2024
Categorical and Dimensional Approaches for Psychiatric Classification and Treatment Targeting: Considerations from Psychosis Biotypes
Clementz B, Assaf M, Sweeney J, Gershon E, Keedy S, Hill S, Ivleva E, Tamminga C, McDowell J, Keshavan M, Gibbons R, Carpenter W, Pearlson G. Categorical and Dimensional Approaches for Psychiatric Classification and Treatment Targeting: Considerations from Psychosis Biotypes. Advances In Neurobiology 2024, 40: 685-723. PMID: 39562461, DOI: 10.1007/978-3-031-69491-2_23.Peer-Reviewed Original ResearchConceptsIdiopathic psychosisBiotype-1Response to clozapineBipolar-Schizophrenia NetworkContinuum of severityReduced physiological responseDSM diagnosesNeurobiological distinctionsCategorical diagnosisSchizophrenia NetworkDiagnostic boundariesSalient stimuliPsychosis diagnosisPsychosis casesPsychiatric classificationPsychosis dataPsychosisBiotype-2Identified biotypesNeural activityIntermediate phenotypesTreatment targetElectrophysiological biomarkersElectrophysiological measurementsMedical model
2023
Supervised machine learning classification of psychosis biotypes based on brain structure: findings from the Bipolar-Schizophrenia network for intermediate phenotypes (B-SNIP)
Koen J, Lewis L, Rugg M, Clementz B, Keshavan M, Pearlson G, Sweeney J, Tamminga C, Ivleva E. Supervised machine learning classification of psychosis biotypes based on brain structure: findings from the Bipolar-Schizophrenia network for intermediate phenotypes (B-SNIP). Scientific Reports 2023, 13: 12980. PMID: 37563219, PMCID: PMC10415369, DOI: 10.1038/s41598-023-38101-0.Peer-Reviewed Original ResearchConceptsPsychosis biotypesPsychosis casesBrain-based biomarkersLogistic regression modelsT1-weighted imagesBipolar-Schizophrenia NetworkHealthy controlsDisease neurobiologyPsychotic disordersClinical diagnosisStructural MRIBrain structuresGrey matter density mapsDSM diagnosesEvidence of specificityAbove-chance classification accuracyEmotional scene processing in biotypes of psychosis
Trotti R, Parker D, Sabatinelli D, Keshavan M, Keedy S, Gershon E, Pearlson G, Hill S, Tamminga C, McDowell J, Clementz B. Emotional scene processing in biotypes of psychosis. Psychiatry Research 2023, 324: 115227. PMID: 37121219, PMCID: PMC10175237, DOI: 10.1016/j.psychres.2023.115227.Peer-Reviewed Original ResearchConceptsSocial-emotional deficitsEmotional scenesSelf-reported emotional experienceEvent-related potential studyEmotional scene processingEmotional processing deficitsPsychosis groupPsychosis subgroupsSocio-occupational functioningEmotional processingProcessing deficitsScene processingEmotional experienceNeurophysiological correlatesNeural responsesPotential studiesScalp locationsPsychosis biotypesERPCurrent studyDeficitsFirst variateFuture translational researchPsychosisPsychosis cases
2020
O3.4. PSYCHOSIS PHENOTYPES FROM B-SNIP FOR CLINICAL ADVANCES: BIOTYPE CHARACTERISTICS AND TARGETS
Clementz B, Trotti R, Pearlson G, Keshavan M, Gershon E, Keedy S, Ivleva E, McDowell J, Tamminga C. O3.4. PSYCHOSIS PHENOTYPES FROM B-SNIP FOR CLINICAL ADVANCES: BIOTYPE CHARACTERISTICS AND TARGETS. Schizophrenia Bulletin 2020, 46: s7-s7. PMCID: PMC7234003, DOI: 10.1093/schbul/sbaa028.015.Peer-Reviewed Original ResearchClinical featuresPsychosis biotypesPsychosis casesPsychosis syndromeTreatment targetsSpecific treatment targetsB-SNIPClinical manifestationsBiomarker profilesPsychosis subgroupsB-SNIP consortiumDeep phenotyping approachPathophysiological mechanismsPsychosis patientsBipolar-Schizophrenia NetworkPsychosis diagnosisBiological subtypesHealthy personsClinical practiceClinical advancesNegative symptomsClinical phenomenologySyndromeAuditory paired-stimuli responses across the psychosis and bipolar spectrum and their relationship to clinical features
Parker D, Trotti R, McDowell J, Keedy S, Gershon E, Ivleva E, Pearlson G, Keshavan M, Tamminga C, Sweeney J, Clementz B. Auditory paired-stimuli responses across the psychosis and bipolar spectrum and their relationship to clinical features. Biomarkers In Neuropsychiatry 2020, 3: 100014. PMID: 36644018, PMCID: PMC9837793, DOI: 10.1016/j.bionps.2020.100014.Peer-Reviewed Original ResearchSchizoaffective disorderGroup differencesBipolar disorderAuditory paired-stimulus paradigmPaired-stimulus paradigmNeural responsesIdentification of biomarkersB-SNIPClinical featuresSignificant group differencesPsychosis subjectsBipolar-Schizophrenia NetworkPsychosis casesHealthy subjectsPreparatory periodPsychosis syndromeFrequency principal components analysisMania symptomsP50 responsePositive symptomsClinical phenotypeAffective syndromeBipolar spectrumPsychosisPutative biomarkers
2019
Intrinsic neural activity differences in psychosis biotypes: Findings from the Bipolar-Schizophrenia Network on Intermediate Phenotypes (B-SNIP) consortium
Thomas O, Parker D, Trotti R, McDowell J, Gershon E, Sweeney J, Keshavan M, Keedy S, Ivleva E, Tamminga C, Pearlson G, Clementz B. Intrinsic neural activity differences in psychosis biotypes: Findings from the Bipolar-Schizophrenia Network on Intermediate Phenotypes (B-SNIP) consortium. Biomarkers In Neuropsychiatry 2019, 1: 100002. PMID: 36643612, PMCID: PMC9837786, DOI: 10.1016/j.bionps.2019.100002.Peer-Reviewed Original ResearchPsychosis biotypesHealthy personsBipolar-Schizophrenia NetworkSingle-trial powerFirst-degree biological relativesNeural activity differencesInter-stimulus intervalBiotype 2Intermediate Phenotypes (B-SNIP) consortiumPsychosis casesEffective treatmentIntrinsic activityPsychosis subgroupsNeural modulationLow intrinsic activityDSM groupNeural activitySocial functioningBiotype characterizationBiological relativesConventional diagnosisIntermediate phenotypesDifferentiating featuresDSM syndromesProbands
2018
9.3 PSYCHOSIS BIOTYPES VERSUS CLINICAL SYNDROMES THROUGH THE PRISM OF INTRINSIC NEURAL ACTIVITY
Clementz B, Pearlson G, Tamminga C, Sweeney J, Keshavan M. 9.3 PSYCHOSIS BIOTYPES VERSUS CLINICAL SYNDROMES THROUGH THE PRISM OF INTRINSIC NEURAL ACTIVITY. Schizophrenia Bulletin 2018, 44: s14-s14. PMCID: PMC5888365, DOI: 10.1093/schbul/sby014.031.Peer-Reviewed Original ResearchInter-trial intervalNeural activityIntrinsic neural activityPsychosis biotypesDSM diagnosesSingle-trial powerOngoing neural activityBipolar-Schizophrenia NetworkHealthy personsStimulus salienceNeural responsesNeural oscillationsB-SNIPNeurobiological similaritiesNeurophysiological modelFirst-degree relativesEEG measuresTreatment developmentSensory cortexTranslational research programClinical featuresDistinct physiological mechanismsHealthy groupPsychosis diagnosisPsychosis cases