Last updated on March 2020

CBD Treatment in Hand Osteoarthritis and Psoriatic Arthritis.


Brief description of study

A randomized, placebo-controlled trial with blinded outcome assessments will be conducted to evaluate the efficacy and safety of CBD in patients with Hand-OA and PsA during a 12-week treatment period.

Detailed Study Description

A randomized, placebo-controlled trial with blinded outcome assessments will be conducted to evaluate the efficacy and safety of CBD in patients with Hand-OA and PsA during a 12-week treatment period.

Aim: To assess the effect of CBD on visual analogue scale pain measurements at 12 weeks compared with placebo.

Patients and controls: Patients with nodal non-erosive Hand-OA or PsA and VASpain during the last 24hours of 30mm or more.

Primary outcome: Changes in VAS pain during the last 24 hours from baseline to 12 weeks. Measured with a 100mm VAS from the most symptomatic hand (Hand-OA) or joint (PsA).

Secondary outcomes: Changes in VAS pain from 12 to 24 weeks. Changes in each of the pain phenotyping areas from baseline to 12 and 24 weeks. Changes in central pain mechanisms measured with QST from baseline to 12 and 24 weeks.

Intervention: 10mg CBD tablets once daily for the first two weeks increasing to twice daily for week 3 and 4 if adequate analgesic effect is not attained at week 5 then the dose can be increased to 10mg thrice daily from week 5 and onward.

The medicine and placebo will be delivered and produced by Glostrup pharmacy.

Examination programme: All participants will receive a full medical interview and a physical examination which includes auscultation, blood pressure, heart rate and saturation measurements and BMI calculation. All participants will have blood drawn for later examination for markers of inflammation and degeneration. All participants will go through Quantitative Sensory Testing (QST). QST covers a wide range of different examinations techniques used to assess the functional status of the somatosensory system33. In the present study pressure algometry and cuff algometry will be performed.

Pain phenotyping: Participants will answer a series of questionnaires related to the pain experience to assess: Anxiety and depression (the hospital anxiety and depression scale), pain catastrophizing (the pain catastrophizing scale), pain description (The short form McGill questionnaire and pain detect questionnaire), sleep quality (Pittsburgh sleep quality index) and a widespread pain assessment questionnaire. To assess function and quality of life the Short form 36 and Health assessment questionnaire will be used.

Patients with PsA: Will receive an examination for disease specific tests including: joint tenderness and swelling using the EULAR66/68 regiment, dactylitis evaluation using Leeds dactylitis index basic, skin involvement using the psoriasis area and severity index and nail psoriasis via nail psoriasis severity index.

Patients with Hand-OA: Will receive the following disease specific examinations evaluation of tender and swollen joints of the hands and wrists. Grip and pinch strength measurements using a hand-held dynamometer.

The trial consists of a screening visit, a baseline visit where the patient will undergo randomization, a phone consultation after 5 weeks and an end of trial visit at week 12. Patients will be invited to a follow-up visit at week 24.

Patients will be asked for adverse events at each visit and these are recorded in the eCRF.

Clinical Study Identifier: NCT03693833

Recruitment Status: Closed


Brief Description Eligibility Contact Research Team


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