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FBSSNCT03210766

Nabilone and THC/CBD for the Treatment of FBSS Refractory Pain

An observational study of FBSS, run by Azienda Ospedaliera Universitaria Policlinico "G. Martino".

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The aim of this study is to evaluate the efficacy of oral administration of nabilone or THC/CBD administration in combination with spinal cord stimulation (SCS) in FBSS patients refractory to other available therapeutic strategies. Read more about this study

Who is it for?
Ages 45 to 70 years
Conditions the study is for
FBSS
What is being tested?
Nabilone and THC/CBD
How many people
20 participants
Where
No sites listed yet
Study dates
1 Sep 2014to 31 Jan 2016
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 45 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Patients that comes to the pain unit, suffer from FBSS refractory pain

Who may be able to join

  • FBSS with refractory pain
  • DN-4 score of 4 or +

Who cannot join

  • Adverse Drug Reaction
  • Subject suffers from FBSS that could not quit the previous pharmacological therapy

About this study

The aim of this study is to evaluate the efficacy of oral administration of nabilone or THC/CBD administration in combination with spinal cord stimulation (SCS) in FBSS patients refractory to other available therapeutic strategies.

Read the detailed description

Failed Back Surgery Syndrome (FBSS) is defined as: spinal pain of unknown origin either persisting despite surgical intervention or appearing after surgical intervention for spinal pain originally in the same topographical location.

Several conditions have been identified as causes of FBSS: epidural fibrosis, canal stenosis (global or lateral), foraminal stenosis, retained disc fragment, recurrent disc herniation or degeneration, spinal instability, facet joint pain, sacroiliac joint pain, discitis, adhesive arachnoiditis and others.

Can involve 20% to 40% of patients who have undergone lumbar spine surgery and 0.02% to 2% of the general population suffer from this syndrome.

In FBSS symptoms are the persistence of low back pain, deterioration or recurrence of radiculopathy, sensory and/or motor deficit, sphincter dysfunction.

Chronic opioid therapy does not improve long-term pain management. Similar issues can occur with conservative measures like peridural injections of steroids, intrathecal analgesic infusion and local anesthetics injections. Despite a large part of FBSS patients benefit of radio-frequency treatment and/or spinal cord stimulation (SCS), a small percentage of them doesn't report benefits.

Pain could be treated by drugs modulating endocannabinoid system and it could represent a pharmacological option in a multimodal treatment approach for neuropathic pain.

Authors present a retrospective case series documenting the efficacy and safety of oral administration of cannabinoids agonists (THC/CBD and nabilone) in 20 FBSS patients, presenting moderate to severe chronic pain that not responding to other treatment regimens.

Cannabinoids agonists were administered in association with the practice of spinal cord stimulation (SCS).

Other analgesic therapies were discontinued before the beginning of the treatment.

The study was performed during the period between September 2014 and January 2016 and the duration was up to 12 months.

Characteristics and severity of neuropathic pain were measured using the Douleur Neuropathique 4 questionnaire. The Brief Pain Inventory allows patients to rate the severity of their pain and the degree to which pain interferes with common dimensions of feeling and function.

Patients aged between 45 and 69. All patients received a fixed dose of cannabinoid agonists: treatment was initiated with nabilone 1mg/day or an oleic suspension for oral administration of THC/CBD 25mg/day.

The basal dose was increased depending on effects on pain control. Adverse reactions were treated by decreasing the subscripted dose. If adverse events required the suspension of the administration of the initially prescribed drug, the same was switched with the other available in the study.

Conditions
FBSS
Being tested
Nabilone, THC/CBD
Keywords
Cannabinoids, nabilone, FBSS, THC/CBD, refractory pain
Medical subject headings
Failed Back Surgery Syndrome, Pain, Intractable

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • NabiloneDrug

    Also called Spinal Cord Stimulation

  • THC/CBDDrug

    Also called Spinal Cord Stimulation

Study groups in NCT03210766
Study groupRoleWhat they receive
NabilonePatients affected by Failed Back Surgery Syndrome (FBSS)
Receives: Drug: Nabilone
THC/CBDPatients affected by Failed Back Surgery Syndrome (FBSS)
Receives: Drug: THC/CBD

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Brief Pain Inventory (BPI)

    The Brief Pain Inventory allows patients to rate the severity of their pain and the degree to which their pain interferes with common dimensions of feeling and function. BPI has been shown to be an appropriate measure for pain caused by a wide range of clinical conditions. The BPI is an 11-item questionnaire that consists of four 0- to-10 numeric rating scale (NRS) items asking patients to rate their pain at its "worst in the last 24-hours," least in the last 24-hours," "average," and "now," with a 0 indicating "no pain" and 10 representing "pain as bad as you could imagine." The remaining seven BPI items probe the degree to which pain interferes with general activity, mood, walking ability, normal work, relations with other people, sleep, and enjoyment of life, again using a 0-to-10 value scale. For these interference items, 0 represents "does not interfere" and 10 indicates "interferes completely."

    Measured: 2015/1 to 2016/1

  2. Douleur Neuropathique-4 (DN-4)

    The DN4 questionnaire consists of a total of 10 items: 7 items related to the characteristics of pain (burning, painful cold, electric shocks) and its association with abnormal sensations (tingling, pins and needles, numbness, itching), and 3 related to neurological examination in the painful area (touch hypesthesia, pinprick hypesthesia, tactile allodynia). The value of 1 was given to each positive item, and 0 value to each negative item. The total score was calculated as the sum of all 10 items and the cutoff value for the diagnosis of neuropathic pain is established as a total score of 4/10.

    Measured: 2015/1 to 2016/1

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted7 Jul 2017
  2. Study start1 Sep 2014
  3. Primary completion1 Jan 2015
  4. Study completion31 Jan 2016

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Retrospective
Enrolment
20 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03210766
Sponsor's protocol ID
CAN 01
Status last verified
Jan 2019
First submitted
5 Jul 2017
Last updated
16 Jan 2019
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Burton CV, Kirkaldy-Willis WH, Yong-Hing K, Heithoff KB. Causes of failure of surgery on the lumbar spine. Clin Orthop Relat Res. 1981 Jun;(157):191-9.

    PubMed 7249453
  • Waguespack A, Schofferman J, Slosar P, Reynolds J. Etiology of long-term failures of lumbar spine surgery. Pain Med. 2002 Mar;3(1):18-22. doi: 10.1046/j.1526-4637.2002.02007.x.

    PubMed 15102214
  • Slipman CW, Shin CH, Patel RK, Isaac Z, Huston CW, Lipetz JS, Lenrow DA, Braverman DL, Vresilovic EJ Jr. Etiologies of failed back surgery syndrome. Pain Med. 2002 Sep;3(3):200-14; discussion 214-7. doi: 10.1046/j.1526-4637.2002.02033.x.

    PubMed 15099254
  • Krishna M, Pollock RD, Bhatia C. Incidence, etiology, classification, and management of neuralgia after posterior lumbar interbody fusion surgery in 226 patients. Spine J. 2008 Mar-Apr;8(2):374-9. doi: 10.1016/j.spinee.2006.09.004. Epub 2006 Dec 22.

    PubMed 17433779
  • Hussain A, Erdek M. Interventional pain management for failed back surgery syndrome. Pain Pract. 2014 Jan;14(1):64-78. doi: 10.1111/papr.12035. Epub 2013 Feb 3.

    PubMed 23374545
  • Choi HS, Chi EH, Kim MR, Jung J, Lee J, Shin JS, Ha IH. Demographic characteristics and medical service use of failed back surgery syndrome patients at an integrated treatment hospital focusing on complementary and alternative medicine: a retrospective review of electronic medical records. Evid Based Complement Alternat Med. 2014;2014:714389. doi: 10.1155/2014/714389. Epub 2014 Nov 4.

    PubMed 25530787
  • Shapiro CM. The failed back surgery syndrome: pitfalls surrounding evaluation and treatment. Phys Med Rehabil Clin N Am. 2014 May;25(2):319-40. doi: 10.1016/j.pmr.2014.01.014.

    PubMed 24787336
  • Thomson S. Failed back surgery syndrome - definition, epidemiology and demographics. Br J Pain. 2013 Feb;7(1):56-9. doi: 10.1177/2049463713479096.

    PubMed 26516498
  • Peul WC, van Houwelingen HC, van den Hout WB, Brand R, Eekhof JA, Tans JT, Thomeer RT, Koes BW; Leiden-The Hague Spine Intervention Prognostic Study Group. Surgery versus prolonged conservative treatment for sciatica. N Engl J Med. 2007 May 31;356(22):2245-56. doi: 10.1056/NEJMoa064039.

    PubMed 17538084
  • Chan CW, Peng P. Failed back surgery syndrome. Pain Med. 2011 Apr;12(4):577-606. doi: 10.1111/j.1526-4637.2011.01089.x. Epub 2011 Apr 4.

    PubMed 21463472
  • Khosravi MB, Azemati S, Sahmeddini MA. Gabapentin versus naproxen in the management of failed back surgery syndrome; a randomized controlled trial. Acta Anaesthesiol Belg. 2014;65(1):31-7.

    PubMed 24988825
  • Zencirci B. Analgesic efficacy of oral gabapentin added to standard epidural corticosteroids in patients with failed back surgery. Clin Pharmacol. 2010;2:207-11. doi: 10.2147/CPAA.S12126. Epub 2010 Sep 30.

    PubMed 22291506
  • Abeloos L, De Witte O, Riquet R, Tuna T, Mathieu N. [Long-term outcome of patients treated with spinal cord stimulation for therapeutically refractory failed back surgery syndrome: a retrospective study]. Neurochirurgie. 2011 Jul;57(3):114-9. doi: 10.1016/j.neuchi.2011.07.001. Epub 2011 Sep 9. French.

    PubMed 21907361
  • Van Buyten JP, Al-Kaisy A, Smet I, Palmisani S, Smith T. High-frequency spinal cord stimulation for the treatment of chronic back pain patients: results of a prospective multicenter European clinical study. Neuromodulation. 2013 Jan-Feb;16(1):59-65; discussion 65-6. doi: 10.1111/ner.12006. Epub 2012 Nov 30.

    PubMed 23199157
  • North RB, Kidd D, Shipley J, Taylor RS. Spinal cord stimulation versus reoperation for failed back surgery syndrome: a cost effectiveness and cost utility analysis based on a randomized, controlled trial. Neurosurgery. 2007 Aug;61(2):361-8; discussion 368-9. doi: 10.1227/01.NEU.0000255522.42579.EA.

    PubMed 17762749

Questions about this trial

What is this clinical trial studying?

An observational study of FBSS, run by Azienda Ospedaliera Universitaria Policlinico "G. Martino".

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 16 Jan 2019. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Brief Pain Inventory (BPI) (time frame: 2015/1 to 2016/1). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03210766, which also lists 61 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Jan 2019.

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