Long-Term Safety and Efficacy of Janus kinase (JAK) Inhibitors in the Treatment of Rheumatoid Arthritis

Abstract

Background: Janus kinase (JAK) inhibitors are a new class of drugs for the treatment of rheumatoid arthritis (RA); however, the long-term consequences of using these drugs are still not well understood. Objective: The primary objective of this research was to examine the effectiveness and safety of JAK inhibitors for the management of rheumatoid arthritis (RA) patients. Methodology: Clinical raw data of 150 RA patients receiving JAK inhibitors was collected in different tertiary care hospitals in Lahore, Pakistan from March 2023 to June 2024. till were conducted. The anti-inflammatory effect was evaluated by the Disease Activity Score in 28 joints (DAS28) and the safety profile through adverse events, laboratory markers, and patients self-reported outcomes. The SPSS version 27 applied for raw data analysis which used the paired t-tests and multiple regression models to establish the factors that determine favorable outcomes and complications. Results: JAK inhibitors also reduced the DAS28 scores from baseline to 24 months by a mean of 3. 2 ± 1. 1 (p<0. 001). The findings stated that 12 percent of the patients at baseline and 45 percent of the patients at 24 months had achieved remission. The reported side effects were infections, 25%; gastrointestinal problems, 18%; and abnormal liver function tests, 10%. Severe adverse reactions were noted in 5% of the patients and no new safety issues were observed over the course of the treatment. Conclusion: JAK inhibitors have been shown to be useful in decreasing the activity of RA for the long-term use with reasonable side effects. The results provided evidence that JAK inhibitors were best treatment of rheumatoid arthritis (RA) but for best efficacy results closely monitoring and specific approach should be applied.