Data show need for clinician vigilance
Based on the 2020 Census data, an estimated 7.55 million adults in the United States have psoriasis, David Robles, MD, said in an interview. “Patients with psoriasis have a high risk for multiple comorbid conditions including metabolic syndrome, which is characterized by obesity, hypertension, and dyslipidemia,” said Dr. Robles, a dermatologist in private practice in Pomona, Calif., who was not involved in the study. “Although these complications were previously attributed to diet and obesity, it has become clear that the proinflammatory cytokines associated with psoriasis may be playing an important role underlying the pathologic basis of these other comorbidities.”
There is an emerging body of literature “indicating that psoriasis is associated with an increased risk of infections,” he added. Research in this area is particularly important because of the increased risk of infections associated with many biologic and immune-modulating treatments for psoriasis, Dr. Robles noted.
The study findings “indicate that, as the severity of psoriasis increases, so does the risk of severe and rare infections,” he said. “This makes it imperative for clinicians to be alert to the possibility of severe or rare infections in patients with psoriasis, especially those with severe psoriasis, so that early intervention can be initiated.”
As for additional research, “as an immunologist and dermatologist, I cannot help but think about the possible role the genetic and cytokine pathways involved in psoriasis may be playing in modulating the immune system and/or microbiome, and whether this contributes to a higher risk of infections,” Dr. Robles said. “Just as it was discovered that patients with atopic dermatitis have decreased levels of antimicrobial peptides in their skin, making them susceptible to recurrent bacterial skin infections, we may find that the genetic and immunological changes associated with psoriasis may independently contribute to infection susceptibility,” he noted. “More basic immunology and virology research may one day shed light on this observation.”
The study was supported by Novartis. Lead author Dr. Loft disclosed serving as a speaker for Eli Lilly and Janssen Cilag, other authors disclosed relationships with multiple companies including Novartis, and two authors are Novartis employees. Dr. Robles had no relevant financial disclosures.