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CompletedNCT01200524Updated Apr 25, 2014Results posted

A Study to Investigate the Analgesic Efficacy of AZD2423 Compared With Placebo After 28 Days Treatment in Patients With Posttraumatic Neuralgia..

A Phase 2 interventional study of AZD2423 and AZD2423 in Nerve Pain, sponsored by AstraZeneca. Completed at 25 sites in 7 countries. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2014-04-25.

Sponsored by AstraZeneca · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
133
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

A study to investigate the analgesic efficacy of AZD2423 compared with placebo after 28 days treatment in patients with posttraumatic neuralgia.

02

Conditions studied

  • Nerve Pain

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Keywords

  • Analgesic effect
03

In context

Neuralgia

1,287 studies on the registry are indexed under Neuralgia; 256 are open to participants now.

This study's enrollment of 133 is above the median of 52 across 973 interventional studies indexed under Neuralgia.

Browse Neuralgia studies →

Lead sponsor

AstraZeneca is the lead sponsor of 3,429 studies on the registry; 270 are open to participants now.

Of its 357 completed or terminated interventional studies of FDA-regulated products, 173 (48%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Provision of signed informed consent form
  • Males and female patients aged 18 to 80 years
  • Patients with neuropathic pain due to peripheral nerve injury caused by trauma or surgery

Exclusion criteria

Exclusion Criteria:

  • Other paint that may confound assessment of neuropathic pain
  • History of treatment failure with more than three adequate trials of treatment for neuropathic pain
  • Central neuropathic pain conditions (caused by Central Nervous System injury/disease, eg. Stroke)
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
133 participants (actual)

Study arms

  • Experimental
    AZD2423, 20mg

    Drug: AZD2423

  • Experimental
    AZD2423, 150 mg

    Drug: AZD2423

  • Placebo comparator
    Placebo

    Tablet to match the 20 mg and 50 mg AZD2423 active tablet

    Drug: Placebo

Interventions

  • DrugAZD2423

    20 mg tablet

  • DrugAZD2423

    50 mg tablet

  • DrugPlacebo

    Placebo

06

What researchers measure

Primary outcomes

  1. Change From Baseline to Days 24-28 in Numerical Rating Scale (NRS) Average Pain Score.

    Last Observation Carried Forward (LOCF). Twice daily, the participants rated their Average Pain intensity during the past 12 hours on an Numerical Rating Scale (NRS) scale 0-10. 0= No pain, 10= Worst pain imaginable.

    Time frame: Baseline (mean of Day -5 to Day -1) to the mean of Day 24 to Day 28

Secondary outcomes

  1. Change From Baseline to Days 24-28 in Numerical Rating Scale (NRS) Worst Pain Score

    Last Observation Carried Forward (LOCF). Twice daily, the participants rated their Worst Pain intensity during the past 12 hours on an Numerical Rating Scale (NRS) 0-10; 0=No pain, 10=Worst pain imaginable.

    Time frame: Baseline (mean of Day -5 to Day -1) to the mean of Day 24 to Day 28

  2. Number of Participants With at Least 30% Decrease From Baseline in Numerical Rating Scale (NRS) Average Pain Score at Day 28.

    LOCF- Last Observation Carried Forward. Numerical Rating Scale (NRS) Average Pain score reduction= (change from baseline at Day 28/baseline)\*100. Responder=NRS Average Pain score reduction ≥30% (yes/no)

    Time frame: Baseline (mean of Day -5 to Day -1) to Day 28

  3. Number of Participants With at Least 50% Decrease From Baseline in Numerical RatingScale (NRS) Average Pain Score at Day 28.

    Last Observation Carried Forward (LOCF). Numerical Rating Scale (NRS) Average Pain score reduction=(change from baseline at Day 28/baseline)\*100. Responder= NRS Average Pain score reduction ≥50% (yes/no)

    Time frame: Baseline (mean of Day -5 to Day -1) to Day 28

  4. Change From Baseline to Day 29 in Neuropathic Pain Symptom Inventory Scal (NPSI) Total Score.

    LOCF- Last Observation Carried Forward. At baseline and at end of treatment the participants filled in their Neuropathic Pain Symptom Inventory Scal (NPSI) pain symptom descriptors, recall period 24 hours. Each descriptor was rated on a NUmerical Rating Scale 0-10; 0=No (symptom), 10=Worst (symptom) imaginable. The NPSI Total Score was calculated as the sum of 10 of the NPSI descriptors. Higher total score is considered worse outcome.

    Time frame: Baseline (Day 1) to Day 29 (Visit 7)

07

Results

Posted Sep 25, 2013

Participant flow

The first participant was enrolled on 6th October 2010 and the last participant completed on 3rd April 2012. A total of 36 centres in France, Denmark, Poland, Russia, UK, Sweden and Bulgaria randomised 133 participants.

Participant flow — Overall Study
MilestoneAZD2423, 150 mgAZD2423, 20mgPlacebo
Started414844
Completed394740
Not completed214
Withdrew: Withdrawal by subject113
Withdrew: Adverse event100
Withdrew: Non availability of study nurse001

Outcome measures

PrimaryChange From Baseline to Days 24-28 in Numerical Rating Scale (NRS) Average Pain Score.

Last Observation Carried Forward (LOCF). Twice daily, the participants rated their Average Pain intensity during the past 12 hours on an Numerical Rating Scale (NRS) scale 0-10. 0= No pain, 10= Worst pain imaginable.

Time frame:
Baseline (mean of Day -5 to Day -1) to the mean of Day 24 to Day 28
Reported as:
Mean · Scores on a scale
Change From Baseline to Days 24-28 in Numerical Rating Scale (NRS) Average Pain Score.
Scores on a scaleAZD2423, 150 mgAZD2423, 20mgPlacebo
Change From Baseline to Days 24-28 in Numerical Rating Scale (NRS) Average Pain Score.-1.53 ± 1.67-1.54 ± 1.50-1.44 ± 1.59
SecondaryChange From Baseline to Days 24-28 in Numerical Rating Scale (NRS) Worst Pain Score

Last Observation Carried Forward (LOCF). Twice daily, the participants rated their Worst Pain intensity during the past 12 hours on an Numerical Rating Scale (NRS) 0-10; 0=No pain, 10=Worst pain imaginable.

Time frame:
Baseline (mean of Day -5 to Day -1) to the mean of Day 24 to Day 28
Reported as:
Mean · Scores on a scale
Change From Baseline to Days 24-28 in Numerical Rating Scale (NRS) Worst Pain Score
Scores on a scaleAZD2423, 150 mgAZD2423, 20mgPlacebo
Change From Baseline to Days 24-28 in Numerical Rating Scale (NRS) Worst Pain Score-1.8 ± 2.09-1.29 ± 1.5-1.4 ± 1.66
SecondaryNumber of Participants With at Least 30% Decrease From Baseline in Numerical Rating Scale (NRS) Average Pain Score at Day 28.

LOCF- Last Observation Carried Forward. Numerical Rating Scale (NRS) Average Pain score reduction= (change from baseline at Day 28/baseline)\*100. Responder=NRS Average Pain score reduction ≥30% (yes/no)

Time frame:
Baseline (mean of Day -5 to Day -1) to Day 28
Reported as:
Number · Participants
Number of Participants With at Least 30% Decrease From Baseline in Numerical Rating Scale (NRS) Average Pain Score at Day 28.
ParticipantsAZD2423, 150 mgAZD2423, 20mgPlacebo
Number of Participants With at Least 30% Decrease From Baseline in Numerical Rating Scale (NRS) Average Pain Score at Day 28.171517
SecondaryNumber of Participants With at Least 50% Decrease From Baseline in Numerical RatingScale (NRS) Average Pain Score at Day 28.

Last Observation Carried Forward (LOCF). Numerical Rating Scale (NRS) Average Pain score reduction=(change from baseline at Day 28/baseline)\*100. Responder= NRS Average Pain score reduction ≥50% (yes/no)

Time frame:
Baseline (mean of Day -5 to Day -1) to Day 28
Reported as:
Number · Participants
Number of Participants With at Least 50% Decrease From Baseline in Numerical RatingScale (NRS) Average Pain Score at Day 28.
ParticipantsAZD2423, 150 mgAZD2423, 20mgPlacebo
Number of Participants With at Least 50% Decrease From Baseline in Numerical RatingScale (NRS) Average Pain Score at Day 28.989
SecondaryChange From Baseline to Day 29 in Neuropathic Pain Symptom Inventory Scal (NPSI) Total Score.

LOCF- Last Observation Carried Forward. At baseline and at end of treatment the participants filled in their Neuropathic Pain Symptom Inventory Scal (NPSI) pain symptom descriptors, recall period 24 hours. Each descriptor was rated on a NUmerical Rating Scale 0-10; 0=No (symptom), 10=Worst (symptom) imaginable. The NPSI Total Score was calculated as the sum of 10 of the NPSI descriptors. Higher total score is considered worse outcome.

Time frame:
Baseline (Day 1) to Day 29 (Visit 7)
Reported as:
Mean · Scores on a scale
Change From Baseline to Day 29 in Neuropathic Pain Symptom Inventory Scal (NPSI) Total Score.
Scores on a scaleAZD2423, 150 mgAZD2423, 20mgPlacebo
Change From Baseline to Day 29 in Neuropathic Pain Symptom Inventory Scal (NPSI) Total Score.-16.58 ± 22.40-8.82 ± 18.11-9.8 ± 15.44

Adverse events

Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
AZD2423, 150 mg—0/41 (0%)14/41 (34.1%)
AZD2423, 20mg—0/48 (0%)14/48 (29.2%)
Placebo—0/44 (0%)10/44 (22.7%)
Most frequent other events
Most frequent other events
EventAZD2423, 150 mgAZD2423, 20mgPlacebo
HeadacheNervous system disorders6/414/483/44
NasopharyngitisInfections and infestations2/415/484/44
NauseaGastrointestinal disorders4/413/482/44
DiarrhoeaGastrointestinal disorders3/411/481/44
AstheniaGeneral disorders0/413/480/44

Baseline characteristics

Age, Continuous
Age, Continuous(Years)AZD2423, 150 mgAZD2423, 20mgPlaceboTotal
Mean50.9 ± 10.953.1 ± 10.955.1 ± 10.953.1 ± 10.9
Sex: Female, Male
Sex: Female, Male(Participants)AZD2423, 150 mgAZD2423, 20mgPlaceboTotal
Female17261962
Male24222571
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)AZD2423, 150 mgAZD2423, 20mgPlaceboTotal
White414744132
Black or African American0101
08

Study locations

25 sites
  • Research Site
    Pleven, Bulgaria
  • Research Site
    Sofia, Bulgaria
  • Research Site
    Aalborg, Denmark
  • Research Site
    Odense, Denmark
  • Research Site
    Boulogne Billancourt, France
  • Research Site
    Clermont Ferrand, France
  • Research Site
    Nice, France
  • Research Site
    Saint-priest En Jarez, France
  • Research Site
    Gdansk, Poland
  • Research Site
    Katowice, Poland
  • Research Site
    Krakow, Poland
  • Research Site
    Poznan, Poland
  • Research Site
    Tychy, Poland
  • Research Site
    Warszawa, Poland
  • Research Site
    Kazan, Russian Federation
  • Research Site
    Moscow, Russian Federation
  • Research Site
    St. Petersburg, Russian Federation
  • Research Site
    UFA, Russian Federation
  • Research Site
    Falköping, Sweden
  • Research Site
    Kristianstad, Sweden
  • Research Site
    Stockholm, Sweden
  • Research Site
    Birmingham, United Kingdom
  • Research Site
    Bradford, United Kingdom
  • Research Site
    Glasgow, United Kingdom
  • Research Site
    Manchester, United Kingdom
09

References and documents

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 25, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT01200524
Lead sponsor
AstraZeneca
Responsible party
Sponsor
First posted
Sep 13, 2010
Start date
Oct 2010
Primary completion
Apr 2012
Completion
Apr 2012
Results posted
Sep 25, 2013
Last update
Apr 25, 2014

Study contacts

Bror Jonzon
study director · AstraZeneca

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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