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A 6-Month Open-Label Extension Study to the B2061014 Study to Evaluate the Safety, Tolerability and Efficacy of DVS SR in the Treatment of Children and Adolescents With MDD

A 6 Month, Open Label, Multi Center, Flexible Dose Extension Study To The B2061014 Study To Evaluate The Safety, Tolerability And Efficacy Of Desvenlafaxine Succinate Sustained Release (Dvs Sr) Tablets In The Treatment Of Children And Adolescent Outpatients With Major Depressive Disorder

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01371721
Enrollment
269
Registered
2011-06-13
Start date
2012-02-29
Completion date
2015-10-31
Last updated
2017-02-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Major Depressive Disorder

Keywords

Major Depressive Disorder, MDD, Depression

Brief summary

This is a 6-month, open-label, flexible-dose study evaluating desvenlafaxine succinate sustained release (DVS SR) in the treatment of child and adolescent outpatients with major depressive disorder (MDD).

Interventions

DRUGDVS SR

Subjects will receive a flexible-dose of 20, 25, 35 or 50 mg/day as prescribed by the investigator.

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
7 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

* Completed study B2061014 and who in the investigator's opinion would benefit from long term treatment with DVS SR * Willingness and ability to comply with scheduled visits, treatment plan and procedures

Exclusion criteria

* Subject requires precaution against suicide * Subject not in a generally healthy condition

Design outcomes

Primary

MeasureTime frame
Percentage of Participants Experiencing a Treatment Emergent Adverse EventWeek 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 Study

Secondary

MeasureTime frameDescription
Change From Baseline at Week 26 in the Children's Depression Rating Scale, Revised (CDRS-R) Total Score Based on Observed CasesWeek 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 StudyClinician-rated interview-based scale (with both child and parent or guardian) to assess 17 distinct symptom areas to derive an index of depression severity. Discrepancies between informants' responses were resolved by using most impaired rating given by valid informant. Rated on a 7-point scale; range from 1 (no impairment) to 7 (indicates greater impairment). Total score calculated as sum of the 17 items (range 1 to 119); higher score indicates greater impairment. Adjusted mean presented.
Change From Baseline at Week 26 in the Clinical Global Impression of Severity (CGI-S) Score Based on Observed CasesWeek 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 StudyA 7-point clinician rated scale to assess severity of participant's current illness state; range: 1 (normal - not ill at all) to 7 (among the most extremely ill patients). Higher score = more affected. Change: score at observation minus score at baseline. Adjusted mean presented.
Percentage of Participants With a Clinical Global Impression, Improvement (CGI-I) Response Defined as a Score of 'Very Much Improved' or 'Much Improved' at Week 26Week 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 StudyA 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Higher score = more affected.
Percentage of Participants With Remission as Determined by a CDRS-R Score of ≤28 at Week 26 Based on Observed CasesWeek 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 StudyClinician-rated interview-based scale (with both child and parent or guardian) to assess 17 distinct symptom areas to derive an index of depression severity. Discrepancies between informants' responses were resolved by using most impaired rating given by valid informant. Rated on a 7-point scale; range from 1 (no impairment) to 7 (indicates greater impairment). Total score calculated as sum of the 17 items (range 1 to 119); higher score indicates greater impairment. Adjusted mean presented.
Percentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesWeek 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 StudyA 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Improvement is defined as a score of 1 (very much improved), 2 (much improved), or 3 (minimally improved) on the scale. Higher score = more affected.

Countries

Mexico, United States

Participant flow

Recruitment details

Participants who completed the 8-week, double-blind treatment phase of Desvenlafaxine Succinate Sustained Release (DVS SR B2061014 NCT01372150) and completed the 1-week transition phase (week 9) of the short-term study were eligible to participate in this study (DVS SR B2061031).

Participants by arm

ArmCount
Placebo / DVS SR
Placebo in previous study B2061014/DVS SR flexible dose 20 mg - 50 mg in extension study B2061031
87
Fluoxetine / DVS SR
Fluoxetine 20 mg in previous study B2061014 /DVS SR flexible dose 20 mg - 50 mg in extension study B2061031
89
Desvenlafaxine Succinate Sustained Release / DVS SR
DVS SR weight based (25 mg, 35 mg, 50 mg) in previous study B2061014/DVS SR flexible dose 20 mg - 50 mg in extension study B2061031
92
Total268

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event545
Overall StudyLack of Efficacy243
Overall StudyLost to Follow-up826
Overall StudyOther230
Overall StudyProtocol Violation645
Overall StudyRandomized but not treated100
Overall StudyWithdrawal by Subject5711

Baseline characteristics

CharacteristicPlacebo / DVS SRFluoxetine / DVS SRDesvenlafaxine Succinate Sustained Release / DVS SRTotal
Age, Continuous12.5 Years
STANDARD_DEVIATION 2.9
12.4 Years
STANDARD_DEVIATION 3.01
12.8 Years
STANDARD_DEVIATION 3.14
12.6 Years
STANDARD_DEVIATION 3.01
Gender
Female
47 Participants39 Participants49 Participants135 Participants
Gender
Male
40 Participants50 Participants43 Participants133 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —
other
Total, other adverse events
47 / 8761 / 8962 / 92170 / 268
serious
Total, serious adverse events
5 / 872 / 893 / 9210 / 268

Outcome results

Primary

Percentage of Participants Experiencing a Treatment Emergent Adverse Event

Time frame: Week 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 Study

Population: Safety Population-includes all treatment-assigned participants who took at least one dose of investigational product in the period of study B2061031.

ArmMeasureValue (NUMBER)
Placebo / DVS SRPercentage of Participants Experiencing a Treatment Emergent Adverse Event70.1 Percentage of Participants
Fluoxetine / DVS SRPercentage of Participants Experiencing a Treatment Emergent Adverse Event75.3 Percentage of Participants
Desvenlafaxine Succinate Sustained Release / DVS SRPercentage of Participants Experiencing a Treatment Emergent Adverse Event73.9 Percentage of Participants
CombinationPercentage of Participants Experiencing a Treatment Emergent Adverse Event73.1 Percentage of Participants
Secondary

Change From Baseline at Week 26 in the Children's Depression Rating Scale, Revised (CDRS-R) Total Score Based on Observed Cases

Clinician-rated interview-based scale (with both child and parent or guardian) to assess 17 distinct symptom areas to derive an index of depression severity. Discrepancies between informants' responses were resolved by using most impaired rating given by valid informant. Rated on a 7-point scale; range from 1 (no impairment) to 7 (indicates greater impairment). Total score calculated as sum of the 17 items (range 1 to 119); higher score indicates greater impairment. Adjusted mean presented.

Time frame: Week 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 Study

Population: ITT-included all randomized participants who had a baseline (of study B2061031) CDRS-R evaluation (Week 9 of study B2061014) took at least 1 dose of study drug and had at least 1 CDRS-R evaluation after the first dose of study drug in the B2061031 study period.

ArmMeasureValue (MEAN)Dispersion
Placebo / DVS SRChange From Baseline at Week 26 in the Children's Depression Rating Scale, Revised (CDRS-R) Total Score Based on Observed Cases-5.55 Score on a ScaleStandard Deviation 10.8
Fluoxetine / DVS SRChange From Baseline at Week 26 in the Children's Depression Rating Scale, Revised (CDRS-R) Total Score Based on Observed Cases-6.41 Score on a ScaleStandard Deviation 11.5
Desvenlafaxine Succinate Sustained Release / DVS SRChange From Baseline at Week 26 in the Children's Depression Rating Scale, Revised (CDRS-R) Total Score Based on Observed Cases-5.32 Score on a ScaleStandard Deviation 7.29
CombinationChange From Baseline at Week 26 in the Children's Depression Rating Scale, Revised (CDRS-R) Total Score Based on Observed Cases-5.78 Score on a ScaleStandard Deviation 10.03
Secondary

Change From Baseline at Week 26 in the Clinical Global Impression of Severity (CGI-S) Score Based on Observed Cases

A 7-point clinician rated scale to assess severity of participant's current illness state; range: 1 (normal - not ill at all) to 7 (among the most extremely ill patients). Higher score = more affected. Change: score at observation minus score at baseline. Adjusted mean presented.

Time frame: Week 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 Study

Population: ITT-included all randomized participants who had a baseline (of study B2061031) CDRS-R evaluation (Week 9 of study B2061014) took at least 1 dose of study drug and had at least 1 CDRS-R evaluation after the first dose of study drug in the B2061031 study period.

ArmMeasureValue (MEAN)Dispersion
Placebo / DVS SRChange From Baseline at Week 26 in the Clinical Global Impression of Severity (CGI-S) Score Based on Observed Cases-0.78 Score on a ScaleStandard Deviation 1.23
Fluoxetine / DVS SRChange From Baseline at Week 26 in the Clinical Global Impression of Severity (CGI-S) Score Based on Observed Cases-0.77 Score on a ScaleStandard Deviation 1.16
Desvenlafaxine Succinate Sustained Release / DVS SRChange From Baseline at Week 26 in the Clinical Global Impression of Severity (CGI-S) Score Based on Observed Cases-0.82 Score on a ScaleStandard Deviation 0.92
CombinationChange From Baseline at Week 26 in the Clinical Global Impression of Severity (CGI-S) Score Based on Observed Cases-0.79 Score on a ScaleStandard Deviation 1.1
Secondary

Percentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed Cases

A 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Improvement is defined as a score of 1 (very much improved), 2 (much improved), or 3 (minimally improved) on the scale. Higher score = more affected.

Time frame: Week 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 Study

Population: ITT-included all randomized participants who had a baseline (of study B2061031) CDRS-R evaluation (Week 9 of study B2061014) took at least 1 dose of study drug and had at least 1 CDRS-R evaluation after the first dose of study drug in the B2061031 study period.

ArmMeasureGroupValue (NUMBER)
Placebo / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMinimally Worse0.0 Percentage of Participants
Placebo / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMinimally Improved3.6 Percentage of Participants
Placebo / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMuch Worse1.8 Percentage of Participants
Placebo / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesVery Much Improved63.6 Percentage of Participants
Placebo / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesVery Much Worse0.0 Percentage of Participants
Placebo / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesNo Change3.6 Percentage of Participants
Placebo / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMuch Improved27.3 Percentage of Participants
Fluoxetine / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesNo Change1.6 Percentage of Participants
Fluoxetine / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMinimally Worse1.6 Percentage of Participants
Fluoxetine / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMuch Improved29.5 Percentage of Participants
Fluoxetine / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesVery Much Improved63.9 Percentage of Participants
Fluoxetine / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMuch Worse0.0 Percentage of Participants
Fluoxetine / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMinimally Improved3.3 Percentage of Participants
Fluoxetine / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesVery Much Worse0.0 Percentage of Participants
Desvenlafaxine Succinate Sustained Release / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMuch Worse0.0 Percentage of Participants
Desvenlafaxine Succinate Sustained Release / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesVery Much Improved57.1 Percentage of Participants
Desvenlafaxine Succinate Sustained Release / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMuch Improved35.7 Percentage of Participants
Desvenlafaxine Succinate Sustained Release / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMinimally Improved5.4 Percentage of Participants
Desvenlafaxine Succinate Sustained Release / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesNo Change1.8 Percentage of Participants
Desvenlafaxine Succinate Sustained Release / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMinimally Worse0.0 Percentage of Participants
Desvenlafaxine Succinate Sustained Release / DVS SRPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesVery Much Worse0.0 Percentage of Participants
CombinationPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMuch Worse0.6 Percentage of Participants
CombinationPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesNo Change2.3 Percentage of Participants
CombinationPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMinimally Improved4.1 Percentage of Participants
CombinationPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesVery Much Improved61.6 Percentage of Participants
CombinationPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesVery Much Worse0.0 Percentage of Participants
CombinationPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMuch Improved30.8 Percentage of Participants
CombinationPercentage of Participants by Clinical Global Impression Improvement (CGI-I) Score at Week 26 Based on Observed CasesMinimally Worse0.6 Percentage of Participants
Secondary

Percentage of Participants With a Clinical Global Impression, Improvement (CGI-I) Response Defined as a Score of 'Very Much Improved' or 'Much Improved' at Week 26

A 7-point clinician rated scale ranging from 1 (very much improved) to 7 (very much worse). Higher score = more affected.

Time frame: Week 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 Study

Population: ITT-included all randomized participants who had a baseline (of study B2061031) CDRS-R evaluation (Week 9 of study B2061014) took at least 1 dose of study drug and had at least 1 CDRS-R evaluation after the first dose of study drug in the B2061031 study period.

ArmMeasureValue (NUMBER)
Placebo / DVS SRPercentage of Participants With a Clinical Global Impression, Improvement (CGI-I) Response Defined as a Score of 'Very Much Improved' or 'Much Improved' at Week 2690.9 Percentage of Participants
Fluoxetine / DVS SRPercentage of Participants With a Clinical Global Impression, Improvement (CGI-I) Response Defined as a Score of 'Very Much Improved' or 'Much Improved' at Week 2693.4 Percentage of Participants
Desvenlafaxine Succinate Sustained Release / DVS SRPercentage of Participants With a Clinical Global Impression, Improvement (CGI-I) Response Defined as a Score of 'Very Much Improved' or 'Much Improved' at Week 2692.9 Percentage of Participants
CombinationPercentage of Participants With a Clinical Global Impression, Improvement (CGI-I) Response Defined as a Score of 'Very Much Improved' or 'Much Improved' at Week 2692.4 Percentage of Participants
Secondary

Percentage of Participants With Remission as Determined by a CDRS-R Score of ≤28 at Week 26 Based on Observed Cases

Clinician-rated interview-based scale (with both child and parent or guardian) to assess 17 distinct symptom areas to derive an index of depression severity. Discrepancies between informants' responses were resolved by using most impaired rating given by valid informant. Rated on a 7-point scale; range from 1 (no impairment) to 7 (indicates greater impairment). Total score calculated as sum of the 17 items (range 1 to 119); higher score indicates greater impairment. Adjusted mean presented.

Time frame: Week 9 (B2061014)/Day 1 (B2061031) to Week 26 of the B2061031 Study

Population: ITT-included all randomized participants who had a baseline (of study B2061031) CDRS-R evaluation (Week 9 of study B2061014) took at least 1 dose of study drug and had at least 1 CDRS-R evaluation after the first dose of study drug in the B2061031 study period.

ArmMeasureValue (NUMBER)
Placebo / DVS SRPercentage of Participants With Remission as Determined by a CDRS-R Score of ≤28 at Week 26 Based on Observed Cases74.5 Percentage of Participants
Fluoxetine / DVS SRPercentage of Participants With Remission as Determined by a CDRS-R Score of ≤28 at Week 26 Based on Observed Cases78.7 Percentage of Participants
Desvenlafaxine Succinate Sustained Release / DVS SRPercentage of Participants With Remission as Determined by a CDRS-R Score of ≤28 at Week 26 Based on Observed Cases73.2 Percentage of Participants
CombinationPercentage of Participants With Remission as Determined by a CDRS-R Score of ≤28 at Week 26 Based on Observed Cases75.6 Percentage of Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026