Adults 18 to 55, any sex, with Major Depressive Disorder. Patients with the condition only — healthy volunteers not accepted.
Results — posted to ClinicalTrials.gov
Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.
Change From Baseline in Behavior Rating Inventory of Executive Function - Adult Version Global Executive Composite T-score (BRIEF-A GEC T) at Week 9, Last Observation Carried Forward (LOCF)Primary· Baseline and week 9
BRIEF-A Global Executive Composite assesses behavioral aspects of executive function. Items are rated 1 (never), 2 (sometimes), and 3 (often). There is no range for a total score. Raw scale scores are used to generate T-scores. A reduction in score indicates less impairment.
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-21.2
± 1.67
Placebo
-13.2
± 1.66
Change From Baseline in Montgomery-Ǻsberg Depression Rating Scale (MADRS) Total Score at Week 9 - (LOCF)Secondary· Baseline and week 9
MADRS is a validated, 10-item rating scale with each item being scored on a scale from 0-6 with a total score ranging from 0-60. Lower scores indicate a decreased severity of depression.
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-5.0
± 0.66
Placebo
-3.1
± 0.66
Change From Baseline in BRIEF-A T-scores at Week 9, LOCFSecondary· Baseline and week 9
BRIEF-A is a validated 75-item questionnaire. Items are rated 1 (never), 2 (sometimes), and 3 (often). There is no range for a total score. Raw scale scores are used to generate T-scores. A reduction in score indicates less impairment.
Behavioral recognition index
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-17.4
± 1.51
Placebo
-12.3
± 1.50
Inhibit subscale
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-13.5
± 1.26
Placebo
-9.3
± 1.25
Shift subscale
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-16.2
± 1.51
Placebo
-10.6
± 1.50
Emotional control subscale
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-13.8
± 1.48
Placebo
-10.1
± 1.47
Self-monitor subscale
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-13.8
± 1.36
Placebo
-10.7
± 1.35
Metacognition index
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-21.1
± 1.67
Placebo
-12.2
± 1.66
Initiate subscale
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-19.4
± 1.57
Placebo
-10.8
± 1.56
Working memory subscale
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-20.1
± 1.65
Placebo
-11.0
± 1.64
Change From Baseline in Central Nervous System Vital Signs Computerized Cognitive Testing Battery Neurocognitive Domain and Index Scores at up to 9 Weeks/EndpointSecondary· Baseline and up to 9 weeks/Endpoint
This measures the speed and accuracy of basic mental functions. Scores are normalized from raw scores and present an age matched score relative to other people in a normative sample. Scores are normalized with a mean of 100 and standard deviation of 15. Scores \< 70 indicate likely deficit and impairment, and scores \> 110 indicate high function and capacity. Higher scores are better.
Complex information speed processing index
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
8.7
± 10.13
Placebo
3.7
± 9.02
Executive function index
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
11.0
± 14.80
Placebo
6.0
± 14.43
Neurocognitive index
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
11.5
± 17.14
Placebo
2.5
± 13.74
Percent of Participants With Clinical Global Impression - Severity of Illness (CGI-S) at BaselineSecondary· Baseline
CGI-S assesses the severity of the subject's condition on a 7-point scale ranging from 1 (normal, not at all ill) to 7 (among the most extremely ill)
Normal, not at all ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
0.0
Placebo
2.8
Borderline mentally ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
7.0
Placebo
8.3
Mildly ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
42.3
Placebo
36.1
Moderately ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
45.1
Placebo
48.6
Markedly ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
4.2
Placebo
4.2
Severely ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
1.4
Placebo
0.0
Among the most extremely ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
0.0
Placebo
0.0
Percent of Participants With CGI-S at up to 9 Weeks/EndpointSecondary· Up to 9 weeks/Endpoint
CGI-S assesses the severity of the subject's condition on a 7-point scale ranging from 1 (normal, not at all ill) to 7 (among the most extremely ill)
Normal, not at all ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
21.7
Placebo
15.9
Borderline mentally ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
40.6
Placebo
23.2
Mildly ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
20.3
Placebo
24.6
Moderately ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
14.5
Placebo
34.8
Markedly ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
2.9
Placebo
1.4
Severely ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
0.0
Placebo
0.0
Among the most extremely ill
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
0.0
Placebo
0.0
Percentage of Participants With Improvement on Clinical Global Impression-Improvement (CGI-I) at Week 9, LOCFSecondary· Week 9
Clinical Global Impression-Improvement (CGI-I) consists of a 7-point scale ranging from 1 (very much improved) to 7 (very much worse). Improvement is defined as a score of 1 (very much improved) or 2 (much improved) on the scale.
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
60.6
Placebo
38.9
Change From Baseline in Endicott Work Productivity Scale (EWPS) Total Score at up to 9 Weeks/EndpointSecondary· Baseline and up to 9 weeks/Endpoint
The EWPS quantifies work performance, productivity attitudes and behaviors assessing 25 items on a scale ranging from 0 (high performance) to 4 (lowest performance). Scores range from 0 to 100 with 100 representing lowest productivity.
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-20.4
± 2.24
Placebo
-15.9
± 2.32
Change From Baseline in Changes in Sexual Functioning Questionnaire (CSFQ-14) Total Scores for Males at Week 9, LOCFSecondary· Baseline and week 9
This is a 14 item self-report tool that evaluates sexual functioning. Each item is scored on a 5-point Likert scale ranging from 1 (never) to 5 (always) with total scores ranging from 14 to 70. Higher scores reflect better sexual functioning.
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
2.5
± 4.61
Placebo
2.4
± 5.34
Change From Baseline in CSFQ-14 Total Scores for Females at Week 9, LOCFSecondary· Baseline and week 9
This is a 14 item self-report tool that evaluates sexual functioning. Each item is scored on a 5-point Likert scale ranging from 1 (never) to 5 (always) with total scores ranging from 14 to 70. Higher scores reflect better sexual functioning.
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
2.7
± 8.47
Placebo
1.6
± 5.60
Change From Baseline in Short Form-12 Health Survey (SF-12) Scale Total Scores at Week 9Secondary· Baseline and week 9
The SF-12 is a 12-item self-report questionnaire that is a subset of the SF-36 Health Survey. The survey captures physical and mental health. Each of the 12 items is scored using various scales with a total score ranging from 0 (lowest level of health) to 100 (highest level of health).
Aggregate physical
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
-0.10
± 0.461
Placebo
-0.23
± 0.473
Aggregate mental
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
0.69
± 0.987
Placebo
0.63
± 0.807
Change From Baseline in Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q) Total Scores at up to 9 Weeks/EndpointSecondary· Baseline and up to 9 weeks/Endpoint
The Q-LES-Q is a 93-item self-report questionnaire on quality of life and health. Each item is rated on a 5-point scale from 1 (very poor) to 5 (very good) with a total score ranging from 93 to 465. Higher scores indicate greater satisfaction.
Physical health activities
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
17.9
± 20.03
Placebo
8.2
± 16.82
Overall life satisfaction
Group
Value
95% CI
Lisdexamfetamine Dimesylate (LDX)
12.1
± 25.37
Placebo
9.1
± 22.27
Adverse events — posted to ClinicalTrials.gov
Reporting threshold: 2%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
To evaluate the efficacy of SPD489 for the treatment of executive function impairments (EFI) when used as an adjunct to stable, standard therapy in the setting of partial or full remission from recurrent Major Depressive Disorder (MDD) as measured by the Global Executive Composite (GEC) T-score of the Behavioral Rating Inventory of Executive Functioning - Adult Version (BRIEF-A).
Publications & conference data
2 peer-reviewed publications reference this trial (live from Europe PMC):
Other trials of SPD489 (Lisdexamfetamine dimesylate)
Trials testing the same drug.
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Trials by the same sponsor.
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Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Shire
Last refreshed: 8 June 2021
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT00985725.