Efficacy of Golimumab in Combination With Methotrexate (MTX) Versus MTX Monotherapy, in Improving Dactylitis, in MTX naïve Psoriatic Arthritis Patients
Condition: Psoriatic Arthritis
MeSH terms: Arthritis; Arthritis, Psoriatic
Intervention: Golimumab; Methotrexate; Placebo
Intervention description: Prefilled syringe with golimumab 50mg (Simponi®) administrated subcutaneously, once monthly, for 24 weeks.; MTX started at 15mg/weekly at baseline, increased to 20mg/weekly at week 4 and to 25mg/weekly at week 8, maintaining the dose of 25mg/weekly throughout the trial period of 24 weeks, except in case of intolerance or toxicity; The prefilled syringe with placebo will be administrated subcutaneously, once monthly, for 24 weeks.
Intervention MeSH terms: Golimumab; Methotrexate
Phase: Phase 3
Study type: Interventional
Primary purpose: Treatment
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Enrollment: 44.0
Sex: All
Minimum age: 18 Years
Healthy volunteers: No
Keywords: Psoriatic arthritis, dactylitis, enthesitis

Summary:

      Dactylitis is a poor prognostic factor in psoriatic arthritis (PsA) patients. The efficacy of
      synthetic or biologic disease modifying anti-rheumatic drugs (DMARDs) on dactylitis has not
      been previously studied in randomized controlled trials as a primary endpoint.

      In this investigator initiated clinical trial the investigators aim to test the hypothesis
      that the combination therapy of golimumab and methotrexate (MTX) will result in a significant
      improvement of dactylitis in comparison with MTX monotherapy, in MTX naïve psoriatic
      arthritis patients, at week 24. Similarly the efficacy on enthesitis, peripheral and axial
      involvement, skin and nail psoriasis, inflammation and damage of the feet and hands assessed
      by magnetic resonance imaging (MRI), composite indexes of disease activity, remission,
      function and quality of life will be determined.

      This is a national multicentre, interventional, double-blinded, placebo-controlled, parallel
      design trial. 136 patients with active dactylitis, refractory to at least two systemic
      non-steroidal anti-inflammatory drugs (NSAIDs), at optimal dosage, for 3 months will be
      included and centrally randomized to golimumab in combination with MTX versus MTX
      monotherapy, in a 1:1 ratio. The study duration will be 24 weeks.

      The investigators expect the results from this trial will contribute to a better definition
      of the treatment algorithm of PsA patients with dactylitis.
    

Eligibility criteria:

        Inclusion Criteria:

        Each subject must be/have…..

          -  Able and willing to give written informed consent and comply with the requirements of
             the study protocol.

          -  Age ≥ 18 years old, at baseline. A subject may be of both gender and any
             race/ethnicity.

          -  PsA diagnosis according to Classification of Psoriatic Arthritis (CASPAR) criteria,
             established at least 3 months prior to screening.

          -  Active psoriatic arthritis, at the time of entry into the study, defined by:

             ≥1 tender dactylitis, refractory to at least two systemic NSAIDs, at optimal dosage,
             for 3 months and at least one other site of active inflammation (peripheral joints,
             enthesis, spine, skin or nails).

          -  Naïve to MTX therapy.

          -  Patients can have been previously treated with synthetic DMARDs (except MTX) or
             corticosteroids but must have withdrawn according to the following schedules:

               -  All synthetic DMARDs and oral corticosteroids withdrawn at least two weeks prior
                  to screening or 5 half lives according, to what is longer, except for
                  leflunomide.

               -  leflunomide ≥ 12 weeks or ≥ 2 weeks after standard cholestyramine or activated
                  charcoal washout.

               -  Up to a maximum of two local corticosteroids injection are allowed,
                  administrated, at least four weeks prior to screening (indication for local
                  corticoids injection is dependent on expert opinion decision).

               -  NSAIDs (up to the maximum recommend dose) if the dose has been stable for at
                  least 4 weeks prior to baseline and the patient is expected to remain on the
                  baseline dose for the 6 months of the study.

          -  Female subjects or male subjects and his female sexual partner of childbearing
             potential must agree to use a medically accepted method of contraception prior to
             enrollment, while receiving protocol-specified medication and for 6 months after
             stopping the medication.

               -  Medically accepted methods of contraception include condoms (male or female) with
                  a spermicidal agent, diaphragm or cervical cap with spermicide, medically
                  prescribed intrauterine device (IUD), inert or copper containing IUD,
                  hormone-releasing IUD, systemic hormonal contraceptive, and surgical
                  sterilization (eg, hysterectomy or tubal ligation). Other methods may be used as
                  required by local legislation.

               -  Postmenopausal women are not required to use contraception (postmenopausal is
                  defined as at least 12 consecutive months without a spontaneous menses).

        Exclusion Criteria:

        A subject meeting any of the exclusion criteria listed below must be excluded from
        participating in the trial.

        The subject has ….

          -  Known or suspected allergy to trial product or related products.

          -  Body weight > 100 Kg.

          -  Current chronic inflammatory autoimmune disease other than PsA that might confound the
             evaluations of safety and toxicity such as, but not limited to, ankylosing
             spondylitis, rheumatoid arthritis, tophaceous gout, reactive arthritis, pseudogout,
             arthropathy of inflammatory bowel disease, systemic erythematosus lupus, mixed
             connective tissue disease, scleroderma or variants, and polymyositis

          -  Active current infection or history of recurrent or chronic bacterial, viral, fungal,
             mycobacterial or other infections, including but not limited to tuberculosis and
             atypical mycobacterial disease, hepatitis B and C, HIV and herpes zoster.

          -  History of severe systemic bacterial, viral or fungal infections within the past 12
             months prior to screening.

          -  Past or current malignancy with the exception of:

               -  Adequately treated and cured basal cell carcinoma of the skin occurring more than
                  12 months prior to screening.

               -  Other cancer with a complete response duration of > 5 years or any period of time
                  longer than that, respectively for those malignancies which are considered as
                  resolved after passing this duration of response.

          -  Any clinically significant medical condition or situation, other than the condition
             being studied that, in the opinion of the investigator, would interfere with the trial
             evaluations or patients safety and optimal participation in the trial such as, but not
             limited to:

               -  Moderate to severe heart failure (New York Heart Association class III/IV)

               -  Pre-existing central nervous system demyelinating disorders

               -  Increased liver enzymes: alanine aminotransferase (ALT) or aspartate
                  aminotransferase (AST) > 2 times the upper limit of normal (ULN).

          -  Female subject must not be breast-feeding.

          -  Female subject must not be pregnant or intending to become pregnant.

          -  Any contra-indications to perform MRI:

               -  Patients who have a metal device affected by MRI

               -  Allergy or other contraindications to an i.v. injection of
                  gadolinium-diethylenetriamine pentaacetic acid

               -  Claustrophobia sufficient to interfere with the patient undergoing the MRI scan.

          -  Previous treatment with tumor necrosis factor (TNF) blocking therapy or other biologic
             agents.

          -  Previous MTX therapy.

          -  Latent tuberculosis, in the absence of at least one month of isoniazid therapy,
             according to local guidelines.