VIENNA – Patients treated with an anti–tumor necrosis factor drug had a 5% annual rate of developing one or more psoriasiform skin lesions in a review of more than 400 patients who received these drugs to treat inflammatory bowel disease at a single center in Rome.
The cohort review confirmed prior reports that smoking is a risk factor for the appearance of psoriasislike skin lesions on patients being treated with an anti–tumor necrosis factor (TNF) drug, such as infliximab (Remicade) or adalimumab (Humira). The Rome experience also showed that in 28 of the 42 patients who developed a psoriasiform lesion, the eruption responded to topical treatment without need to stop or change the anti-TNF regimen. Ten of the 42 patients ultimately had to stop their anti-TNF regimen, Dr. Daniela Pugliese said at the United European Gastroenterology Global Congress.
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Dr. Daniela Pugliese
“There have been several case reports of this, but this is the largest cohort review yet reported by one center,” said Dr. Pugliese, a gastroenterologist in the inflammatory bowel disease (IBD) unit of Complesso Integrato Columbus, Catholic University in Rome.
The review included 402 patients treated with an anti-TNF drug at the unit during 2008-2013, with a median follow-up of 17 months. During follow-up, 42 patients developed a psoriasiform lesion with a biopsy-proven diagnosis, a rate of 5 cases/100 person-years on anti-TNF treatment. The IBD patients averaged 40 years old, and 60% had Crohn’s disease and 40% had ulcerative colitis. About 60% received infliximab treatment, and 40% adalimumab. Most lesions appeared in predilection sites, as well as on palmoplantar surfaces or on the scalp; nearly half the patients had lesions in two or more locations.
A multivariate regression analysis that assessed several demographic and clinical features of all 402 patients identified two parameters that significantly linked with lesion development. Smoking linked with a greater than twofold increased risk for having a psoriasiform lesion (78 of the patients, 19%, smoked), and concurrent treatment with a thiopurine such as azathioprine, linked with a 67% reduced rate of lesion development (85 patients, 21%, were on concurrent thiopurine treatment). All IBD patients seen at the Rome unit who smoked were counseled regarding smoking cessation, Dr. Pugliese said in an interview.
Among the patients who did not respond to topical treatment, four received some benefit from starting treatment with ustekinumab (Stelara), which especially benefited patients who were otherwise difficult to treat, Dr. Pugliese said. Other patients benefited from starting treatment with cyclosporine, methotrexate, or a transient treatment with an oral steroid. Two patients who developed lesions on infliximab switched to adalimumab, and two other patients who had lesions on adalimumab switched to infliximab.
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Dr. C. Janneke van der Woude
Dr. Pugliese and her associates did not have a good explanation of why patients on anti-TNF drugs develop these lesions, which Dr. Pugliese called “paradoxical.” One possible etiology is that inhibition of TNF-alpha results in uncontrolled production of interferon-alpha by plasmacytoid dendritic cells and this then triggers the psoriasiform eruptions.
A key element in managing these lesions may be early detection and topical treatment while they remain small, commented Dr. C. Janneke van der Woude, head of the IBD unit at Erasmus University Medical Center in Rotterdam, the Netherlands. “Every time we see an IBD patient who is on an anti-TNF drug, we ask whether they have had any itching, allergic reaction, arthritis, eye problem, or headache,” to facilitate early detection of an adverse effect from treatment, she said in an interview.
Dr. Pugliese had no disclosures. Dr. van der Woude said that she has been an adviser to Dr Falk, AbbVie, Janssen, Johnson & Johnson, and Cosmo.
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