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CompletedNCT00167362Updated Jan 10, 2017

Cognitive Enhancement Therapy for Early-Stage Schizophrenia

A Phase 3 interventional study of Cognitive enhancement therapy (CET) and Enriched supportive therapy (EST) in Schizophrenia, sponsored by Beth Israel Deaconess Medical Center. Completed at 1 site in United States. Open to participants aged 16 Years to 51 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-01-10.

Sponsored by Beth Israel Deaconess Medical Center · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
67
Allocation
Randomized
Ages
16 Years to 51 Years
Sex
All
01

Study summary

This study will determine the effectiveness of cognitive enhancement therapy (CET) in treating cognitive abnormalities in people experiencing the early stages of schizophrenia.

Read the detailed description

In this study, we wish to determine the neurobiological predictors and the relative efficacy of Cognitive Enhancement Therapy (CET) in ameliorating specific cognitive abnormalities presumably mediated by PFC and related brain structures, among younger, early-course schizophrenia patients who potentially have a better prognosis. A series of recent-onset schizophrenic patients, whose psychotic symptoms have successfully been stabilized on an atypical antipsychotic drug for one year following initiation of treatment, will be randomized to CET combined with an enriched supportive therapy (EST) or EST alone, and treated for two years. Subjects will have been assessed on neurobehavioral and clinical indices immediately prior to beginning CET or EST (corresponding with the CNMD 1-year follow-up) and in the proposed study will again be assessed after 1 and 2 years of psychosocial treatment. In a smaller subset of patients, we will also seek to collect preliminary data on the efficacy of CET in reversing the neurobiological alterations in the PFC. The hypotheses of this study are:

  1. The presence of relatively well preserved PFC structure and function (PFC volume, activation with fMRI, and metabolism as measured by proton MRS) at baseline will predict a better response to CET (Neurobiological Prediction Hypothesis).
  2. CET combined with "enriched" supportive psychotherapy (EST) will be more effective than EST alone in ameliorating social and non-social cognitive deficits of patients with early schizophrenic illness whose psychotic symptoms have been stabilized on maintenance chemotherapy (The Treatment Efficacy Hypothesis).
  3. CET will result in additive, positive effects on neurocognitive parameters that were not observed following one year of antipsychotic medication, using a "sequential" treatment design in a subset of patients in whom we have pre-neuroleptic baseline data from CNMD studies (The Treatment Specificity Hypothesis).

Study Design: Subjects will be randomly assigned, once stabilized clinically, to CET plus EST (n = 30) or EST alone (n = 30) and then treated for up to two years. Clinical, neuropsychological, neurological and functional neuroimaging assessments will be administered at baseline and at two annual follow-ups. At the end of CET or EST treatment, subjects will be asked to come back quarterly to meet informally with either their Cognitive Enhancement Therapy clinicians and former group members, or with their Enriched Supportive Therapy clinician. The purpose of these visits is for us to learn more about the successes that patients have had, or about the difficulties that they might have had since leaving the program. Clinician(s) will also share information obtained during this follow-up which might help patient in overcoming these difficulties. At the end of the one-year period post EST or CET treatment, subjects will be assessed on all measures, except for diagnostic, imaging and blood studies.

02

Conditions studied

  • Schizophrenia

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Keywords

  • Schizophrenia
  • Cognition
  • Enhancement
  • Randomized
03

In context

Schizophrenia

3,471 studies on the registry are indexed under Schizophrenia; 472 are open to participants now.

This study's enrollment of 67 is close to the median of 70 across 2,872 interventional studies indexed under Schizophrenia.

Browse Schizophrenia studies →

Lead sponsor

Beth Israel Deaconess Medical Center is the lead sponsor of 560 studies on the registry; 80 are open to participants now.

Of its 75 completed or terminated interventional studies of FDA-regulated products, 61 (81%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
16 Years to 51 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • DSM-IV diagnosis of schizophrenia, schizoaffective or schizophreniform disorder at the time of initial assessment
  • Pre-treatment illness duration an average of 5 years, not to exceed 8 years
  • Stable positive symptoms (e.g., if present do not grossly interfere with behavior such as command hallucinations or delusions)
  • Currently maintained and compliant with prescribed antipsychotic medication
  • Socially and cognitively disabled, e.g., meet criteria on a Cognitive Style Scale (score greater than or equal to 7), and Social Cognition Disability Scale (score greater than or equal to 12).

Exclusion criteria

Exclusion Criteria:

  • Alcohol/drug abuse or dependence that has significantly interfered with adjustment in the past two months (e.g., patients currently undergoing D and A treatment must successfully complete their recovery program prior to referral)
  • Organic brain syndrome, including HIV illness (due to its effect on CNS function)
  • IQ below 80 or language skills below the sixth grade level
  • Medical contraindications that preclude an appropriate antipsychotic medication
  • Persistent suicidality
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
67 participants (actual)

Study arms

  • Experimental
    1

    Participants will receive cognitive enhancement therapy

    Behavioral: Cognitive enhancement therapy (CET)

  • Placebo comparator
    2

    Participants will receive enriched supportive therapy

    Behavioral: Enriched supportive therapy (EST)

Interventions

  • BehavioralCognitive enhancement therapy (CET)

    Using 80 to 100 hours of graduated exercises in computer assisted training, coupled with structured but unrehearsed in vivo social group interactions, CET tries to shift an early developmental reliance on effortful, serial and verbatim cognitive processing to a more gistful, less effortful and spontaneous abstraction of social themes. CET uses attention, memory and problem solving software from three exercises from Ben-Yishay's Orientation Remediation Module (the Attention Reaction Conditioner, Zero Accuracy Conditioner, and Time Estimates) that are graduated in difficulty and designed to enhance vigilance, selective attention, the ability to shift between auditory and visual modalities, and rapid decision-making.

  • BehavioralEnriched supportive therapy (EST)

    EST is the commonly recommended (Spaulding 1992) treatment for control and experimental subjects in psychosocial trials. EST is a two-staged treatment that requires weekly one-hour sessions in Phase 1 and biweekly sessions in Phase 2. Some practice principles (e.g., psychoeducation and relaxation training) are provided during the group exercises for CET patients, but individually for EST patients. No attempt is made to control for hours of contact between EST and CET, since offering three hours of supportive therapy to EST subjects is neither logistically feasible nor faithful to the goals and methods of supportive therapy. Further, neurobiological hypotheses related to treatment specificity would be best tested by clear differences in treatment intensity and content.

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What researchers measure

Primary outcomes

  1. Clinical, neuropsychological, and functional outcomes

    Time frame: Measured at Years 1 and 3

Secondary outcomes

  1. Neuroimaging parameters

    Time frame: Measured at Year 2

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Study locations

1 site
  • University of Pittsburgh
    Pittsburgh, Pennsylvania 15213, United States
08

References and documents

Publications

  • Hogarty GE. Reinventing evidence-based interventions? Psychiatr Serv. 2005 Sep;56(9):1156; author reply 1156-7. doi: 10.1176/appi.ps.56.9.1156. No abstract available. PubMed 16148337 ↗
  • Hogarty GE, Flesher S, Ulrich R, Carter M, Greenwald D, Pogue-Geile M, Kechavan M, Cooley S, DiBarry AL, Garrett A, Parepally H, Zoretich R. Cognitive enhancement therapy for schizophrenia: effects of a 2-year randomized trial on cognition and behavior. Arch Gen Psychiatry. 2004 Sep;61(9):866-76. doi: 10.1001/archpsyc.61.9.866. PubMed 15351765 ↗
  • Hogarty GE. Medication adherence studies in schizophrenia. Am J Psychiatry. 2004 Mar;161(3):581-2; author reply 582-3. doi: 10.1176/appi.ajp.161.3.581-a. No abstract available. PubMed 14992994 ↗
  • Hogarty GE. Cognitive rehabilitation of schizophrenia. Harv Ment Health Lett. 2000 Aug;17(2):4-6. No abstract available. PubMed 10927651 ↗
  • Hogarty GE, Flesher S. Practice principles of cognitive enhancement therapy for schizophrenia. Schizophr Bull. 1999;25(4):693-708. doi: 10.1093/oxfordjournals.schbul.a033411. PubMed 10667740 ↗
  • Keshavan MS, Hogarty GE. Brain maturational processes and delayed onset in schizophrenia. Dev Psychopathol. 1999 Summer;11(3):525-43. doi: 10.1017/s0954579499002199. PubMed 10532623 ↗
  • Hogarty GE, Ulrich RF. The limitations of antipsychotic medication on schizophrenia relapse and adjustment and the contributions of psychosocial treatment. J Psychiatr Res. 1998 May-Aug;32(3-4):243-50. doi: 10.1016/s0022-3956(97)00013-7. PubMed 9793877 ↗
  • Eack SM, Hogarty GE, Cho RY, Prasad KM, Greenwald DP, Hogarty SS, Keshavan MS. Neuroprotective effects of cognitive enhancement therapy against gray matter loss in early schizophrenia: results from a 2-year randomized controlled trial. Arch Gen Psychiatry. 2010 Jul;67(7):674-82. doi: 10.1001/archgenpsychiatry.2010.63. Epub 2010 May 3. PubMed 20439824 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 10, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00167362
Lead sponsor
Beth Israel Deaconess Medical Center
Collaborators
National Institute of Mental Health (NIMH)
Responsible party
Matcheri S. Keshavan MD (PI, Beth Israel Deaconess Medical Center) — Principal investigator
First posted
Sep 14, 2005
Start date
Aug 2001
Primary completion
Aug 2009
Completion
Dec 2016
Last update
Jan 10, 2017

Study contacts

Matcheri S Keshavan, MD
principal investigator · University of Pittsburgh
Gerard E Hogarty, MSW
principal investigator · University of Pittsburgh

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2017. You cannot join it, but the record below documents what was studied.

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