Faculty Bibliography

BACKGROUND/UNASSIGNED:Fibrosis and dystrophic calcification disrupting conduction tissue architecture are histopathological lesions characterizing cardiac manifestations of neonatal lupus (cardiac-NL) associated with maternal anti-SSA/Ro antibodies. OBJECTIVES/UNASSIGNED:Increased appreciation of heterogeneity in fibroblasts encourages re-examination of existing models with the consideration of multiple fibroblast subtypes (and their unique functional differences) in mind. This study addressed fibroblast heterogeneity by examining expression of α-Smooth Muscle Actin (myofibroblasts) and of S100 Calcium-Binding Protein A4 (S100A4). METHODS/UNASSIGNED:, supported by the evaluation of cord blood from cardiac-NL neonates and their healthy (anti-SSA/Ro-exposed) counterparts, and autopsy tissue from fetuses dying with cardiac-NL, the current study was initiated to more clearly define and distinguish the S100A4-positive fibroblast in the fetal cardiac environment. RESULTS/UNASSIGNED:fibroblasts expressed pro-angiogenic cytokines and proteases that degrade collagen. Cord blood levels of S100A4 in anti-SSA/Ro-exposed neonates tracked disease severity and, in discordant twins, distinguished affected from unaffected. CONCLUSIONS/UNASSIGNED:fibroblast alongside the canonical myofibroblast in the pathogenesis of cardiac-NL. Neonatal S100A4 levels support a novel biomarker of poor prognosis.

OBJECTIVES/OBJECTIVE:This integrated analysis evaluates the efficacy and safety of voclosporin, a novel calcineurin inhibitor, at 23.7 mg twice daily in combination with mycophenolate mofetil (MMF) and oral glucocorticoids in lupus nephritis (LN) using pooled data from two large phase 2 and phase 3 clinical trials. The purpose was to expand the pool of patients for safety analyses and to increase power for efficacy analyses in patient subpopulations. METHODS:AURA-LV (phase 2) and AURORA 1 (phase 3) were randomized, placebo-controlled, double-blind trials with similar designs and endpoints comparing voclosporin to control in combination with MMF and oral glucocorticoids for the treatment of LN. The primary efficacy outcome of the integrated analysis was complete renal response (CRR) at approximately 1 year (Week 48 data from AURA-LV and Week 52 from AURORA 1). Safety was assessed throughout the trials. RESULTS:Overall, 534 patients (voclosporin 268, control 266) were included in the integrated analysis. Significantly more patients achieved a CRR at 1 year in the voclosporin than control group (43.7% vs. 23.3%, OR 2.76; 95% CI 1.88, 4.05 p<0.0001). The incidence of adverse events (AEs) was similar; 91.4% voclosporin and 87.2% control. Most AEs were mild to moderate in severity; the most commonly reported AEs were classified as infections and infestations (62.2% voclosporin, 54.9% control) and gastrointestinal disorders (45.3% voclosporin, 35.3% placebo). No new or unexpected safety signals were detected. CONCLUSIONS:This integrated analysis demonstrates the efficacy and safety of voclosporin in the treatment of LN across the diverse racial and ethnic groups studied. This article is protected by copyright. All rights reserved.

Background/Purpose: Fractures in patients with systemic lupus erythematosus (SLE) are more common than age and sex matched controls. Fracture risk is traditionally assessed by dual-energy X-ray absorptiometry (DEXA) measured BMD and refined using the Fracture Risk Assessment Tool (FRAX). Several studies have demonstrated fractures in SLE patients despite normal DEXA BMD. We hypothesize that changes in bone microarchitecture may explain fracture vulnerability in SLE. This study was initiated to characterize bone quality by evaluating measures of microarchitecture at the proximal femur via 3T MRI in patients with SLE and compare these measurements with a control group of patients with known low bone density (LBD) and osteoporosis (OP).
Method(s): 50 SLE patients and 177 controls with known LBD or OP underwent DEXA and 3T MRI of the non-dominant hip. DEXA measured BMD of the total hip, femoral neck, and spine. LBD was defined as Z score <=-2.0 in premenopausal women and men younger than fifty, and T score <=-1.0 in others. OP was defined as the presence of LBD and history of fragility fracture in premenopausal women and men younger than fifty, and T score <=-2.5 in others. MRI measured favorable microarchitectural characteristics trabecular plate width (PW), trabecular plate-to-rod ratio (PRR), plate volume fraction (PVF), trabecular bone thickness (Tb.Th), and trabecular network area (NA), as well as unfavorable characteristics rod volume fraction (RVF) and trabecular spacing (Tb.Sp). Demographics, medication use and inflammatory markers at the time of the study visit were recorded. Statistical analysis was performed using Pearson correlations, t-scores, and multivariable linear regressions as appropriate.
Result(s): 50 SLE patients and 177 patients with LBD or OP completed all imaging studies. The SLE cohort was younger, and a higher percent of black patients compared to controls (Table 1). SLE patients had lower MRI PW and PRR and higher Tb. Sp as compared to controls, while having higher DEXA BMDs at all sites after adjustment for confounders (Figure 1). SLE patients had an inverse relationship between ESR and PW, PRR, Tb.Th, and NA (Figure 2, A-D). Similar results were found with CRP, which had an inverse relationship with PW, PRR, and NA. Body mass index (BMI) in SLE patients had an inverse relationship between PW, PVF, Tb.Th, and NA (Figure 2, E-H), and a positive relationship between all measured BMDs. In the control group, similar relationships were found between BMI and BMD, but only Tb.Th was inversely associated with BMI. Age, current steroid use, and history of lupus nephritis were not associated with MRI measures of bone microarchitecture.
Conclusion(s): Compared to controls, SLE patients had decreased bone quality as measured by MRI bone microarchitecture, despite having higher DEXA BMD. Elevated inflammatory markers inversely associated with bone quality. Elevated BMI, despite its association with higher BMD, was also associated with lower measures of bone microarchitectural strength, unlike controls. Further connection of bone microarchitecture to fracture risk and change over time in patients with SLE are needed to determine clinical significance of these findings and to guide additional monitoring and potential treatments. A-C: multivariate linear regression adjusting for significant microarchitectural confounders of BMI and gender. D-F: multivariate linear regression adjusting for significant BMD confounders of age, BMI, race, and gender

Background/Purpose: Persistent proteinuria increases the risk of comorbidities in lupus nephritis, and rapid reductions in protein have shown to be predictive of improved long-term renal health. Patients with Class V lupus nephritis may take longer to respond to therapy, and treatments that efficiently reduce proteinuria in this population are needed. We report here on a post-hoc analysis of voclosporin in patients with Class V lupus nephritis using three years of pooled data from the Phase 3 AURORA 1 and AURORA 2 studies.
Method(s): AURORA 1 enrolled patients with biopsy-proven active lupus nephritis, urine protein creatinine ratio (UPCR) >=1.5 mg/mg (>=2.0 mg/mg for pure Class V), and estimated glomerular filtration rate (eGFR) >45 mL/min/1.73 m2. Patients completing AURORA 1 were eligible to enter AURORA 2 on the same blinded therapy (voclosporin or placebo) in combination with mycophenolate mofetil (MMF) and low-dose steroids for up to 3 years of treatment. Hazard ratios (HR) for the time to UPCR <=0.5 mg/mg and mean eGFR levels were assessed in patients with pure and mixed Class V lupus nephritis.
Result(s): A total of 80 patients with Class V lupus nephritis continued treatment in AURORA 2, 31 with pure Class V disease and 49 with mixed lesions. Mean baseline UPCR was 3.4 and 3.3 mg/mg in patients with pure Class V disease treated with voclosporin and control, respectively, and 3.4 and 3.9 mg/mg in voclosporin-and control-treated patients with mixed lesions. The differences between treatment arms in UPCR reductions were apparent within the first month and sustained at three years in both pure and mixed disease. For patients with pure Class V disease, the median times to UPCR <=0.5 mg/mg were 3.6 and 8.3 months in the voclosporin and control arms, respectively (HR 1.93; p=0.167, Figure 1). For patients with mixed lesions, the median times to this outcome were 3.7 and 18.0 months, respectively (HR 5.07; p< 0.0001). Mean corrected eGFR levels were similar in all treatment arms and stable throughout the study (Figure 2). Analysis of AURORA 2 patients with Class V disease includes pooled data from AURORA 1 and AURORA 2. Time to UPCR <=0.5 mg/mg was assessed with a Kaplan Meier analysis. UPCR, urine protein creatinine ratio. Analysis of AURORA 2 patients with Class V disease includes pooled data from AURORA 1 and AURORA 2. Renal function was assessed with corrected eGFR (Chronic Kidney Disease Epidemiology Collaboration equation) using a prespecified ceiling of 90 mL/min/1.73 m2. Analysis of LS mean corrected eGFR over time includes data from a follow up visit at four weeks after study drug discontinuation. CI, confidence interval; eGFR, estimated glomerular filtration rate; FUP, follow up; LS, least squares.
Conclusion(s): Voclosporin-treated patients with pure and mixed Class V lupus nephritis saw substantial reductions in UPCR that occurred faster than in those treated with MMF and low-dose steroids alone. Voclosporin may be beneficial in limiting the negative long-term impact of proteinuria in this population

Background/Purpose: SLE is characterized by autoantibody production. The most common lupus-specific serology is the anti-dsDNA antibody (anti-DNA). Traditionally, anti-DNA is measured by an enzyme immunoassay or equivalent such as multiplex flow immunoassay (EIA), which is considered sensitive. In contrast, the crithidia luciliae immunofluorescence test (CLIFT) is considered more specific. Serial measurement of anti-DNA is often used to monitor lupus disease activity. With NYU's extensive multi-race/ethnic lupus registry, we studied the relationship between these two methods, their association with lupus nephritis (LN), and their ability to predict subsequent flares.
Method(s): Using the NYU Lupus Registry of patients who meet ACR, SLICC, or EULAR criteria, we identified patients who had one or more simultaneous anti-DNA results by multiplex EIA and CLIFT. We report on their concordance (e.g., always, never, or fluctuating), association with LN, and ability to predict flare within 90 days using the SELENA-SLEDAI Flare Index. To account for degree of positivity, we defined tertiles for EIA and CLIFT as low positive [11-50 and 1:10-1:40], mild positive [51-200 and 1:80-1:320], and high positive [> 200 and > 1:640]. Table 1. 586 total visits with paired EIA and CLIFT. H = high positive M = mild positive L = low positive defined in Methods section Table 2. Relationship between EIA, CLIFT and hypocomplementemia with lupus nephritis. Chi-square test comparing significance between 60/100 v 72/100 (EIA/CLIFT) p = 0.07 Table 3. Relationship between EIA, CLIFT, hypocomplementemia and flare within 90 days Results: 207 patients had one or more paired anti-DNA results generating 586 paired results (Table 1). Cohort demographics: 92% Female, 22% Hispanic ethnicity, 24% Black, 16% Asian, 49% White, 10% Other. Overall, 377 pairs were always concordant, and 209 were never concordant. 236 pairs demonstrated titer concordance and 350 with titer discordance. Of the 207 patients, 64 patients had only one and 143 patients had two or more paired tests. Of the 64 patients, 46 were always concordant: 18 had positive EIA/CLIFT and 28 had negative EIA/CLIFT. The remaining 18 patients were never concordant: 8 had +EIA/-CLIFT and 10 had-EIA/+CLIFT. The concordance of the 143 patients with multiple paired results: 73 always, 23 never, and 47 fluctuating. Whether by one or multiple paired tests, 41/207 patients were never concordant. 100 of the 207 patients had LN associated with +EIA in 60 and +CLIFT in 72 (Table 2). Hypocomplementemia was present in 88% of +EIA and 89% of +CLIFT patients with LN. 51 visits in 42 patients had paired anti-DNA results and a SELENA-SLEDAI Flare Index assessment within 90 days. 7 patients had mild flares with +EIA in 4 and +CLIFT in 3. 4 patients had severe flares with +EIA and +CLIFT in 3 (Table 3). Low C3 and or C4 occurred in 1 of 7 (14%) mild flares and in 4 of 4 (100%) severe flares.
Conclusion(s): Our data demonstrate that discordance of positivity between two assays for anti-DNA occurred in 41/207 (20%) patients, in 207/586 (36%) visits and in 350/586 (60%) visits magnitude of positivity nonconcordant. EIA positivity is associated with LN less often than CLIFT positivity. Flares were infrequent and associated with either EIA or CLIFT positivity, with severe flares more likely if accompanied by hypocomplementemia. We recommend the utility of more than one anti-DNA assay in routine monitoring for lupus disease activity

Background/Purpose: Zetomipzomib is a first-in-class selective inhibitor of the immunoproteasome that is active in multiple autoimmune disease models, including murine models of SLE and LN. The MISSION study (NCT03393013) is a Phase 1b/2, open-label study to evaluate safety, tolerability, and preliminary efficacy of zetomipzomib in patients with SLE with +/- LN. In the previously reported Phase 1b portion, zetomipzomib demonstrated a favorable safety and tolerability profile in patients with active SLE +/- LN and resulted in improvement across multiple exploratory disease activity measures as well as biomarkers. Phase 2 fully enrolled in Nov 2021, and interim results from this signal-seeking study are reported here.
Method(s): The MISSION Phase 2 study evaluated zetomipzomib 60 mg subcutaneously once weekly for 24 weeks (1st dose: 30 mg) in patients with active LN (Class III or IV +/- Class V) with urine protein to creatinine ratio (UPCR) >=1 despite stable background therapy with corticosteroids and at least one immunosuppressive. The primary endpoint was the number of patients with a 50% reduction in UPCR from baseline after 24 weeks of treatment. Safety, tolerability, UPCR, renal response parameters (e.g., complete renal response [CRR] and partial renal response [PRR])*, renal function, SLE disease activity and biomarkers were measured, and an interim analysis was performed. *CRR was defined as UPCR <=0.5, eGFR >=60 mL/min/1.73m2 or no worsening of eGFR from baseline of >=25%, prednisone (or equivalent) <=10 mg and no use of prohibited medication. PRR was defined as 50% reduction in UPCR and/or UPCR < 1 (if baseline UPCR < 3) and/or UPCR< 3 (if baseline UPCR >=3), eGFR >=60 mL/min/1.73m2 or no worsening of eGFR from baseline of >=25% and no use of prohibited medication. CRR and PRR were calculated using absolute UPCR values.
Result(s): As of October 1, 2021, 10 patients had reached study week (W) 13; 80% were female with mean age 39.4 years, median LN duration 7.6 years, mean 24-hour UPCR 2.2 and mean eGFR 78.5 mL/min/1.73m2 at baseline. All 10 patients were on prednisone (or equivalent), 8 patients were also taking mycophenolate mofetil or mycophenolic acid, and 5 patients were also taking hydroxychloroquine. Five patients had reached the end of treatment visit (W25). Following 24 weeks of zetomipzomib therapy, 3 of 5 patients achieved a >=50% reduction in UPCR; 4 of the 5 patients had renal responses (2 CRR and 2 PRR). Zetomipzomib administration improved UPCR and anti-dsDNA as early as W13 and was associated with a favorable safety and tolerability profile. The most common adverse event (AE) was injection site reaction. Most reported AEs were mild to moderate (<=Grade 2). Two Serious AEs were reported in 2 patients (1 related and 1 unrelated to treatment). There were no study discontinuations due to drug-related AEs. No opportunistic infections were reported.
Conclusion(s): An interim analysis of MISSION Phase 2 demonstrated that zetomipzomib added to stable background medications led to an overall renal response in 4 of the first 5 patients to complete treatment. Zetomipzomib maintained a favorable safety and tolerability profile over the six-month treatment period. The MISSION Phase 2 is fully enrolled, and an updated analysis of the completed study will be shared

Background/Purpose: Musculoskeletal (MSK) symptoms are common in SLE, often associate with debilitating pain requiring immunosuppressive treatment. JBT-101 is a non-psychotropic, non-immunosuppressive, cannabinoid receptor 2 agonist that stimulates resolution of inflammation by increased production of specialized pro-resolving mediators and decreased production of inflammatory molecules. Our goal was to test efficacy and safety of JBT-101 for treatment of inflammatory MSK disease in SLE.
Method(s): Adults (18-70 years) meeting SLE ACR criteria with active MSK symptoms (SLEDAI arthritis or BILAG 2004 mild/moderate arthritis), on stable SLE medications and prednisone <=10 mg daily, with average maximum daily pain scores >= 4 on a 10-point numerical rating scale (NRS), were randomized to 12 weeks treatment with placebo (PBO), or 10mg (low), 20mg (med), or 40mg (high) daily of JBT-101. NRS scores were reported daily. Disease activity was assessed at Days 1, 29, 57, 84 and 113; these analyses are pending. The primary endpoint, improvement in NRS score from Days 1 to 84, was analyzed with a mixed effects regression model, that included the screening 7 day average pain NRS and Fibromyalgia Symptom Scale (FSS) scores as covariates to estimate longitudinal trends in NRS and change over time for each treatment group. NRS data up to last day of study treatment were included except days when narcotic analgesics were taken. A secondary endpoint, pain category, was defined using the average 7 day NRS prior to study visits: <= 1 no pain, (>1-<=3) mild, (>3-<=7) moderate, >7 severe.
Result(s): The 101 randomized and treated subjects (Table 1) had a mean screening 7 day average pain NRS=6.6 and mean FSS score of 15.7. FSS scores >=13 are consistent with a fibromyalgia diagnosis; 71.3% had FSS scores >=13. The covariateadjusted estimated change in NRS from Days 1 to 84 was not significantly different between groups:-0.3 PBO,-0.9 low,-1.5 med,-1.2 high (p=.419) (Fig 1). Pairwise-comparisons of active arms versus PBO were not significant (all p >.3, Bonferroni corrected). Among 84 subjects with NRS data at the end of the treatment period at Day 85, pain improved by at least 1 pain category from baseline for 3 (14%) PBO, 10 (45%) low dose, 8 (38%) med dose, and 9 (47%) high dose subjects (p=0.083 overall, Cochran-Mantel-Haenszel C2; p=0.012 pooled active vs PBO, Pearson's C2.). No grade 4 or 5 adverse events (AEs) were observed (Table 2). 75 subjects experienced at least 1 grade 2 or 3 AE: 20 (80%) PBO, 19 (79%) low, 21 (78%) mod, 15 (60%) high. 5 subjects experienced treatment-related AEs resulting in study drug discontinuation: 1 (4%) med, 4 (16%) high, all were Grade 2. 6 subjects experienced serious AEs: 2 (8%) PBO, 3 (11%) med, 1 (4%) high; all unrelated to study drug. 2 subjects in each active arm experienced severe disease flares (excluding MSK domain), compared to 3 in PBO.
Conclusion(s): JBT-101 was safe and well-tolerated. While the pre-specified mixed effects model did not identify significant differences between changes in NRS pain scores in active arms vs. PBO, the frequency of pain category improvement at Day 84 was notably higher in the active arms vs PBO. Further analyses, including those of SLEDAI, BILAG and PGA, may identify patients most likely to respond to JBT-101. NCT03093402

Introduction Fetal cardiac disease is strongly associated with maternal anti-SSA/Ro antibodies, but gaps in our knowledge include the influence of antibody specificity and titer, maternal diagnosis, overall non-cardiac adverse pregnancy outcomes (APOs), optimal surveillance protocols, and efficacy of rapid treatment. Methods The multi-center Surveillance and Treatment To Prevent Fetal AV Block Likely to Occur Quickly (STOP BLOQ) study recruited pregnant women with commercially positive anti-Ro antibodies and stratified them into high and low titers of anti-Ro60 and Ro52 based on a research ELISA, using a cutoff defined by that obtained for 50 mothers with previous AVB offspring. Mothers with anti-Ro60 and/or 52 antibodies at or above 1,000 I.U. were trained to perform FHRM. From 17-25 weeks of gestation, FHRM was completed 3x/day in addition to weekly or biweekly fetal echocardiograms (echo). Mothers texted all audio sounds to the coordinating center. Texts deemed abnormal by mothers were immediately sent to an on call pediatric cardiologist who either reassured if FHRM was normal or referred for emergency fetal echo in < 6 hours if abnormal. Results 250 anti-Ro pregnant women (22% Hispanic, 50% white, 12% Black, 12% Asian, 4% other) have been consented, including 28 whose previous child had AVB. Of mothers tested to date, 153 were provided home monitors given high titer anti-Ro60 and/or 52 antibodies (26 high titer anti-Ro60 alone, 21 high titer anti-Ro52 alone,105 high titer antibodies to both antigens). The 83 patients with low titers were surveilled with echos per local standard of care. Regarding maternal diagnosis, of 161 assessed to date, 39% were asym/UAS, 11% RA, 31% SS, 19% SLE. Antibody titers did not significantly differ by ethnicity, race or diagnosis (table 1). Non-AVB APOs occurred in 18% and were not predicted by Ro60 or 52 titers but rather SLE diagnosis (table 2). In total, 24,759 FHRM audiotexts were received from 131 patients (90 of whom have delivered) during the monitoring period. Of these, 22 were evaluated by the on-call pediatric cardiologist, who prompted an emergency echo (all completed in < 6 hrs). In 11 cases, the emergency echo was normal. In 9, there were premature atrial contractions, confirming the mother's perception. In 2 with 2degree block on urgent echo (both treated per protocol with IVIG and dexamethasone), 1 reverted to normal sinus rhythm and the other progressed to 3degree block. In 2 others, the mother did not perceive abnormal FHRM for > 24 hrs, echo identified 3degree block, and retrospective cardiology review of FHRM audio captures identified an abnormality prior to obtaining the echo. All 4 AVB developed in fetuses of mothers with high titer antibodies to both Ro60 and 52 (mean 32,451 and 34,991 respectively). Of the 18 mothers with a previous AVB child who followed the 400mg hydroxychloroquine PATCH protocol, 1 developed AVB in accord with the results of Step 1 in that study. Conclusion These data support that APOs in this clinically diverse group of mothers are not influenced by anti-Ro titer or specificity, but rather SLE diagnosis. All conduction defects were initially identified by FHRM and in mothers with high titer anti-Ro60 and 52. Hydroxychloroquine continues to show efficacy in reducing the AVB recurrence rate with rapid intervention of emergent block being promising

Background Voclosporin (VCS), a novel calcineurin inhibitor, was approved in the US in January 2021 for the treatment of adult patients with active lupus nephritis (LN) in combination with background immunosuppressive therapy. The Phase 3 AURORA 1 study showed that the addition of VCS to mycophenolate mofetil (MMF) and low-dose steroids in patients with LN significantly increased rates of complete renal response at 52 weeks. Here we report the results of the completed continuation study, AURORA 2, which assessed the long-term safety and tolerability of VCS compared to placebo in patients with LN receiving treatment for an additional 24 months following completion of the AURORA 1 study. Methods Key inclusion criteria for the parent AURORA 1 study included a diagnosis of biopsy-proven active LN (Class III, IV, or V +/- III/IV), proteinuria >=1.5 mg/mg (>=2 mg/mg for Class V) and estimated glomerular filtration rate (eGFR) >45 mL/min/1.73 m². Patients who completed AURORA 1 were eligible to enter AURORA 2 to continue on the same blinded therapy as at the end of AURORA 1 (either VCS or placebo twice daily in combination with MMF and low-dose steroids). Safety and tolerability were monitored, and eGFR, serum creatinine (SCr), and urine protein creatinine ratio (UPCR) were also assessed. Results In total, 116 and 100 patients in the VCS and control arms enrolled in AURORA 2. There were no unexpected safety signals in the VCS arm compared to control, with similar rates of serious adverse events reported in both arms (VCS [18.1%] vs. control [23.0%]; table 1). Eight patients in each arm experienced serious adverse events of infection; serious coronavirus infections were observed in two patients in the voclosporin arm and 5 patients in the control arm. There were 4 and 2 adverse events by preferred term of renal impairment reported in the VCS and control arms, respectively, none of which were considered serious, and no reports of acute kidney injury by preferred term in either arm. There were no deaths in the VCS arm during AURORA 2; four deaths were reported in the control arm (pulmonary embolism [n=1], coronavirus infection [n=3]). Mean eGFR and SCr levels remained stable through the end of AURORA 2. The difference between the VCS and control arms in LS mean change from baseline in eGFR was 2.7 mL/min/1.73 m² at 4 weeks following study drug discontinuation (figure 1). The mean reductions in UPCR observed in patients treated with VCS in AURORA 1 were maintained in AURORA 2 with no increase in UPCR noted at the follow-up visit 4 weeks after study drug discontinuation. Conclusion Voclosporin was well-tolerated over 3 years of treatment with no unexpected safety signals detected. Further, eGFR remained stable throughout the study period and the significant and meaningful reductions in proteinuria achieved in AURORA 1 were maintained. These data provide evidence of a long-term treatment benefit of VCS in patients with LN. Disclosures AS reports payments for Aurinia Pharmaceuticals Inc. speaker bureaus; primary investigator for Aurinia Pharmaceuticals Inc. clinical trials; advisory fees from Eli Lilly, Astra-Zeneca, GlaxoSmithKline and Kezar Life Sciences. YKOT reports research grants from commercial organizations including an unrestricted research grant from GlaxoSmithKline and Aurinia Pharmaceuticals Inc.; primary investigator for Aurinia Pharmaceuticals Inc. clinical trials; consultancy fees paid to institution from Aurinia Pharmaceuticals Inc., Novartis, GlaxoSmithKline, KezarBio, Vifor Pharma and Otsuka Pharmaceuticals. CC, NE, and HL are employees and shareholders of Aurinia Pharmaceuticals, Inc. HL is an employee and shareholder of Aurinia Pharmaceuticals, Inc. Data first presented by Saxena A et al. at the EULAR Congress June 1-4, 2022. Editorial support provided by MediComm Partners Ltd. Aurinia Pharmaceuticals Inc. provided funding for the study and presentation

Background/Purpose: Patients with systemic lupus erythematosus (SLE) are at high risk for severe disease from COVID-19 and decreased vaccine efficacy, due to inherent immune perturbations and frequent immunosuppressant use. The impact of vaccine responses was "pressure" tested in New York City (NYC) from December 2021-February 2022, due to the highly infectious omicron BA.1 variant which resulted in a significant increase in COVID-19 cases and hospitalizations. This study was performed to assess clinical efficacy and seroreactivity in SLE patients with and without an additional vaccination dose after initial vaccine series, particularly during the omicron BA.1 surge in NYC.
Method(s): COVID-19 infections after vaccination were evaluated during patient encounters and chart review in subjects from the NYU Lupus Cohort who received an initial SARS-CoV-2 vaccine series with follow-up for at least 6 months or until breakthrough infection. Clinical follow-up was required after February 4, 2022 (when NYC COVID-19 cases returned to their preomicron BA.1 baseline), with last patient follow-up recorded April 24, 2022. Positive PCR or antigen-based testing was required, performed at the clinical site or self-reported. Fifty-seven patients receiving additional vaccine doses were evaluated longitudinally for recombinant SARS-CoV-2 spike receptor binding domain antibodies (#BT10500; R&D Systems). Low post-vaccine antibody response was defined as <=100 units/ml.
Result(s): Among the 163 subjects evaluated, 125 (76.7%) received an additional COVID-19 vaccination after the initial series. Demographics and medication usage were similar in patients who did and did not receive the additional vaccination dose, with 50% on at least one immunosuppressant and 16% on more than one at the time of the initial vaccine. Twentyeight (63.6%) of the 44 patients with a breakthrough infection had received an additional vaccination compared to 97 (81.5%) of the 119 without breakthrough infection (p=0.022) (Table 1). Of the 44 COVID-19 cases, only 2 occurred prior to the omicron wave, both in patients who did not receive the additional dose. There were no COVID-19 related deaths and two patients were hospitalized. Among the 57 patients with serologic evaluation, the median antibody level after initial vaccination series was 397 u/mL (IQR 57-753), and 1036 (IQR 517-1338.5) after the additional dose. After initial vaccination, 21 (37%) had low ELISA responses, but only 4 (7%) continued to have low responses after the additional dose. There was no association between the level of antibody after the additional dose and COVID-19 breakthrough.
Conclusion(s): SLE patients from a cohort of patients in NYC who received an additional SARS-CoV-2 vaccine dose were significantly less likely to have a subsequent COVID-19 infection compared to those who only completed their initial vaccine series. SLE patients demonstrated an improvement in serologic response after an additional dose of SARS-CoV-2 vaccine. The mild disease in all vaccinated patients is reassuring given the risks inherent and frequent immunosuppressant use in this patient population