A retrospective claims analysis confirms the cost of most biologic agents for psoriasis is increasing more rapidly than medical inflation

Use of Efficiency Frontiers to Align Prices and Clinical Benefits of Biologic Therapies for Plaque Psoriasis

Importance

The US lacks a systematic approach for aligning drug prices with clinical benefit, and traditional cost-effectiveness analysis (CEA) faces political obstacles. The efficiency frontier (EF) method offers policymakers an alternative approach.

Objective

To assess how the EF approach could align prices and clinical benefits of biologic medications for plaque psoriasis and estimate price reductions in the US vs 4 peer countries: Australia, Canada, France, and Germany.

Design and Setting

This health economic evaluation used the EF approach to compare the prices and clinical benefits of 11 biologics and 2 biosimilars for plaque psoriasis in the US, Australia, Canada, France, and Germany. Data were collected from February to March 2023 and analyzed from March to June 2023.

Main Outcome Measures

EFs were constructed based on each biologic's efficacy, measured using the Psoriasis Area and Severity Index (PASI) 90 response rate, and annual treatment cost as of January 2023; US costs were net of estimated manufacturer rebates. Prices based on the EF were compared with traditional CEA-based prices calculated by the Institute for Clinical and Economic Review at a threshold of $150 000 per quality-adjusted life-year gained.

Results

Among 13 biologics, PASI 90 response rates ranged from 17.9% (etanercept) to 71.6% (risankizumab); US net annual treatment costs ranged from $1664 (infliximab-dyyb) to $79 277 (risankizumab). The median (IQR) net annual treatment cost was higher in the US ($34 965 [$20 493-$48 942]) than prerebate costs in Australia ($9179 [$6691-$12 688]), Canada ($15 556 [$13 017-$16 112]), France ($9478 [$6637-$11 678]), and Germany ($13 829 [$13 231-$15 837]). The US EF included infliximab-dyyb (PASI 90: 57.4%; annual cost: $1664), ixekizumab (PASI 90: 70.8%; annual cost: $33 004), and risankizumab (PASI 90: 71.6%; annual cost: $79 277). US prices for psoriasis biologics would need to be reduced by a median (IQR) of 71% (31%-95%) to align with those estimated using the EF; the same approach would yield smaller price reductions in Canada (41% [6%-57%]), Australia (36% [0%-65%]), France (19% [0%-67%]), and Germany (11% [8%-26%]). Except for risankizumab, the EF-based prices were lower than the prices based on traditional CEA.

Conclusions and Relevance

This economic evaluation showed that for plaque psoriasis biologics, using an EF approach to negotiate prices could lead to substantial price reductions and better align prices with clinical benefits. US policymakers might consider using EFs to achieve prices commensurate with comparative clinical benefits, particularly for drug classes with multiple therapeutic alternatives for which differences can be adequately summarized by a single outcome measurement.

Barriers to Care Among Sexual and Gender Minority Individuals With Chronic Inflammatory Skin Diseases in the US

Importance

Research on the prevalence of barriers to care among sexual and gender minority (SGM) patients with chronic inflammatory skin diseases (CISDs) in the US is limited.

Objective

To compare the prevalence of cost and noncost barriers to care among SGM and non-SGM patients with CISDs and to analyze the prevalence of barriers based on SGM status and race and ethnicity.

Design, Setting, and Participants

A cross-sectional study of health care access and utilization survey data collected by the National Institutes of Health's All of Us Research Program between May 31, 2017, and July 1, 2022, was conducted. Participants were adults aged 18 years or older with CISDs who enrolled in All of Us directly online or through partner health care practitioner organizations located across the US.

Exposures

Chronic inflammatory skin diseases, sexual orientation and gender identity, and race and ethnicity.

Main Outcome and Measures

The main outcome was the experience of cost and noncost barriers to health care among SGM patients with CISDs. Multivariable logistic regression was used to examine the association of SGM status with experiencing barriers to care.

Results

This study included 19 743 patients with CISDs; 1877 were SGM patients (median age, 40.5 years [IQR, 28.7-57.9 years]; 1205 [64.2%] assigned female sex at birth) and 17 866 were non-SGM patients (median age, 57.1 years [IQR, 40.8-68.1 years]; 13 205 [73.9%] assigned female sex at birth). Compared with non-SGM patients, SGM patients with CISDs were significantly more likely to delay specialist care (adjusted odds ratio [AOR], 1.23; 95% CI, 1.03-1.47), mental health care (AOR, 1.62; 95% CI, 1.37-1.91), and filling a prescription (AOR, 1.30; 95% CI, 1.11-1.52) because of cost. In addition, SGM patients with CISDs were significantly more likely than non-SGM patients to delay care because of transportation issues (AOR, 1.49; 95% CI, 1.22-1.80) and not having a health care practitioner who shares the same background with regard to race and ethnicity, religion, native language, sexual orientation, and gender identity (AOR, 1.39; 95% CI, 1.19-1.62). Sexual and gender minority patients with CISDs were also significantly more likely than non-SGM patients to report not always being treated with respect by their health care practitioners (AOR, 1.47; 95% CI, 1.30-1.65).

Conclusions and Relevance

The findings of this cross-sectional study of survey data suggest that SGM patients with CISDs may be disproportionately affected by cost and noncost barriers to health care. Dermatologists and other health care practitioners caring for SGM patients with CISDs have an important role in helping to address these barriers and larger systemic issues for SGM patients at both the patient and system levels.