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Current Approaches to
Management of Cognitive
Impairment in MS
John DeLuca, Ph.D.
Senior Vice President for Research
Kessler Foundation
West Orange, New Jersey, USA
Professor, Department of Physical Medicine & Rehabilitation
Department of Neurology
Rutgers, New Jersey Medical School
Newark, New Jersey, USA
Disclosures
• Advisory board for Biogen IDEC
• Speaker, EMD Serono
• Grant funding, Biogen IDEC
• Grant funding, EMD Serono
• Grant funding, NMSS
• Grant funding, CMSC
Overview
• Cognitive Rehabilitation
• Exercise
• Medication
Cognitive Rehabilitation
Cognitive Rehabilitation Studies
42 total studies
63% of all studies
RR and PMS Participants in Cognitive
Rehabilitation Studies
38 total studies: 4 unknown
0
10
20
30
40
50
60
70
80
90
100
Frequency Percent Progressive S’s in study
RED= RR; BLUE= Progressive
15 studies
989 persons with MS
Support effectiveness of memory intervention on:
Objective assessments of immediate and long term follow-up
QOL in immediate follow-up
Cochrane Database of Systematic Reviews 2016, Issue 3
Evidenced Based Cognitive Rehabilitation for
Persons with Multiple Sclerosis: An Updated
Review of the Literature from 2007-2016
Y. Goverover, N.D. Chiaravalloti, A. O’Brien, J. DeLuca
ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION
(2017), doi: 10.1016/j.apmr.2017.07.021.
Classified studies on level of evidence based on AAN criteria for therapy trials
Yielded 40 studies (2007-2016)
contrasts with 16 studies (ALL prior years)
Results:
1 Practice Standard Learning/Memory
2 Practice Guidelines Attention, nonspecific tx
5 Practice Options Learning/Memory; Attention
Goverover et al (2017) Archives Physical Medicine & Rehab
# of studies 40 16
Class I 6 (15%) 4 (25%)
Class II 9 (23%) 5 (31%)
Class III/IV 25 (63%) 7 (44%)
2007-2016* All years prior 2007**
Vast majority of all studies are positive
**O’Brien et al (2008) Archives Physical Medicine & Rehab
* Goverover et al (2017) Archives Physical Medicine & Rehab
Cognitive Rehabilitation: Behavioral Approaches
Sample RCT results
Computer-assisted rehabilitation of
attention in patients with multiple
sclerosis: results of a randomized
double blind trial
M.P. Amato1 , B. Goretti1, E. Portaccio1, R.G. Viterbo2, P.
Iaffaldano2, M. Trojano2
1Department of Neurological and Psychiatric Sciences, University of Florence,
Italy 2Department of Neurological and Psychiatric Sciences, University of Bari,
Italy
Amato et al., 2014, MSJ
Attention Training RCT
• OBJECTIVE: To assess efficacy of a
computerized program for retraining
of impaired attention in MS
• Multicenter RCT (n=88)
• RR only – (impaired on attention)
• Randomly assigned to:
– Specific computerized training (SCT)
– Aspecific computerized training (ACT)
• Class I evidence
Amato et al., 2014, MSJ
PASAT Results
ACT
SCT
ACT
SCT
Effect for Time: F=12.19; p<0.001
Effect for Time*Group; F=6.50; p=0.002
Effect for Time: F=21.6; p<0.001
Effect for Time*Group; F=7.37; p=0.001
Amato et al., 2014, MSJ
SCT
ACT
Effect for Time: F=11.43; p<0.001
Effect for Time*Group; F=2.67; p=0.072
There was no significant
effect of the SCT on the other
neuropsychological tasks
(p>0.12)
SDMT Results
Amato et al., 2014, MSJ
Learning and Memory
• RCT examine efficacy self-generation learning program (self-GEN trial) in MS
• 6-session behavioral intervention teaching self-generation techniques to
improve learning and memory in persons with MS
• 35 learning and memory impaired MS randomized:
• treatment group (n=19)
• Active placebo control (n=16)
• Class I evidence
Goverover et al, (2017), MSJ
Change pre to post with Self-Gen treatment program
p<.002 p<.03
MIST: Prospective memoryCMT- contextual memory test
Goverover et al, (2017), MSJ
Change pre to post with Self-Gen treatment program
p<.003 p<.02
FAMSFBP
Goverover et al, (2017), MSJ
Memory Retraining in MS
• 86 participants with MS– with objective impairment in new
learning• Method
– Random assignment into two groups:•memory retraining group•control group
– Double blinded conditions
Chiaravalloti et al, 2013, Neurology
Learning by Group: Post-treatment*
CVLT Learning Trials
p=.02, controlling for baseline* No significant groupdifference at baseline
Everyday Life Self-Report
Chiaravalloti et al., Neurology, 2013
56
58
60
62
64
66
68
70
Baseline Immediate Follow-up
FAMS General Contentment FrSBe Total Score, Family Form
Brain changes after behavioral treatment for memory impairment
in MS using fMRI
Changes in Brain Functioning in MS
• Pre-training
• Treatment minus control
• Post-training
• Treatment minus control
Increased activation in frontal and occipital regions in treatment group that is not evident prior to treatment (p<.05)
Chiaravalloti et al., 2012, J Neurol
BOLD activation change from pre- to post-treatment
Chiaravalloti et al., 2012, J NeurolMS – red
HC - blue
parahippocampal gyrus superior temporal gyrus
BOLD activation change from pre- to post-treatment
Chiaravalloti et al., 2012, J NeurolMS – red
HC - blue
middle frontal gyrus precuneus
Increased connectivity from
L Hippocampus to Insula
bilaterally in treatment group
after TX
Increased connectivity from
R Hippocampus to cluster
comprised of:
- L post-central gyrus
- precentral gyrus
- middle frontal gyrus
- cingulate gyrus in tx groupRed line tx; blue line controls
Resting state functional connectivity following cognitive rehabilitation in MS
Leavitt et al, Brain Imaging and Beh, 2012
6 month follow-up
Behavioral Performance
6
7
8
9
10
11
12
13
14control groupmean
treatment groupmean
Pre-
intervention
Post-
intervention
6 months
Post-intervention
CV
LT
S
DF
R P
erf
orm
ance
Dobryakova et al., 2014
MTLOccipital
Gyrus
Rz = -6R
MFG
IPL
x = -33
Area more activate in
the treatment group
vs control group
during memory
encoding
Occipital
GyrusMTL
Rz = 1 MFG
A
x = -42
A
post-intervention x 6months
post-intervention
Brain areas activated in association with encoding
pre-intervention x
post-intervention
Dobryakova et al., 2014
Executive Functions and
Attention
• computer-based intervention (RehaCom) for attention, PS
& EF in RRMS
• 20 RRMS randomized into Treatment vs control:
• Pre (T0) and post (T1) Neuropsych testing
Mattioli et al (2010), J of Neurol Sci
TG: RehaCom cognitive rehabilitation for 12 weeks (1 hr
session, 3 days a week).
CG: no rehabilitation.
Filippi et al, Radiology, 2012
Increased Dorsolateral
PFC bilaterally in
Treatment group after
treatment
MR changes following Cognitive Rehabilitation
In treatment group,
Functional MR changes
Correlated with cognitive
improvement
No structural MR changes
In GM volume or NAWM
observed with treatment
TG ONLY: Increased FC of ACC with:
R MFG
R IPL
correlated with PASAT
CG ONLY: decreased FCC of ACC with
R cerebellum
R ITG
No correlation with cognition
Functional connectivity following Cognitive Rehabilitation
RehaCom – computer-based cognitive rehabilitation. Sessions:
Attention and concentration
Plan a day
Divided attention
reaction behavior
Logical thinking
Cog impaired RR assigned to cog rehab (n=18) or control (n=18)
8 weeks TX, 2x per week
Pre-post RS-FC and structural imaging (brain volume; lesion load)
NO significant pre-post differences on NP in control group
NO significant pre-post differences in brain volume or lesion load in either group
Bonavita et al (2015) J of Neurol
Bonavita et al (2015) J of Neurol
RS-DMN F-connectivity increased
In PCC and inferior parietal cortex
In Treatment group only
RR with impaired PS, attention, WM or EF
assigned to cog rehab (n=12) or control (n=11)
6 weeks TX, 2x per week
Pre-post fMRI during PVSAT; Lesion load
RehaCom – computer-based cognitive rehabilitation.
Sessions:
Attention and concentration
Divided attention
Vigilance
Stroop Performance
Cerasa et al (2012), Neurorehab & Neural Repair
Tx group vs control showed:
Increased activation in
L posterior parietal cortex
R posterior cerebellar lobule
(group x time interaction)
Cerasa et al (2012), Neurorehab & Neural Repair
A RCT COMPARING SPECIFIC INTENSIVE COGNITIVE
TRAINING TO ASPECIFIC PSYCHOLOGICAL
INTERVENTION IN RRMS: The SMICT study
• 10 MS Centers in Italy
• 45 RRMS randomized:
– specific training (attention/PS or memory or EF) (rehacom)
– aspecific function (psychological intervention)
• Cognitively impaired (at least 1 test of BRB battery:1.5 sd <norm)
• All S’s prescribed interferon beta 1A
• 4 months tx: two 60 min sessions per week
• Outcome: assessment at 1 year on:
– NP battery
– depression (MADRS)
– QOL (MSQoL)
Mattioli et al (2015), Frontiers in Neurology
Cognitive Change from baseline to 1 year:(no group difference on Executive functions, Depression, QOL)
30
35
40
45
50
baseline 1 year
Aspecific
Specific
30
35
40
45
50
baseline 1 year
Aspecific
Specific
10
15
20
25
baseline 1 year
Aspecific
Specific
10
15
20
25
30
35
baseline 1 year
Aspecific
Specific
PASAT 3” SDMT
SPART 10/36 SRT CLTR
Mattioli et al (2015), Frontiers in Neurology
Improvements maintained at 2 years in:
PS
verbal memory
visual memory
24 MS cognitively impaired RRMS randomized to:
Tx: home-based computerized intervention
wait list control
NP testing
RS MRI
Looking at Thalamic RSFC
De Gilio et al (2016), Radiology
Thalamic RS network is disrupted in MS
Decreased cognitive performance associated with increased
thalamocortical connectivity
Maladaptive plasticity
– unable to compensate for tissue damage to prevent cognitive impairment
Home-based cognitive rehabilitation using the internet
Double blind, randomized, active placebo controlled trial
135 MS randomized (all with cognitive impairment)
adaptive online cognitive training n=74
ordinary computer games n=61
Training was remotely delivered and supervised
60 hours over 12 week
Primary outcome:
neuropsychological composite score
Results: significant improvement in Tx group
Class I evidence
Change from pre to post assessment
0
0,1
0,2
0,3
0,4
0,5
0,6
0,5
0,55
0,6
0,65
0,7
0,75
0,8
0,85
0,9
pre post
tx ctl
Mean NP composite z-score Mean rating cognitive improvement
p<.007p<.029
Charvet et al, (2017) PLOS ONE
Evaluate a cognitive rehabilitation ”App” in cognitively impaired MS
“COGNI-TRAcK” – Cognitive Training Kit
For portable devises
28 cognitively impaired MS randomized to:
ADAT-gr: adaptive training – automatic adjustment of task difficulty
CONST-gr: trained at a constant difficulty level
Based on working memory exercises
8 weeks, five 30-min sessions per week
Self-administered at home
Cognitive Rehabilitation and Cognition in MS
• Conclusions– Consistent data to support effectiveness
• Neuropsychological performance
• Functional neuroimaging support
• Future studies– Design studies to look at everyday life
– More studies on long term outcomes
• Ready for clinical practice– Paucity of adequately trained clinicians
Cognitive Rehabilitation in MS
It works!
Exercise
Exercise and Cognition in MS
• Can Exercise training improve cognition in MS?
– understudied
• Well-established literature in the general population across the lifespan
• Of the existing MS studies
– most are not RCTs
– suffer from significant methodological flaws including• small sample sizes
• poorly-defined interventions
• lack of adequate control groups
• inclusion of cognition as a non-primary outcome
Sandroff, 2015, Neuroscience and Biobehavioral Reviews
Exercise Training and Cognition in MS
• Inconsistent evidence from 5 RCTs of exercise training and cognition in MS:5-9
• Not in-line with literature from the general population on exercise and cognitive function10
• Methodological concerns of MS RCTs
• Need to considering Class II, III, and IV evidence for informing better RCTs (i.e., for
better prescribing exercise training)11,12
5 Oken et al., 2004; 6 Romberg et al., 2005; 7 Briken et al., 2014; 8 Carter et al., 2014; 9 Hoang et al.,2016; 10 Voss et al., 2011; 11 Sandroff, 2015; 12 Sandroff et al., 2016
Sandroff, In Press
1 2 3 4
Sandroff, In Press
Sandroff, In Press
32 MS
16 cognitive Rehab + aerobic exercise
16 aerobic exercise only
6 week intervention
Pre and post neuropsychological testing (BRB)
Results:
Combined group improved significantly more than exercise alone
Cognitive Rehab + Exercise Study
25
27
29
31
33
35
37
39
Cog Reh + Exer Exer
SDMT
23
25
27
29
31
33
35
37
39
41
Cog Reh + Exer Exer
Stroop - Interference
10
12
14
16
18
20
22
Cog Reh + Exer Exer
SPART 10/36
4
4,5
5
5,5
6
6,5
7
7,5
8
Cog Reh + Exer Exer
SPART -Delay
XXXX - pre tx
XXXX – post txJimenez- Morales et al (2017) Rev Neurol
RCT with MS S’s with substantial MS-related mobility disability
EDSS between 4 and 6
Multimodal exercise training
83 MS subjects
43 treatment (aerobic, resistance, balance exercise)
40 active control (minimal exercise: stretching, toning)
6 months or training
Assessment: pre, 3 months, post
Primary outcome: mobility, gait, fitness
Exploratory outcome: Processing speed (SDMT, PASAT)
study not powered on cognition
Intention to treat analysis n=62
PASAT 3” SDMT
p<.05 ns
Sandroff et al (2017) Contemporary Clinical Trials
Exercise and Cognition in MS
• Conclusions– No conclusive data to support effectiveness
• Exercise
• Physical activity
• Physical fitness
• Future studies– Improve methodology
– Design studies to look specifically at cognition
– Replication is required
Pharmacological Approaches
Pharmacological Approaches
• In principle, DMTs potentially improve
cognition
– approved DMTs reduce T2 & T1 brain lesions
– some reduce the progression of brain atrophy
– decrease of inflammatory activity may
contribute to better cognitive performances
• Symptomatic drugs may have specific
effects
• Review RCT’s
Pharmacological Approaches• Methodological problems in DMT RCT’s
– cognition a secondary or even a tertiary outcome
– explorative outcome often single cognitive test
– patients’ cognitive status not an entry criterion
– studies not powered on cognitive parameters
• not appropriate to detect cognitive changes
• observational studies on DMT studies
– vast majority are non-randomized
– small samples with different clinical characteristics
– heterogeneous cognitive assessment tools and outcome
measures
• Results must be viewed with caution
Interferon-beta 1a and 1b
Design Support
BetaseronPliskin et al, 1996
30 MS
placebo vs
control
NO
(1/13 NP yes).
Control problems
BetaseronSheby et al 1998
167 MS
placebo vs
control
NO
AvonexFischer et al 2000
166 MS
placebo vs
control
YES, cog
secondary
outcome
Acetylcholinesterase Inhibitors
Design Support
Physostigmine
Leo & Rao 1988
Crossover RCT
8 MS
YES
Donepezil
Greene et al 2000
17 cog impaired MS ? No placebo
control
Donepezil
Krupp et al 2004
RCT 69 MS YES
Donepezil
Krupp et al, 2011
RCT 120 MS NO
Rivastigmine
Cader et al, 2009
Single blind crossover
15 MS
NO
Rivastigmine
Shaygannejad et al 2008
RCT 60 MS NO
Design Support
Copaxone
Weinstein et al, 1999
NO
Copaxone
Schwid et al, 2007
153 RCT, 10 yr follow-up NO
L-amphetamine
Benedict et al, 2008
19 MS counterbal
within-Subjects
YES
L-amphetamine
Morrow et al, 2009
151 RCT NO primary outcome
YES secondary
outcome
L-amphetamine
Sumowski et al, 2011
136 RCT YES
Ginkgo biloba
Lovera et al, 2007
39 MS RCT NO
Amantadine
Geisler et al, 1996
45 MS parallel group NO
Other Agents and Cognition
Design Support
Memantine
Villoslada et al, 2009
19 MS RCT, crossover worsening
Memantine
Lovera et al, 2010
126 MS RCT, double blind NO, Increased fatigue &
psych symptoms
Memantine
Peyro Saint Paul, 2016
93 MS RCT NO
Tysabri (Natulizumab)
Mattioli et al, 2011
24 MS quazi-controlled
(Disease severity not matched)
YES
1 year follow-up
Other Agents and Cognition (cont)
Some uncontrolled observational studies have suggested an effect with Natulizumab
Kunkel at al, 2015
Iaffaldano et al, 2012
Pharmacology and Cognition in MS
13 7
No Support Support
Pharmacology and Cognition in MS
Support
Interferons 1 of 3
Acetylcholinesterase
Inhibitors
2 of 6
L-amphetamine 2 of 3
Other agents 2 of 8
Pharmacology and Cognition in MS
• Conclusions– No consistent data to support effectiveness
• DMT’s
• Symptomatic
• Future studies– Design studies to look specifically at cognition
– Replication is required
Overall Conclusions
• Cognitive rehabilitation shows most consistent– Future studies
• Long term effects?
• Impact on everyday life?
• Exercise shows some promise– More studies are required
• No consistent support for pharmacological interventions
What is Needed?
• Improved methodology
• Most studies with RRMS
• More Class I studies
– Active control groups
• Larger samples
• Examine impact on everyday life
• Rehab works for:
– Whom? What? How? When? Dosage? (boosters)
• Multidimensional approach to research and treatment
– Cognitive, medication, exercise
AcknowledgmentsNancy Chiaravalloti, Ph.D.
Yael Goverover, Ph.D.
Jean Lengenfelder, Ph.D.
Glenn Wylie, D.Phil
Nancy Moore, M.S.
James Sumowski, Ph.D.
Victoria Leavitt, Ph.D.
Brian Sandroff, Ph.D.
Thank You
Video Games and Cognitive Rehabilitation
– Can I tell my client to use “brain games” or
“video games” for cognitive rehabilitation?
“A Consensus on the Brain Training Industry… “, accessed (April 29, 2015), http://longevity3.stanford.edu/blog/2014/10/15/the-consensus-on-the-brain-training-industry-from-the-scientific-community/
“We object to the claim that brain games offer consumers a scientifically grounded avenue to reduce or reverse cognitive decline when there is no compelling scientific evidence to date that they do.”
75 Leading Cognitive Psychologists & Cognitive Neuroscientists Representing 48 Universities
Lumosity to Pay $2 Million to Settle FTC Deceptive
Advertising Charges for Its “Brain Training” Program
• “Lumosity preyed on consumers’ fears about age-related cognitive decline, suggesting their games could stave off memory loss, dementia, and even Alzheimer’s disease, But Lumosity simply did not have the science to back up its ads.”
• Lumosity claimed that training would:– 1) improve performance on everyday tasks, in school, at work,
and in athletics
– 2) delay age-related cognitive decline and protect against mild cognitive impairment, dementia, and Alzheimer’s disease
– 3) reduce cognitive impairment associated with health conditions, including stroke, traumatic brain injury, PTSD, ADHD, the side effects of chemotherapy, and Turner syndrome, and that scientific studies proved these benefits.
https://www.ftc.gov/news-events/press-releases/2016/01/lumosity-pay-2-million-settle-ftc-deceptive-advertising-charges
Federal Trade Commission Press release, 1/6/2015
Exercise, Physical Activity, Physical Fitness are Different Constructs
• Exercise, physical activity, & physical fitness often considered a single construct, when by definition, they are related, but separate
• physical fitness refers to an attained set of attributes (i.e., cardiorespiratory fitness, muscular strength, balance, body composition) that relates to the ability to perform physical activity
• Exercise: refers to planned, structured, and repetitive bodily movement done to improve or maintain one or more components of physical fitness
• physical activity refers to any bodily movement produced by skeletal muscles that results in energy expenditure
American College of Sports Medicine (ACSM), 2013