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BACKGROUND: There are a limited number of studies comparing psoriasis patients without psoriatic arthritis (PsA) to those with arthritis. Previous results are controversial. OBJECTIVES: To perform a comparative analysis of the phenotype, baseline comorbidities, therapeutic profile and incidence of adverse events (particularly overall adverse events, infections and infestations, malignancies and psychiatric disorders) among psoriatic patients with/without PsA. METHODS: All the patients on the Biobadaderm registry, a prospective inception cohort of psoriasis patients on systemic therapy, were included. Patients were divided into two groups: those with psoriasis without arthritis at the time of entry into the cohort (Pso group) and those with psoriasis and psoriatic arthritis (PsA group) at entry. Patients were followed until the censorship date (last visit in a lost-to-follow-up patient, or 10 November 2015, whichever occurred first). We excluded all the patients who developed any kind of signs and/or symptoms of joint involvement during the follow-up. A descriptive analysis was performed. We estimated incidence ratios (IRR) of adverse events during systemic treatment using a mixed-effects Poisson regression. RESULTS: We included 2120 patients: 1871 (88%) patients with psoriasis without arthritis and 249 (12%) with psoriasis and PsA. The follow-up time was 5020 patients-year in the Pso group and 762 patients-year in the PsA group. Patients with PsA had more comorbidities, particularly hypertension and liver disease; used a higher number of systemic therapies, particularly anti-TNFa drugs and combination therapy; and presented more adverse events (IRR adjusted = 1.29; 95% CI: [1.05-1.58]), particularly serious adverse events (IRR adjusted = 1.51; 95% CI: [1.01-2.26]) and infections/infestations (IRR adjusted = 1.88; 95% CI: [1.27-2.79]), independently of the associated comorbidities and present/past therapies. CONCLUSIONS: Given the differences between patients with psoriasis alone or with psoriasis associated with PsA, patients with psoriasis and PsA should be followed and managed more closely and with specific attention.

Background Biobadaderm is the Spanish registry of psoriasis patients receiving systemic treatment in clinical practice. Objective To compare the safety of biologics and classic systemic treatment. Methods Prospective cohort of patients receiving biologics and classic systemic therapies between 2008 and 2013 in 12 hospitals are included. We registered demographic data, diagnoses, comorbidities, treatments and adverse events (AE). We obtained raw relative risks (RR) for specific AE. Multivariate analysis consisted of Cox models adjusting for age, gender, chronic hepatic disease and previous cancer. Results A total of 1030 patients received biologics (2061 AE in 3681 person-years), 926 patients classic systemic drugs (1015 AE in 1517 person-years). Ninety-three per cent of AE in both groups were non-serious, 6% serious and 0.003% fatal. The age- and gender-adjusted hazard ratio of AE was lower in the biologics group [hazard ratio 0.6 (95% CI: 0.5–0.7)].We found no differences in rates of serious and mortal AE. Some system organ class AE rates differed between both groups. As limitations: Prescription bias might affect the incidence of AE in both groups. Association of drug and AE was based on timing: associations might not be causal. Conclusion Patients receiving biologics had lower risk of AE. We did not find differences in the risk of serious or fatal AE.

Background There are few data on the prevalence of obesity in the general psoriasis population and on the real impact of obesity on the management of psoriasis patients in the clinical setting. Objectives To evaluate the prevalence of overweight and obesity in patients with moderate-to-severe psoriasis compared to the general population and to assess the relationship between Body Mass Index (BMI) and the risk of discontinuing treatment. Methods Patients registered on Biobadaderm, a prospective registry, were grouped according the different categories of BMI and compared to the general Spanish population. Drug survival was analysed considering only drug withdrawal due to lack of effectiveness, remission and adverse events. Results A total of 1162 moderate-to-severe psoriasis patients on systemic conventional or biological treatment were recruited. The prevalence of obesity was found to be significantly higher in psoriasis patients than in the general Spanish population (P

Therapeutic decisions in psoriasis are influenced by disease factors (e.g., severity or location), comorbidity, and demographic and clinical features.We aimed to assess the reliability of a mobile telephone application (MDi-Psoriasis) designed to help the dermatologist make decisions on how to treat patients with moderate to severe psoriasis.We analyzed interobserver agreement between the advice given by an expert panel and the recommendations of the MDi-Psoriasis application in 10 complex cases of moderate to severe psoriasis. The experts were asked their opinion on which treatments were most appropriate, possible, or inappropriate. Data from the same 10 cases were entered into the MDi-Psoriasis application. Agreement was analyzed in 3 ways: paired interobserver concordance (Cohen's κ), multiple interobserver concordance (Fleiss's κ), and percent agreement between recommendations.The mean percent agreement between the total of 1210 observations was 51.3% (95% CI, 48.5-54.1%). Cohen's κ statistic was 0.29 and Fleiss's κ was 0.28. Mean agreement between pairs of human observers only, excluding the MDi-Psoriasis recommendations, was 50.5% (95% CI, 47.6-53.5%). Paired agreement between the recommendations of the MDi-Psoriasis tool and the majority opinion of the expert panel (Cohen's κ) was 0.44 (68.2% agreement).The MDi-Psoriasis tool can generate recommendations that are comparable to those of experts in psoriasis.

A great amount of information on systemic and biologic therapies for moderate to severe psoriasis is now available. However, applying the evidence in numerous clinical scenarios has engendered debate; under these circumstances, the consensus of experts is useful.A scientific committee systematically reviewed the literature relevant to 5 clinical scenarios. An online Delphi survey of dermatologists with experience treating moderate to severe psoriasis was then carried out in order to shed light on questions that remained unresolved by the available evidence.Twenty-three dermatologists responded to the survey and consensus was reached on 37 (56%) of the 66 statements proposed. These results led to consensus on various clinical situations even though firm evidence was lacking. Thus, intermittent therapeutic regimens and strategies for reducing the intensity of treatment are considered appropriate for optimizing biologic treatment and reducing costs. The measurement of drug and antidrug antibody levels should be included routinely when following patients on biologics to treat psoriasis. Concomitant psoriatic arthritis or a history of cardiovascular conditions will influence the choice of biologic; in these situations, an agent with anti-tumor necrosis factor properties will be preferred. Tailored management is important when the patient is pregnant or intends to conceive; drug half-life and disease severity are important factors to take into consideration in these scenarios.A combination of systematic review of the literature and structured discussion of expert opinion facilitates decision-making in specific clinical scenarios.

Introduction The incidence of tuberculosis (TB) or the prevalence of latent tuberculosis infection (LTBI) in psoriasis patients has not been described in the Spanish population. We carried out a study with the objectives: (i) To describe the incidence of TB in patients with psoriasis on systemic treatment in the Spanish population; (ii) To determine the prevalence of LTBI in patients who are candidates for biological treatment; and (iii) To investigate the level of compliance with current recommendations for LTBI and TB screening. Methods Data were obtained from BIOBADADERM (Spanish registry for systemic biological and non-biological treatments in psoriasis). An analysis was performed of the exposed cohort to determine the prevalence of LTBI and to describe compliance with the screening guidelines. Results A total of 1425 patients were registered in BIOBADADERM. They included 793 (56%) patients exposed to biological treatment and 632 (44%) treated with conventional systemic drug. Overall follow-up was 3720 person-years. Of the 793, 20.5% (163) were diagnosed with LTBI before starting biological treatment. The rate of active TB for the exposed cohort was 145 cases × 100 000 patient-years (95% CI 54–389). No case of TB was found in the control group. Screening for LTBI was performed in 83% of the exposed sample. Conclusion Patients with psoriasis who are exposed to biological treatment appear to be at greater risk for tuberculosis. In Spain, up to 20% of patients with psoriasis who are candidates for biological therapy have LTBI. There continues to be a significant percentage of errors in compliance with clinical guidelines.