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Pfizer’s Xeljanz XR Study: A Closer Look at Safety and Effectiveness

Pfizer’s Xeljanz XR Study: A Closer Look at Safety and Effectiveness

Pfizer Inc ((PFE)) announced an update on their ongoing clinical study.

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Pfizer Inc. is currently conducting a post-marketing surveillance study titled ‘Korean Post-marketing Surveillance for Xeljanz XR.’ The study aims to evaluate the safety and effectiveness of Xeljanz XR, an extended-release tablet containing Tofacitinib citrate, under routine clinical practice in Korea. This surveillance is significant as it forms part of the risk management plan for the drug, targeting patients with conditions such as Rheumatoid Arthritis, Psoriatic Arthritis, and Ankylosing Spondylitis.

The intervention being tested in this study is Tofacitinib XR, a drug designed to manage symptoms of inflammatory conditions by modulating the immune response. It is specifically intended for patients with active moderate to severe forms of the aforementioned conditions.

This observational study follows a cohort model with a prospective time perspective. It does not involve any specific allocation or masking, as it aims to observe the drug’s effects in a real-world setting, focusing primarily on safety and effectiveness.

The study began on April 20, 2021, with an estimated completion date in 2025. The most recent update was submitted on September 23, 2025. These dates are crucial for tracking the study’s progress and ensuring timely updates for stakeholders.

The ongoing study could potentially impact Pfizer’s stock performance positively if the results demonstrate favorable safety and effectiveness, enhancing investor confidence. However, the competitive landscape in the pharmaceutical industry, particularly in the segment of treatments for inflammatory conditions, remains a factor to watch.

The study is currently recruiting, and further details are available on the ClinicalTrials portal.

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