NCT01179828

Brief Summary

Drug therapy in patients with chronic low back pain is a major challenge for physicians. One of the problems is the lacking knowledge in prediction of drug efficacy in a chosen patient. Usually one of the classes of pain medication is given to patients with a similar clinical picture, although different pain mechanisms may be responsible for this clinical picture. Another reason for variable drug efficacy are genetic polymorphisms, this may be the reason why an unique drug produces different responses (from a lacking analgesic effect up to excessive effect or side-effects. Quantitative sensory testing is a method that documents alterations in the pain perception system. Linking genetic polymorphisms to quantitative sensory testing may give us a tool for anticipation of drug efficacy.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
150

participants targeted

Target at P25-P50 for phase_3 low-back-pain

Timeline
Completed

Started Jul 2010

Longer than P75 for phase_3 low-back-pain

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

July 1, 2010

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

August 10, 2010

Completed
1 day until next milestone

First Posted

Study publicly available on registry

August 11, 2010

Completed
4.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2015

Completed
8 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2015

Completed
Last Updated

April 6, 2016

Status Verified

April 1, 2016

Enrollment Period

4.8 years

First QC Date

August 10, 2010

Last Update Submit

April 5, 2016

Conditions

Keywords

Quantitative sensory testingDrug efficacyLow back pain syndromeImipramineOxycodoneClobazamTolterodine

Outcome Measures

Primary Outcomes (1)

  • Difference in NRS(pain scale) between measurement after and before drug administration

    07/2012

Secondary Outcomes (4)

  • Patients global impression of change scale after drug administration

    07/2012

  • Pharmacogenetic variables(see before)

    07/2012

  • Pharmacokinetics: measure of Imipramine and desipramine blood levels

    07/2012

  • Reliability of repeated quantitative sensory testing in the same patient

    12/2010

Study Arms (4)

1

ACTIVE COMPARATOR

Oxycodone 15mg

Drug: Oxycodone 15mg

2

ACTIVE COMPARATOR

Clobazam 20mg

Drug: Clobazam

3

ACTIVE COMPARATOR

Imipramine 75mg

Drug: Imipramine

4

PLACEBO COMPARATOR

Tolterodine 1mg

Drug: Tolterodine

Interventions

15mg single administration p.o.

1

20mg single administration p.o.

2

75mg single administration p.o.

3

1 mg single administration p.o.

4

Eligibility Criteria

Age18 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Low back pain with NRS\>2
  • Chronic low back pain since more than 6 months

You may not qualify if:

  • pregnancy
  • use of pain medication other than paracetamol and ibuprofen in the last 7 days
  • suspicion of radicular pain
  • suspicion of intervertebral disk herniation
  • foraminal intervertebral stenosis
  • suspicion of polyneuropathy
  • diabetes
  • parkinson disease
  • alzheimer disease
  • glaucoma
  • prostata hyperplasia or voiding problems
  • known heart rhythm problems
  • heart insufficiency NYHA 3-4
  • Systemic inflammatory disease
  • Ongoing oncologic disease
  • +2 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Andreas Siegenthaler

Dep. of Anesthesiolgy and Pain Therapy, Bern University Hospital, 3010 Bern, Switzerland

Location

Related Publications (7)

  • Saarto T, Wiffen PJ. Antidepressants for neuropathic pain. Cochrane Database Syst Rev. 2007 Oct 17;2007(4):CD005454. doi: 10.1002/14651858.CD005454.pub2.

    PMID: 17943857BACKGROUND
  • Arendt-Nielsen L, Yarnitsky D. Experimental and clinical applications of quantitative sensory testing applied to skin, muscles and viscera. J Pain. 2009 Jun;10(6):556-72. doi: 10.1016/j.jpain.2009.02.002. Epub 2009 Apr 19.

  • Foulkes T, Wood JN. Pain genes. PLoS Genet. 2008 Jul 25;4(7):e1000086. doi: 10.1371/journal.pgen.1000086.

  • Curatolo M, Arendt-Nielsen L, Petersen-Felix S. Central hypersensitivity in chronic pain: mechanisms and clinical implications. Phys Med Rehabil Clin N Am. 2006 May;17(2):287-302. doi: 10.1016/j.pmr.2005.12.010.

  • Markenson JA, Croft J, Zhang PG, Richards P. Treatment of persistent pain associated with osteoarthritis with controlled-release oxycodone tablets in a randomized controlled clinical trial. Clin J Pain. 2005 Nov-Dec;21(6):524-35. doi: 10.1097/01.ajp.0000146215.86038.38.

  • Schliessbach J, Siegenthaler A, Butikofer L, Vuilleumier P, Juni P, Arendt-Nielsen L, Curatolo M. Quantitative sensory tests fairly reflect immediate effects of oxycodone in chronic low-back pain. Scand J Pain. 2017 Oct;17:107-115. doi: 10.1016/j.sjpain.2017.07.004. Epub 2017 Aug 9.

  • Siegenthaler A, Schliessbach J, Vuilleumier PH, Juni P, Zeilhofer HU, Arendt-Nielsen L, Curatolo M. Linking altered central pain processing and genetic polymorphism to drug efficacy in chronic low back pain. BMC Pharmacol Toxicol. 2015 Sep 16;16:23. doi: 10.1186/s40360-015-0023-z.

MeSH Terms

Conditions

Low Back Pain

Interventions

OxycodoneClobazamImipramineTolterodine Tartrate

Condition Hierarchy (Ancestors)

Back PainPainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

CodeineMorphine DerivativesMorphinansOpiate AlkaloidsAlkaloidsHeterocyclic CompoundsHeterocyclic Compounds, Bridged-RingHeterocyclic Compounds, 4 or More RingsHeterocyclic Compounds, Fused-RingPhenanthrenesPolycyclic Aromatic HydrocarbonsPolycyclic CompoundsBenzodiazepinesBenzazepinesHeterocyclic Compounds, 2-RingDibenzazepinesHeterocyclic Compounds, 3-RingPhenylpropanolaminePropanolaminesAmino AlcoholsAlcoholsOrganic ChemicalsPropanolsAminesBenzhydryl CompoundsBenzene DerivativesHydrocarbons, AromaticHydrocarbons, CyclicHydrocarbonsCresolsPhenols

Study Officials

  • Michele Curatolo, Prof

    University Hospital Bern, Switzerland

    STUDY CHAIR
  • Andreas Siegenthaler, Dr Med

    University Hospital Bern, Switzerland

    STUDY DIRECTOR
  • Pascal H Vuilleumier, Dr Med

    University Hospital Bern, Switzerland

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Purpose
BASIC SCIENCE
Intervention Model
CROSSOVER
Sponsor Type
OTHER

Study Record Dates

First Submitted

August 10, 2010

First Posted

August 11, 2010

Study Start

July 1, 2010

Primary Completion

April 1, 2015

Study Completion

December 1, 2015

Last Updated

April 6, 2016

Record last verified: 2016-04

Locations