Background The multi-morbid burden and use of systemic immunosuppressants in people with psoriasis may confer greater risk of adverse COVID-19 outcomes but data are limited. Objective Characterize the course of COVID-19 in psoriasis and identify factors associated with hospitalization. Methods Clinicians reported psoriasis patients with confirmed/suspected COVID-19 via an international registry, PsoProtect. Multiple logistic regression assessed the association between clinical/demographic characteristics and hospitalization. A separate patient-facing registry characterized risk-mitigating behaviours. Results Of 374 clinician-reported patients from 25 countries, 71% were receiving a biologic, 18% a non-biologic and 10% no systemic treatment for psoriasis. 348 (93%) fully recovered from COVID-19, 77 (21%) were hospitalized and nine (2%) died. Increased hospitalization risk was associated with older age (multivariable-adjusted OR 1.59 per 10 years, 95% CI 1.19-2.13), male sex (OR 2.51, 95% CI 1.23-5.12), non-white ethnicity (OR 3.15, 95% CI 1.24-8.03) and comorbid chronic lung disease (OR 3.87, 95% CI 1.52-9.83). Hospitalization was more frequent in patients using non-biologic systemic therapy than biologics (OR 2.84, 95% CI 1.31-6.18). No significant differences were found between biologic classes. Independent patient-reported data (n=1,626 across 48 countries) suggested lower levels of social isolation in individuals receiving non-biologic systemic therapy compared to biologics (OR 0.68, 95% CI 0.50-0.94). Conclusion In this international moderate-severe psoriasis case series, biologics use was associated with lower risk of COVID-19-related hospitalization than non-biologic systemic therapies, however further investigation is warranted due to potential selection bias and unmeasured confounding. Established risk factors (being older, male, non-white ethnicity, comorbidities) were associated with higher hospitalization rates. Clinical Implications We identify risk factors for COVID-19-related hospitalization in psoriasis patients, including older age, male sex, non-white ethnicity and comorbidities. Use of biologics was associated with lower hospitalization risk than non-biologic systemic therapies.
Methotrexate (MTX) is an effective treatment for psoriasis but concerns regarding the development of liver fibrosis prevent optimal use. The primary objective of this systematic review was to assess whether MTX use increases the risk of developing fibrosis in people with psoriasis. Searches were performed on Medline, Embase, the Cochrane Database and Clinical Trials Register from inception until September 2013 for studies including at least two liver biopsies in people with psoriasis. Double extraction using predefined data fields was performed. Randomized controlled trials and observational studies were considered. Statistical analysis was performed using Review Manager 5. Quality of observational studies was assessed using a study quality bias checklist. Eight observational studies met the inclusion criteria (n = 429 patients). The pooled risk difference (RD) of developing significant liver fibrosis was 0·09 [95% confidence interval (CI) -0·03 to 0·20]. The RD for developing 'any fibrosis' was 0·22 (95% CI 0·04-0·41). The RD for cirrhosis was 0·04 (95% CI 0·02-0·07). There was no clear association between cumulative dose of MTX and fibrosis. Obesity, diabetes and alcohol use were under-reported. The quality of the included studies was weak and the degree of selection bias means the results are not generalizable to all patients with psoriasis taking MTX. High-quality, population-based studies that consider potential confounders common in psoriasis population are justified for better prediction of the subset of patients at risk of liver fibrosis. In this highly selected review population, MTX use appears to contribute to the development of 'any' fibrosis without clear evidence of risk stratifiers.
People with psoriasis taking methotrexate may be at increased risk of developing liver fibrosis compared with the general population. Noninvasive methods of detecting fibrosis have been widely adopted but their clinical utility is uncertain. To evaluate the diagnostic accuracy of noninvasive methods to detect fibrosis compared with liver biopsy (reference standard) in people with psoriasis taking methotrexate. A systematic search using Ovid/Medline, Embase, Cumulative Index to Nursing and Allied Health Literature, the Cochrane Library and Clinical Trials Register was performed. Diagnostic cohorts or case-control studies of adults taking or being considered for methotrexate therapy were considered. Study quality was evaluated using the Quality Assessment tool for Diagnostic Accuracy Studies (QUADAS-2). Pooled data analysis was performed using RevMan 5.1. Bayesian meta-analysis was conducted using Markov chain Monte Carlo simulation. Seventeen studies were included. Sensitivity and specificity were 38% and 83% for standard liver function tests (LFTs), 74% and 77% for procollagen-3 N-terminal peptide (P3NP), 60% and 80% for Fibroscan(®) (Echosens, France, www.echosens.com), and 55% and 49% for ultrasound. Confidence in these results is limited owing to low-quality data; old, small studies displayed significant selection bias and significant variation in the prevalence of fibrosis. No studies were identified evaluating recently developed markers. The clinical utility of LFTs, P3NP and liver ultrasound is poor. Therefore if these tests are used in isolation, a significant proportion of patients with liver fibrosis may remain unidentified. Larger prospective studies are required in this population to validate newer non-invasive methods.
IMPORTANCE Advanced liver fibrosis is a precursor to cirrhosis, a leading cause of mortality. People with severe psoriasis are at risk for liver disease, but our understanding of advanced fibrosis in individuals with psoriasis is limited.OBJECTIVES To describe the prevalence of and evaluate the clinical factors associated with advanced liver fibrosis in people with severe psoriasis. DESIGN, SETTING, AND PARTICIPANTS The Co-morbidities in Severe Psoriasis study, a prospective observational cohort study in a large center serving London and Southeast England, was conducted from October 18, 2012, to April 2, 2015; 400 adults with severe psoriasis (Psoriasis Area Severity Index score, Ն10) were recruited from outpatient clinics. Statistical analysis was conducted from October 2, 2016, to March 3, 2017. MAIN OUTCOMES AND MEASURES The primary outcome was a diagnosis of advanced liver fibrosis determined by transient elastography, a noninvasive criterion standard test. Clinical factors evaluated included psoriasis-specific and metabolic indices, alcohol use, and methotrexate exposure. RESULTSOf 400 patients recruited (108 women and 289 men; mean [SD] age, 49.5 [13] years), 333 had a successful transient elastography scan and were included in final analysis. Forty-seven patients (14.1%; 95% CI, 10.4%-17.9%) had advanced liver fibrosis as diagnosed by transient elastography. The clinical factors that produced the best-fit model for advanced fibrosis were central obesity (waist circumference), insulin resistance, aspartate aminotransferase level, platelet count, psoriasis disease severity, and reduced alcohol use (R 2 = 0.54). CONCLUSIONS AND RELEVANCEFindings from this study suggest that advanced fibrosis is common in severe psoriasis. Abdominal obesity (by waist circumference) and insulin resistance were associated with the presence of advanced fibrosis. Longitudinal work to characterize the hepatic sequelae of central obesity, insulin resistance, and inflammation as well as the influence of systemic drugs (methotrexate and biologics) will inform future personalized therapeutic decision-making.
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