Cost-Effectiveness of Biologics for Allergic Diseases

Food allergy yardstick: Where does omalizumab fit?

Food allergy management has greatly evolved in the last several years, moving from passive approaches, such as strict food allergen avoidance, to more active treatments, including regulatory approval of the first specifically indicated immunotherapy product (for peanut) in 2020. In 2024, a second therapy, omalizumab, received regulatory approval for the treatment of 1 or more IgE-mediated food allergies, providing clinicians with multiple treatment options to offer patients and families. With this expanded armamentarium of food allergy treatment options, the practicing clinician requires detailed knowledge of benefits and risks of omalizumab, how omalizumab fits into the management landscape, and how to use shared decision-making to optimize therapy. This yardstick aims to provide the clinician with a review of data leading to omalizumab's food allergy indication and an evidence-based expert opinion approach regarding on how best to use this and other therapies available to optimize patient management.

Addressing health disparities in food allergy: A Position Statement of the AAAAI Prior Authorization Task Force

Self-reported food allergies (FAs) affect approximately 8% of the US pediatric and approximately 10% of the adult population, which reflects potentially disproportionate increases among ethnically and racially minoritized groups. Multiple gaps and unmet needs exist regarding FA disparities. There is reported evidence of disparities in FA outcomes, and the FA burden may also be disproportionate in low-income families. Low family income has been associated with higher emergency care spending and insecure access to allergen-free food. Pharmacoinequity arises in part as a result of structural racism still experienced by historically marginalized populations today. Historically redlined communities continue to experience greater rates of neighborhood-level air pollution and indoor allergen exposure, lack of transportation to medical appointments, poverty, and lower prescription rates of necessary medications. Clinical research needs racially and ethnically diverse participation to ensure generalizability of research findings and equitable access to medical advances, but race reporting in clinical trials has been historically poor. Addressing health disparities in FA is a priority of clinical care, with professional organizations such as the American Academy of Allergy, Asthma & Immunology having a prominent role to play in mitigating the challenges faced by these individuals. In this position statement we recommend some key steps to address this important issue.

Patient-Centered Practice Guidelines: GRADEing Evidence to Incorporate Certainty, Balance Between Benefits and Harms, Equity, Feasibility, and Cost-Effectiveness

The practice of medicine in recent years has emphasized the use of evidence-based clinical guidelines to help inform treatment decisions. Since its development in 2004, the GRADE (Grading of Recommendations Assessment, Development and Evaluation) approach has offered a systematic process for reviewing and summarizing the certainty of evidence found in the medical literature regarding various treatment options. To develop truly patient-centered care guidelines, this appraisal of the certainty of evidence must be combined with an understanding of the balance between benefits and harms, patient preferences, equity, feasibility, cost-effectiveness, and policy implications. This review examines each of these domains in detail, exploring the process and benefits of developing relevant, patient-focused guidelines directly applicable to the practice of modern medicine.

The Cost-Effectiveness of Omalizumab for Treatment of Food Allergy

BACKGROUND

Omalizumab is an anti-IgE therapy newly approved by the Food and Drug Administration for allergen agnostic treatment of single or multiple food allergies in patients aged 1 year or older.

OBJECTIVE

Evaluate the cost-effectiveness of omalizumab as a food allergy treatment.

METHODS

We evaluated health and economic outcomes in Markov cohorts of simulated food allergic infants randomized to receive omalizumab using a 15-year horizon. Monte Carlo simulation was used (n = 40,000 subjects) to evaluate cost-effectiveness from a societal perspective, incorporating both a family-level and individual-level analysis. We included family-level analysis to incorporate a broad perspective for health utility change, given treatment effects likely benefit all parties at home (eg, caregivers, siblings), not just the patient, representing the sum of changes in all such persons. Supplemental analyses explored lower omalizumab cost and home initiation. We performed deterministic and probabilistic sensitivity analyses.

RESULTS

In the family-level cohort analysis, omalizumab exceeded cost-effectiveness thresholds ($185,183/quality-adjusted life-years [QALY]). In a comparison of the omalizumab strategy (OMA) with the non-omalizumab strategy, the cost of OMA exceeded the non-omalizumab strategy ($315,020 vs $136,609) with greater incremental effectiveness (12.668 vs 11.699 QALY). In the individual-level analysis, the cost-effectiveness of OMA was $573,698/QALY. In base-case assessments, OMA was cost-effective (willingness to pay, $100,000/QALY) at a health state utility (HSU) improvement of 0.265. The value-based cost of OMA ranged from $14,166 to $23,791 when it was considered at the individual and family-unit levels. Requiring OMA administration in the clinic was not cost-effective (incremental cost-effectiveness ratio, $260,239).

CONCLUSIONS

In the base case and at current pricing, omalizumab is not cost-effective, but it could be at a lower retail price or when use creates large health utility shifts in the family and patient.

Pharmacoequity and Biologics in the Allergy Clinic: Providing the Right Care, at the Right Time, Every Time, to Everyone

Pharmacoequity refers to equity in access to pharmacotherapy for all patients and is an especially large barrier to biologic agents in patients with allergic diseases. Value-based care models can prompt clinicians to address social determinants of health, promoting pharmacoequity. Pharmacoequity is influenced by numerous factors including socioeconomic status, which may be mediated through insurance status, educational attainment, and access to specialist care. In addition to lower socioeconomic status, race and ethnicity, age, locations isolated from care systems, and off-label indications for biologic agents all constitute barriers to pharmacoequity. Whereas pharmaco-inequity is more apparent for expensive biologics, it also affects many other allergy treatments including epinephrine autoinjectors and SMART for asthma. Current programs aimed at alleviating cost barriers are imperfect. Patient assistance programs, manufacturer-sponsored free drug programs, and rebates often increase the complexity of care, with resultant inequity, particularly for patients with lower health literacy. Ultimately, single silver-bullet solutions are elusive. Long-term improvement instead requires a combination of research, advocacy, and creative problem-solving to design more intelligent and efficient systems that provide timely access to necessary care for every patient, every time.

Significance of Self-Injectable Biologics in Japanese Patients with Severe Allergic Diseases: Focusing on Pen-Type Devices and Copayment

Patients and Methods

A questionnaire survey was administered to 18, 14, and 3 patients introduced to home self-injection of dupilumab or mepolizumab using a pen-type device for atopic dermatitis, asthma alone, and asthma plus chronic rhinosinusitis with nasal polyps, respectively.

Results

All but one participant wished to continue self-injection. Most participants affirmed the reduction in copayment (88.6%) and saving time and labor for hospital visits (88.6%). Six patients who received dupilumab complained of side effects, but all, except for one, continued the treatment. Of the 13 patients who had previously used a syringe-type device, 10 preferred the pen type because of its ease of use, while 3 (23%) preferred the syringe type because of the self-adjustable injection speed for pain control.

Conclusion

Administration of biologics using pen-type devices is easier, and the introduction of home self-injection leads to a reduction in outpatient visits and copayment.

Association of Comorbid Asthma and the Efficacy of Bioabsorbable Steroid-eluting Sinus Stents Implanted After Endoscopic Sinus Surgery in Patients with Chronic Rhinosinusitis with Nasal Polyps

OBJECTIVE

To identify factors affecting the efficacy of steroid-eluting sinus stents implanted after endoscopic sinus surgery (ESS) in patients with chronic rhinosinusitis with nasal polyps (CRSwNP).

METHODS

We performed a post-hoc analysis of a randomized self-controlled clinical trial on post-operative implantation of bioabsorbable steroid-eluting stents in patients with CRSwNP. Univariate logistic regression analysis was conducted to identify which of the following factors affect the response to post-operative stent implantation: sex, serum eosinophil levels, history of prior surgery, endoscopic scores, and comorbid conditions (asthma and allergic rhinitis). The primary outcome was the rate of post-operative intervention on day 30, and the secondary outcome was the rate of polypoid tissue formation (grades 2-3) on days 14, 30, and 90.

RESULTS

A total of 151 patients with CRSwNP were included in the post-hoc analysis. Asthma was identified as the only risk factor for a poor response to steroid-eluting sinus stents on post-operative day 30, with an odds ratio of 23.71 (95% CI, 2.81, 200.16; P=0.004) for the need for post-operative intervention and 19 (95% CI, 2.20, 164.16; P=0.003) for moderate-to-severe polypoid tissue formation. In addition, the asthmatic group showed higher rates of post-operative intervention and polypoid tissue formation than the non-asthmatic group on post-operative day 30. Blood eosinophil levels were not identified as a risk factor for poor outcomes after stent implantation.

CONCLUSION

Comorbid asthma, but not blood eosinophil level, impairs the efficacy of steroid-eluting sinus stents in the short term after ESS in patients with CRSwNP.

Quality of life in children with skin disease: A Spanish sample

INTRODUCTION

The impact of skin diseases on quality of life varies widely, and some can have an impact similar to that of asthma or cystic fibrosis.

MATERIAL AND METHODS

We conducted a cross-sectional, observational and descriptive study with the aim of describing the degree to which quality of life was affected in paediatric patients managed in a dermatology clinic by means of the Children's Dermatology Life Quality Index (CDLQI).

RESULTS

In our study, the skin disease with the greatest impact on quality of life was atopic dermatitis, chiefly on account of symptoms like pruritus and insomnia. It was followed by acne, mainly due to the associated negative feelings (shame, sadness, etc.). Quality of life in patients with viral warts and molluscum contagiosum was mostly affected by the treatment, chiefly based on cryotherapy. Most patients with nevi or café-au-lait spots did not have a decreased quality of life, although up to one third of them had negative feelings in relation to their skin disease.

DISCUSSION

Atopic dermatitis was the common skin disease that caused the greatest impairment in quality of life in our sample, although other diseases also had an impact on different dimensions of quality of life. We ought to underscore the recommendation to use less painful treatments than cryotherapy for viral warts and molluscum contagiosum, as the impairment in quality of life in paediatric patients with these conditions was mainly due to the treatment.

Cost-Effectiveness of Fractional Exhaled Nitric Oxide Suppression Testing as an Adherence Screening Tool Among Patients With Difficult-to-Control Asthma

BACKGROUND

Approximately 50% of adults on long-term asthma medication are nonadherent. Current methods to detect nonadherence have had limited effect. Fractional exhaled nitric oxide suppression testing (FeNOSuppT) has demonstrated clinical effectiveness as an adherence screening tool to detect poor adherence to inhaled corticosteroids in difficult-to-control asthma prior to initiation of expensive biologic therapy.

OBJECTIVE

Estimate the cost effectiveness and budget impact of FeNOSuppT as a screen prior to the initiation of biologic therapy among U.S. adults with difficult-to-control asthma and high fractional exhaled nitric oxide (≥45 ppb).

METHODS

A decision tree simulated the progression of a cohort of patients over a 1-year time horizon into 1 of 3 states ([1] discharged from or [2] remain in specialist care; or [3] progress to biologics). Two strategies, with and without FeNOSuppT, were examined and the incremental net monetary benefit estimated using a discount rate of 3% and a willingness-to-pay threshold of $100,000 per quality-adjusted life year (QALY). Sensitivity analysis and a budget impact analysis were also undertaken.

RESULTS

In the baseline scenario, FeNOSuppT prior to the initiation of biologic therapy was associated with lower costs ($4,435/patient) and fewer QALYs (0.0023 QALY/patient) compared with no FeNOSuppT over 1 year and was considered cost effective (incremental net monetary benefit = $4,207). The FeNOSuppT was consistently found to be cost effective across a range of scenarios and in deterministic and probabilistic sensitivity analyses. Assuming differential levels of FeNOSuppT uptake (20%-100%), this was associated with budget savings ranging from USD $5 million to $27 million.

CONCLUSIONS

The FeNOSuppT is likely to be cost effective as a protocol-driven, objective, biomarker-based tool for identifying nonadherence in difficult-to-control asthma. This cost effectiveness is driven by cost savings from patients not progressing to expensive biologic therapy.

Factors to Consider in Prescribing Asthma Biologic Therapies to Children

The increasing availability of biologics, both by expanding age indications and by development of new therapies, provides additional options to treat children and adolescents with severe asthma. However, the evidence for these biologics in these populations is limited compared with that for adult studies. As such, before initiation of therapy, possible alternative therapies that can also provide asthma control, confirmation of the diagnosis of asthma, management of comorbidities, and assessment of adherence should be explored. The choice of a biologic should be a shared decision-making process between providers and families, balancing biologic efficacy, goals of care, administration, and ability to treat multiple conditions. Response to treatment should be periodically evaluated not only to ensure an ineffective treatment is not continued but also to consider when to potentially discontinue therapy should it be beneficial. The utilization of biologics in children and adolescents with severe asthma also leads to unanswered questions on their role in disease remission and long-term outcomes.

Comparing the psychometric properties of the EQ-5D-3L and EQ-5D-5L descriptive systems and utilities in atopic dermatitis

BACKGROUND

Atopic dermatitis (AD) is a common chronic inflammatory skin disorder affecting up to 10% of adults. The EQ-5D is the most commonly used generic preference-accompanied measure to generate quality-adjusted life years (QALYs) for economic evaluations.

OBJECTIVES

We aimed to compare psychometric properties of the three-level and five-level EQ-5D (EQ-5D-3L and EQ-5D-5L) in adult patients with AD.

METHODS

In a multicentre cross-sectional study, 218 AD patients with a broad range of severity completed the EQ-5D-3L, EQ-5D-5L, Dermatology Life Quality Index (DLQI) and Skindex-16. Disease severity outcomes included the Investigator Global Assessment, Eczema Area and Severity Index and the objective SCORing Atopic Dermatitis.

RESULTS

A good agreement was established between the two EQ-5D versions with an intraclass correlation coefficient of 0.815 (95% CI 0.758-0.859, p < 0.001). Overall, 33 different health state profiles occurred in the EQ-5D-3L and 84 in the EQ-5D-5L. Compared to the EQ-5D-3L, ceiling effect was reduced for the mobility, self-care, usual activities and pain/discomfort dimensions by 4.6-11.5%. EQ-5D-5L showed higher average relative informativity (Shannon's evenness index: 0.64 vs. 0.59). EQ-5D-5L demonstrated better convergent validity with EQ VAS, DLQI and Skindex-16. The two measures were similar in distinguishing between groups of patients based on disease severity and skin-specific quality of life with a moderate or large effect size (η2 = 0.083-0.489).

CONCLUSION

Both instruments exhibited good psychometric properties in AD; however, the EQ-5D-5L was superior in terms of ceiling effects, informativity and convergent validity. We recommend the use of the EQ-5D-5L to measure health outcomes in clinical settings and for QALY calculations in AD.

Value-Based, Cost-Effective Care: The Role of the Allergist-Immunologist

Asthma and allergic disease impact millions of patients and are associated with high costs. Up to 30% of all medical care involves wasted spending. Across the spectrum of care provided by the allergist-immunologist, there are opportunities to improve value and reduce medical waste. Several examples highlight this reality. Evidence suggests that most patients may receive cost-effective care in the management of chronic spontaneous urticaria without the need for laboratory testing. For patients with asthma, although a single maintenance and reliever therapy approach may be cost-effective, insurance-mandated therapy changes are not, and may harm patients. Biologics may be very effective in improving asthma control but are too expensive for this indication-as demonstrated by cost-effectiveness analyses and highlighted by the Institute of Clinical and Economic Review, which concluded that the value-based price for asthma biologics ranges between $6500 and 14,3000 per year. Early introduction may prevent food allergy, but screening before first introduction is neither necessary nor cost-effective, although early salvage food oral immunotherapy may result in improved quality of life and cost savings. Evidence does not support the presence of allergic disease as a risk factor for anaphylaxis to coronavirus disease 2019 vaccination, and risk-stratified vaccination approaches do not appear cost-effective. Allergen immunotherapy is a very cost-effective treatment option. The practice of allergy-immunology has continued to evolve in recent years and can provide a leading example of high-value practice.

Pharmacokinetic equivalence of CT-P39 and reference omalizumab in healthy individuals: A randomised, double-blind, parallel-group, Phase 1 trial

BACKGROUND

CT-P39 is being developed as a biosimilar of reference omalizumab. This study aimed to assess the pharmacokinetic equivalence of CT-P39 to European Union-approved and United States-licensed reference omalizumab (EU- and US-omalizumab, respectively).

METHODS

This two-part, randomised, parallel-group, double-blind Phase 1 trial (NCT04018313) was conducted in healthy individuals with a total immunoglobulin E (IgE) level ≤100  international units (IU)/ml at screening. In part 2, described herein, participants were randomised (1:1:1) to receive a single 150 mg subcutaneous dose of CT-P39, EU-omalizumab, or US-omalizumab. The primary endpoint was pharmacokinetic equivalence in terms of area under the concentration-time curve (AUC) from time zero to the last quantifiable concentration (AUC0-last ), AUC from time zero to infinity (AUC0-inf ), and maximum serum concentration (Cmax ). Equivalence was concluded if 90% confidence intervals (CIs) of the geometric least-squares means ratios were contained within the predefined 80%-125% equivalence margin. Additional pharmacokinetic parameters, pharmacodynamics, safety, and immunogenicity were also evaluated.

RESULTS

Overall, 146 participants were randomised (CT-P39, N = 47; EU-omalizumab, N = 49; US-omalizumab, N = 50). For all primary pharmacokinetic parameters, 90% CIs for pairwise treatment comparisons were within the 80%-125% equivalence margin, demonstrating pharmacokinetic equivalence. Decreases in free IgE and increases in total IgE serum concentrations were comparable across groups. CT-P39 was well tolerated. Safety endpoints were comparable across groups: there were no treatment-related serious adverse events, deaths, or discontinuations due to treatment-emergent adverse events.

CONCLUSIONS

CT-P39 was well tolerated and demonstrated pharmacokinetic equivalence with EU-omalizumab and US-omalizumab following administration of a single dose in healthy individuals.

Trends and Perspectives of Biological Drug Approvals by the FDA: A Review from 2015 to 2021

Despite belonging to a relatively new class of pharmaceuticals, biological drugs have been used since the 1980s, when they brought about a breakthrough in the treatment of chronic diseases, especially cancer. They conquered a large space in the pipeline of the pharmaceutical industry and boosted the innovation portfolio and arsenal of therapeutic compounds available. Here, we report on biological drug approvals by the US Food and Drug Administration (FDA) from 2015 to 2021. The number of drugs included in this class grew over this period, totaling 90 approvals, with an average of 13 authorizations per year. This figure contrasts with previous periods, which registered between 2 and 8 approvals per year. We highlight the great potential and advantages of biological drugs. In this context, these therapeutics show high efficacy and high selectivity, and they have brought about a significant increase in patient survival and a reduction of adverse reactions. The development and production of biopharmaceuticals pose a major challenge because these processes require cutting-edge technology, thereby making the drugs very expensive. However, we believe that, in the near future, biological medicines will be more accessible and new drugs belonging to this class will become available as new technologies emerge. Such advances will enhance the production of these biopharmaceuticals, thereby making the process increasingly profitable and less expensive, thereby bringing about greater availability of these drugs.

The Role of Access and Cost-Effectiveness in Managing Asthma: A Systematic Review

Background

Inconsistent and unequal access to medical care is an issue that predates the COVID19 pandemic, which only worsened the problem. Limited access to care from asthma specialists and other specialists treating comorbid diseases may adversely affect asthma.

Objective

The purpose of this review is to identify health disparities associated with access to care for asthma, and cost-effectiveness of therapies and interventions addressing this health disparity.

Methods

A narrative systematic review was undertaken using MeSH searches of English language articles published in CINAHL, Scopus, or PubMed.

Results

A total of 725 articles were identified. Barriers recognized from the literature included access to diagnostic spirometry, access to specialists, medication formulary restrictions, and issues leading to medical nonadherence. Telemedicine, school-based health care interventions, digital applications, and non–office-based digital spirometry could be used to address these gaps in access to asthma care while potentially being cost-effective.

Conclusion

With the widespread adoption of telemedicine because of the pandemic, and adoption of other mobile services, we now have potential tools that can increase access to asthma care, which can help address this health care inequity. Evidence is limited, but favorable, that some of these tools may be cost-effective.

Psychedelics and Anti-inflammatory Activity in Animal Models

The serotonin (5-hydroxytryptamine, 5-HT) 2A receptor is most well known as the common target for classic psychedelic compounds. Interestingly, the 5-HT_2A receptor is the most widely expressed mammalian serotonin receptor and is found in nearly every examined tissue type including neural, endocrine, endothelial, immune, and muscle, suggesting it could be a novel and pharmacological target for several types of disorders. Despite this, the bulk of research on the 5-HT_2A receptor is focused on its role in the central nervous system (CNS). Recently, activation of 5-HT_2A receptors has emerged as a new anti-inflammatory strategy. This review will describe recent findings regarding psychedelics as anti-inflammatory compounds, as well as parse out differences in functional selectivity and immune regulation that exist between a number of well-known hallucinogenic compounds.

Efficacy of House Dust Mite Sublingual Immunotherapy in Patients with Atopic Dermatitis: A Randomized, Double-Blind, Placebo-Controlled Trial

BACKGROUND

Sensitization to house dust mites (HDMs) is frequent in patients with atopic dermatitis.

OBJECTIVE

To investigate the efficacy of sublingual immunotherapy (SLIT) with Dermatophagoides pteronyssinus extract in patients with atopic dermatitis sensitized to HDM.

METHODS

In this randomized, double-blind, placebo-controlled trial, we enrolled 91 patients 3 years or older, with SCORing Atopic Dermatitis (SCORAD) score greater than or equal to 15 and positive skin test result and/or IgE to D pteronyssinus. Patients were stratified according to age (<12 and ≥12 years) to receive HDM SLIT or placebo for 18 months. Primary outcome was a greater than or equal to 15-point decrease in SCORAD score. Secondary outcomes were decreases in SCORAD and objective SCORAD, Eczema Area and Severity Index, visual analog scale for symptoms, and pruritus scale scores; Investigator's Global Assessment 0/1; and decrease greater than or equal to 4 points in Dermatology Life Quality Index. Background therapy was maintained.

RESULTS

A total of 66 patients completed the study (35 HDM SLIT, 31 placebo). After 18 months, 74.2% and 58% of patients in the HDM SLIT group and the placebo group, respectively, showed greater than or equal to 15-point decrease in SCORAD score (relative risk, 1.28; 95% CI, 0.89-1.83). Significant SCORAD score decreases from baseline of 55.6% and 34.5% in HDM SLIT and placebo groups (mean difference, 20.4; 95% CI, 3.89-37.3), significant objective SCORAD score decreases of 56.8% and 34.9% in HDM SLIT and placebo groups (mean difference, 21.3; 95% CI, 0.66-41.81), and more patients with Investigator's Global Assessment 0/1 in the HDM SLIT group as compared with the placebo group (14 of 35 vs 5 of 31; relative risk, 2.63; 95% CI, 1.09-6.39) were observed at 18 months.

CONCLUSIONS

Our results suggest that HDM SLIT may be effective in HDM-sensitized patients as an add-on treatment for atopic dermatitis.

Cost-effectiveness analysis of dupilumab among patients with oral corticosteroid-dependent uncontrolled severe asthma in Japan

Background: Asthma is a common, chronic inflammatory airway disorder, with up to 1,177,000 people receiving asthma treatment in Japan. Dupilumab is a first-in-class, monoclonal antibody for the treatment of atopic diseases, including persistent asthma. The objective of this study was to assess the cost-effectiveness of dupilumab, compared with other biologics, as add-on treatment to background therapy in patients aged ≥12 years with uncontrolled, persistent asthma in Japan.Methods: A life-time Markov cohort model was used to conduct cost-effectiveness analysis from the Japanese healthcare payer perspective with an annual discount rate of 2%. Dupilumab was compared with benralizumab and mepolizumab, and against omalizumab (as a hypothetical scenario). Inputs were informed by dupilumab clinical trials (VENTURE [NCT02528214] and QUEST [NCT02414854] trials), the literature, official Japanese sources and expert opinions.Results: The base case results suggest that treatment with dupilumab leads to fewer severe exacerbations and increased life-years (LYs) and quality-adjusted LYs (QALYs) than benralizumab and mepolizumab. At a willingness-to-pay (WTP) threshold of ¥5,000,000 per QALY gained, dupilumab was the dominant strategy (lower cost, increased QALYs) versus benralizumab, and cost-effective versus mepolizumab with an incremental cost effectiveness ratio (ICER) of ¥1,010,921 (US$9,190, US$1=¥110). Versus omalizumab, dupilumab was not cost-effective (ICER of ¥10,802,368 [US$98,203]).Conclusions: In Japan, dupilumab, as an add-on to background therapy, is economically dominant compared with benralizumab, and cost-effective versus mepolizumab.

Economic impact of Juvenile Idiopathic Arthritis: a systematic review

BACKGROUND

Juvenile Idiopathic Arthritis (JIA) requires complex care that generate elevated costs, which results in a high economic impact for the family. The aim of this systematic review was to collect and cluster the information currently available on healthcare costs associated with JIA after the introduction of biological therapies.

METHODS

We comprehensively searched in MEDLINE, EMBASE, Web of Science, Scopus, and Cochrane Databases for studies from January 2000 to March 2021. Reviewers working independently and in duplicate appraised the quality and included primary studies that report total, direct and/or indirect costs related to JIA for at least one year. The costs were converted to United States dollars and an inflationary adjustment was made.

RESULTS

We found 18 eligible studies including data from 6,540 patients. Total costs were reported in 10 articles, ranging from $310 USD to $44,832 USD annually. Direct costs were reported in 16 articles ($193 USD to $32,446 USD), showing a proportion of 55 to 98 % of total costs. Those costs were mostly related to medications and medical appointments. Six studies reported indirect costs ($117 USD to $12,385 USD). Four studies reported costs according to JIA category observing the highest in polyarticular JIA. Total and direct costs increased up to three times after biological therapy initiation. A high risk of reporting bias and inconsistency of the methodology used were found.

CONCLUSION

The costs of JIA are substantial, and the highest are derived from medication and medical appointments. Indirect costs of JIA are underrepresented in costs analysis.