Benefit of Biological Drugs for Quality of Life in Patients with Ankylosing Spondylitis: A Systematic Review and Meta-Analysis of Clinical Trials.

Ankylosing spondylitis (AS) is a chronic inflammatory rheumatic disease involving the axial skeleton, peripheral joints, and extra-articular manifestations like psoriasis, inflammatory bowel disease, or uveitis. A deterioration of quality of life (QoL) affects the disease management and therapeutic decision-making. This meta-analysis focused on the influence of biological drugs on the QoL in SA compared to the effects of other therapeutic modalities. We searched the databases of MedLine, Academic Search Ultimate, CINAHL Complete, and Health Source - Nursing/Academic Edition for articles related to AS treatment using the terms "ankylosing spondylitis" OR "rheumatoid spondylitis" OR "spondylitis" AND "quality of life" OR "patient-reported outcomes" OR "well-being" OR "health-related quality of life" OR "biological treatment". The search came up with 10 English-language articles published between 2010 and 2020. Patients were evaluated with the following indexes and questionnaires: Assessment of Spondyloarthritis International Society (ASAS), Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), Ankylosing Spondylitis Quality of Life (ASQoL), 36-Item Short-Form Health Survey (SF-36), Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F), and the Bath Ankylosing Spondylitis Functional Index (BASFI), and Bath Ankylosing Spondylitis Functional (BASFI) Indexes. We found that the QoL, assessed with the ASQoL, improved significantly better in patients treated with biological drugs when compared to those treated with other standard therapies or placebo at a 4-month follow-up. However, improvements in other disease characteristics could not be differentiated based on the therapy modality. The finding that biological drugs are superior in improving the QoL should strengthen the recommendations for their use in patients with AS.