Ustekinumab In The Treatment Of Psoriatic Arthritis: Investigational Study Published

February 12, 2009 at 2:00 pm Leave a comment


A group of patients suffering from potentially debilitating psoriatic arthritis showed significant and prolonged improvement after treatment with ustekinumab, according to data from a randomized, double-blind, placebo-controlled study in patients with moderate to severe psoriatic arthritis (PsA). The Phase 2 study was published in the British medical journal The Lancet.





“This is a positive development for patients living with the joint pain and swelling that characterizes the disease, even as more research is needed to further test the efficacy of this treatment in psoriatic arthritis,” said Alice Gottlieb, MD, Chairperson of the Department of Dermatology at Tufts Medical Center and lead author of the study.





Tufts Medical Center was among several academic medical centers which participated in the study. Tufts Medical Center is a 451-bed hospital in Boston and the primary teaching hospital for Tufts University School of Medicine.





Ustekinumab is a human immunoglobulin monoclonal antibody that is also being studied for treatment of patients with moderate-to-severe plaque psoriasis. Researchers conducting the study published in The Lancet reported that at week 12 of the study, 42 percent of patients given 63 or 90 mg of the drug at weeks 0, 1, 2 and 3 showed significant improvement in their pain, stiffness and other symptoms defined by the American College of Rheumatology (ACR20) score compared with 14 percent of patients who received placebo at the same time points (P


A secondary endpoint of the study showed that of patients who had plaque psoriasis on at least 3 percent of their body, 52 percent receiving 63 or 90 mg ustekinumab at weeks 0, 1, 2 and 3 achieved at least a 75 percent improvement in psoriasis from baseline as measured by the Psoriasis Area and Severity Index (PASI 75) at week 12 compared with five percent of patients receiving placebo (P


Through week 12, the placebo-controlled portion of the study, the proportion of patients with at least one adverse event (AE) was similar between patients in Group 1 receiving ustekinumab (61 percent) and those in Group 2 receiving placebo (63 percent). There were no serious AEs in Group 1 versus 4 percent of patients (n=3) in Group 2. There were no deaths, no reports of malignancy, tuberculosis or serious infections in either group. Through week 36, after the placebo crossover, the pattern of AEs was similar to that observed through week 12 of the trial.





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Article adapted by Medical News Today from original press release.

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About Psoriatic Arthritis and Psoriasis





Psoriatic arthritis is a chronic inflammatory arthropathy manifesting with joint pain and swelling that can lead to joint destruction and debilitation. It is frequently associated with inflamed, scaly, red patches of skin psoriasis and psoriasis nail involvement. Symptoms may include stiffness and tenderness of the joints and surrounding tissue and reduced range of motion. Joints of the hands, wrists, knees, ankles, feet, lower back and neck are commonly affected. Psoriasis affects an estimated two to three percent of the world’s population, and approximately one out of three patients affected by psoriasis may develop psoriatic arthritis. Both men and women are equally affected by psoriatic arthritis, most commonly between the ages 30 and 50, in the peak of their productive years. Psoriasis affects two to four percent of the U.S. population. About a quarter of those with psoriasis have moderate to severe symptoms, and a third of those develop psoriatic arthritis.





Source: Julie Jette

Tufts University, Health Sciences

[Via http://www.medicalnewstoday.com]

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