Over one-third of psoriasis patients have PsA

About two-thirds of patients with psoriasis in a national registry also had psoriatic arthritis (PsA) and/or psoriasis in at least one challenging-to-treat (CTT) area, and one-quarter had both, according to Kristina Callis Duffin, MD, of the University of Utah, Salt Lake City, and her associates.

Their analysis included 2,042 psoriasis patients who were enrolled in the Corrona Psoriasis Registry between April 2015 and May 2018 and initiated biologic treatment during that time. The mean age was 49.6 years, 80% of the patients were white, and 51% were obese. Mean disease duration was 19.9 years and 89.2% of the patients had moderate to severe disease. CTT areas include the scalp, nails, and palmoplantar areas.

A total of 784 people in the cohort (38.4%) had PsA, 778 (38.1%) had scalp psoriasis, 326 (16.0%) had nail psoriasis, 223 (10.9%) had palmoplantar psoriasis, and 535 (26.2%) had both PsA and psoriasis in at least two CTT areas. The most common combinations were PsA plus scalp psoriasis and PsA plus nail and scalp psoriasis.

“These results indicate a need to further characterize patients with psoriasis who have PsA and CTT areas and evaluate the impact of these factors to better understand their treatment needs,” the investigators noted.

The Corrona registry has been supported by numerous pharmaceutical companies, and the study authors reported numerous financial relationships with industry; two authors are Novartis employees.

Secukinumab effective for slowing radiographic progression in active PsA

Treatment with secukinumab significantly reduced radiographic progression in patients with active PsA, according to Désirée van der Heijde, MD, PhD, professor of rheumatology at Leiden University Medical Center, and her associates.

The results come from an analysis of the FUTURE 5 trial, a study of 996 patients with active PsA despite previous NSAID treatment, disease-modifying antirheumatic drug treatment, or anti–tumor necrosis factor (TNF) therapy. Patients were randomized to receive 300 mg subcutaneous secukinumab with loading dose, 150 mg secukinumab with loading dose, 150 mg secukinumab without loading dose, or placebo, at baseline; weeks 1, 2, 3, and 4; then every 4 weeks.

After 24 weeks, the mean change in van der Heijde–modified Total Sharp Score for PsA was 0.08 for the 300-mg secukinumab group (P less than .01), 0.17 for the 150-mg secukinumab with loading dose group (P less than .05), a reduction of 0.09 for the 150-mg secukinumab without loading dose group (P less than .01), and 0.50 for the placebo group. Lower radiographic progression was seen regardless of prior anti-TNF or concomitant methotrexate treatment.

The study was funded by Novartis. The study authors reported financial disclosures with numerous companies; five authors are Novartis employees.

Tildrakizumab sustains efficacy in plaque psoriasis treatment after 1 year

Nearly all patients receiving the interleukin-23 inhibitor tildrakizumab for the treatment of moderate to severe plaque psoriasis maintained or improved their Psoriasis Area and Severity Index (PASI) response rate after 52 weeks of treatment, compared with their response after 28 weeks.

The analysis, conducted by Boni E. Elewski, MD, of the University of Alabama at Birmingham, and her associates, included 352 patients who received 100 mg tildrakizumab and 313 who received 200 mg tildrakizumab. Treatment was received at baseline, at 4 weeks, and then every 12 weeks afterward.

At week 28, the proportions of patients achieving PASI 100, PASI 90-99, PASI 75-89, and PASI 50-74 at week 28 were 25.9%, 38.4%, 25.3%, and 10.5%, respectively, among those treated with the 100-mg dose. The proportions were 24.6%, 24.3%, 19.5%, and 31.6%, respectively, among those treated with the 200-mg dose.

In patients who achieved at least PASI 90 on either dose at week 28, 88.9%-89.4% maintained that response at week 52. For patients with PASI 75-89, 39.3%-40.4% maintained that response and 33.7%-41.0% achieved a PASI 90 response. At week 52, in patients with PASI 50-74, 20.2%-29.7% achieved at least a PASI 90, 52.5%-64.9% achieved PASI 75, and only 2.6% of patients on either dose had fallen below PASI 50.

Four study authors reported being clinical investigators on studies sponsored by Merck and Sun Pharmaceuticals; five authors are employees of Sun Pharmaceuticals.

Halobetasol/tazarotene combination most effective for plaque psoriasis treatment

A fixed combination of halobetasol propionate 0.01% and tazarotene 0.045% lotion provided a synergistic effect over either component on its own for the treatment of plaque psoriasis, according to Leon H. Kircik, MD, of Indiana University, Indianapolis, and his associates.

The investigators performed a post hoc analysis of 212 patients with moderate to severe plaque psoriasis randomized to receive either the halobetasol/tazarotene combination, halobetasol only, tazarotene only, or vehicle only for 8 weeks, with follow-up at 12 weeks. Treatment success was based on the proportion of patients who achieved at least a 2-grade improvement in the Investigator Global Assessment (IGA) score, IGA scores of “clear” or “almost clear,” and percent change from baseline in IGA multiplied by Body Surface Area (BSA) composite score (IGAxBSA). “Synergy was calculated by summing up the contribution of the individual active ingredients (HP and TAZ) to overall efficacy and comparing to the efficacy achieved with HP/TAZ lotion relative to vehicle,” the authors explained.

Relative to vehicle, treatment success for halobetasol/tazarotene after 8 weeks was 42.8%, 23.6% for halobetasol alone, and 9.0% for tazarotene alone. After 12 weeks, the difference was 31.3%, 14.1%, and 5.9%, respectively. The percent change in IGAxBSA scores from baseline after 8 weeks, relative to vehicle, were 51.6%, 37.3%, and 3.3%, respectively. After 12 weeks, the change was 47.3%, 25.7%, and 8.6%, respectively.

After 8 weeks, the synergy ratio for treatment success and IGAxBSA scores for the halobetasol/tazarotene combination was 1.3. After 12 weeks, the synergy ratio for treatment success was 1.6 and the ratio for IGAxBSA scores was 1.4.

“By combining two agents into one once-daily formulation, this novel formulation reduces the number of product applications and may help patient adherence,” the study authors noted.

Dr. Kircik reported serving as a consultant and investigator for Valeant Pharmaceuticals. One study author is an employee of Bausch Health and Ortho Dermatologics, and another is an employee of Dow Pharmaceutical Sciences (a division of Valeant).

Brodalumab demonstrates low immunogenicity in moderate to severe psoriasis

The immunogenicity of brodalumab in patients with moderate to severe plaque psoriasis was low and did not compromise the efficacy or safety profile of the drug, according to Kristian Reich, MD, of Dermatologikum Berlin and SCIderm Research Institute in Hamburg, Germany, and his associates.

Data from a 12-week, phase 2 trial with a 352-week, open-label extension and three 52-week phase 3 trials were included in the analysis. Antidrug antibodies (ADAs) were tested, and positive samples were further analyzed for neutralizing ADAs by a cell-based assay.

Out of the 4,461 patients who received brodalumab, 122 (2.7%) were positive for ADAs after starting brodalumab. The incidence rate ranged from 1.9% to 3.4% between all dosing groups (140 mg, 210 mg, variable dosing, and 210 mg of brodalumab after ustekinumab). In 58 (1.4%) of patients, ADAs were transient. No patients had neutralizing ADAs, and no evidence of altered pharmacokinetics, loss of efficacy, or changes in the safety profile of brodalumab in subjects positive for ADAs was seen.

No significant difference was seen in the incidence rate of hypersensitivity or injection site reactions in brodalumab, compared with placebo or ustekinumab. The most common injection site reactions were injection site pain, erythema, and bruising.

The study was supported by Amgen. The study authors reported numerous disclosures. Two authors are employees of Leo Pharma, one author is a former employee of the company.

Secukinumab improves patient-reported outcomes in CTT psoriasis

Treatment with secukinumab significantly improved patient-reported outcomes such as fatigue, itch, pain, and quality of life measures in patients with CTT psoriasis after 6 months, according to Jerry Bagel, MD, of the Psoriasis Treatment Center of Central New Jersey, East Windsor, and his associates.

A total of 68 patients with psoriasis localized to at least one CTT area who were enrolled in the Corrona Psoriasis Registry from April 15, 2015, through May 10, 2018, and were receiving secukinumab for the entirety of the 6-month study period were included in the analysis. Patient-reported outcomes included in the analysis were fatigue, itch, pain, Dermatology Quality of Life Index (DLQI) score, and Work Productivity and Activity Impairment (WPAI) scale.

The mean age at enrollment was 51.2 years and almost 80% of patients were white. Mean psoriasis duration was 21.8 years and nearly half had PsA.

Visual analog scale scores improved over baseline for fatigue (mean, 23.2 vs. 33.2; P = .01), itch (20.9 vs. 49.6; P less than .0001), and pain (12.1 vs. 33.8; P less than .0001). DLQI scores also improved (2.9 vs. 8.1; P less than .0001), and the proportion of patients who reported that psoriasis had at least a moderate effect on their life was reduced after 6 months (22.1% vs. 59.7%; P less than .0001).

Based on WPAI results, patients experienced significant improvements in the percentage of daily activities impaired (mean, 9.5% vs 17.5%; P = .0075); of the 42 patients who were employed, both impairment percentage (3.7% vs. 11.2%; P = .0148) and percentage of work hours affected (4.9% vs. 11.9%; P = .0486) were reduced from baseline.

“These results are consistent with previous reports from secukinumab clinical trials; however, additional real-world studies are needed to evaluate the long-term effectiveness of secukinumab for improving [patient-reported outcomes] in patients with psoriasis in CTT areas,” the authors noted.

The Corrona registry has been supported by numerous pharmaceutical companies, and several study authors reported various disclosures with industry. Two authors are Novartis employees. The study was supported by Novartis; the company participated in the interpretation of data and review and approval of the abstract.

These posters were presented at Skin Disease Education Foundation’s annual Las Vegas Dermatology Seminar. SDEF and this news organization are owned by the same parent company.