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Microsoft word - hip 2013 11 15~submitted

1. Cover Page
a)
Preliminary study grant
b)
D-Cycloserine and virtual reality exposure therapy delivered on an iPad: Increasing access to treatment for
social anxiety disorder
c)
Page Anderson, Ph.D.,
Associate Professor of Psychology and Neuroscience
Chair and Director of Clinical Training, Clinical Psychology
Georgia State University
panderson@gsu.edu
Barbara Rothbaum, Ph.D.
Professor of Psychiatry and Behavioral Sciences
Associate Vice Chair of Clinical Research
Emory University School of Medicine
brothba@emory.edu
Kerry Ressler, MD, Ph.D.,
Professor of Psychiatry and Behavioral Sciences
Emory University School of Medicine
Co-Director, Trauma Clinic, Fulton County Behavioral Sciences
Investigator, Howard Hughes Medical Institute
kressle@emory.edu
Josh Spitalnick, Ph.D., ABPP
Director of Clinical Services
Virtually Better
Spitalnick@virtuallybetter.com
e)
$25,000 (direct cost).
2. Abstract: The proposed project aims to increase accessibility of exposure therapy, an evidence based
treatment for social anxiety disorder, by adapting a therapist-assisted computer-based program to be delivered
in a self-guided manner on an iPad. A significant problem with self-guided treatment delivered via computer is
compliance. The vast majority of users do not complete treatment, so achieving therapeutic benefit as quickly
as possible is essential. D-cycloserine is a drug found to augment response to therapist-guided exposure
therapy for anxiety disorders, but has never been tested with self-guided exposure. This study uses a
randomized, double-blind methodology to compare D-cycloserine (50 mg; DCS) to placebo in combination with
self-guided virtual reality exposure therapy (VRE) delivered via iPad to treat social anxiety disorder. The
proposed study tests the hypothesis that patients who receive DCS in combination with the self-guided VRE
will show more improvement than those who receive placebo in combination with VRE. Outcome measures
include self-reported symptoms of social anxiety, behavioral avoidance, and diagnostic remission. Participants
(N=34) are adults with a primary diagnosis of social anxiety disorder. Participants will complete a structured
diagnostic interview, standardized self-report measures of social anxiety, and a behavioral avoidance task (i.e.,
giving a speech) and will be assessed at pre-treatment, at post-treatment and at 3 month follow-up.
Hierarchical linear regression and chi-square analyses will be used to test differences between those
randomized to DCS versus placebo on the following outcomes: post-treatment scores of self-reported social
phobia symptoms, willingness to and anxiety while giving a speech at post-treatment, and diagnostic remission
at 3 month follow-up. The proposed project combines technological advances with translational research to
develop an innovative and accessible treatment for those with social anxiety disorder. The pilot data generated
from this study will be appealing to a variety of funding agencies, including the National Institute of Mental
Health’s call for exploratory clinical trials of novel interventions for mental illnesses, the Patient-Centered
Outcomes Research Institute’s call for effectiveness studies aimed to overcome barriers to treatment, and the
National Science Foundation’s call for innovation-technology translation research.

Background:
Social Anxiety Disorder (social phobia) is the most common psychiatric disorder in the US. It
negatively impacts health-related quality of life, educational and economic achievement, and it leads to
attempted suicide in as many as 21% of affected individuals1,2. A critical barrier to progress in reducing the
negative impact of this disorder is that 75-92% of sufferers do not receive treatment2. Social phobia self-help
programs delivered via computer are designed to increase access to treatment and can be effective3.
Compliance and completion rates of such programs are, however, quite poor4, greatly limiting their impact and
accessibility. Furthermore, self-help programs for social phobia do not directly administer a critical component
of treatment - exposure therapy. The direct administration of self-guided exposure therapy, using virtual reality
is an innovation that would increase the accessibility and impact of computer delivered treatment.
Exposure therapy is based on well-researched fear extinction learning paradigms, where individuals confront
what they fear in a therapeutic manner and learn that the feared outcome will not occur5. Ressler et al’s
groundbreaking translational research showed that D-cycolserine (DCS), an analogue of D-alanine and a
partial agonist at the NMDA receptor, facilitates the process of fear extinction. DCS is different from other
pharmacological agents used to treat social phobia which are prescribed chronically (daily) over a period of
months or years to maintain a therapeutic dose; one pill of DCS is taken immediately before exposure therapy
sessions. This work sparked a flurry of research showing that DCS augments exposure therapy for a variety of
anxiety disorders; people who take DCS show benefit from therapist-assisted exposure therapy more quickly
than those who take placebo6. Two randomized double-blind, placebo-controlled studies of social phobia
conclude that the combination of DCS and therapist-assisted exposure therapy improves treatment response
when participants complete fewer exposure sessions7,8. The ability of DCS to speed up the response to
exposure therapy is especially valuable for sufferers using self-guided treatment, because they are not
generally compliant with the full exposure protocol. The combination of DCS and self-guided exposure therapy
would increase access to effective treatment. The use of DCS with self-guided exposure, however, has never
been tested.

Specific Aims

1. Adapt an existing computer program to deliver self-guided VRE for social phobia via iPad, and 2. Test the comparative efficacy of DCS vs placebo plus self-guided VRE. Hypothesis: Participants who receive self-guided VRE plus DCS will show less self-reported social anxiety
and less avoidance during a laboratory based behavioral test following a 5-week intervention than those who
received self-guided VRE plus placebo.
Innovation & Impact
We seek to shift current clinical practice in the treatment of social phobia so that more people with the disorder
receive exposure therapy. We will improve access to evidence-based treatment for social phobia with delivery
of exposure via a computer – a modality that capitalizes on the fact that people with severe social phobia
spend extensive hours on the computer9; exposure therapy can come to people with social phobia “where they
are.” We also will be the first to test the delivery of exposure therapy on an iPad. We improve the approach of
existing research on computer-delivered programs for social phobia by testing how treatment affects real
behavior - existing research has relied exclusively on self-report measures and assessment of diagnostic
status. No studies have assessed actual behavior – either in the lab or in the real-world. This study will improve
scientific knowledge by answering the question of whether or not DCS augments self-guided exposure therapy.
The combination of a self-help program with DCS addresses many of the obstacles to treatment with therapist-
guided exposure therapy. For example, there are not enough mental health providers trained in exposure
therapy. Furthermore, social anxiety disorder is characterized by the fear and avoidance of social situations,
and psychotherapy is inherently a social encounter. The effective combination of DCS and self-guided virtual
reality exposure is an avenue for treatment to any sufferer with access to a computer and a prescribing
physician. When the proposed aims are achieved, an innovative treatment will exist that did not before – self-
guided VRE delivered via computer.
Preliminary Studies & Feasibility:
The investigative team represents collaborators across
academic institutions and disciplines, including a partnership
with a State of Georgia incubated a small business. We are
well positioned to complete the proposed project. Our team
has extensive experience testing the use of virtual reality
exposure for the treatment of social phobia, including in an
open study (N=10) and a randomized clinical trial (N=75)10.
We developed and tested a self-help program delivered via
computer, with minimal therapist support11. The self-help program was tested in a small (N=10) uncontrolled
trial of 8 sessions, and results showed decreases in scores on standardized self-report measures of social
anxiety from pre- to post-treatment and follow-up. Large effect sizes were observed at post-treatment (d =
1.22-1.53) and follow-up (d = 1.41 - 2.39).
Using standardized measures of software usability, participants described the program as easy-to-use, including a participant who had never before used a computer11. Since this study, the program has been updated with new virtual environments, as well as shortening the treatment down. The proposed project will adapt an existing program for delivery via a tablet and to collect data via the computer. Finally, the investigative team completed a double-blind, placebo controlled trial that tested the combination of DCS vs placebo combined with therapist-guided VRE for specific phobia12.
In summary, the team has worked together to develop and test VRE for social phobia, recruited and retained
clinical samples of adults with social phobia and retained them through follow-up. They have also worked
together to test the combination of DCS and VRE for people with anxiety disorders. Thus, the investigative
team is well-positioned to complete the specific aims of adapting a computer program that delivers self-guided
exposure therapy for social phobia via a tablet and testing following hypothesis: Participants who receive self-
guided exposure therapy plus DCS will show less self-reported social anxiety and less avoidance during a
laboratory based behavioral test following a 5-week intervention than those who received self-guided exposure
therapy plus placebo.
Methodology
The proposed research uses a randomized, double-blind, placebo-controlled, parallel-group methodology to
compare two treatments: DCS and placebo in combination with self-guided VRE delivered on a computer.
Participants: Participants will be 34 (17 per condition) adults meeting criteria for a DSM-V primary diagnosis of
SAD that includes public speaking fears recruited from the community, using public service announcements,
referrals from the community, and advertisements. Other inclusion/exclusion criteria include:

Inclusion Criteria:

Exclusion Criteria:
Understand and provide written informed consent prior to Participation in clinical trial within the past 12 months or treatment with DCS in a previous study Be able to communicate in English with study personnel History of mania, schizophrenia, or other psychoses Be able to manipulate the computer interface to interact with Any unstable medical condition; Seizure disorders, with the exception of a childhood history of isolated, non-recurrent febrile seizures If female, must have a negative pregnancy test prior to Current or past substance (except nicotine, caffeine) treatment and be maintained on an acceptable method of or alcohol dependence based on DSM-V criteria If using psychotropic medication, stable on medication and Liebowitz Social Anxiety Scale (LSAS) score of < 50
Clinician Administered Measure:
Structured Clinical Interview for the DSM-IV Axis I Disorders – Patient Edition (SCID I/P)13. The SCID will be administered to determine eligibility status and the diagnostic status of a variety of Axis I conditions falling within the mood, alcohol/substance use, and anxiety disorders modules. Twenty percent of administered SCIDs will be rated by an independent rater to establish inter-rater reliability.
Self-report Measures of Social Anxiety, Depression, Disability, Quality of Life, and Improvement:

The Liebowitz Social Anxiety Scale-self report version (LSAS-SR)14 is the primary outcome measure for the study. The LSAS-SR measures fear in and avoidance of 24 social situations, demonstrates good psychometric properties15,16. The Social Phobia Scale and Social Interaction Anxiety Scale17 are secondary measures of social anxiety, assessing fears of being scrutinized during performance situations and the cognitive, affective, and behavioral reactions to social interactions, respectively. Depressive symptoms will be tracked using the Patient Health Questionnaire-9-item18. The Sheehan Disability Scale19 assesses functional impairment across work, social life, and family life, and the Quality of Life Inventory assesses the degree of satisfaction across important life domains. The Clinical Global Improvement Scale, Patient Report 20 is a face valid self-report global measure of improvement. All self-report measures show good psychometric properties when administered via the computer 21.
Behavioral Avoidance Tests (BAT):

Participants will complete two social interaction tasks. The Unstructured Conversation Task22 and an Impromptu Speech Task23. In each task, participants will rate their anxiety using a 9-point Likert scale (0= no distress to 8=extreme distress). The assessments will be video recorded and the amount of eye contact and time spent speaking by participants will be rated by research assistants who are blind to condition. Interview /
Double-blind
Screening
treatment period
treatment
Study Day
Demographics, Medical Hx, Inclusion/Exclusion Administer study drug, assess adverse events Treatment: Participants in both conditions will complete self-guided VRE11 administered completely by
computer (with no clinician contact) for exposure. Treatment will consist of 5 weekly visits. The first visit will
last 60 minutes and will be off study medication. The participant will be familiarized with computer, and the self-
help program will introduce the basic treatment rationale, psychoeducation about social phobia and anxiety
management techniques. Participants will be randomly assigned to treatment condition after the first session.
The next four visits will be 30-minute exposure sessions, an “underdosing” of exposure therapy24. A
predetermined fear hierarchy will be used such that participants will start with less threatening social situations
(i.e., small setting with friendly people vs. a large bored audience) which will be controlled by the computer
program. Participants will complete all treatment sessions alone on the computer in a laboratory room. They
will be asked to complete only one session at a time during each visit and remain in the room for a standard
length of time (30 minutes for each exposure session).

Medication:
Participants will be randomized in a double-blind fashion (using a computer-generated
randomization code) to receive a single oral 50-mg dose of DCS or placebo 30 minutes prior to each exposure
session (four total doses). This dosage and timing is based on previous studies utilizing DCS to enhance
exposure therapy7,12,25. Study medications will be administered in the clinic supervised by study personnel to
ensure compliance. DCS shows excellent central bioavailability, reaching peak cerebrospinal fluid levels within
1 to 2 hours, and is primarily excreted renally with a half-life of 10 hours. No significant adverse effects have
been described in any of the recent clinical studies examining DCS for cognitive enhancement6.

Data Analysis:
To test the hypothesis that participants who receive DCS in combination with VRE will improve
more than participants who receive placebo in combination with VRE, a hierarchical regression model will be
used to compare post-treatment scores on the primary outcome measure (LSAS-SR) between groups. Pre-
treatment scores will be entered in the first block as a covariate. A coded variable representing treatment group
will be entered in the second block. A power analysis assuming power of .8 and a significance level of .05 and
using estimated effect sizes from prior work comparing DCS to placebo6,12 and our own work with VRE11,
yielded a recommended sample size of N=34 for these analyses.
Another primary outcome is willingness to complete the behavioral avoidance test at post-treatment, which will be compared across treatment groups using Chi square analysis. Analysis of variance will be used
to compare differences in anxiety ratings at post treatment and follow-up. Secondary analyses will examine the
proportion of participants achieving remission, defined as LSAS total score  30 and the proportion of
participants who no longer meet criteria for social anxiety disorder across groups at 3 month follow-up, as
defined by the SCID.

Potential for External Funding
The proposed project’s technological innovation and aim to improve accessibility of an effective treatment to an
underserved population is in line with current missions of external funding institutions. Potential funding
mechanisms include: the National Institute of Mental Health (NIMH)’s call for exploratory clinical trials of novel
interventions for mental illnesses, http://grants.nih.gov/grants/guide/notice-files/NOT-MH-13-022.html and the
Patient-Centered Outcomes Research Institute (PCORI)’s call for effectiveness studies aimed to overcome
barriers to treatment, http://www.pcori.org/funding-opportunities/funding-announcements/addressing-
disparities-spring-2014-cycle/ . The proposal’s partnership with a small business concern is relevant to the
National Science Foundation (NSF)’s call for innovation-technology translation research,
http://www.nsf.gov/pubs/2013/nsf13575/nsf13575.htm.

Budget Justification:
Equipment: $1200
IPads ($500) with protection plan ($100) for a total of $600/each. One tablet will be used for development and support purposes. Two tablets will be used for data collection – one of which will be purchased by Georgia State University as a cost sharing measure. One of these tablets will be raffled to a participant completing the follow-up. 50mg DCS or placebo, 4 doses per participant ($1050) and 20 urine pregnancy tests ($250) Advertising in local media outlet for study participants ($1000) and participant payment ($1700), $50 for completion of treatment To reimburse participants for study session visits ($5.00/pass) To assume day-to-day responsibility for coordination of the study. Study assessments and treatment will be conducted by doctoral level clinical psychology graduate students within Dr. Anderson’s lab.
Matching/Cost sharing:
Georgia State University: $6600
Georgia State University will pay $6000 in graduate student support for this study. These funds will be combined with the $1500 allocated in the proposed budget to ensure sufficient support for the day-to-day running of the study. Georgia State University will purchase the iPad with technical support to be used for the intervention (~600) Virtually Better is matching $ 9,000 in development cost. The cost of adapting the software for use on a tablet is approximately $27,000; we have allocated 2/3 of the cost in the budget and VBI will cost share the rest. References
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Source: http://hip.emory.edu/documents/seedgrants_round5/r5proposals/Anderson.pdf

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