Tumor Necrosis Factor Inhibitor Primary Failure Predicts Decreased Ustekinumab Efficacy in Psoriasis Patients.

BACKGROUND: Additional studies are needed to examine the efficacy of ustekinumab in psoriasis patients who have previously been exposed to tumor necrosis factor inhibitors (TNFi). OBJECTIVE: To examine the predictive effect of TNFi primary failure and the number of TNFi exposures on the efficacy of ustekinumab in psoriasis treatment. METHODS: This retrospective study examined 44 psoriasis patients treated at the Tufts Medical Center Department of Dermatology between January 2008 and July 2014. Patients were selected if they were treated with ustekinumab and had ≥ 1 previous TNFi exposure. The following subgroups were compared: patients with vs without a previous TNFi primary failure, and patients with one vs multiple previous TNFi exposures. The efficacy measure used was the previously validated Simple Measure for Assessing Psoriasis Activity (S-MAPA), which is calculated by the product of the body surface area and physician global assessment. The primary outcome was the percentage improvement S-MAPA from course baseline at week 12 of ustekinumab treatment. Secondary outcomes were the psoriasis clearance, primary failure, and secondary failure rates with ustekinumab treatment. RESULTS: Patients with a previous TNFi primary failure had a significantly lower percentage improvement in S-MAPA score at week 12 of ustekinumab treatment compared with patients without TNFi primary failure (36.2% vs 61.1%, P=.027). Multivariate analysis demonstrated that this relationship was independent of patient demographics and medical comorbidities. Patients with multiple TNFi exposures had a non-statistically significant lower percentage S-MAPA improvement at week 12 (40.5% vs 52.9%, P=.294) of ustekinumab treatment compared with patients with a single TNFi exposure. CONCLUSIONS: Among psoriasis patients previously exposed to TNFi, a history of a previous TNFi primary failure predicts a decreased response to ustekinumab independent of patient demographics and medical comorbidities.

Prevalence of the metabolic syndrome in children with psoriatic disease.

Adults with psoriasis have a greater risk of developing metabolic syndrome (MetS) and cardiovascular disease (CVD), but few studies have investigated the prevalence of MetS and other risk factors for CVD in children with psoriasis. In an assessor-blinded study, 20 children ages 9-17 years with a current or previously documented history of psoriasis involving 5% or more of their body surface area or psoriatic arthritis were compared with a cohort of age- and sex-matched controls with benign nevi, warts, or acne. MetS, our primary endpoint, was defined by the presence of abnormal values in at least three of the following measures: triglycerides, high-density lipoprotein cholesterol (HDL-C), fasting blood glucose (FBG), waist circumference, and blood pressure. Secondary endpoints included high-sensitivity C-reactive protein (hs-CRP), total cholesterol (TC), and low-density lipoprotein cholesterol (LDL-C). Thirty percent (6/20) of children with psoriasis met the criteria for MetS, compared with 5% (1/20) of the control group (p < 0.05). Subjects with psoriasis had higher mean FBG (91.1 mg/dL) than the control group (82.9 mg/dL) (p = 0.01). There were no statistically significant differences in the other four components of MetS, BMI, BMI percentile, hs-CRP, TC, or LDL-C. The results of this trial demonstrate that children with psoriasis have higher rates of MetS than age- and sex-matched controls. It may therefore be important to evaluate children with psoriasis for components of MetS to prevent future CVD morbidity and mortality.

Investigator-initiated, open-label trial of ustekinumab for the treatment of moderate-to-severe palmoplantar psoriasis.

BACKGROUND: Palmoplantar psoriasis is a variant of psoriasis resistant to many forms of treatment. METHODS: Twenty subjects with moderate-to-severe psoriasis of the palms and soles, 50% with pustules at baseline, were treated with ustekinumab at weeks 0, 4, and 16. All subjects had previously failed topical corticosteroids. Dosing was 45 mg subcutaneously for subjects weighing <100 kg and 90 mg for subjects weighing ≥100 kg. The primary endpoint was the percent of subjects achieving clinical clearance at week 16, defined as Palm-Sole Physician's Global Assessment ≤1. The study received Tufts Medical Center IRB approval. RESULTS: After 16 weeks of treatment, 35% (7/20) of subjects achieved clinical clearance. Sixty percent (12/20) improved two or more points on the Palm-Sole Physician's Global Assessment scale. Sixty-seven percent (6/9) of those receiving the 90 mg ustekinumab dose achieved clinical clearance compared with nine percent (1/11) receiving 45 mg (p = 0.02). At 24 weeks, mean values showed 56% improvement in Dermatology Life Quality Index, and 34% improvement in pain Visual Analogue Scale score (all p < 0.05). LIMITATIONS: Assessment tools for palmoplantar psoriasis are not yet validated. Five subjects withdrew or were lost to follow-up. CONCLUSION: This study demonstrates that ustekinumab dosed at 90 mg is effective in controlling signs and symptoms of palmoplantar psoriasis.

A phase 2, open-label, investigator-initiated study to evaluate the safety and efficacy of apremilast in subjects with recalcitrant allergic contact or atopic dermatitis.

OBJECTIVE: Evaluate the efficacy and safety of apremilast, a novel phosphodiesterase 4 (PDE4) inhibitor, in subjects with recalcitrant moderate to severe atopic dermatitis (AD) or allergic contact dermatitis (ACD). RESEARCH DESIGN AND METHODS: This was a proof-of-concept, phase 2, open-label, single institution trial that evaluated the efficacy and safety of apremilast, 20 mg twice daily, for twelve weeks, in ten subjects with either AD and/or ACD. The primary endpoint was a ?2 point improvement in Investigator Global Assessment (IGA) score after 12 weeks of treatment. Secondary endpoints included a 75% reduction in the Eczema Assessment Severity Index (EASI-75), EASI-50, and the maximum EASI response. RESULTS: The primary endpoint of improvement in IGA by two or more points was met by 20% of subjects. Ten percent of subjects achieved EASI-75 and another 10% reached EASI-50. All subjects tolerated apremilast well with no serious adverse events or withdrawal due to side effects. Common adverse events associated with apremilast included headache, nausea, and soft stool. LIMITATIONS: This study was limited by its small sample size and lack of a comparison group to serve as a control. CONCLUSIONS: Apremilast was well tolerated in all subjects. Apremilast was minimally effective in AD and ACD and results were inferior to previous trials of apremilast in psoriasis.

Assessor-blinded study of the metabolic syndrome and surrogate markers of increased cardiovascular risk in children with moderate-to-severe psoriasis compared with age-matched population of children with warts.

Adult patients with psoriasis have an increased prevalence of the metabolic syndrome (MetS) and cardiovascular disease (CVD) risk factors due to elevations of Tumor Necrosis Factor and other inflammatory cytokines.1,2 Recently, higher rates of hyperlipidemia, obesity, hypertension, and diabetes mellitus were seen in patients with juvenile psoriasis.3 Here, we report the interim results of an ongoing study of MetS and CVD risk factors in pediatric psoriasis patients.