EFFICACY AND SAFETY OF OLOKIZUMAB IN THE MANAGEMENT OF RHEUMATOID ARTHRITIS- A SYSTEMATIC REVIEW AND META-ANALYSIS

Olokizumab (OKZ) is a monoclonal antibody against the interleukin receptor-6 that has shown promise in recent phase II and III trials in patients of rheumatoid arthritis (RA). This meta-analysis aims to evaluate the efficacy and safety of Olokizumab in managing rheumatoid arthritis.

We searched different databases until March 2023 for randomized controlled trials inspecting the effects of OKZ on various outcomes in RA patients inadequately controlled with anti-TNF or methotrexate. Data were analyzed via Review Manager-v 5.4.1. Relative risks (RR) with 95% confidence intervals were calculated.

We evaluated five trials with 2761 patients under four treatment groups: 60mg OKZ administered 2-weekly, 64mg 2-weekly, 64mg 4-weekly, and 120mg 2-weekly. Clinical response as measured by ACR 20, 50, and 70 showed statistically significant improvement with the use of OKZ. A 50% disease improvement was seen across all 4 treatment groups (OKZ 64 mg q2w: RR= 2.96, p<0.0001, OKZ 64mg q4w: RR= 3.06, p=0.0002, OKZ 60 mg q2w: RR=5.06, p=0.007, and OKZ 120mg q2w: RR= 3.63, p=0.04). Moreover, 20% and 70% improvements were also noted with OKZ in doses 64mg 2-weekly and 4-weekly. Disease remission, as indicated by DAS28 <2.6 was also significantly higher than placebo across all groups. Safety data showed comparable mortality rates in treatment and placebo groups (OKZ 64mg q2w: p=0.48, OKZ 64 mg q4w: p=0.93).

In conclusion, Olokizumab has shown significant improvement in disease activity compared to placebo with a favourable safety profile. However, further larger and longer-term studies are required to confirm these findings.