OBJECTIVES:B cell depletion or B cell activating factor (BAFF) blockade has shown benefits in systemic lupus erythematosus (SLE). We compared ianalumab, a monoclonal antibody targeting BAFF receptor (BAFF-R)-expressing B cells to lyse B cells and block BAFF-R, with placebo for SLE treatment combined with standard therapies. METHODS:Patients with active SLE were randomised (1:1) to monthly subcutaneous ianalumab 300 mg or placebo. The primary outcome was a composite of SLE Responder Index (SRI)-4 at week 28 in patients successfully achieving corticosteroid (CS) tapering criteria. Patients subsequently received open-label (OL) ianalumab until week 48, followed by exploratory assessments at week 52 and off-treatment to week 68. Safety monitoring continued until B cell recovery. This report describes interim analyses conducted on the week 68 dataset. RESULTS:Sixty-seven patients were randomised and received blinded treatments until week 28. The primary composite endpoint was more frequently achieved with ianalumab vs placebo: 15/34 (44.1%) vs 3/33 (9.1%), with responses sustained to week 52 and replicated by placebo transitioned to OL ianalumab: 15/33 (45.5%) and 13/32 (40.6%). Positive treatment effects were consistently observed across other lupus disease activity outcomes (SRI-6, Definition of Remission in SLE, Lupus Low Disease Activity State, flare reduction, and CS use) at week 28, with clinical benefits until weeks 52 and 68. Ianalumab was not associated with increased serious adverse events or serious infections. Nonserious local injection site reactions occurred more frequently with ianalumab. CONCLUSIONS:At week 28, reduced disease activity was observed in patients with SLE receiving ianalumab plus standard therapies compared with those receiving standard therapies alone, with sustained benefits with further treatment until 1 year, which was well tolerated.

OBJECTIVE:The objective of this study was to report 52-week safety and efficacy of ianalumab from phase 2b dose-finding study in patients with Sjögren's disease (SjD). METHODS:Patients randomly received (1:1:1:1) ianalumab (5, 50, or 300 mg) or placebo subcutaneously every 4 weeks until week 24 (treatment period [TP]1). At week 24, patients on 300 mg were rerandomized to continue 300 mg or receive placebo until week 52 (TP2), patients on placebo were switched to ianalumab 150 mg, and patients on 5 and 50 mg directly entered posttreatment safety follow-up. Patients who discontinued treatment early or completed treatment entered safety follow-up (≥20 weeks). RESULTS:During TP1, 190 patients were randomized (placebo = 49, 5 mg = 47, 50 mg = 47, 300 mg = 47). Of these 190 patients, 90 (47.4 %; 43 continued 300 mg and 47 received placebo) entered TP2, and 81 of 90 (90.0%) completed the study treatment. By week 52, efficacy was sustained in patients who continued 300 mg in TP2 (EULAR Sjögren's Syndrome Disease Activity Index, EULAR Sjögren's Syndrome Patient Reported Index, patient global assessment, and physician global assessment change from week 24: -1.45, -0.46, -4.69, and -6.86, respectively). Stimulated salivary flow rates and autoantibody levels numerically improved in the 300 mg group. Treatment-emergent adverse events were not dose-dependent, except for injection-site reactions. Cases of decreased neutrophil counts (Common Terminology Criteria for Adverse Events v4.03 grade 3 according to laboratory listings) were observed in three patients during the posttreatment follow-up, occurring at 3.5, 5.5, and 3 months, after the last ianalumab administration. None were associated with infection except one incidental finding of asymptomatic cytomegalovirus infection (IgM-positive). CONCLUSION:In patients with SjD, ianalumab 300 mg demonstrated sustained efficacy through week 52 and a favorable safety profile up to two years of follow-up.

Objective Cognitive dysfunction is a characteristic yet heterogeneous feature of systemic lupus erythematosus (SLE) that can impact quality of life. In a phase 2 trial (NCT03656562) comprising two separate, placebo-controlled cohorts evaluating ianalumab and iscalimab in patients with SLE of moderate-to-severe activity, we employed Cambridge Automated Neuropsychological Test Battery (CANTAB) assessments to characterize patients' baseline cognitive function and explore associations with clinical parameters and biomarkers associated with disease severity. Here we report baseline results, with further exploration of potential treatment effects in the ianalumab cohort. Methods CANTAB was administered at baseline, 12 and 28 weeks. Scores indexed episodic memory, working memory, executive function and attention, normalized by age and gender relative to individuals without known cognitive dysfunction. A global composite comprised the mean of four domain scores for each assessment. Results Baseline CANTAB scores (n=104 patients) indicated cognitive dysfunction in this sample for executive function, working memory, and global cognition (t-test for group mean <0; figure 1). Correlations between cognitive assessment scores and standard clinical (e.g., FACIT-Fatigue) and biomarker parameters of disease activity were generally low, with the highest correlation observed between global cognition and anti-Smith antibody status (r= -0.4, FDR <0.05; figure 2). Although the primary lupus disease outcome objective was met for the ianalumab treatment cohort (n=64; reported separately), we did not observe a treatment effect on CANTAB scores. In consideration of heterogenous cognitive dysfunction in SLE, we explored treatment effect heterogeneity using biomarkers and clinical parameters putatively associated with cognitive dysfunction in SLE. Here, a SomaScan® aptamer to complement component C1q showed a significant treatment interaction for working memory and executive function. Conclusions These results are consistent with a heterogenous profile of cognitive dysfunction in SLE. However, limited association between CANTAB scores and clinical and laboratory disease markers makes clinical interpretation challenging. We did not detect an ianalumab treatment effect after 28 weeks but cannot exclude the possibility of benefit over longer treatment intervals, or detection by more frequent CANTAB assessments. SLE trials testing treatment effects on cognitive function may benefit from stronger biomarkers to identify individuals experiencing disease-related cognitive dysfunction most likely to benefit from an efficacious therapy.

Objectives To evaluate the safety and efficacy of remibrutinib in patients with moderate-to-severe Sjögren’s syndrome (SjS) in a phase 2 randomised, double-blind trial ( NCT04035668 ; LOUiSSE (LOU064 in Sjögren’s Syndrome) study). Methods Eligible patients fulfilling 2016 American College of Rheumatology/European League Against Rheumatism (EULAR) criteria for SjS, positive for anti-Ro/Sjögren’s syndrome-related antigen A antibodies, with moderate-to-severe disease activity (EULAR Sjögren’s Syndrome Disease Activity Index (ESSDAI) (based on weighted score) ≥ 5, EULAR Sjögren’s Syndrome Patient Reported Index (ESSPRI) ≥ 5) received remibrutinib (100 mg) either one or two times a day, or placebo for the 24-week study treatment period. The primary endpoint was change from baseline in ESSDAI at week 24. Key secondary endpoints included change from baseline in ESSDAI over time, change from baseline in ESSPRI over time and safety of remibrutinib in SjS. Key exploratory endpoints included changes to the salivary flow rate, soluble biomarkers, blood transcriptomic and serum proteomic profiles. Results Remibrutinib significantly improved ESSDAI score in patients with SjS over 24 weeks compared with placebo (ΔESSDAI −2.86, p=0.003). No treatment effect was observed in ESSPRI score (ΔESSPRI 0.17, p=0.663). There was a trend towards improvement of unstimulated salivary flow with remibrutinib compared with placebo over 24 weeks. Remibrutinib had a favourable safety profile in patients with SjS over 24 weeks. Remibrutinib induced significant changes in gene expression in blood, and serum protein abundance compared with placebo. Conclusions These data show preliminary efficacy and favourable safety of remibrutinib in a phase 2 trial for SjS.

Objective Ianalumab, an afuscosylated monoclonal antibody, depletes B cells and blocks survival signals mediated by the B-cell activating factor receptor (BAFFR). Sjögren disease (SjD) is an autoimmune disorder with exocrine glandular and extraglandular manifestations, elevated BAFF, and autoantibodies to nuclear antigens. A phase 2b dose-finding trial of ianalumab (NCT02962895) in 190 patients with active SjD met its primary endpoint; 300 mg was clinically efficacious and improved whole salivary flow. Here, we explored changes in autoantibody and proteomic signatures with ianalumab treatment to characterize biomarkers associated with SjD disease activity. Methods Patients with active SjD (N = 190) were randomized (1:1:1:1) to receive placebo or ianalumab (5/50/300 mg). Serum samples collected at baseline and week 24 were used for protein profiling and delineation of interferon protein signatures using the SomaScan(R) v4.1 platform. Autoantibodies and BAFF levels were assessed by Luminex-based enzyme-linked immunoassay assays. A linear mixed-effect model was used to identify longitudinal changes in protein concentration at week 24 versus baseline. Results were visualized using heatmaps and hierarchical clustering. Results At baseline, cluster analysis did not reveal significant correlations between European League Against Rheumatism Sjögren's Syndrome Disease Activity Index scores (including subdomains) and levels of autoantibodies or proteins of interest. Ianalumab led to marked changes in autoantibody and serum protein levels. The 300-mg dose showed increased numbers of significantly modulated serum proteins (42) with more pronounced expression modulation versus the 5-mg (9) and 50-mg (20) dose groups. Several B-cell surface proteins were consistently downregulated by ianalumab, including FcRL4, plausibly involved in the pathogenicity of SjD. The 50-mg and 300-mg doses induced downregulation of additional proteins: B-cell maturation antigen, specifically expressed by antibody-producing cells, or the chemokines CXCL13 and CCL21, associated with immune infiltration of glandular tissues. A trend for downregulation of interferon protein signatures was seen with 50-mg and 300-mg doses. Conclusions No differential proteomic signatures related to baseline disease activity were identified. The dose response in clinical efficacy of ianalumab in patients with SjD observed in the phase 2b trial is also reflected at the protein level, with increased depth and breadth of proteomic changes by week 24, correlating with increasing dose.

Mild cognitive impairment (MCI) is characterized by an abnormal decline in mental and cognitive function compared with normal cognitive aging. It is an underlying condition of Alzheimer's disease (AD), an irreversible neurodegenerative disease. In recent years, neuroinflammation has been investigated as a new leading target that contributes to MCI progression into AD. Understanding the mechanism underlying inflammatory processes involved in the early onset of the disease could help find a safe and effective way to diagnose and treat patients. In this article, we assessed over twenty different blood and cerebrospinal fluid (CSF) inflammatory biomarker concentrations with immunoassay methods in patients with MCI (mild cognitive impairment), non-impaired control (NIC), and serum healthy control (HC). We performed group comparisons and analyzed in-group correlations between the biomarkers. We included 107 participants (mean age: 64.7 ± 7.8, women: 58.9%). CSF osteopontin and YKL-40 were significantly increased in the MCI group, whereas serum C-reactive protein and interleukin-6 were significantly higher (p < 0.001) in the NIC group compared with the MCI and HC groups. Stronger correlations between interleukin-1β and inflammasome markers were observed in the serum of the MCI group. We confirmed specific inflammatory activation in the central nervous system and interleukin-1β pathway upregulation in the serum of the MCI cohort.

Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease characterized by recurring suppurating lesions of the intertriginous areas, resulting in a substantial impact on patients' QOL. HS pathogenesis remains poorly understood. An autoimmune component has been proposed, but disease-specific autoantibodies, autoantigens, or autoreactive T cells have yet to be described. In this study, we identify a high prevalence of IgM, IgG, and IgA antibodies directed against N epsilon-carboxyethyl lysine (CEL), a methylglyoxal-induced advanced glycation end-product, in the sera of patients with HS. Titers of anti-CEL IgG and IgA antibodies were highly elevated in HS compared with those in healthy controls and individuals with other inflammatory skin diseases. Strikingly, the majority of anti-CEL IgG was of the IgG2 subclass and correlated independently with both disease severity and duration. Both CEL and anti-CEL-producing plasmablasts could be isolated directly from HS skin lesions, further confirming the disease relevance of this autoimmune response. Our data point to an aberration of the methylglyoxal pathway in HS and support an autoimmune axis in the pathogenesis of this debilitating disease.

MHV370, a dual antagonist of human Toll-like receptors (TLR) 7 and 8, suppresses cytokines and interferon-stimulated genes in vitro and in vivo, and has demonstrated efficacy in murine models of lupus. This first-in-human study aimed to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of single and multiple doses of MHV370 in healthy adults, as well as the effects of food consumption on a single dose of MHV370. This was a phase 1, randomised, placebo-controlled study conducted in three parts. In part A, participants received (3:1) a single ascending dose (SAD) of 1, 3, 10, 20, 40, 80, 160, 320, 640 and 1000 mg MHV370 or placebo. In part B, participants received (3:1) multiple ascending doses (MAD) of 25, 50, 100, 200 and 400 mg MHV370 twice daily (b.i.d) or placebo for 14 days. In part C, participants received an open-label single dose of 200 mg MHV370 under fasted or fed conditions. Safety, pharmacokinetic and pharmacodynamic parameters were evaluated. MHV370 was well tolerated, and no safety signal was observed in the study. No dose-limiting adverse events occurred across the dose range evaluated. Plasma concentrations of MHV370 increased with dose (mean [SD] maximum plasma concentrations ranged from 0.97 [0.48] to 1670 [861.0] ng/mL for SAD of 3–1000 mg, 29.5 [7.98] to 759 [325.0] ng/mL for MAD of 25–400 mg b.i.d. on day 1). The intake of food did not have a relevant impact on the pharmacokinetics of MHV370. Pharmacodynamic data indicated time- and dose-dependent inhibition of TLR7-mediated CD69 expression on B cells (100

Hidradenitis suppurativa (HS) is a chronic, recurring inflammatory dermatosis characterized by abscesses, deep-seated nodules, sinus tracts, and fibrosis in skin lesions around hair follicles of the axillary, inguinal, and anogenital regions. Whereas the exact pathogenesis remains poorly defined, clear evidence suggests that HS is a multifactorial inflammatory disease characterized by innate and adaptive immune components. Bioactive lipids are important regulators of cutaneous homeostasis, inflammation, and resolution of inflammation. Alterations in the lipid mediator profile can lead to malfunction and cutaneous inflammation. We used targeted lipidomics to analyze selected omega-3 and omega-6 polyunsaturated fatty acids in skin of patients with HS and of healthy volunteers. Lesional HS skin displayed enrichment of 5-lipoxygenase (LO)‒derived metabolites, especially leukotriene B4. In addition, 15-LO‒derived metabolites were underrepresented in HS lesions. Changes in the lipid mediator profile were accompanied by transcriptomic dysregulation of the 5-LO and 15-LO pathways. Hyperactivation of the 5-LO pathway in lesional macrophages identified these cells as potential sources of leukotriene B4, which may cause neutrophil influx and activation. Furthermore, leukotriene B4–induced mediators and pathways were elevated in HS lesions, suggesting a contribution of this proinflammatory lipid meditator to the pathophysiology of HS.

Background Primary Sjogren's syndrome is an autoimmune disease that presents as dryness of the mouth and eyes due to impairment of the exocrine glands. To our knowledge, no systemic therapies for primary Sjogren's syndrome have shown efficacy. CD40-CD154-mediated T cell-B cell interactions in primary Sjogren's syndrome contribute to aberrant lymphocyte activation in inflamed tissue, leading to sialadenitis and other tissue injury. Therefore, we investigated the safety and preliminary efficacy of iscalimab (CFZ533), a novel anti-CD40 monoclonal antibody, in patients with primary Sjogren's syndrome. Methods This multicentre, randomised, double-blind, placebo-controlled, proof-of-concept study took place at ten investigational sites across Europe (UK, n=4; Germany, Switzerland, and Hungary, n=1 each) and the USA (n=3). Eligible patients were aged 18-75 years and fulfilled the 2002 American European consensus group diagnostic dassification criteria for primary Sjogren's syndrome. In the double-blind phase of the trial, patients were randomly assigned (2:1) via computer-generated unique randomisation numbers to receive subcutaneous iscalimab (3 mg/kg) or placebo at weeks 0, 2, 4, and 8 (cohort 1) or intravenous iscalimab (10 mg/kg) or placebo at weeks 0, 2, 4, and 8 (cohort 2). Randomisation was stratified according to baseline intake of oral corticosteroids. At week 12, patients in both cohorts received open-label iscalimab (same dose and route) for 12 weeks. The primary objectives of the study were to assess the safety, tolerability, and efficacy of multiple doses of iscalimab in the two sequential dose cohorts. Safety and tolerability were assessed by adverse events and efficacy of iscalimab versus placebo was assessed by dinical disease activity, as measured by the change in European League Against Rheumatism Sjogren's syndrome disease activity index (ESSDAI) score after 12 weeks of treatment. Analyses were done on a per-protocol basis. The trial was registered with ClinicalTrials.gov, NCT02291029. Findings Between Oct 22, 2014, and June 28, 2016, we assessed 82 patients for eligibility (25 for cohort 1 and 57 for cohort 2). 38 patients were excluded because of ineligibility. In cohort 1, 12 patients were randomly assigned to receive either 3 mg/kg doses of iscalimab (n=8) or placebo (n=4), and in cohort 2, 32 patients were randomly assigned to receive either intravenous 10 mg/kg doses of iscalimab (n=21) or placebo (n=11). Adverse events were similar between iscalimab treatment groups and placebo groups, with adverse events occurring in all patients in cohort 1, and in 52% and 64% of the iscalimab and placebo groups, respectively, in cohort 2. Two serious adverse events were reported (one case of bacterial conjunctivitis in cohort 1 and one case of atrial fibrillation in cohort 2), which were unrelated to treatment with iscalimab. Intravenous treatment with iscalimab resulted in a mean reduction of 5.21 points (95% CI 0.96-9.46; one-sided p=0.0090) in ESSDAI score compared with placebo. There was no signficiant difference in ESSDAI score between subcutaneous iscalimab and placebo. Interpretation To our knowledge, this is the first randomised, placebo-controlled proof-of-concept study of a new investigational drug for primary Sjogren's syndrome that indicates preliminary efficacy. Our data suggest a role of CD40-CD154 interactions in primary Sjogren's syndrome pathology and the therapeutic potential for CD40 blockade in this disease should be investigated further. Copyright (C) 2020 Elsevier Ltd. All rights reserved.

Iscalimab is a fully human, CD40 pathway blocking, nondepleting monoclonal antibody being developed as an immunosuppressive agent. We describe a first-in-human, randomized, double-blind, placebo-controlled study investigating the safety, tolerability, pharmacokinetics, and pharmacodynamics of iscalimab in healthy subjects and rheumatoid arthritis patients. Healthy subjects (n = 56) received single doses of intravenous iscalimab (0.03, 0.1, 0.3, 1, or 3 mg/kg), or subcutaneous iscalimab (3 mg/kg), or placebo. Rheumatoid arthritis patients (n = 20) received single doses of intravenous iscalimab (10 or 30 mg/kg) or placebo. Iscalimab exhibited target-mediated drug disposition resulting in dose-dependent and nonlinear pharmacokinetics. Complete (≥90%) CD40 receptor occupancy on whole blood B cells was observed at plasma concentrations >0.3-0.4 µg/mL. In subjects receiving 3 mg/kg iscalimab, antibody responses to keyhole limpet hemocyanin were transiently suppressed. CD40 occupancy by iscalimab prevented ex vivo human rCD154-induced expression of CD69 on B cells in whole blood. All doses were generally safe and well tolerated, with no clinically relevant changes in any safety parameters, including no evidence of thromboembolic events. Iscalimab appears to be a promising blocker of the CD40-CD154 costimulatory pathway with potential use in transplantation and other autoimmune diseases.

The beta‐site amyloid precursor protein cleaving enzyme‐1 (BACE‐1) initiates the generation of amyloid‐β (Aβ), and the amyloid cascade leading to amyloid plaque deposition, neurodegeneration, and dementia in Alzheimer's disease (AD). Clinical failures of anti‐Aβ therapies in dementia stages suggest that treatment has to start in the early, asymptomatic disease states. The BACE‐1 inhibitor CNP520 has a selectivity, pharmacodynamics, and distribution profile suitable for AD prevention studies. CNP520 reduced brain and cerebrospinal fluid (CSF) Aβ in rats and dogs, and Aβ plaque deposition in APP‐transgenic mice. Animal toxicology studies of CNP520 demonstrated sufficient safety margins, with no signs of hair depigmentation, retina degeneration, liver toxicity, or cardiovascular effects. In healthy adults ≥ 60 years old, treatment with CNP520 was safe and well tolerated and resulted in robust and dose‐dependent Aβ reduction in the cerebrospinal fluid. Thus, long‐term, pivotal studies with CNP520 have been initiated in the Generation Program. Alzheimer's disease (AD) is a chronic neurodegenerative disorder with increasing incidence in the aging societies, but without any disease‐modifying treatment. Deposition of toxic forms of the protein Aβ in the brain is pathologic. Treatment with a BACE‐1 inhibitor may prevent Aβ deposition. Alzheimer's disease (AD) is a chronic neurodegenerative disorder with increasing incidence in the aging societies, but without any disease‐modifying treatment. Deposition of toxic forms of the protein Aβ in the brain is pathologic. Treatment with a BACE‐1 inhibitor may prevent Aβ deposition.