolescent Psychiatry 2015, 54: 728-736. PMID: 26299294, DOI: 10.1016/j.jaac.2015.06.011.Peer-Reviewed Original ResearchConceptsWorsening of ticsRisk of ticsAttention-deficit/hyperactivity disorderPlacebo-controlled trialNew onsetDuration of treatmentPsychostimulant usePsychostimulant medicationNew-onset ticsType of psychostimulantsParallel-group trialStratified subgroup analysisSide effect dataTreatment of childrenAge of participantsPlacebo groupAdverse eventsCrossover studyPsychostimulant treatmentTic symptomsRisk ratioSubgroup analysisFamily historyGroup trialsPubMed search
2014
Prognostic subgroups for remission and response in the Coordinated Anxiety Learning and Management (CALM) trial.
Kelly JM, Jakubovski E, Bloch MH. Prognostic subgroups for remission and response in the Coordinated Anxiety Learning and Management (CALM) trial. The Journal Of Clinical Psychiatry 2014, 76: 267-78. PMID: 25562579, PMCID: PMC4930076, DOI: 10.4088/jcp.13m08922.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdrenergic Uptake InhibitorsAdultAgedAnti-Anxiety AgentsAnxiety DisordersBenzodiazepinesCognitive Behavioral TherapyCombined Modality TherapyDepressive Disorder, MajorFemaleHumansMaleMiddle AgedOutcome Assessment, Health CarePanic DisorderPhobic DisordersPrognosisRemission InductionSelective Serotonin Reuptake InhibitorsSeverity of Illness IndexSex FactorsSocial ClassSocial SupportStress Disorders, Post-TraumaticYoung AdultConceptsLow socioeconomic statusCoordinated Anxiety LearningUsual careGeneralized anxiety disorderPosttraumatic stress disorderAnxiety disordersBaseline characteristicsPatient characteristicsPrognostic subgroupsAnxiety LearningSocioeconomic statusBaseline patient characteristicsCollaborative care interventionPrimary care settingPoor treatment outcomesCommunity treatment centersDSM-IV criteriaManagement trialsCognitive behavioral therapyLimited social supportExploratory moderator analysesMost patientsRemission criteriaComorbid depressionPrognostic outcomesCross-Disorder Genome-Wide Analyses Suggest a Complex Genetic Relationship Between Tourette’s Syndrome and OCD
Yu D, Mathews CA, Scharf JM, Neale BM, Davis LK, Gamazon ER, Derks EM, Evans P, Edlund CK, Crane J, Fagerness JA, Osiecki L, Gallagher P, Gerber G, Haddad S, Illmann C, McGrath LM, Mayerfeld C, Arepalli S, Barlassina C, Barr CL, Bellodi L, Benarroch F, Berrió GB, Bienvenu OJ, Black DW, Bloch MH, Brentani H, Bruun RD, Budman CL, Camarena B, Campbell DD, Cappi C, Silgado JC, Cavallini MC, Chavira DA, Chouinard S, Cook EH, Cookson MR, Coric V, Cullen B, Cusi D, Delorme R, Denys D, Dion Y, Eapen V, Egberts K, Falkai P, Fernandez T, Fournier E, Garrido H, Geller D, Gilbert DL, Girard SL, Grabe HJ, Grados MA, Greenberg BD, Gross-Tsur V, Grünblatt E, Hardy J, Heiman GA, Hemmings SM, Herrera LD, Hezel DM, Hoekstra PJ, Jankovic J, Kennedy JL, King RA, Konkashbaev AI, Kremeyer B, Kurlan R, Lanzagorta N, Leboyer M, Leckman JF, Lennertz L, Liu C, Lochner C, Lowe TL, Lupoli S, Macciardi F, Maier W, Manunta P, Marconi M, McCracken JT, Mesa Restrepo SC, Moessner R, Moorjani P, Morgan J, Muller H, Murphy DL, Naarden AL, Nurmi E, Ochoa WC, Ophoff RA, Pakstis AJ, Pato MT, Pato CN, Piacentini J, Pittenger C, Pollak Y, Rauch SL, Renner T, Reus VI, Richter MA, Riddle MA, Robertson MM, Romero R, Rosário MC, Rosenberg D, Ruhrmann S, Sabatti C, Salvi E, Sampaio AS, Samuels J, Sandor P, Service SK, Sheppard B, Singer HS, Smit JH, Stein DJ, Strengman E, Tischfield JA, Turiel M, Valencia Duarte AV, Vallada H, Veenstra-VanderWeele J, Walitza S, Wang Y, Weale M, Weiss R, Wendland JR, Westenberg HG, Shugart YY, Hounie AG, Miguel EC, Nicolini H, Wagner M, Ruiz-Linares A, Cath DC, McMahon W, Posthuma D, Oostra BA, Nestadt G, Rouleau GA, Purcell S, Jenike MA, Heutink P, Hanna GL, Conti DV, Arnold PD, Freimer NB, Stewart SE, Knowles JA, Cox NJ, Pauls DL. Cross-Disorder Genome-Wide Analyses Suggest a Complex Genetic Relationship Between Tourette’s Syndrome and OCD. American Journal Of Psychiatry 2014, 172: 82-93. PMID: 25158072, PMCID: PMC4282594, DOI: 10.1176/appi.ajp.2014.13101306.Peer-Reviewed Original ResearchConceptsGenome-wide association studiesSingle nucleotide polymorphismsPolygenic score analysisGene expression levelsGenetic architecturePhenotypic varianceCombined genome-wide association studyFunctional variantsPolygenic componentPolygenic signalSignificant polygenic componentExpression levelsGWAS summary statisticsAncestry-matched controlsBrain gene expression levelsComplex genetic relationshipsHeritable neurodevelopmental disorderTrue functional variantsParent-child triosGWAS signalsIndividual single nucleotide polymorphismsWide analysisGenetic variationUnderlying genetic susceptibilityAssociation studies
2013
LONG‐TERM OUTCOME IN ADULTS WITH OBSESSIVE‐COMPULSIVE DISORDER
Bloch MH, Green C, Kichuk SA, Dombrowski PA, Wasylink S, Billingslea E, Landeros‐Weisenberger A, Kelmendi B, Goodman WK, Leckman JF, Coric V, Pittenger C. LONG‐TERM OUTCOME IN ADULTS WITH OBSESSIVE‐COMPULSIVE DISORDER. Depression And Anxiety 2013, 30: 716-722. PMID: 23532944, PMCID: PMC3932438, DOI: 10.1002/da.22103.Peer-Reviewed Original ResearchConceptsLong-term outcomesObsessive-compulsive disorderEvidence-based treatmentsAdult OCD patientsLong-term clinical outcomesSymptom severitySerotonin reuptake inhibitor medicationsOCD patientsPlacebo-controlled trialSerotonin reuptake inhibitorsReuptake inhibitor medicationsPercent of subjectsInitial responseSymptom dimensionsLater symptom severityOCD symptomsSignificant OCD symptomsOCD symptom dimensionsAdult patientsClinical characteristicsClinical improvementEligible subjectsPartial respondersInhibitor medicationReuptake inhibitorsN-Acetylcysteine in the Treatment of Pediatric Trichotillomania: A Randomized, Double-Blind, Placebo-Controlled Add-On Trial
Bloch MH, Panza KE, Grant JE, Pittenger C, Leckman JF. N-Acetylcysteine in the Treatment of Pediatric Trichotillomania: A Randomized, Double-Blind, Placebo-Controlled Add-On Trial. Journal Of The American Academy Of Child & Adolescent Psychiatry 2013, 52: 231-240. PMID: 23452680, PMCID: PMC3745012, DOI: 10.1016/j.jaac.2012.12.020.Peer-Reviewed Original ResearchConceptsN-acetylcysteinePharmacological interventionsPediatric trichotillomaniaBenefit of NACBehavioral therapySecondary outcome measuresTreatment of childrenClinician-rated improvementMassachusetts General HospitalTreat populationPlacebo groupPrimary outcomeNAC groupGeneral HospitalOutcome measuresTreatment respondersSecondary measuresPlaceboTreatment assignmentTrichotillomaniaLinear mixed modelsTrialsSignificant differencesChildrenTherapyAge and Gender Correlates of Pulling in Pediatric Trichotillomania
Panza KE, Pittenger C, Bloch MH. Age and Gender Correlates of Pulling in Pediatric Trichotillomania. Journal Of The American Academy Of Child & Adolescent Psychiatry 2013, 52: 241-249. PMID: 23452681, PMCID: PMC3745006, DOI: 10.1016/j.jaac.2012.12.019.Peer-Reviewed Original ResearchConceptsFrequent urgesCommon comorbid conditionsPediatric trichotillomaniaProspective longitudinal studyType of treatmentCross-sectional findingsClinical characteristicsComorbid conditionsStructured rating scaleTreatment trialsComorbid depressionRating ScaleAnxiety disordersOlder childrenTrichotillomaniaDecreased abilityLongitudinal studyMale participantsAgeChildrenGreater distressFemale participantsLower ratesSymptomsGender correlates
2012
Family accommodation in obsessive–compulsive disorder
Lebowitz ER, Panza KE, Su J, Bloch MH. Family accommodation in obsessive–compulsive disorder. Expert Review Of Neurotherapeutics 2012, 12: 229-238. PMID: 22288678, PMCID: PMC4011018, DOI: 10.1586/ern.11.200.Peer-Reviewed Original Research
2010
Predictors of early adulthood quality of life in children with obsessive–compulsive disorder
Palermo SD, Bloch MH, Craiglow B, Landeros-Weisenberger A, Dombrowski PA, Panza K, Smith ME, Peterson BS, Leckman JF. Predictors of early adulthood quality of life in children with obsessive–compulsive disorder. Social Psychiatry And Psychiatric Epidemiology 2010, 46: 291-297. PMID: 20191262, PMCID: PMC3645906, DOI: 10.1007/s00127-010-0194-2.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultChildFemaleForecastingHumansLongitudinal StudiesMaleObsessive-Compulsive DisorderQuality of LifeSeverity of Illness IndexSickness Impact ProfileTimeYoung AdultConceptsObsessive-compulsive disorderEarly adulthoodOCD symptomsImpaired Functioning ToolMethodsA longitudinal cohort studyLongitudinal cohort studyResultsForty-two percentSeverity of OCDAverage followClinical predictorsCohort studyPoor QoLResidual impairmentMild impairmentQoLSymptomsObjectivesThe goalAnxiety symptomsAdulthoodChildrenQoL.ChildhoodHoarding symptomsImpairmentDisorders
2009
Clinical course of Tourette syndrome
Bloch MH, Leckman JF. Clinical course of Tourette syndrome. Journal Of Psychosomatic Research 2009, 67: 497-501. PMID: 19913654, PMCID: PMC3974606, DOI: 10.1016/j.jpsychores.2009.09.002.Peer-Reviewed Original ResearchMeSH KeywordsAttention Deficit Disorder with HyperactivityDisease ProgressionHumansObsessive-Compulsive DisorderPrognosisSeverity of Illness IndexTourette SyndromeConceptsTourette syndromeComorbid conditionsObsessive-compulsive disorderClinical courseLong-term clinical courseChildhood-onset neuropsychiatric disorderEarly adulthoodLong-term outcomesAttention deficit disorderTic symptomsDepressive disorderTic disordersVocal ticsGeneral populationNeuropsychiatric disordersLiterature searchRelevant articlesDisordersSyndromeChildrenAdulthood outcomesOne-thirdSymptomsTraditional literature searchThree-quartersPredictors of Early Adult Outcomes in Pediatric-Onset Obsessive-Compulsive Disorder
Bloch MH, Craiglow BG, Landeros-Weisenberger A, Dombrowski PA, Panza KE, Peterson BS, Leckman JF. Predictors of Early Adult Outcomes in Pediatric-Onset Obsessive-Compulsive Disorder. Pediatrics 2009, 124: 1085-1093. PMID: 19786445, PMCID: PMC3974608, DOI: 10.1542/peds.2009-0015.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAge DistributionAge of OnsetChildChild, PreschoolCohort StudiesDisease ProgressionFemaleFollow-Up StudiesHumansIncidenceLongitudinal StudiesMaleMonitoring, PhysiologicMultivariate AnalysisObsessive-Compulsive DisorderPredictive Value of TestsProportional Hazards ModelsRisk FactorsSeverity of Illness IndexSex DistributionTic DisordersTime FactorsTourette SyndromeYoung AdultConceptsObsessive-compulsive disorderOCD symptomsBaseline clinical characteristicsPediatric-onset obsessive-compulsive disorderPersistent obsessive-compulsive disorderEarly adult outcomesLong-term outcomesMain outcome measuresLongitudinal cohort studyPercent of subjectsComorbid tic disordersOC symptomsHoarding symptomsAdult outcomesExperience remissionClinical characteristicsClinical predictorsCohort studyOppositional defiant disorderTic symptomsComorbid ticsEligible childrenTic disordersFemale genderOutcome measures
2006
Fine‐motor skill deficits in childhood predict adulthood tic severity and global psychosocial functioning in Tourette's syndrome
Bloch MH, Sukhodolsky DG, Leckman JF, Schultz RT. Fine‐motor skill deficits in childhood predict adulthood tic severity and global psychosocial functioning in Tourette's syndrome. Journal Of Child Psychology And Psychiatry 2006, 47: 551-559. PMID: 16712631, DOI: 10.1111/j.1469-7610.2005.01561.x.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultBasal GangliaChildFemaleFunctional LateralityHand StrengthHumansMaleMotor Skills DisordersNeuropsychological TestsObsessive-Compulsive DisorderPredictive Value of TestsPsychologyPsychomotor PerformanceSeverity of Illness IndexSocial BehaviorSurveys and QuestionnairesTourette SyndromeConceptsGlobal psychosocial functioningPurdue Pegboard TestFine motor skill deficitsTourette syndromeTic severityPegboard TestPsychosocial functioningTic symptomsTS patientsNeuropsychological testsStudy of TSBasal ganglia dysfunctionVisual-Motor Integration TestBeery Visual-Motor Integration TestLogistic regression analysisOrdinal logistic regression analysisFine motor coordinationMotor skill deficitsNeuropsychological testing batteryGanglia dysfunctionVisual-motor integrationClinical evaluationClinical assessmentClinical measuresNeuropsychological testingAdulthood Outcome of Tic and Obsessive-Compulsive Symptom Severity in Children With Tourette Syndrome
Bloch MH, Peterson BS, Scahill L, Otka J, Katsovich L, Zhang H, Leckman JF. Adulthood Outcome of Tic and Obsessive-Compulsive Symptom Severity in Children With Tourette Syndrome. JAMA Pediatrics 2006, 160: 65-69. PMID: 16389213, PMCID: PMC2291298, DOI: 10.1001/archpedi.160.1.65.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdrenergic alpha-AgonistsAdultAntipsychotic AgentsAttention Deficit Disorder with HyperactivityBipolar DisorderChildDepressive DisorderFemaleFollow-Up StudiesHumansIntelligence TestsMaleObsessive-Compulsive DisorderProspective StudiesSchizophreniaSelective Serotonin Reuptake InhibitorsSeverity of Illness IndexTic DisordersTourette SyndromeConceptsTic symptomsTourette syndromeTic severitySymptom severityObsessive-compulsive disorderBaseline clinical measurementsChildhood-onset neuropsychiatric disorderOCD symptomsPercent of patientsProspective cohort studyPercent of subjectsOutpatient specialty clinicsThird of childrenThird of adultsAge 14 yearsStructured clinical evaluationCohort studyClinical courseComplete resolutionClinical evaluationPhonic ticsSpecialty clinicFollow-up interviewObsessive-compulsive symptom severityAverage age