NEW YORK – For the first time, the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis is preparing evidence-based treatment recommendations for the diagnosis and management of the comorbidities associated with psoriatic arthritis.
"I am really excited that we are taking the initiative to treat and manage the psoriatic arthritis [PsA] patient as a whole," reported Dr. Elaine Husni, director of the Arthritis and Musculoskeletal Center at the Cleveland Clinic. The guidelines are meant to be a "platform on which to raise awareness" and foster education.
Dr. Elaine Husni
An initial set of guidelines on comorbidities was drafted at the joint meetings of the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA) and the Spondyloarthritis Research & Treatment Network (SPARTAN). Dr. Husni led the consensus group and fielded questions about key recommendations.
The first of these recommendations, which will undergo a process of discussion and review prior to formal adoption, states that all patients with PsA should be evaluated for cardiovascular (CV) disease. The consensus group labeled this recommendation "strong" even while conferring it with grade D evidence.
"The grade D was based on the fact that there are no outcomes data specifically in patients with psoriatic arthritis," observed Dr. Alexis R. Ogdie-Beatty, director of the Penn Psoriatic Arthritis Clinic at the University of Pennsylvania, Philadelphia. A member of the consensus group, Dr. Ogdie-Beatty suggested that benefit from CV screening is still a reasonable expectation "given the growing evidence that patients with PsA are at increased risk."
Similar "strong" recommendations but grade D evidence were given for screening for ophthalmic complications and inflammatory bowel disease. In these cases, there is good evidence for an association with PsA but limited evidence that screening will lead to improved outcome. The exception was obesity for which the group gave a B rating to the evidence for benefit from diagnosis and treatment.
Screening for diabetes was also included among recommendations, but it was given a "weak" rating and a grade D for supportive evidence.
Most of the other recommendations involved screening for various infections, such as hepatitis C virus (HCV), HIV, and tuberculosis, prior to initiating immunosuppressant therapies, particularly biologics. The level of evidence for these recommendations typically ranged between B and C even though all were given strong recommendations.
Dr. Alexis R. Ogdie-Beatty
The consensus recommendations are not expected to include much detail about the specific management of comorbidities. The reason is concern about their applicability across various settings of care. It was thought that GRAPPA, as an international organization, should accommodate different types of practice. For example, the group cautioned against outlining steps of CV risk management, which may be managed by rheumatologists in some areas of the world but by specialists in others.
"We want to stay away from being minicardiologists," Dr. Husni explained. She indicated that the goal of the recommendations is to simply identify the specific types of comorbidity screening that should be considered "core recommendations" in the approach to PsA.
However, there is interest in creating a table regarding the use of specific medications for PsA treatment in the context of comorbidities. In a color-coded draft presented at the GRAPPA and SPARTAN meeting, some examples included caution in the use of NSAIDs in patients with CV disease, a need for monitoring when using cyclosporine in patients with chronic kidney disease, and a preference for etanercept over other tumor necrosis factor inhibitors in patients with HCV infection.
Overall, recommendations for comorbidities were identified as an important step in defining optimal care for PsA. According to Dr. Ogdie-Beatty, "the most important point may be to raise awareness." As these recommendations wend their way through an approval process at the organizational level, Dr. Ogdie-Beatty expressed hope that the final wording is specific enough to encourage attention to comorbidities without restricting a variety of valid approaches.
Dr. Husni reported a financial relationship with Celgene. Dr. Ogdie-Beatty had no potential conflicts of interest to report.