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Open Access 22.09.2021 | Original Research

Short-Term Efficacy of Biologic Therapies in Moderate-to-Severe Plaque Psoriasis: A Systematic Literature Review and an Enhanced Multinomial Network Meta-Analysis

verfasst von: Kyle Fahrbach, Grammati Sarri, David M. Phillippo, Binod Neupane, Samantha E. Martel, Sandeep Kiri, Kristian Reich

Erschienen in: Dermatology and Therapy | Ausgabe 6/2021

Abstract

Introduction

Many targeted, systemic therapies have been developed for treatment of moderate-to-severe psoriasis (PsO). A network meta-analysis (NMA) allows for comparison between treatments not directly compared in randomized controlled trials (RCT). This study’s objective was to compare the short-term (10–16 weeks) clinical efficacy according to the Psoriasis Area and Severity Index (PASI) among approved biologic treatments for moderate-to-severe PsO using a novel (enhanced) NMA model.

Methods

A systematic literature review (SLR) of RCTs for patients with moderate-to-severe PsO was conducted. English publications in MEDLINE, Embase, and The Cochrane Library up to March 2019 were searched. An enhanced multinomial Bayesian NMA was performed to simultaneously adjust for baseline risk and utilize the conditional nature of the PASI (50, 75, 90, and 100) levels. The model relaxes typical constraints that all treatments must have the same ranks across PASI levels.

Results

The SLR resulted in 319 relevant publications, of which 72 publications from 73 RCTs reporting 10- to 16-week data for at least one PASI response level (30,314 total patients) were included. Interleukin (IL) inhibitors (risankizumab, ixekizumab, brodalumab, secukinumab, and guselkumab) were the best performing treatments for achieving all PASI levels. Etanercept was outperformed by the other subcutaneous tumor necrosis factor α inhibitors. Application of an enhanced NMA model that allowed treatment rankings to differ by PASI level tested the robustness of results of previous NMAs in PsO.

Conclusion

The results of this model confirmed that IL inhibitors are likely the best short-term treatment choices for improving all PASI levels.

Supplementary file1 (DOCX 759 kb)

Supplementary Information

The online version contains supplementary material available at https://doi.org/10.1007/s13555-021-00602-z.

Key Summary Points

Why carry out this study?

Psoriasis is a chronic inflammatory multisystem disease which has a substantial negative impact on the patients’ quality of life and physical and psychologic functioning. Thus, it represents a major economic burden to health systems owing to the disease’s chronicity, high prevalence, and disabling effect

The use of biologic therapy has revolutionized the management of moderate-to-severe psoriasis offering healthcare providers and patients with a multitude of highly effective and tolerable treatment options. Nevertheless, head-to-head comparisons between the different biologic treatments in psoriasis are limited. This subsequently leads to uncertainty about their comparative efficacy and limits the clinicians’ and patients’ ability to make informed decisions about treatment choices. Therefore, we sought to conduct a network meta-analysis (NMA) which allows for comparison between multiple treatments that are not directly compared in a randomized controlled trial (RCT) and produces estimates of treatment effects and rankings that may be used in decision-making

What did the study ask?/What was the hypothesis of the study?

The current study conducted a systematic literature review and an NMA to compare the short-term efficacy at 10–16 weeks (according to the Psoriasis Area and Severity Index [PASI]) among the approved biologic systemic therapies for moderate-to-severe psoriasis

What was learned from the study?

What were the study outcomes/conclusions? (data)

The biologics were associated with better probability of achieving all PASI response levels compared with non-biologics and placebo. All biologics except etanercept had > 80% probability of achieving PASI50. Interleukin inhibitors (risankizumab 150 mg, ixekizumab 80 mg, brodalumab 210 mg, secukinumab 300 mg, and guselkumab 100 mg) were the best-performing treatments for achieving all levels of short-term PASI (50, 75, 90, and 100). Certolizumab pegol 400 mg and infliximab 5 mg/kg performed the best among the tumor necrosis factor-α inhibitors

Introduction

Psoriasis (PsO) is a chronic, inflammatory, multisystem disease with a prevalence of 2–3% in Western countries. Its most common (up to ~ 90% of cases) phenotype, plaque PsO, is characterized by scaly and often itchy red patches [1]. PsO severity can be classified as mild, moderate, or severe, depending on its location, the grading of skin signs, the surface area involved, and the impact on the individual [2]. At least 20% of patients have disease that involves > 5% of the body or affects crucial body regions, including the hands, feet, face, or genitals [3]. Severe disease is associated with increased mortality; estimated life expectancy is reduced by 3.5 years in men and 4.4 years in women [4]. Severe PsO also has a substantial impact on quality of life [5], with extensive emotional and psychosocial effects on patients, and represents a major economic burden to health systems owing to the disease’s chronicity, high prevalence, and disabling effect. This heavy toll is compounded by the fact that many patients have associated joint disease (psoriatic arthropathy) and comorbidities such as depression, anxiety, and cardiovascular disease [5].

Current guidelines recommend oral systemic drugs (e.g., dimethyl fumarate, methotrexate, ciclosporin, and apremilast) and targeted biologic therapies for chronic disease control in patients with moderate-to-severe PsO [6]. During the last 2 decades, different classes of targeted therapies have been developed for PsO including tumor necrosis factor alpha (TNF-α) and interleukin (IL) inhibitors. Anti TNF-α treatments include certolizumab pegol (CZP), etanercept, infliximab, and adalimumab. Among the TNF-α inhibitors, CZP has a different structure, as it lacks the immunoglobin G (IgG) fragment crystallizable (Fc). This structural difference results in advantageous solubility and stability and has demonstrated minimal to no placental transfer from mothers to infants due to the absence of the region that binds to the neonatal Fc receptor for IgG (FcRn) [7‐9]. The second class of antibodies that has been developed targets pro-inflammatory cytokines, including the IL-12/23p40 antibody (ustekinumab), and, more recently, inhibitors of IL-17A (secukinumab, ixekizumab), IL-17RA (brodalumab), and IL-23p19 (guselkumab, tildrakizumab, risankizumab).

Ample research has been conducted in placebo-controlled trials to evaluate efficacy and safety, but head-to-head comparisons among the biologic treatments are lacking. A network meta-analysis (NMA) allows for comparison between multiple treatments that are not directly compared in a randomized controlled trial (RCT) and produces estimates of treatment effects and rankings that may be used in decision-making [10].

The current study conducted a systematic literature review (SLR) on short-term efficacy among the approved biologic systemic therapies for moderate-to-severe PsO and conducted analyses using a novel enhancement to the standard multinomial NMA model with baseline risk adjustment. This approach relaxes the assumption of a constant probit difference between Psoriasis Area and Severity Index (PASI) cutoffs across treatments, allowing treatments to have different rankings across PASI levels. The analysis focused on the efficacy data at the end of induction treatment (10–16 weeks), specifically, the proportions of patients achieving commonly reported percentage changes with the PASI relative to baseline (PASI50, PASI75, PASI90, and PASI100). Although several efficacy outcomes have been developed in PsO, our analysis selected the use of PASI as it is the most widely reported outcome in PsO trials and has been used as a decision tool for the use of biologics in healthcare decision-making [6]. A high correlation effect has been shown between PASI and other patient-reported outcomes (such as Dermatology Life Quality Index), which demonstrates PASI's role as a primary efficacy end point in PsO trials [11].

Methods

SLR Overview

The SLR followed well-established recommendations of the Cochrane Collaboration [12, 13], and it systematically identified evidence from RCTs (phase II–IV) investigating the short-term efficacy (as measured by all PASI level) of biologic therapies (at dosages approved by the European Medicines Agency) at the end of induction treatment phase (10–16 weeks; Table 1) for adults with moderate-to-severe plaque PsO. Non-biologic systemic treatments were included in the NMA to enhance and strengthen the evidence network. The SLR results aligned with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension statement for systematic reviews incorporating NMAs of healthcare interventions [14].

Table 1

List of drugs and approved dosages

Drugs	Dosages
Systemic biologics
Adalimumab	40 mg EOW
Brodalumab	210 mg Q2W
Certolizumab pegol	400 mg or 200 mg Q2W
Etanercept	50 mg or 25 mg Q2W
Guselkumab	100 mg Q8W
Infliximab	5 mg/kg Q8W
Ixekizumab	80 mg Q4W
Risankizumab	150 mg Q12W
Secukinumab	150 mg or 300 mg Q4W
Tildrakizumab	100 mg or 200 mg Q12W
Ustekinumab	45 mg or 90 mg Q12W^a
Systemic non-biologics
Acitretin	0.4 mg/kg
Apremilast	30 mg BID
Cyclosporine	2.5–5 mg/kg/day
Dimethyl fumarate	720 mg
Methotrexate	7.5–15 mg

BID twice a day, EOW every other week, Q2W every 2 weeks, Q4W every 4 weeks, Q8W every 8 weeks, Q12W every 12 weeks

^aUstekinumab was analyzed as 45 mg or 90 mg pooled or 90 mg separate, based on study-level reporting

MEDLINE, Embase, the Cochrane Central Register of Controlled Trials, the Cochrane Database of Systematic Reviews, and PsycINFO were searched to identify English-language studies conducted on humans and published through March 5, 2019. Searches used a combination of terms and keywords for moderate-to-severe PsO, approved treatments for moderate-to-severe PsO, and study design (RCT; Tables S1–S4). Search terms and strategies were adapted to each database using the appropriate indexing terms. The proceedings of seven relevant conferences (2016 to 2018) were also searched, and searches were validated by cross-checking the reference lists of previous SLRs and NMAs (published between 2016 and 2018) conducted for the same topic to identify any studies not captured by this SLR.

Abstract and full-text screening was performed by two independent investigators guided by the inclusion and exclusion criteria of the protocol (Table S5). Any discrepancies were resolved by a third, senior investigator. A single investigator extracted data on the study design, types of bias, patient population (including demographic characteristics, comorbidities such as psoriatic arthritis [PsA]), disease duration, prior use of biologics, treatment details, and outcomes of interest for each included RCT. All data were validated by a second, senior investigator using a pre-designed template. The quality of all RCTs was assessed using the Cochrane Risk of Bias Assessment Tool 2.0 [15]. When more than one publication was identified for the same RCT, a single publication (the one with the most complete or most recent information) was selected to avoid double-counting of patients. This article is based on previously conducted studies and does not contain any new studies with human participants or animals performed by any of the authors.

Study Characteristics and NMA Assumptions

The key assumption in any NMA is that the underlying relative treatment effects (between any two specific treatments, after ignoring the sampling error) are or would be the same in all trial populations [16]. The characteristics of the included trials were assessed to ensure NMA assumptions were met (Table 2). The presence of potential effect modifiers [17], such as disease duration, baseline PASI, and presence of comorbidities, was assessed to confirm similarity among the included trials. Differences in placebo rates were of interest, since relative treatment effect size in a study may depend on the placebo response; these differences are presented in Fig. 1. To allow for network connectivity and based on clinical expert review, we assumed that small differences in treatment doses and schedule in the non-biologic treatments cyclosporine and methotrexate do not impact relative effects.

Table 2

Criteria for psoriasis area severity index analysis

PICOS	Inclusion for analysis	Exclusion criteria
Population	Patients with moderate-to-severe PsO with or without comorbid PsA Studies providing subgroup data for those moderate-to-severe plaque PsO	Studies in patients primarily with PsA or with a treatment focus for PsA
Intervention/Comparator	Any protocol-approved intervention and dose	Studies in biosimilar compounds
Outcomes	Any combination of PASI 50, 75, 90 and/or 100 presented as discrete/categorical outcomes	Mean change in PASI score
Time points	10–16 weeks [99]	< 10 weeks or > 16 weeks
Study design	Randomized controlled trials	Open label extension or follow-up studies
Pre-defined sensitivity analysis	Previous systemic biologic treatment	Other subgroups (i.e., patient demographics, comorbid conditions)
Other restrictions	Randomized controlled trials with sample size > 30 patients

PASI Psoriasis Area Severity Index, PICOS population, intervention/comparator, outcomes, study design, PsA psoriatic arthritis, PsO psoriasis

Statistical Analysis

We explored clinical heterogeneity and the performance of NMA models using unadjusted and adjusted models per the National Institute for Health and Care Excellence (NICE) Decision Support Unit recommendations [18‐20]. A Bayesian multinomial likelihood (probit link) NMA model was conducted based on the number of patients in four PASI categories: patients achieving 50%, 75%, 90%, and 100% improvement at 10–16 weeks. The PASI provides a combined assessment of lesion severity and the area affected into one score (ranging from 0 [no disease] to 72 [highest burden of disease]).

Two modifications were made to this NMA model. We added a component for baseline risk, per NICE guidelines, as relative effects of drugs in autoimmune diseases are often dependent on baseline risk (i.e., the placebo rate and relative effect of a treatment vs. placebo are likely related) [18]. Given prior research and expert agreement, a baseline risk model was assumed to be the most clinically valid. We decided a priori that, barring convincing evidence to the contrary, the base-case model should include a parameter for baseline risk, given supporting evidence in recent publications and how common the adoption of placebo-adjusted NMA models is in PsO comparative evidence synthesis [17, 21, 22]. Models without baseline risk were explored in a sensitivity analysis.

The other modification allowed flexibility around the key assumption in the standard multinomial model (i.e., that each treatment has the same probit difference between PASI cutoffs PASI cutoffs—e.g., in probit terms, each treatment has the same conditional difficulty to advance to PASI90 given achievement on PASI75. This assumption allows ‘borrowed strength’ across PASI cutoffs, but it also leads to the effect that all treatments will have the same treatment rank for each PASI level. Our modification added a random-effects (RE) component that allowed each treatments’ increase in difficulty to the next-highest PASI cutoff to vary around a common mean, thus allowing ‘borrowed strength’ across PASI cutoffs but also allowing treatments to have different efficacies (and thus different rankings) for different levels of PASI. This enhanced model is referred to as the ‘REZ’ model because it adds an RE component to the parameter \(z\), which reflects the difficulty to go from one PASI cutoff to the next. More details, including exemplar model code, are provided in the Supporting Information.

All analyses were run with fixed-effects (FE) and RE modeling for relative treatment effects, for a total of eight scenarios (models) tested (crossing FE/RE for treatment effects with inclusion/exclusion of baseline risk and standard vs. REZ modeling). Binomial analyses with a logit link were also conducted for all four PASI responses, as sensitivity analyses. However, in these binomial analyses (especially of PASI50 or PASI100), some interventions were not compared because of lack of trial data.

In all Bayesian NMAs, non-informative priors were used for all non-RE parameters. In the RE models, a Uniform(0,1) prior was used for τ (the square root of the treatment effect variance, i.e., the heterogeneity standard deviation [SD]). In the REZ model, a Uniform(0, 0.5) prior was used for \({\sigma }_{zT}\) (the square root SD around the value between probit cutoffs). Sensitivity analyses around these values (Uniform(0,0.25) and Uniform(0,1)) were tested for any sensitivity to the choice of prior, but none were found (likely due to the large size of the dataset).

All Bayesian analyses were carried out with Markov chain Monte Carlo simulations, with 50,000 discarded burn-in iterations followed by 50,000 iterations for parameter estimation. Convergence was confirmed by evaluating the three-chain, Brooks-Gelman-Rubin plots [23, 24] and values of \(\widehat{R}\) (potential scale reduction factor [24], considered converged if \(\widehat{R}\) < 1.05 for all parameters being estimated) as well as the ratios of Monte Carlo error to the SDs of the posteriors. The median and (2.5th and 97.5th) percentiles of the posterior samples for each effect were used as an estimate of the effect (e.g., probit differences between treatments) and its 95% credible interval (CrI). These posterior samples were also used to obtain the rank probability of a treatment being the best, the probability of a treatment being better than each comparator, and each treatment’s surface under the cumulative ranking curve index [25]. A separate natural history model [20], using the most recent, robust placebo data (placebo arms with n ≥ 50 patients in studies published 2013 or later) to ensure that extrapolated response proportions reflect current practice [26‐87] estimated an ‘anchor’ placebo rate for PASI50 of 17.9%, allowing the models to estimate PASI probabilities for each treatment for each PASI level relative to this anchor.

Goodness of fit of the eight analytic models was compared using the posterior mean residual deviance and deviance information criteria (DIC) [18]. A model with a DIC smaller by > 5 points is generally considered a better-fitting model [88]. Bayesian NMAs of multinomial models were conducted in JAGS (version 4.3.0), and binomial NMAs were conducted in OpenBUGS (version 3.2.3).

Network inconsistency was assessed using an unrelated mean effect model, as recommended in NICE Technical Support Documents [89]. Residual deviance in each arm in each study was also obtained in the multinomial model (for which average deviance over all PASI responses was computed) to assess absolute fit to the data. Arm-level deviances from different models were investigated, as badly fitting data contribute to high heterogeneity, inconsistency, or both in a network; however, no substantive examples of inconsistency or heterogeneity were detected.

Similar analyses were carried out in a subgroup of RCTs in which populations or subpopulations were not previously treated with biologics (100% of patients who were previously treated or naïve or ≥ 90%). There were insufficient studies/subgroup data to conduct analyses on previously treated patients.

Results

SLR Search Results

The electronic database searches yielded 4135 publications, and 78 references were retrieved from the review of conference proceedings. After screening, 319 publications met the inclusion criteria for the broad SLR reporting clinical outcomes of treatments for moderate-to-severe plaque PsO. Among these, 72 publications (across 73 RCTs) covering 30,314 patients reported results for at least one PASI level (50, 75, 90, and or 100) at 10 to 16 weeks and were included in the base case NMA. Figure 2 summarizes the flow of included studies in the SLR and NMA, and Fig. 3 presents the NMA network diagram.

Study and Patient Characteristics

Eight of the 73 included RCTs were phase II, 2 were phase II/III, 51 were phase III or IV, and 12 did not report their phases. All had similar inclusion/exclusion criteria and definitions of PsO severity. The proportion of patients with comorbid PsA (in mixed populations) ranged from 2.4 to 55.8% (trials were excluded if all patients had comorbid PsA). Sample sizes ranged from 40 to 1306 patients, with most studies analyzing at least 100 patients. Details on patient characteristics are presented in Table 3. Sixty-three trials were deemed to have low risk of bias, seven were rated as having some concerns, and three had a high risk of bias. The main driver of bias was missing outcome data for some patients (i.e., lack of intent-to-treat analyses). Studies had wide variation in reported placebo rates, justifying the baseline-risk adjustment model to the extent that placebo rates are related to relative effect vs. placebo (Fig. 1). Summary assessments for each domain and the overall risk of bias are summarized in Table S6.

Table 3

Study and patient characteristics of studies included in the base-case network meta-analysis

Study (phase)	Primary end point (weeks)	Severity definition	Intervention(s) and comparators	Age in years: mean (SD)	Male (%)	PsA (%)	Disease duration (years)	Percent with prior therapy biologic/non-biologic
Griffiths (2010) [49] ACCEPT (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Etanercept 50 mg BIW	45.7 (13.4)	70.9	27.4	18.8	11.8/NR
			Ustekinumab 45 mg Q12W	45.1 (12.6)	63.6	29.7	18.9	12.4/NR
			Ustekinumab 90 mg Q12W	44.8 (12.3)	67.4	27.4	18.7	10.4/NR
Papp (2016) [86] AMAGINE 1 (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Brodalumab 210 mg Q2W	46.0 (12)	73.0	26.0	20.0	46.0/NR
Papp (2016) [86] AMAGINE 1 (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Placebo	47.0 (13)	73.0	29.0	21.0	45.0/NR
Lebwohl (2015) [54] AMAGINE 2 [100] (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Ustekinumab 45 or 90 mg Q12W	45.0 (13)	68.0	17.0	19.0	28.0/NR
			Brodalumab 210 mg Q2W	45.0 (13)	69.0	19.0	19.0	29.0/NR
			Placebo	44.0 (13)	71.0	17.0	18.0	29.0/NR
Lebwohl (2017) [54] AMAGINE 3 [100] (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Placebo	44.0 (13)	66.0	19.0	18.0	24.0/NR
			Ustekinumab 45 or 90 mg Q12W	45.0 (13)	68.0	20.0	18.0	24.0/NR
			Brodalumab 210 mg Q2W	45.0 (13)	69.0	20.0	18.0	25.0/NR
Antiga (2010) [101] (NR)	12	PASI ≥ 10 BSA ≥ 10%	Etanercept 50 mg BIW	31.0–63.0	40.0	NR	NR	NR/NR
Antiga (2010) [101] (NR)	12	PASI ≥ 10 BSA ≥ 10%	Acitretin 0.4 mg/kg/day	27.0–58.0	50.0	NR	NR	NR/NR
Asahina (2010) [26] (Phase II/III)	24	PASI ≥ 12 BSA ≥ 10%	Adalimumab 80 mg Q2W	44.2 (14.3)	81.4	18.6 – 55.8	14.0	0*/NR
Asahina (2010) [26] (Phase II/III)	24	PASI ≥ 12 BSA ≥ 10%	Placebo	43.9 (10.8)	89.1	17.4 – 54.3	15.5	0*/NR
Bachelez (2015) [27] (Phase III)	12	PASI ≥ 12 BSA ≥ 10%	Etanercept 50 mg BIW	42.0	70.0	21.0	18.0	11.0/NR
Bachelez (2015) [27] (Phase III)	12	PASI ≥ 12 BSA ≥ 10%	Placebo	46.0	66.0	24.0	17.0	11.0/NR
Bagel (2012) [102] (NR)	12	PASI ≥ 10 BSA ≥ 10%	Etanercept 50 mg BIW	Median (range): 39.0 (18.0–71.0)	53.2	NR	17.5	NR
Bagel (2012) [102] (NR)	12	PASI ≥ 10 BSA ≥ 10%	Placebo	Median (range): 42.0 (18.0–70.0)	58.1	NR	11.9	NR
Mrowietz (2017) [61] BRIDGE (Phase III)	16	PASI ≥ 10 BSA ≥ 10% PGA ≥ 3	DMF up to 720 mg	44.0 (15.2)	62.4	NR	NR	2.9*/NR
Mrowietz (2017) [61] BRIDGE (Phase III)	16	PASI ≥ 10 BSA ≥ 10% PGA ≥ 3	Placebo	44.0 (14.3)	67.9	NR	NR	2.2*/NR
Cai (2017) [32] (Phase III)	12	NR	Adalimumab 40 mg Q2W	43.1 (11.9)	75.1	12.7	14.8	0/NR
Cai (2017) [32] (Phase III)	12	NR	Placebo	43.8 (12.5)	66.7	11.5	15.8	0/NR
Caproni (2009) [33] (NR)	12	PASI ≥ 10 BSA ≥ 10%	Etanercept 50 mg BIW	28.0–67.0	43.3	NR	NR	NR/NR
Caproni (2009) [33] (NR)	12	PASI ≥ 10 BSA ≥ 10%	Acitretin 0.4 mg/kg/day	310.–65.0	36.7	NR	NR	NR/NR
von Stebut (2019) [79] CARIMA (Phase III)	12	PASI ≥ 10	Secukinumab 150 mg	46.0 (14.4)	57.4	27.8	20.8	31.1/89.6
			Secukinumab 300 mg	44.2 (12.9)	77.1	25.0	20.6	37.0/85.2
			Placebo to Secukinumab 150 mg ^a	46.8 (13.1)	69.6	17.4	20.3	39.1/69.6
			Placebo Secukinumab 300 mg ^a	43.7 (11.4)	69.2	15.4	18.9	30.8/92.3
Saurat (2008) [73]; Mrowietz (2013) [60] CHAMPION [60, 73] (Phase III)	16	PASI ≥ 10 BSA ≥ 10%	Adalimumab 40 mg Q2W	42.9 (12.6)	64.8	21.3	17.9	0*/NR
			Methotrexate 7.5 mg–25 mg QW	41.6 (12.0)	66.4	17.3	18.9	0*/NR
			Placebo	40.7 (11.4)	660	20.8	18.8	0*/NR
Chaudhari (2001)[103] (NR)	10	BSA ≥ 5%	Infliximab 5 mg/kg Q4W	51.0 (14.0)	63.6	NR	NR	0*/NR
Chaudhari (2001)[103] (NR)	10	BSA ≥ 5%	Placebo	45.0 (12.0)	72.7	NR	NR	0*/NR
Lebwohl (2018) [53] CIMPACT (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Certolizumab pegol 200 mg Q2W	46.7 (13.5)	68.5	16.4	19.5	26.7/NR
			Certolizumab pegol 400 mg Q2W	45.4 (12.4)	64.1	14.4	17.8	28.7/NR
			Etanercept 50 mg BIW	44.6 (14.1)	74.7	15.9	17.4	30.0/NR
			Placebo	46.5 (12.5)	59.6	21.2	18.9	19.3/NR
Gottlieb (2018) [44] CIMPASI-I (Phase III)	16	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Certolizumab pegol 200 mg Q2W	44.5 (13.1)	70.5	10.5	16.6	31.6/69.5
			Certolizumab pegol 400 mg Q2W	43.6 (12.1)	68.2	17.0	18.4	33.0/69.3
			Placebo	47.9 (12.8)	68.6	7.8	18.5	29.4/70.6
Gottlieb (2018) [44] CIMPASI-II (Phase III)	16	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Certolizumab pegol 200 mg Q2W	46.7 (13.3)	63.7	24.2	18.8	35.2/71.4
			Certolizumab pegol 400 mg Q2W	46.4 (13.5)	49.4	29.9	18.6	34.5/72.4
			Placebo	43.3 (14.5)	53.1	18.4	15.4	28.6/73.5
Bagel (2018) [28] CLARITY (Phase III)	12	PASI ≥ 12 BSA ≥ 10% mIGA 2011 ≥ 3	Secukinumab 300 mg Q4W	45.4 (14.1)	64.7	NR	16.8	20.0/NR
Bagel (2018) [28] CLARITY (Phase III)	12	PASI ≥ 12 BSA ≥ 10% mIGA 2011 ≥ 3	Ustekinumab 45 or 90 mg Q12W	45.3 (14.2)	68.1	NR	17.3	23.6/NR
Thaci (2015) [75] CLEAR (Phase III)	16	PASI ≥ 12 BSA ≥ 10% mIGA ≥ 3	Secukinumab 300 mg Q4W	45.2 (14)	68.0	20.5	19.7	14.2/NR
Thaci (2015) [75] CLEAR (Phase III)	16	PASI ≥ 12 BSA ≥ 10% mIGA ≥ 3	Ustekinumab 45 or 90 mg Q12W	44.6 (13.7)	74.3	15.9	16.1	13.0/NR
Reich (2019) [104] ECLIPSE (Phase III)	12	NR	Guselkumab 100 mg Q8W	NR	NR	NR	NR	NR/NR
			Secukinumab 300 mg Q4W	NR	NR	NR	NR	NR/NR
			Guselkumab 100 mg Q8W	NR	NR	NR	NR	NR/NR
			Secukinumab 300 mg Q4W	NR	NR	NR	NR	NR/NR
Langley (2014) [52] ERASURE (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Secukinumab 300 mg Q4W	44.9 (13.5)	69.0	23.3	17.4	28.6/NR
			Secukinumab 150 mg Q4W	44.9 (13.3)	68.6	18.8	17.5	29.8/NR
			Placebo	45.4 (12.6)	69.4	27.4	17.3	29.4/NR
Langley (2014) [52] FIXTURE (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Secukinumab 300 mg Q4W	44.5 (13.2)	68.5	15.3	15.8	11.6/NR
			Secukinumab 150 mg Q4W	45.4 (12.9)	72.2	15.0	17.3	13.8/NR
			Etanercept 50 mg BIW	43.8 (13.0)	71.2	13.5	16.4	13.8/NR
			Placebo	44.1 (12.6)	72.7	15.0	16.6	10.7/NR
Papp (2015) [83] ESTEEM 1 (Phase III)	16	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Apremilast 30 mg BID	45.8 (13.1)	67.0	NR	19.8	28.8/NR
Papp (2015) [83] ESTEEM 1 (Phase III)	16	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Placebo	46.5 (12.7)	69.0	NR	18.7	28.4/NR
Paul (2015) [66] ESTEEM 2 (Phase III)	16	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Apremilast 30 mg BID	45.3 (13.1)	64.0	NR	17.9	33.6/NR
Paul (2015) [66] ESTEEM 2 (Phase III)	16	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Placebo	45.7 (13.4)	73.0	NR	18.7	32.1/NR
Reich (2005) [67] EXPRESS (Phase III)	10	PASI ≥ 12 BSA ≥ 10%	Infliximab 5 mg/kg Q8W	42.6 (11.7)	69.0	31.0	19.1	0/0
Reich (2005) [67] EXPRESS (Phase III)	10	PASI ≥ 12 BSA ≥ 10%	Placebo	43.8 (12.6)	79.0	29.0	17.3	0/0
EXPRESS II [58] (Phase III)	14	PASI ≥ 12 BSA ≥ 10%	Infliximab 5 mg/kg Q8W	44.5 (13)	65.0	28.3	19.1	14.3/NR
EXPRESS II [58] (Phase III)	14	PASI ≥ 12 BSA ≥ 10%	Placebo	44.4 (12.5)	69.2	26.0	17.8	13.0/NR
Blauvelt (2015) [31]; Gottlieb (2016) [43] FEATURE (Phase III)	12	PASI ≥ 12 BSA ≥ 10% mIGA 2011 ≥ 3	Secukinumab 300 mg Q4W	45.1 (12.6)	64.4	NR	18.0	39.0/NR
			Secukinumab 150 mg Q4W	46 (15.1)	67.8	NR	20.4	47.5/NR
			Placebo	46.5 (14.1)	66.1	NR	20.2	44.1/NR
Flystrom (2008) [35] (NR)	12	NR	Methotrexate 7.5–15 mg QW	48.0	75.7	NR	NR	0/NR
Flystrom (2008) [35] (NR)	12	NR	Ciclosporin 3–5 mg/kg QD	45.0	87.1	NR	NR	0/NR
Gisondi (2008) [37] (NR)	24	NR	Etanercept 25 mg BIW	55.3 (10.9)	54.6	NR	23.5	0/NR
Gisondi (2008) [37] (NR)	24	NR	Acitretin 0.4 mg/kg QD	55 (11.3)	60.0	NR	18.8	0/NR
Goldminz (2015) [105] (NR)	16	PGA ≥ 3	Adalimumab 40 mg Q2W	50.5 (NR)	73.3	13.3	17.3	0/40.0
Goldminz (2015) [105] (NR)	16	PGA ≥ 3	Methotrexate 7.5–25 mg/week	50.3 (NR)	86.7	20.0	21.5	0/26.7
Gottlieb (2003) [47] (Phase II)	24	BSA ≥ 10%, active, stable plaque	Etanercept 25 mg BIW	48.2	58.0	28.0	23.0	0/NR
Gottlieb (2003) [47] (Phase II)	24	BSA ≥ 10%, active, stable plaque	Placebo	46.5	67.0	35.0	20.0	0/NR
Gottlieb (2011) [46] M10-114 (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Placebo	44.0 (13.6)	69.1	20.6	19.1	14.7/NR
Gottlieb (2011) [46] M10-114 (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Etanercept 50 mg BIW	43.1 (12.5)	69.5	22.7	17.0	14.2/NR
Heydendael (2003) [50] (NR)	16	PASI ≥ 8	Methotrexate 15 mg QD for 4 W then up to 22.5 mg QD	41.6 (13.0)	65.1	7.0	NR	0*/NR
Heydendael (2003) [50] (NR)	16	PASI ≥ 8	Cyclosporine 3 to 5 mg/kg/day	38.3 (12.4)	69.0	2.4	NR	0*/NR
Igarashi (2012) [51] (Phase II/III)	12	PASI ≥ 12, BSA ≥ 10%	Ustekinumab 45 mg Q12W	Median: 45.0	82.8	9.4	15.8	1.6/0
			Ustekinumab 90 mg Q12W	Median: 44.0	75.8	11.3	17.3	0/0
			Placebo	Median: 49.0	83.9	3.1	16.0	0/0
Reich (2017) [106] IXORA-S (Phase III)	12	PASI ≥ 10	Ustekinumab 45 mg or 90 mg Q12W	44.0 (13.3)	67.5	NR	18.2	15.1/NR
Reich (2017) [106] IXORA-S (Phase III)	12	PASI ≥ 10	Ixekizumab 80 mg Q2W	42.7 (12.7)	66.2	NR	18.0	13.2/NR
Paul (2015) [66] JUNCTURE (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Secukinumab 300 mg W1, 2, 3, then Q4W after W4	46.6 (14.2)	76.7	23.3	21.0	25.0/NR
			Secukinumab 150 mg W1, 2, 3, then Q4W after W4	43.9 (14.4)	67.2	26.2	20.6	24.6/NR
			Placebo	43.7 (12.7)	62.3	19.7	19.9	21.3/NR
Leonardi (2003) [56] (Phase III)	12	PASI ≥ 10, BSA ≥ 10%	Etanercept 25 mg BIW	45.4 (1)	67.0	NR	18.5	0*/NR
			Etanercept 50 mg BIW	44.8 (0.8)	65.0	NR	18.6	0*/NR
			Placebo	45.6 (1.0)	63.0	NR	18.4	0*/NR
Reich (2017) [71] LIBERATE (Phase III)	16	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Etanercept 50 mg QW^b	47.0 (14.1)	59.0	NR	18.1	0/NR
			Placebo	43.4 (14.9)	70.2	NR	16.6	0/NR
			Apremilast 30 mg BID	46 (13.6)	59.0	NR	19.7	0/NR
Gordon (2006) [42] M02-528 (Phase II)	12	BSA ≥ 5% PsO ≥ 1 year	Adalimumab 40 mg EOW	46.0	71.0	33.0	21.0	0*/NR
Gordon (2006) [42] M02-528 (Phase II)	12	BSA ≥ 5% PsO ≥ 1 year	Placebo	43.0	65.0	31.0	19.0	0*/NR
Meffert (1997) [57] (NR)	10	PASI 8–25	Cyclosporin A 2.5 mg/kg/day	NR	NR	NR	NR	0*/NR
Meffert (1997) [57] (NR)	10	PASI 8–25	Placebo	NR	NR	NR	NR	0*/NR
Nakagawa (2016) [62] (Phase III)	12	PASI ≥ 12 BSA ≥ 10%	Brodalumab 210 mg Q2W	46.4 (11.8)	78.4	13.5	15.0	13.5/NR
Nakagawa (2016) [62] (Phase III)	12	PASI ≥ 12 BSA ≥ 10%	Placebo	46.6 (10.8)	71.1	18.4	16.9	7.9/NR
Ohtsuki (2018) [63] (Phase III)	16	PASI ≥ 12 BSA ≥ 10% IGA ≥ 3	Guselkumab 100 mg Q8W	47.8 (11.1)	74.6	15.9	14.4	17.5/NR
Ohtsuki (2018) [63] (Phase III)	16	PASI ≥ 12 BSA ≥ 10% IGA ≥ 3	Placebo	48.3 (10.6)	84.4	15.6	13.7	15.6/NR
Ohtsuki (2017) [64] (Phase II)	16	PASI ≥ 12 BSA ≥ 10%	Apremilast 30 mg BID	51.7 (12.7)	83.5	NR	13.9	2.4/NR
Ohtsuki (2017) [64] (Phase II)	16	PASI ≥ 12 BSA ≥ 10%	Placebo	48.3 (12.0)	73.8	NR	12.4	4.8/NR
Papp (2005) [87] (NR)	12	PASI ≥ 10 BSA ≥ 10%	Etanercept 50 mg BIW	44.5	67.0	26.0	18.1	0*/NR
			Etanercept 25 mg BIW	46.0	65.0	28.0	21.5	0*/NR
			Placebo	44.0	64.0	26.0	17.5	0*/NR
Papp (2012a) [81, 82] (Phase III)	12	NR	Brodalumab 210 mg Q2W	42.1 (12.2)	62.0	30.0	17.1	0/NR
Papp (2012a) [81, 82] (Phase III)	12	NR	Placebo	41.8 (14.4)	58.0	18.0	18.3	0/NR
Papp (2012b) [81] (Phase II)	24	PASI ≥ 12 BSA ≥ 10%	Apremilast 30 mg BID	44.1 (14.7)	57.0	24.0	19.2	NR/NR
Papp (2012b) [81] (Phase II)	24	PASI ≥ 12 BSA ≥ 10%	Placebo	44.1 (13.7)	60.0	19.0	19.6	NR/NR
Papp (2015) [83] (Phase II)	16	PASI ≥ 12 BSA ≥ 10%	Tildrakizumab 100 mg Q12W	45.5 (12.8)	85.0	17.0	NR	0*/NR
			Tildrakizumab 200 mg Q12W	43.2 (12.6)	76.0	17.0	NR	0*/NR
			Placebo	45.9 (11.7)	83.0	24.0	NR	NR/NR
Menter (2008) [59] PHOENIX 1 (Phase III)	12	PASI ≥ 12 BSA ≥ 10%	Ustekinumab 45 mg Q12W	44.8 (12.5)	68.6	29.0	19.7	52.5/NR
			Ustekinumab 90 mg Q12W	46.2 (11.3)	67.6	36.7	19.6	50.8/NR
			Placebo	44.8 (11.3)	71.8	35.3	20.4	50.2/NR
Leonardi (2008) [55] PHOENIX 2 (Phase III)	12	PASI ≥ 12 BSA ≥ 10%	Ustekinumab 45 mg Q12W	45.1 (12.1)	69.2	26.2	11.7	38.4/NR
			Ustekinumab 90 mg Q12W	46.6 (12.1)	66.7	22.9	12.3	36.5/NR
			Placebo	47.0 (12.5)	69.0	25.6	12.2	38.8/NR
de Vries (2017) [34] PIECE (NR)	24	PASI ≥ 10 and/or BSA ≥ 10 and/or PASI ≥ 8 Skindex-29 score ≥ 35	Etanercept 50 mg BIW	42.4 (13.2)	56.0	13.0	17.9	8.0*/NR
de Vries (2017) [34] PIECE (NR)	24		Infliximab 5 mg/kg Q8W	45.9 (13.9)	72.0	8.0	21.5	9.0*/NR
Reich (2012) [69] (Phase II)	12	PASI ≥ 12 BSA ≥ 10%	CZP 200 mg Q2W	43.3 (10.1)	75.0	NR	21.0	22.0/NR
			CZP 400 mg Q2W	43.6 (12.4)	72.0	NR	19.6	24.0/NR
			Placebo	43.3 (12.8)	63.0	NR	19.7	24.0/NR
Reich (2020) [107] (Phase III)	24	NR	Ixekizumab 160 mg then 80 mg	NR	NR	NR	NR	0/0
Reich (2020) [107] (Phase III)	24	NR	Methotrexate 7.5–25 mg/week	NR	NR	NR	NR	0/0
RESTORE 1 [29] (Phase III)	16	PASI ≥ 12 BSA ≥ 10%	Infliximab 5 mg/kg Q8W	44.1	67.0	NR	18.8	8.3/61.1
RESTORE 1 [29] (Phase III)	16	PASI ≥ 12 BSA ≥ 10%	Methotrexate 15 mg QW	41.9	69.0	NR	17.0	8.4/64.7
Barker (2011) [71] RESURFACE 1 (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Tildrakizumab 200 mg Q12W	46.9 (13.2)	73.0	NR	NR	23.0/NR
			Tildrakizumab 100 mg Q12W	46.4 (13.3)	67.0	NR	NR	23.0/NR
			Placebo	47.9 (13.5)	65.0	NR	NR	23.0/NR
Reich (2017 [71] RESURFACE 2 (Phase III)	12	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Tildrakizumab 200 mg Q12W	44.6 (13.6)	72.0	NR	NR	12.0/NR
			Tildrakizumab 100 mg Q12W	44.6 (13.6)	72.0	NR	NR	13.0/NR
			Etanercept 50 mg Q2W	45.8 (14)	71.0	NR	NR	12.0/NR
			Placebo	46.4 (12.2)	72.0	NR	NR	13.0/NR
Menter (2010) [108]; Menter (2008 [59] REVEAL (Phase III)	16	PASI ≥ 12 BSA ≥ 10% PGA ≥ moderate	Adalimumab 40 mg Q2W	44.1 (13.2)	67.1	27.5	18.1	11.9/NR
Menter (2010) [108]; Menter (2008 [59] REVEAL (Phase III)	16	PASI ≥ 12 BSA ≥ 10% PGA ≥ moderate	Placebo	45.4 (13.4)	64.6	28.4	18.4	13.3/NR
Rich (2013) [109] (Phase II)	12	NR	Secukinumab 150 mg Q4W	44.2 (13.0)	75.4	32.6	16.9	29.7/NR
Rich (2013) [109] (Phase II)	12	NR	Placebo	44.2 (12.6)	65.7	17.9	15.4	25.4/NR
SPIRIT [45] (NR)	10	PASI ≥ 12 BSA ≥ 10%	Infliximab 5 mg/kg Q4W	Median (IQR): 44.0 (34.0 to 53.0)	73.7	29.3	NR	33.3/NR
SPIRIT [45] (NR)	10	PASI ≥ 12 BSA ≥ 10%	Placebo	Median (IQR): 45.0 (30.0 to 52.0)	60.8	33.3	NR	31.4/NR
Torii (2010) [76] (Phase III)	10	PASI ≥ 12 BSA ≥ 10%	Infliximab 5 mg/kg Q8W	46.9 (13.0)	62.9	28.6	14.2	0/NR
Torii (2010) [76] (Phase III)	10	PASI ≥ 12 BSA ≥ 10%	Placebo	43.3 (12.3)	73.7	36.8	11.1	0/NR
Reich (2019) [72] TRANSFIGURE (Phase III)	16	PASI ≥ 12 BSA ≥ 10% NAPSI ≥ 16 at least 4 fingernails	Secukinumab 300 mg Q4W	45.1 (12.9)	80	26	18	24/NR
			Secukinumab 150 mg Q4W	43.5 (10.9)	82	24	20	22/NR
			Placebo	43.6 (11.2)	80	28	17.4	23/NR
Tyring (2006) [77] (Phase III)	12	PASI ≥ 12 BSA ≥ 10%	Etanercept 50 mg BIW	45.8 (12.8)	65.0	35.0	20.1	0*/NR
Tyring (2006) [77] (Phase III)	12	PASI ≥ 12 BSA ≥ 10%	Placebo	45.6 (12.1)	70.0	33.0	19.7	0*/NR
Gordon (2018) [38] UltlMMa 1 (Phase III)	16	PASI ≥ 12 BSA ≥ 10% sPGA ≥ 3	Risankizumab 150 mg Q12W	48.3 (13.4)	70.0	28.0	NR	34.0/NR
			Ustekinumab 45 or 90 mg Q12W	46.5 (13.4)	70.0	23.0	NR	30.0/NR
			Placebo	49.3 (13.6)	77.0	35.0	NR	39.0/NR
Gordon (2018) [38] UltlMMa 2 (Phase III)	16	PASI ≥ 12 BSA ≥ 10% sPGA ≥ 3	Risankizumab 150 mg Q12W	46.2 (13.7)	69.0	25.0	NR	40.0/NR
			Ustekinumab 45 or 90 mg Q12W	48.6 (14.8)	67.0	27.0	NR	43.0/NR
			Placebo	46.3 (13.3)	68.0	33.0	NR	43.0/NR
Gordon (2016) [40] UNCOVER 1 (Phase III)	12	PASI ≥ 12 BSA ≥ 10% sPGA ≥ 3	Ixekizumab 80 mg Q4W	46.0 (13.0)	67.0	NR	19.0	38.9/NR
Gordon (2016) [40] UNCOVER 1 (Phase III)	12	PASI ≥ 12 BSA ≥ 10% sPGA ≥ 3	Placebo	46.0 (13.0)	70.0	NR	20.0	42.0/NR
Gordon (2016) [40]; Gottlieb (2017) [110]; Griffiths (2015 [48]; Kemeny (2019) [111]; Papp (2018) [85] UNCOVER 2 [40, 48, 85, 110, 111] (Phase III)	12	PASI ≥ 12 BSA ≥ 10% sPGA ≥ 3	Ixekizumab 80 mg Q4W	45.0 (14.0)	70.0	NR	19.0	24.5/NR
			Etanercept 50 mg BIW	45.0 (13.0)	66.0	NR	19.0	21.2/NR
			Placebo	45.0 (12.0)	71.0	NR	19.0	25.6/NR
Gordon (2016) [40] UNCOVER 3 (Phase III)	12	PASI ≥ 12 BSA ≥ 10% sPGA ≥ 3	Ixekizumab 80 mg Q4W	46.0 (13.0)	67.0	NR	18.0	15.0/NR
			Etanercept 50 mg BIW	46.0 (14.0)	70.0	NR	18.0	15.7/NR
			Placebo	46.0 (12.0)	71.0	NR	18.0	17.1/NR
Stein (2018) UNVEIL [74] (Phase IV)	16	BSA 5%–10% sPGA = 3	Apremilast 30 mg BID	48.6 (15.4)	50.0	NR	17.5	0/NR
Stein (2018) UNVEIL [74] (Phase IV)	16	BSA 5%–10% sPGA = 3	Placebo	51.1 (13.7)	56.2	NR	13.9	0/NR
Van de Kerkhof (2008) [78] (Phase III)	12	PASI ≥ 10 BSA ≥ 10%	Etanercept 50 mg QW	45.9 (12.8)	61.5	15.6	19.3	0/NR
Van de Kerkhof (2008) [78] (Phase III)	12	PASI ≥ 10 BSA ≥ 10%	Placebo	43.6 (12.6)	54.4	10.9	17.3	0/NR
Gefland (2018) [36] VIP (Phase IV)	12	PASI ≥ 12 BSA ≥ 10	Adalimumab 40 mg Q2W	44.1 (14.0)	72.7	12.1	14.9	NR/NR
Gefland (2018) [36] VIP (Phase IV)	12	PASI ≥ 12 BSA ≥ 10	Placebo	44.3 (14.5)	64.5	6.5	19.3	NR/NR
Blauvelt (2017) [30] VOYAGE 1 (Phase III)	16	PASI ≥ 12 BSA ≥ 10% IGA ≥ 3	Guselkumab 100 mg Q8W	43.9 (12.7)	72.9	19.5	17.9	21.6/NR
			Adalimumab 40 mg Q2W	42.9 (12.6)	74.6	18.6	17.0	21.0/NR
			Placebo	44.9 (12.9)	68.4	17.2	17.6	19.5/NR
Reich (2017) [71] VOYAGE 2 (Phase III)	16	PASI ≥ 12 BSA ≥ 10% IGA ≥ 3	Guselkumab 100 mg Q8W	43.7 (12.2)	70.4	17.9	17.9	20.4/NR
			Adalimumab 40 mg Q2W	43.2 (11.9)	68.5	17.7	17.6	19.8/NR
			Placebo	43.3 (12.4)	69.8	18.5	17.9	21.8/NR
Gordon (2015) X-PLORE [41] (Phase II)	16	PASI ≥ 12 BSA ≥ 10% PGA ≥ 3	Guselkumab 100 mg Q8W	44.0	72.0	25.0	18.5	NR/NR
			Adalimumab 40 mg Q2W	50.0	70.0	26.0	19.3	60.0/NR
			Placebo	46.5	67.0	29.0	18.0	36.0/NR
Yang (2012) [80] (Phase III)	10	PASI ≥ 12 BSA ≥ 10%	Infliximab 5 mg/kg Q8W	39.4 (12.3)	71.4	NR	16.0	NR/100.0
Yang (2012) [80] (Phase III)	10	PASI ≥ 12 BSA ≥ 10%	Placebo	40.1 (11.1)	77.8	NR	16.0	NR/NR

BID twice daily, BIW twice per week, BSA body surface area, CZP certolizumab pegol, DMF dimethyl fumarate, EOW every other week, IGA investigator’s global assessment, mIGA modified investigator’s global assessment, NAPSI Nail Psoriasis Severity Index, NR not reported, PASI Psoriasis Area and Severity Index, PGA physician global assessment, PsA psoriatic arthritis, PsO plaque psoriasis, Q2W every 2 weeks, Q4W every 4 weeks, Q8W every 8 weeks, Q12W every 12 weeks, QD daily, QW weekly, SD standard deviation, sPGA static physician’s global assessment, W weeks

^*Proportion of patients taking specific treatments or classes of treatments reported, but not as overall proportion taking biologic or non-biologic therapies

^aThe CARIMA trial included two placebo arms, each subsequently switched to secukinumab 300 mg or 150 mg at week 12. Both placebo groups were included in the NMA

^bPooled with etanercept 25 mg BIW in NMA

NMA Results

The most important component for fit was use of REZ modeling versus the standard model. The best-fitting model in terms of DIC was the baseline-unadjusted FE REZ model. While the baseline-risk-adjusted RE REZ model had the smallest mean residual deviance, it involved extra parameters. Given the small difference in DIC, the level of significance for the estimate of the slope (− 0.69 [95% CrI: − 0.86, − 0.53] on the probit scale), and based on clinical recommendations, we maintained our a priori choice of baseline-risk adjusted model (RE REZ) as the base case and the best-fitting baseline-unadjusted FE REZ model was used as a sensitivity analysis (Table 4).

Table 4

Deviance information criterion for all multinomial-ordered probit models

Model	\({\beta }_{\mathrm{BL}} (95\mathrm{\% CrI})\)	\({\widehat{\sigma }}_{z} (95\mathrm{\% CrI})\)	\(\widehat{\tau } (95\mathrm{\% CrI})\)	\(\overline{D }\)*	DIC
REZ, adjusted, FE	−0.551 (−0.667, −0.411)	0.078 (0.057, 0.106)	–	661.0	836.8
REZ, adjusted, RE	−0.690 (−0.861, −0.533)	0.078 (0.056, 0.106)	0.103 (0.066, 0.148)	609.8	832.8
REZ, unadjusted, FE	–	0.080 (0.059, 0.110)	–	637.9	785.5
REZ, unadjusted, RE	–	0.080 (0.059, 0.110)	0.103 (0.045, 0.160)	604.6	813.4
Standard, adjusted, FE	−0.575 (−0.689, −0.439)	–	–	793.5	919.0
Standard, adjusted, RE	−0.715 (−0.898, −0.561)	–	0.104 (0.068, 0.149)	738.6	914.9
Standard, unadjusted, FE	–	–	–	773.6	870.7
Standard, unadjusted, RE	–	–	0.113 (0.053, 0.170)	734.9	897.9

CrI credible interval, DIC deviance information criterion, FE fixed effects, RE random-effects, REZ model that adds a random effects component to the parameter z, which reflects the difficulty of moving from one PASI cutoff to the next

Notations and abbreviations: \({\beta }_{BL}\), estimate of PBO baseline effect; \({ \widehat{\sigma }}_{z}\), the estimate of \({\sigma }_{z}\), the standard deviation of each z_ij (j = 1,2,…, maximum number of PASI cutoffs minus one); \(\widehat{\tau }\), the estimate of \(\tau \), the common between-study standard deviation on the probit differences; \(\overline{D }\), the mean deviance at residual; DIC, the deviance information criteria at residual

^*The total number of data points was 484 from 172 treatment arms from 72 studies. A treatment arm in a study with data on PASI50 and PASI75 contributes two data points as two independent PASI response categories of 50 to < 75% and 75–100% responses are modeled (where the response category of 0–50% is computed from arm size and PASI50)

At the end of the induction phase in the base-case model, all treatments considered in the network were more effective than placebo, and all biologic treatments except etanercept were more effective than non-biologics (apremilast, methotrexate, dimethyl fumarate, cyclosporin, or acitretin) at achieving all levels of PASI responses. IL inhibitors (risankizumab 150 mg, ixekizumab 80 mg and brodalumab 210 mg, secukinumab 300 mg, and guselkumab 100 mg) were the best-performing treatments for achieving all PASI (50, 75, 90, and 100) response in short term. Both doses of etanercept (25 mg and 50 mg) had the lowest probabilities of response among the biologics across all PASI response levels (Fig. 4).

Among the TNF-α inhibitors, infliximab 5 mg/kg and CZP 400 mg were better performing treatments than adalimumab and etanercept for achieving the lower levels of short-term PASI (50, 75), with infliximab showing a larger advantage and CZP 400 mg being essentially equivalent to adalimumab for PASI (90, 100).

Treatment rankings from REZ RE baseline adjusted multinomial analysis remained nearly similar across PASI levels, as was permissible with the REZ model (Fig. 5), but even when rankings changed, estimated probabilities were very similar across TNF-α inhibitors other than etanercept and infliximab. Similar performances of these treatments were observed in the non-baseline risk REZ FE model (Table S7 and S8) and in the binomial sensitivity analyses (Table S9).

REZ Model Versus the Standard Model

For both FE vs. RE, and baseline-risk adjusted vs. unadjusted analyses, the REZ model had better fit than the standard model (Table 4). This was not unexpected, as the assumption that all treatments must share an exactly equivalent ‘step’ in between PASI cutoffs in a standard model is a strong one and would be regardless of the statistical metric. The REZ model allowed treatments to share a common step, while allowing for some variation across treatments, the amount determined by the data.

While the REZ models had better fit than the standard model under baseline risk adjustment with random-probit differences assumption, the findings were substantively similar between the two models. The REZ (Fig. 5) and standard models (Table S10) showed that the top-performing treatments were the same, though the ranking is (non-substantively) different (also see predicted probabilities from REZ [Fig. 4] and standard models [Table S11]).

Note that as drugs within treatment class could share the exact same ‘steps’ between PASI cutoffs (e.g., relative treatment rankings might not vary), the model could be extended to allow for variation across treatment classes instead of across treatment. The richness of the data in PsO trials allows the testing of a variety of approaches that allow for borrowed strength across PASI cutoffs without making the strong assumption that all treatments will have precisely the same ranking, from PASI50 through PASI100.

Patients Naïve to Previous Biologic Treatment (Subgroup Analysis)

Thirty-five RCTs reported subgroup data for populations that were 100% naïve to previous biologic treatment, and six additional studies had data for ≥ 90% but < 100% naïve (Figs. S1 and S2). In the ≥ 90% naïve biologic-naive population, risankizumab 150 mg outperformed all available treatments across all PASI levels, followed by brodalumab 210 mg, guselkumab 100 mg, and ixekizumab 80 mg. Among the TNF-α inhibitors, CZP 400 mg performed better than infliximab, adalimumab, and etanercept across all PASI levels (Fig. S3).

When the cutoff for the percentage of patients that are treatment naïve was adjusted to a more stringent 100%, dimethyl fumarate fell out of the network. Similar findings were obtained in the 100% biologic-naïve population with the following exception: infliximab 5 mg/kg performed better than CZP 400 mg in achieving PASI 75 only. The conclusions in this subgroup analysis reflected those of the base-case analysis, with the IL inhibitors showing the best efficacy across PASI levels (Fig. S4).

Discussion

This review considered only licensed dosages and restricted PASI outcomes to 10–16 weeks—a clinically relevant time point to assess whether PsO treatments produce a positive effect on patients. It considered peer-reviewed and gray literature evidence to avoid publication bias, and screening and data extraction were conducted by two independent reviewers.

The NMA analysis enabled us to produce indirect treatment comparative effect estimates for biologics that were compared in RCTs, while adjusting for the effect of differences in baseline placebo rates. The biologics were associated with better probability of achieving all PASI response levels compared with non-biologics and placebo. All biologics except etanercept had > 80% probability of achieving PASI50. Except for tildrakizumab (200 mg and 100 mg), the IL inhibitors were the best-performing treatments for achieving all levels of short-term PASI (50, 75, 90, and 100). CZP 400 mg and infliximab 5 mg/kg performed the best among the TNF-α inhibitors. The validity of our base-case analysis was reinforced by similar results from two sensitivity analyses (a baseline-unadjusted model and an analysis restricted to biologic-naïve populations).

These results should be interpreted in light of the following limitations. Our SLR search cutoff point (March 2019) may have missed trials of newer treatments approved after this date. The analysis was limited to PASI outcomes to evaluate clinical efficacy and did not consider other efficacy outcomes which may have provided additional value to the performance of treatments. Our analysis was restricted to the efficacy of treatments in a 10- to 16-week period, which may not reflect patients’ long-term experiences. Additionally, all NMAs assume that populations and study designs/methods across trials are homogeneous enough for the valid estimation of indirect treatment effects. While studies had similar populations and all used the PASI, we cannot rule out that some differences in patient characteristics might have influenced results. Generally, a signal such as heterogeneity in study results indicates a problem, although the global estimate of heterogeneity was quite low. We also found similar results when restricting analyses to biologic-naïve patients, suggesting that variation in previous biologics was unlikely a source of heterogeneity.

Previous NMAs [17, 69, 90‐98] investigated the comparative effects estimates between different biologic and non-biologic treatments for patients with moderate-to-severe PsO; however, the scope of many of these publications differed from ours (e.g., some NMAs restricted the analysis to comparisons of specific treatments or treatment class). Our analysis results were generally consistent with previous findings in Armstrong (2020) [22] and Sawyer (2019) [95], which used a multinomial approach with adjustment for baseline risk. There are distinct methodologic differences with the planning of our evidence generation and analysis, making these NMA results more robust in providing reliable effect and comparative effect estimates among the biologics. For example, we restricted our protocol to approved treatments with licensed dosages with a reasonably adequate sample size and with a restricted follow-up period (10–16 weeks) to allow interpretation of results in a healthcare decision-making setting. The recent Cochrane review published on the same topic adopted a different protocol with a broader scope that allowed inclusion of trials testing non-approved treatments, of any sample size, reporting on outcomes in a wider range of follow-up (8–24 weeks) periods and employing different analytic approaches (multivariate modeling), limiting direct comparability of treatments effect estimates between this study and the Cochrane review [96].

Wright et al. recently published an SLR of 25 NMAs conducted in PsO [98]. The authors reported that the choice of multinomial vs. binomial models had minimal impact on the results. Six of the NMAs in the SLR adjusted for placebo rate, and, in all cases, those models found a better fit for the adjusted over the unadjusted model, supporting this approach. Across the short-term NMAs of PASI 75 and 90, ixekizumab, brodalumab, and risankizumab tended to rank in the top three when evaluated, with ixekizumab ranking first in most NMAs, and second in the remainder, including our study. Secukinumab, infliximab, adalimumab, and guselkumab tended to rank next, with etanercept, certolizumab pegol, ustekinumab, and tildrakizumab tending to rank lowest. Our NMA yielded comparable results, with risankizumab, ixekizumab, and brodalumab as the top-ranking treatments.

Conclusions

Our study confirmed that IL inhibitors are likely the best short-term treatment choices for improving all PASI levels. The findings from our enhanced NMA analyses, which considered additional methodologic approaches using the richness of the trial data, provide clinicians and researchers with reliable comparative estimates of biologics in moderate-to-severe PsO and allow further application of similar methodologies in other disease areas with similar analytical challenges, such as PsA.

Acknowledgements

Funding

This study and the Journal’s Rapid Service Fee were funded by UCB Pharma Ltd., Slough, UK.

Medical Writing and/or Editorial Assistance and Additional Support

Authors thank Vanessa Taieb from UCB for providing support for visualization. Authors also thank Marissa Betts, Paulina Kazmierska, and Mahmoud Slim from Evidera for manuscript revisions. Editorial assistance in the preparation of this article was provided by Dawn Ri’chard from Evidera.

Authorship

All named authors meet the International Committee of Medical Journal Editors (ICMJE) criteria for authorship for this article, take responsibility for the integrity of the work as a whole, and have given their approval for this version to be published.

Author Contributions

Substantial contributions to study conception and design: KF, GS; substantial contributions to analysis and interpretation of the data: KF, GS, DMP, BN, SEM, SK, KR; drafting the article or revising it critically for important intellectual content: KF, GS, DMP, BN, SEM, SK, KR; final approval of the version of the article to be published: KF, GS, DMP, BN, SEM, SK, KR.

Disclosures

KF, BN: employed by Evidera, Inc., by PPD; GS and SM were employees of Evidera at the time the research was conducted.DMP: received consultancy fees from UCB; SK: employed by UCB Pharma; KR: Served as advisor and/or paid speaker for and/or participated in clinical trials sponsored by AbbVie, Affibody, Almirall, Amgen, Avillion, Biogen, Boehringer Ingelheim, Bristol Myers Squibb, Celgene, Centocor, Covagen, Dermira, Eli Lilly, Forward Pharma, Fresenius Medical Care, Galapagos, Galderma, GSK, Janssen, Kyowa Kirin, LEO Pharma, Medac, MSD, Miltenyi Biotec, Novartis, Ocean Pharma, Pfizer, Regeneron, Samsung Bioepis, Sanofi, Sun Pharma, Takeda, UCB Pharma, Valeant/Bausch Health, and Xenoport.

Compliance with Ethics Guidelines

This article is based on previously conducted studies and does not contain any new studies with human participants or animals performed by any of the authors.

Data Availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

Open Access This article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, which permits any non-commercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc/4.0/.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 759 kb)

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Titel: Short-Term Efficacy of Biologic Therapies in Moderate-to-Severe Plaque Psoriasis: A Systematic Literature Review and an Enhanced Multinomial Network Meta-Analysis
verfasst von: Kyle Fahrbach
Grammati Sarri
David M. Phillippo
Binod Neupane
Samantha E. Martel
Sandeep Kiri
Kristian Reich
Publikationsdatum: 22.09.2021
Verlag: Springer Healthcare
Erschienen in: Dermatology and Therapy / Ausgabe 6/2021
Print ISSN: 2193-8210
Elektronische ISSN: 2190-9172
DOI: https://doi.org/10.1007/s13555-021-00602-z

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Abstract

Introduction

Methods

Results

Conclusion

Supplementary Information

Introduction

Methods

SLR Overview

Study Characteristics and NMA Assumptions

Statistical Analysis

Results

SLR Search Results

Study and Patient Characteristics

NMA Results

REZ Model Versus the Standard Model

Patients Naïve to Previous Biologic Treatment (Subgroup Analysis)

Discussion

Conclusions

Acknowledgements

Funding

Medical Writing and/or Editorial Assistance and Additional Support

Authorship

Author Contributions

Disclosures

Compliance with Ethics Guidelines

Data Availability

Supplementary Information

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