Uveitis in psoriatic arthritis: study of 406 patients in a single university center and literature review.

BACKGROUND/PURPOSE: The manifestations of uveitis are well established in axial spondyloarthritis (ax-SpA), but not in psoriatic arthritis (PsA). We aimed to assess, in a large unselected series of PsA: (A) the frequency and clinical features of uveitis; (B) its association with PsA activity, the impact of disease and functional disability, and (C) its relationship with the biological treatment. In addition, a literature review was performed. METHODS: Retrospective longitudinal study of PsA patients from a single referral hospital. PsA was classified according to the CASPAR criteria, and uveitis was diagnosed by experienced ophthalmologists. RESULTS: We studied 406 patients with PsA (46.3±12.3 years). Uveitis was observed in 20 (4.9%). Uveitis was acute in all cases, anterior (80%), unilateral (80%) and recurrent (50%). Patients with uveitis had a higher prevalence of HLA-B27 (45% vs 7.5%, p<0.0001), sacroiliitis on MRI (25% vs 8.3% p=0.027), ocular surface pathology (10% vs 0.8%, p=0.021), and median PsA impact of Disease Score (5.9 (2.1-6.8) vs 1.25 (0.0-3.0), p=0.001) and Bath Ankylosing Spondylitis Functional Index (4 (1.6-5) vs 1.0 (0.0-3.5), p=0.01) than patients without uveitis.The exposure adjusted incidence rate (episodes/100 patients-year) of uveitis before versus after biological treatment decreased with anti-TNFα monoclonal antibodies (56.3 vs 9.4) and increased with etanercept (ETN) (6.03 vs 24.2) and secukinumab (SECU) (0 vs 50) (including only one patient treated in the last two cases). CONCLUSION: The prevalence of uveitis in patients with PsA was about 5%. The pattern was similar to that observed in ax-SpA. Uveitis was associated with a worse quality of life and greater functional disability. The uveitis exposure adjusted incidence rate decreased with anti-TNFα monoclonal antibodies and increased with ETN and SECU.

Systemic treatment in sarcoidosis: Experience over two decades.

OBJECTIVE: The aim of this study was to evaluate the frequency of systemic treatment in a cohort of sarcoidosis patients and identify presenting clinical features as predictive factors of the need for systemic immunosuppressive therapy. METHODS: Retrospective study of 342 patients diagnosed and followed-up from January 1999 to December 2019 in a University Hospital in Northern Spain. The diagnosis of sarcoidosis was established according to ATS/ERS/WASOG criteria. A comparative analysis was performed between treated and untreated patients. Predictive factors of treatment prescription according to initial clinical manifestations were identified (multivariate analysis). RESULTS: Mean age at diagnosis was 47.7±15.1 years, with a slight female predominance (51.8%) and Caucasian majority (94.2%). The main clinical manifestation was thoracic involvement (88.3%). Extrathoracic manifestations were detected in 68.4% cases, mainly cutaneous (34.2%), articular (27.8%) and ocular (17.8%). A total of 207 (60.5%) patients required systemic treatment. Glucocorticoid therapy was the most widely used (60.5%). Conventional immunosuppressive therapy in 25.4%, more frequently MTX (21.9%). Biologic therapy was prescribed in 12.9%, especially adalimumab (9.1%). Male gender (OR: 1.65; 95%CI: 1.06-2.56), intrathoracic (OR: 2.41; 95%CI: 1.22-4.76), ocular (OR: 4.14; 95%CI: 2.01-8.52), parotid (OR: 1.60; 95%CI: 1.39-1.94), neurological (OR: 5.00; 95%CI: 1.68-14.84), and renal (OR: 1.59; 95%CI: 1.38-1.94) involvement were identified as risk factors associated with the need of systemic treatment. CONCLUSION: Most patients (60.5%) of sarcoidosis in our series required systemic therapy. An association between certain characteristics at initial presentation (male gender, lung, ocular, parotid, neurological and renal involvement) and the need of systemic treatment was identified.

Baricitinib in severe and refractory peripheral ulcerative keratitis: a case report and literature review.

Ocular disease, such as scleritis and peripheral ulcerative keratitis (PUK), may be a serious ocular complication. We present a patient with severe and refractory PUK treated with baricitinib. A review of the literature on Janus kinase inhibitors (JAKINIB) in refractory ocular surface pathology was also performed. For the literature review, the search in PubMed, Embase, and the Cochrane library was carried out from inception until 31 May 2021, including conference proceedings from four major rheumatology congresses. All original research articles studying JAKINIB treatment in patients with inflammatory eye disease were included. We present an 85-year-old woman with rheumatoid arthritis (RA) and secondary Sjögren's syndrome refractory to methotrexate, leflunomide, certolizumab pegol, adalimumab, and tocilizumab (TCZ). However, 10 months after starting TCZ, the patient suffered a perforation secondary to PUK, requiring urgent surgical intervention. In the absence of infection, she was treated with boluses of intravenous methylprednisolone followed by oral prednisone at high doses in a decreasing pattern together with baricitinib at a dose of 2 mg/day with a very rapid and persistent favorable response to eye and joint symptoms. After 18 months of treatment, the patient had not presented serious side effects or signs of reactivation of her disease. In addition to this report, three other studies including one PUK associated with RA and two non-infectious scleritis treated with tofacitinib were included in this literature review. All three patients had experienced an insufficient response to conventional treatment, including biologic agents, before being switched to JAKINIB, leading to a complete or partial recovery in all of them without significant adverse effects so far. JAKINIBs (baricitinib and tofacitinib) may be an effective and safe therapy in patients with severe autoimmune and refractory ocular surface pathology, such as scleritis and PUK.

Cardiovascular and disease-related features associated with extra-articular manifestations in axial spondyloarthritis. A multicenter study of 888 patients.

OBJECTIVES: To determine the potential impact of extra-articular manifestations (EAMs) on disease characteristics and cardiovascular (CV) risk in patients with axial spondylarthritis (axSpA). METHODS: This is a cross-sectional study from the AtheSpAin cohort, a Spanish multicenter cohort to study atherosclerosis in axSpA. Data on the history of CV events, subclinical carotid atherosclerosis, and disease-related features, including EAMs, were collected. RESULTS: 888 axSpA patients were recruited. Concomitant acute anterior uveitis (AAU), psoriasis (PSO), and inflammatory bowel disease (IBD) were present in 177 (19.9%), 96 (10.8%), and 57 (6.4%) patients, respectively. When compared with axSpA patients without EAMs, a significant increase in past CV events was observed in patients with PSO (9% versus 4%, p = 0.048) and in those with at least one EAM (7% versus 4%, p = 0.032) or with more than one EAM (11% versus 4%, p = 0.022). The frequency of carotid plaques and the values of cIMT were higher in patients with EAMs than in those without EAMs, although only the univariable analysis for carotid plaques in patients with PSO (39% versus 30%, p = 0.038) and for cIMT in patients with AAU (665 ± 156 µm versus 637 ± 139 µm, p = 0.042) and those with at least one EAM (661 ± 155 µm versus 637 ± 139 µm, p = 0.024) showed significant results. In addition, patients with PSO or IBD were found to have specific disease-related features, such as higher ESR at diagnosis, and more frequent use of glucocorticoids and TNF inhibitors than those without EAMs. Also, PSO patients had more commonly peripheral involvement and those with AAU more severe radiographic damage than those without EAMs. The frequency of HLA B27 was higher in patients with AAU and lower in those with PSO or IBD compared to those without EAMs. CONCLUSION: Patients with axSpA and EAMs, in addition to displaying their own disease-related features, are likely to have an increased CV risk that appears proportional to the number of EAMs and could be related to proatherogenic factors other than traditional CV risk factors, such as the inflammatory load and the use of glucocorticoids.

Irisin as a Novel Biomarker of Subclinical Atherosclerosis, Cardiovascular Risk and Severe Disease in Axial Spondyloarthritis.

Introduction: Patients with axial spondyloarthritis (axSpA) have a high disease burden mainly due to the rheumatic disease itself, and also exhibit accelerated atherosclerosis, that leads to a higher incidence of cardiovascular (CV) disease. Accordingly, the identification of biomarkers of CV risk and inflammation in axSpA patients is clinically relevant. In this sense, given the beneficial functions exerted by the adipomyokine irisin in processes related to CV disease and inflammation, our aim was to assess, for the first time, the role of irisin as a genetic and serological biomarker of subclinical atherosclerosis, CV risk and disease severity in axSpA patients. Methods: A large cohort of 725 Spanish patients with axSpA was included. Subclinical atherosclerosis (presence of plaques and abnormal carotid intima-media thickness values) was evaluated by carotid ultrasound. Four irisin polymorphisms (rs16835198 G/T, rs3480 A/G, rs726344 G/A, and rs1570569 G/T) were genotyped by TaqMan probes. Additionally, serum irisin levels were determined by ELISA. Results: Low irisin levels were linked to the presence of plaques (p=0.002) and atherogenic index values ≥4 (p=0.01). Serum irisin were positively correlated with C-peptide levels (p<0.001) and negatively correlated with visual analogue scale and Bath Ankylosing Spondylitis Metrology Index (p<0.05 in all the cases). Moreover, lower irisin levels were observed in patients with sacroiliitis and in those with a negative HLA-B27 status (p<0.001 and p=0.006, respectively), as well as in those treated with non-steroidal anti-inflammatory drugs and conventional disease-modifying antirheumatic drugs (p<0.001 and p=0.002, respectively). Interestingly, the TT genotype and the T allele of rs16835198 were less frequent in axSpA patients with ASDAS >2.1 (Odds Ratio (OR): 0.48 [0.28-0.83] and OR: 0.73 [0.57-0.92], respectively, p=0.01 in both cases). Additionally, the frequency of rs1570569 T allele was higher in these patients (OR: 1.46 [1.08-1.97], p=0.01). Furthermore, the GGGT haplotype was more frequent in patients with ASDAS values >2.1 (OR: 1.73 [1.13-2.66], p=0.01). Conclusions: Our results indicate that low serum irisin levels could be indicators of the presence of subclinical atherosclerosis, high CV risk and more severe disease in axSpA patients. In addition, irisin may also constitute a genetic biomarker of disease activity in axSpA.

Factors associated with atherosclerosis in radiographic and non-radiographic axial spondyloarthritis. A multicenter study on 838 patients.

OBJECTIVES: To identify disease-related factors associated with subclinical atherosclerosis and cardiovascular (CV) events in a large series of patients with axial spondyloarthritis (axSpA) and to identify possible differences in the effect of the potential pro-atherogenic factors between ankylosing spondylitis (AS) non-radiographic axSpA (nr-axSpA). METHODS: This is a cross-sectional observational study of the AtheSpAin cohort, a Spanish multicenter cohort to study atherosclerosis in axSpA. Subclinical atherosclerosis determined by carotid ultrasound included assessment of carotid intima-media thickness (cIMT) and plaque detection. RESULTS: 639 AS and 167 nr-axSpA patients were recruited. CV risk factors (CRF) and several disease-related factors showed a statistically significant association with subclinical atherosclerosis in the crude analysis. After adjustment for age, sex, and smoking (model 1), associations remained statistically significant for spinal mobility, inflammatory bowel disease, use of prednisone, and Disease-modifying antirheumatic drugs (DMARD) when assessing carotid plaques and for acute phase reactants (APR) at diagnosis, use of prednisone, DMARD, and TNF-inhibitors when measuring cIMT. In model 2, which also included classic CRF as confounding factors to identify axSpA features with a potential independent pro-atherogenic effect, the functional status was the only variable significantly associated with plaques and the use of prednisone and APR at diagnosis with cIMT. No association differences were found between both subtypes of patients. Besides, APR at diagnosis were also associated with subsequent development of CV events that had occurred in 33 patients. CONCLUSION: Apart from CRF, atherosclerotic disease in AxSpA is associated with disease-related factors such as inflammatory response and disease severity, with no differences between AS and nr-axSpA.

Biologic therapy in refractory neurobehçet's disease: a multicentre study of 41 patients and literature review.

OBJECTIVES: To assess efficacy and safety of biologic therapy (BT) in neurobehçet's disease (NBD) refractory to glucocorticoids and at least one conventional immunosuppressive drug. METHODS: Open-label, national, multicentre study. NBD diagnosis was based on the International Consensus Recommendation criteria. Outcome variables were efficacy and safety. Main efficacy outcome was clinical remission. Other outcome variables analysed were glucocorticoid-sparing effect and improvement in laboratory parameters. RESULTS: We studied 41 patients [21 women; age 40.6 (10.8) years]. Neurological damage was parenchymal (n = 33, 80.5%) and non-parenchymal (n = 17, 41.5%). First BTs used were infliximab (n = 19), adalimumab (n = 14), golimumab (n = 3), tocilizumab (n = 3) and etanercept (n = 2). After 6 months of BT, neurological remission was complete (n = 23, 56.1%), partial (n = 15, 37.6%) and no response (n = 3, 7.3%). In addition, median (IQR) dose of oral prednisone decreased from 60 (30-60) mg/day at the initial visit to 5 (3.8-10) mg/day after 6 months (P < 0.001). It was also the case for mean erythrocyte sedimentation rate [31.5 (25.6)-15.3 (11.9) mm/1st h, P = 0.011] and median (IQR) C-reactive protein [1.4 (0.2-12.8) to 0.3 (0.1-3) mg/dl, P = 0.001]. After a mean follow-up of 57.5 months, partial or complete neurological remission persisted in 37 patients (90.2%). BT was switched in 22 cases (53.6%) due to inefficacy (n = 16) or adverse events (AEs) (n = 6) and discontinued due to complete prolonged remission (n = 3) or severe AE (n = 1). Serious AEs were observed in two patients under infliximab treatment. CONCLUSIONS: BT appears to be effective and relatively safe in refractory NBD.

Long-term survival of renal transplantation in patients with lupus nephritis: experience from a single university centre.

OBJECTIVES: Lupus nephritis (LN) is a severe complication of systemic lupus erythematosus (SLE). Unfortunately, 10-20% of patients with LN develop end-stage renal disease (ESRD), and renal transplantation may be a therapeutic option. However, concerns about LN recurrence after transplant have been reported. We aimed to assess long-term post-transplant graft and patient survival in LN compared to patients with non-autoimmune nephropathy (polycystic kidney disease - PCKD). METHODS: We carried out a single-centre retrospective study of all patients who underwent renal transplantation due to LN in a referral unit between 1980 and 2018. This cohort was compared with a group of PCKD patients. The main outcome variables were graft and patient survival for up to 20 years, and the time-course of serum creatinine and proteinuria in the first 5 years after transplantation. Cumulative survival rates were estimated by the Kaplan-Meier method and compared using the log-rank test. RESULTS: We included 53 patients: LN group (n=21) and PCKD group (n=32). Baseline clinical characteristics were similar in both groups, except age at transplantation (39.8±11.3 years in the LN group and 46.6±5.0 years in the PCKD group; p=0.004). No significant differences were found regarding graft (p=0.59) or patient survival (p=0.087) at 20 years of follow-up. CONCLUSIONS: Despite concerns about LN recurrence after renal transplantation, this study shows that this procedure might be a safe alternative therapy for ESRD related to SLE and may provide long-term survival.

Intravenous methylprednisolone induces rapid improvement in non-infectious uveitis: a multicentre study of 112 patients.

OBJECTIVES: Rapid control of intraocular inflammation in non-infectious uveitis (NIU) is mandatory to avoid irreversible structural and functional damage. In this study, we assessed the efficacy and safety of intravenous methylprednisolone (IVMP) pulses in the treatment of NIU. METHODS: A retrospective case series of 112 patients who received IVMP for the treatment of NIU, either isolated or associated with different underlying diseases, was studied. Intraocular inflammation (anterior chamber cells and vitritis) was the primary outcome measure. Secondary outcome measures were macular thickness and best corrected visual acuity (BCVA). Patients were assessed at baseline visit, and at days 2-5, 7, 15 and 30 after initiation of IVMP pulse therapy. RESULTS: A total of 112 patients (mean age 42±14.5 yrs) were assessed. An underlying immune-mediated disease was diagnosed in 73 patients. Inflammatory ocular patterns were panuveitis (n=68), posterior uveitis (n=30), anterior uveitis (AU) (n=12), and intermediate uveitis (n=2). Additionally, patients presented cystoid macular oedema (CME) (n=50), retinal vasculitis (n=37), and exudative retinal detachment (n=31). Therapies used before IVMP included intraocular glucocorticoids (n=4), high-dose oral systemic glucocorticoids (n=77), and conventional (n=107) or biologic (n=40) immunosuppressive drugs. IVMP dose ranged from 80 to 1,000 mg/day for 3-5 consecutive days. Improvement was observed in AU, vitritis, BCVA, CME, and retinal vasculitis. At first month evaluation, total remission was achieved in 19 patients. Side effects of IVMP were respiratory infections (n=3), uncontrolled hyperglycaemia (n=1), herpes zoster (n=1), and oral candidiasis (n=1). CONCLUSIONS: IVMP pulse therapy was effective and safe, and achieved rapid control of NIU.

Potential relation of cardiovascular risk factors to disease activity in patients with axial spondyloarthritis.

BACKGROUND: Axial spondyloarthritis (axSpA) patients are known to have a higher prevalence of several comorbidities, including, among others, an increased risk of atherosclerosis, hypertension, dyslipidemia, and diabetes. The purpose of the present study was to determine whether the sum of traditional cardiovascular (CV) risk factors is related to disease characteristics, such as disease activity, in patients with axSpA. METHODS: A cross-sectional study that encompassed 804 patients with axSpA was conducted. Patients were assessed for the presence of five traditional CV risk factors (diabetes mellitus, dyslipidemia, hypertension, obesity, and smoking status), and disease activity measurements. A multivariable regression analysis was performed to evaluate whether the number of classic CV risk factors was independently associated with specific features of the disease, to include disease activity. RESULTS: A multivariable analysis showed that Ankylosing Spondylitis Disease Activity Score-C reactive protein (ASDAS-CRP) activity score was significantly higher in patients with 1 [beta coefficient 0.3 (95% confidence interval (CI) 0.1-0.5), p = 0.001] and ⩾2 [beta coefficient 0.5 (95% CI 0.3-0.7), p = 0.000] CV risk factors compared with those without CV risk factors. Similarly, patients with 1 [OR 2.00 (95%CI 0.99-4.02), p = 0.053] and ⩾2 [OR 3.39 (95%CI 1.82-6.31), p = 0.000] CV risk factors had a higher odds ratio for the presence of high disease activity compared with the zero CV category. The Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) activity score was significantly associated with the number of CV risk factors, being higher in patients with more CV risk factors. These relationships showed a CV risk factor-dependent effect being beta coefficients and ORs higher for the effect of ⩾2 over 1 CV risk factor. CONCLUSION: Among patients with axSpA, as the number of traditional CV risk factors increased, disease activity similarly increases in an independent manner.

Vaspin in atherosclerotic disease and cardiovascular risk in axial spondyloarthritis: a genetic and serological study.

BACKGROUND: Vaspin is a novel anti-inflammatory adipokine associated with cardiovascular (CV) disease and inflammation in chronic inflammatory conditions different from axial spondyloarthritis (axSpA). Given the high incidence of CV disease (mainly due to accelerated atherosclerosis) exhibited by axSpA patients, we wondered if vaspin could also be a key molecule in this process. However, data on the role of vaspin regarding atherosclerotic disease in the context of axSpA is scarce. For this reason, we aimed to evaluate the implication of vaspin, at the genetic and serological level, in subclinical atherosclerosis and CV risk in axSpA. METHODS: This study included 510 patients diagnosed with axSpA. Carotid ultrasound (US) was performed to evaluate the presence of subclinical atherosclerosis. Three vaspin gene variants (rs2236242, rs7159023, and rs35262691) were genotyped by TaqMan probes. Serum vaspin levels were assessed by enzyme-linked immunosorbent assay. Statistical analysis was performed using STATA® v.11.1. RESULTS: Serum vaspin levels were significantly higher in female patients than in males and also in obese patients when compared to those with normal weight (p < 0.05). At the genetic level, we disclosed that the minor allele of rs2236242 (A) was associated with lower serum vaspin levels in axSpA, while the rs7159023 minor allele (A) was linked to higher serum levels (p < 0.05). When the three polymorphisms assessed were combined conforming haplotypes, we disclosed that the TGC haplotype related to high serum levels of vaspin (p = 0.01). However, no statistically significant association was observed between vaspin and markers of subclinical atherosclerosis, both at the genetic and serological level. CONCLUSIONS: Our results revealed that vaspin is linked to CV risk factors that may influence on the atherosclerotic process in axSpA. Additionally, we disclosed that serum vaspin concentration is genetically modulated in a large cohort of patients with axSpA.

Subclinical atherosclerotic disease in ankylosing spondylitis and non-radiographic axial spondyloarthritis. A multicenter study on 806 patients.

OBJECTIVES: To compare the atherosclerosis disease burden between ankylosing spondylitis (AS) and non-radiographic (nr) axial spondyloarthritis (axSpA) and establish a model that allows to identify high-cardiovascular (CV) risk in axial spondyloarthritis patients. METHODS: Cross-sectional study from the AtheSpAin cohort, a Spanish multicenter cohort aimed to study atherosclerosis in axSpA. Carotid ultrasound (US) was performed to determine the carotid intima-media wall thickness (cIMT) and detect the presence of carotid plaques. The European cardiovascular disease risk assessment model, the Systematic COronary Risk Evaluation (SCORE), was also applied. RESULTS: A set of 639 patients with AS and 167 patients with nr-axSpA without history of CV events were recruited. AS patients were older showing more CV risk factors and higher values of C reactive protein and erythrocyte sedimentation rate (ESR) than those with nr-axSpA. However, no difference in the prevalence of carotid plaques or in the cIMT was found between both groups in the adjusted analysis. The percentage of patients reclassified from the low and moderate CV risk categories to the very high-risk category due to the presence of carotid plaques was comparable in AS and nr-axSpA (10.7% versus 10.1% and 40.5% versus 45.5%, respectively). A model containing age, BASFI and ESR applied to moderate risk axSpA patients identified 41% of these patients as having very high-risk patients with high specificity (88%). CONCLUSION: The atherosclerosis burden is similar in nr-axSpA and AS. As occurred for AS, more than 40% of axSpA patients included in the category of moderate CV risk according to the SCORE are reclassified into very high risk after carotid US, and a clinically relevant proportion of them can be detected by applying a model containing age, BASFI and ESR.

Immune-related adverse events in patients with solid-organ tumours treated with immunotherapy: a 3-year study of 102 cases from a single centre.

OBJECTIVES: Immune checkpoint blockade therapy (ICBT) increases the anti-tumoural function of the immune system, but it can also induce immune-related adverse events (irAEs). Our aim was to assess the irAEs due to ICBT in patients from a single centre of Northern Spain. METHODS: We set up an observational study of patients treated in monotherapy with ICBT targeted against cytotoxic T-lymphocyte antigen 4 (CTLA-4), programmed cell death 1 (PD-1) or its ligand (PD-L1) for solid organ tumours. All patients were followed up in a single University Hospital from March 2015 to September 2018. RESULTS: We studied 102 patients (63 men/39 women); mean age 60.6±9.7 years, with lung (n=63), melanoma (n=21), kidney (n=11), gastric (n=3), colon (n=3) or bladder (n=1) cancer. Only 7 patients had a previous diagnosis of an immune-mediated disease, specifically: psoriasis (n=2), psoriatic arthritis (n=1), systemic lupus erythematosus (n=1), spondyloarthitis (n=1), rheumatoid arthritis (n=1) and cutaneous lupus (n=1). One of the following ICBT was administered: nivolumab (n=52), pembrolizumab (n=35), atezolizumab (n=10) and ipilimumab (n=5). After a mean follow-up time of 14.4±7.7 months since ICBT onset, 87 (85.3%) patients had experienced irAEs, mostly gastrointestinal, thyroid and musculskeletal manifestations including inflammatory arthralgia (n= 8), arthritis (n= 6) and myositis (n=2). ICBT was discontinued in 41 patients but it was reintroduced in 30 of them after resolution of the adverse event, with a good tolerance in all cases. Thirty-six (41.4%) of the 87 patients required specific treatment (prednisone, levothyroxine, and thiamazol) for the irAEs. CONCLUSIONS: irAEs are frequent in patients undergoing ICBT. Almost half of the patients that have irAEs require treatment. Musculoskeletal manifestations are not uncommon.

Anti-IL-6 Receptor Tocilizumab in Refractory Graves' Orbitopathy: National Multicenter Observational Study of 48 Patients.

Graves' orbitopathy (GO) is the most common extrathyroidal manifestation of Graves' disease (GD). Our aim was to assess the efficacy and safety of Tocilizumab (TCZ) in GO refractory to conventional therapy. This was an open-label multicenter study of glucocorticoid-resistant GO treated with TCZ. The main outcomes were the best-corrected visual acuity (BVCA), Clinical Activity Score (CAS) and intraocular pressure (IOP). These outcome variables were assessed at baseline, 1st, 3rd, 6th and 12th month after TCZ therapy onset. The severity of GO was assessed according to the European Group on Graves' Orbitopathy (EUGOGO). We studied 48 (38 women and 10 men) patients (95 eyes); mean age ± standard deviation 51 ± 11.8 years. Before TCZ and besides oral glucocorticoids, they had received IV methylprednisolone (n = 43), or selenium (n = 11). GO disease was moderate (n =29) or severe (n = 19) and dysthyroid optic neuropathy (DON) (n = 7). TCZ was used in monotherapy (n = 45) or combined (n = 3) at a dose of 8 mg/kg IV every four weeks (n = 43) or 162 mg/s.c. every week (n = 5). TCZ yielded a significant improvement in all of the main outcomes at the 1st month that was maintained at one year. Comparing the baseline with data at 1 year all of the variables improved; BCVA (0.78 ± 0.25 vs. 0.9 ± 0.16; p = 0.0001), CAS (4.64 ± 1.5 vs. 1.05 ± 1.27; p = 0.0001) and intraocular pressure (IOP) (19.05 ± 4.1 vs. 16.73 ± 3.4 mmHg; p = 0.007). After a mean follow-up of 16.1 ± 2.1 months, low disease activity (CAS ≤ 3), was achieved in 88 eyes (92.6%) and TCZ was withdrawn in 29 cases due to low disease activity (n = 25) or inefficacy (n = 4). No serious adverse events were observed. In conclusion, TCZ is a useful and safe therapeutic option in refractory GO treatment.