assessment of cognition in depression treatment studies
TRANSCRIPT
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Assessment of Cognition in Depression Treatment Studies
Philip D. Harvey, PhD
University of Miami Miller School of Medicine
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Disclosures
• In the past 12 months Dr. Harvey has served as a consultant for:
Abbvie, Boeheringer-Ingelheim, Forest Labs, Forum Pharma, Genentech, Otsuka-America, Roche Pharma, Sunovion Pharma, and Takeda
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How Do You Assess Cognitive Functioning?
• Performance-based tests
• Self-report
• Informant report
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Strategies for Cognitive Assessment
• Battery length and comprehensiveness varies considerably in previous research
– Extensive Batteries
• Expanded Halstead Reitan, maybe 8 hours
– Shorter Batteries
• MATRICS Consensus Cognitive Battery
– Abbreviated Batteries
• BAC;BCATS, etc.
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Advantages for Each Strategy
• Longer
– Higher Reliability
– Greater coverage (especially if you are not sure what’s impaired)
• Shorter
– Practicality
– Tolerability
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Tailoring the Assessment for Mood Disorders
• As noted in the last talk, there are several highly salient domains in mood disorders
• These include attention, executive functioning, and, importantly, processing bias
• Processing bias as a “hot” cognition domain is not covered by many NP assessment strategies
• Setting aside the issue of hot cognition, are there truly different domains of cognitive impairment in mood disorders and other areas with well validated cognitive assessments?
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Performance of First Episode Patients Compared to Normative Standards
From Reichenberg et al., 2009
-2.5
-2
-1.5
-1
-0.5
0
0.5
VerbalMemory
VisualMemory
ExecutiveFunctions
Attention Language SensoryMotor
GeneralVerbal Ability
VisualProcessing
Schizophrenia Schizoaffective Psychotic Depression Psychotic Bipolar
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Mean GDS Scores Across groups
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Mean GDS
Schizophrenia
Schizoaffective
Bipolar
Depression
Note. GDS+ Global Deficit ScoreSchizophrenia= schizoaffective>mania=depression
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Interview-Based Strategies
• Several structured inventories are developed
• Some are aimed at mood disorders in specific
• Others are aimed at schizophrenia and have been partially validated in mood disordered populations
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Very Consistent finding
• Self-reported mood symptoms, particularly in the residual state when augmentation therapy would be considered, are poorly correlated with performance-based measures
• Sometimes the correlation is 0
• The open question, however, is whether informant/observer ratings would be better
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High Contact Clinicians as Cognition Raters
0
0.1
0.2
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0.6
Patient Report Clinician Rating
Correlation between Ratings of Cognition and Objective Performance (CAI):
MCCB and SLOF Everyday Activities
Cognition Everyday Functioning
Pearson r
Bipolar depression patients; n=30
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Self reports of Functioning and Cognition in Bipolar Disorder are Driven by Depression
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What about Co-Primary Measures
• Regulatory agencies have asked for co-primary measures in AD and SCZ trials
• Both Performance-based and Interview based measures have been used
• The Performance-Based measures are typically functional capacity measures
• The FDA has allowed the use of interview-based measured aimed at functional cognition in previous studies
• These measures were reviewed in the previous section
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UCSD Performance-Based Skills Assessment (UPSA)
• Developed as a performance-based measure of everyday living skills
• Five domains
– Comprehension/Planning
– Finance
– Communication
– Mobility
– Household Chores
• Scaled to 100-point score
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Modifications of the UPSA
• UPSA-II– Medication Management added
• UPSA-VIM– Difficulty altered
• UPSA-B– Two Subtests empirically selected
• Communication• Finances
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TABS UPSA ILS CAI CGI-cog.
Shared variance (r squared) with cognitive performance
VIM Study Results Correlation with Cognitive Performance
Pearson r r2
TABS .57 .32
UPSA .67 .45
ILS .51 .26
CAI .23 .05
CGI-cog. .38 .14
UPSA > ILS > CGI-cog. CAI
TABS > CGI-cog, CAI
Note. VIM: Validation of Intermediate Measures
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Interviews vs. Performance based Co-Primaries
• Most studies use either performance-based or interview based co-primary measure
• In this study a performance-based cognitive assessment was correlated with– Self report
– Informant Report
– Interviewer impression based on two reports
– UPSA
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Correlation Between Cognition Scores, Functional Capacity, and Ratings of Impaired Cognition in Schizophrenia
0
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0.2
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Pearson r
Self- Report Informant Consensus Performance
Pearson r
Keefe et al., 2006Performance More Closely Related to Cognitive Functioning than Self-Report
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Validity in Other conditions
• The UPSA has been widely used in other conditions, including bipolar disorder and bipolar depression
• There is considerable evidence of evidence of validity in Bipolar disorder
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UPSA B Scores as a Function of Residential StatusU
PS
A-B
Sco
re
Note: Diagnostic effect: F = 0.66, p = .417;Mausbach et al., in 2010
0
10
20
30
40
50
60
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90
Residential Status
Head of Household
Community Resident
Supported Living
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NegativeSymptoms
PositiveSymptoms
PositiveSymptoms
ActivitiesR2=.53
ActivitiesR2=.39
Neuro-cognition
-.32
-.41
UPSA-B
R2=.48
.69
.35
.23 .50
.36
-.37
-.21
ManiaDepression
-.10
.11
.22
-.26
Neuro-cognition
UPSA-B
R2=.25
Depression
.29
-.14
Bowie et al., 2010
NegativeSymptoms
-.24
Schizophrenia Bipolar
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Sensitivity to Treatment for co-primary measures
• Several studies have found the UPSA to be sensitive to treatment in pharmacological studies of schizophrenia
– Davunitide
– Pregnenolone
• Similarly, interview based measures have shown sensitivity as well
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Outcomes of the Study:
End of TreatmentEffect Size (Cohen’s d)
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COG REM FAST Both
NP
UPSA
SLOF
FAST: Functional Adaptation Skills Training
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SCoRS (Visits with Informant Present)
SCoRS Interviewer Total (Subjects with Informants)
(Adjusted Mean Change from Baseline)
-8.00
-6.00
-4.00
-2.00
0.00
0 Day 28 Day 56 Day 77
Study Day
LS
ME
AN
Ch
an
ge
fro
m B
ase
line
(±S
.E.M
.)
1 mg vs. placebo:
P = 0.003
ES = 0.51
EVP-6124 0.3 mg
EVP-6124 1.0 mg
Placebo
SCORS: Schizophrenia Cognition Rating Scale
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AN, animal naming; BACS, BACS Symbol Coding; BVMT, Brief Visual Memory Test total learning;
COMP, Cognitive Performance Composite Score; HVLT: Hopkins Verbal Learning Test total learning;
LNS, Letter-Number Sequencing; LOCF, last observation carried forward. MCCB, MATRICS
Consensus Cognitive Battery; NAB, NAB Mazes Subtest; SCoRS, Schizophrenia Cognition Rating
Scale; TMT, Trail Making Test Part A; WMS, Wechsler Memory Scale Spatial Span.
Based on LOCF endpoint data.
0.17
0.29
0.060.05
0.16 0.16
0.13 0.13
0.160.160.15
0.20
0.09
0.01
0.03
0.110.12
0.09
0.00
0.05
0.10
0.15
0.20
0.25
0.30
TMT BACS AN LNS WMS HVLT BVMT NAB COMP
Lurasidone (n=150) Ziprasidone (n=151)
Effect Sizes for Pre-Post Improvement in Cognitive Measures
Eff
ect S
ize
Eff
ect S
ize
MCCB Effect Sizes SCoRS Effect Sizes
0.43
0.20
0.00
0.10
0.20
0.30
0.40
0.50
Lurasidone(n=150)
Ziprasidone(n=151)
Harvey P, et al. Schizophr Res. 2011;127(1-3):188-194.
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Uses of the UPSA Outside SCZ and BD
1. UPSA scores correlate with NP performance in healthy older controls
2. UPSA scores separate MCI from AD and HC3. UPSA scores correlate with MCCB scores and lifetime
functional outcomes in PTSD4. UPSA scores correlate with NP test scores and current
residential and vocational outcomes in schizotypal PD5. UPSA scores correlate with WCST performance in
abstinent methamphetamine abusers6. Lower UPSA Scores predict poorer response to
diabetes management programs in non psychiatric patients