Relationship between trabecular bone score, bone mineral density and vertebral fractures in patients with axial spondyloarthritis.

BACKGROUND: In patients with axial spondyloarthritis, vertebral fracture risk is elevated and not always correlated with bone mineral density (BMD). Trabecular bone score (TBS) may offer some advantages in the assessment of vertebral fracture risk in these patients. The primary objective of this study was to compare TBS and BMD between axial spondyloarthritis patients depending on their vertebral fracture status. Secondary objectives were to estimate the prevalence of morphometric vertebral fractures, and to explore factors associated with fracture, as well as the interference of syndesmophytes on BMD and TBS. METHODS: A cross-sectional study was conducted. Data were collected on demographic and clinical characteristics, lab results, imaging findings and treatment. Statistical analysis was performed using SPSS v.13 statistical software. RESULTS: Eighty-four patients (60 men and 24 women; mean age of 59 years) were included. Nearly half (47.6%) of them had lumbar syndesmophytes. The rate of morphometric fracture was 11.9%. TBS showed a higher area under the curve (0.89) than total hip, femoral neck and lumbar BMD (0.80, 0.78, and 0.70 respectively) for classifying patients regarding their fracture status. Nonetheless, the differences did not reach statistical significance. Syndesmophytes affected lumbar spine BMD (p < 0.001), but not hip BMD or TBS. Fractures were associated with TBS, total hip BMD, erythrocyte sedimentation rate and C-reactive protein levels. CONCLUSIONS: We identified decreased TBS and total hip BMD, as well as increased erythrocyte sedimentation rate and C-reactive protein levels as factors associated with morphometric vertebral fractures. Unlike lumbar spine BMD, TBS is not affected by the presence of syndesmophytes.

Tocilizumab in Behçet's disease with refractory ocular and/or neurological involvement: response according to different clinical phenotypes.

OBJECTIVES: Anti-IL6R tocilizumab (TCZ) therapy has proved to be useful in the treatment of refractory ocular and/or neurological involvement of Behçet's disease (BD). However, TCZ efficacy in other BD manifestations remains unclear. In this study we aimed to assess the efficacy of TCZ in the different clinical phenotypes of BD. METHODS: This is a multicentre study of BD patients treated with TCZ, due to refractivity to standard systemic treatment. RESULTS: We studied 16 patients (10 men/6 women); mean age 36.5±18.2 years. The main clinical manifestations at TCZ onset were ocular, oral and/or genital ulcers, arthritis, folliculitis and/or neurological involvement. Before TCZ, they had received several conventional and/or biological immunosuppressants, such as methotrexate, cyclosporine, adalimumab or infliximab. TCZ was used in monotherapy or combined with conventional immunosuppressive drugs. The main indications for TCZ prescription were refractory uveitis (n=14) and refractory neurobehçet (n=2). After a median [IQR] follow-up of 20 [9-45] months using TCZ, neurological and ocular domains improved in most cases with complete remission in most patients with uveitis. Articular and peripheral venous manifestations also experienced a favourable evolution. However, oral/genital ulcers, skin lesions and intestinal manifestations followed a torpid course. CONCLUSIONS: TCZ is effective in BD with major clinical involvement. However, it does not seem to be effective in oral/genital ulcers or skin lesions.

Drug Retention Rate and Causes of Discontinuation of Adalimumab in Uveitis: Real-World Data from the Biotherapies in Uveitis (BioÚvea) Study Group.

PURPOSE: To study the drug retention rate (DRR), causes, and predictors of discontinuation of adalimumab (ADA) in a real-world uveitis setting. DESIGN: Multicentric, nationwide, registry-based, ambispective, observational study. PARTICIPANTS: Patients treated with ADA for noninfectious uveitis (NIU) in the Biotherapies for Uveitis (BioÚvea) Spanish registry from November 2016 to November 2017. METHODS: Demographics, clinical data, timing, and reasons for discontinuation, if occurred, were recorded. The DRR and drug retention time (DRT) were estimated using the Kaplan-Meier method. Median follow-up was analyzed by reverse Kaplan-Meier. Log-rank test was used for comparisons. Cox proportional-hazards model (PHM) and propensity score matching were used to identify predictors for discontinuation due to inefficacy and adverse events. MAIN OUTCOME MEASURES: Drug retention rate and DRT. RESULTS: A total of 392 patients were analyzed, including 218 women. Median age was 39 (interquartile range, 25) years. Nonanterior uveitis was recorded in 242 patients. Median follow-up was 49.07 (0.97-131.67) months, median DRT (survival) was 69.3 months, and 14 patients were lost to follow-up. The DRR at 6, 12, 24, and 60 months was 92.97%, 87.68%, 76.31%, and 54.28%, respectively. Adalimumab was discontinued in 151 patients. Discontinuation was due to lack or loss of efficacy in 74 patients, adverse event in 34 patients, and sustained quiescence in 25 patients. Recorded adverse events included infections in 10 patients and malignant neoplasms in 3 patients. Concurrent classic immunomodulatory therapy (IMT) was given to 251 patients. We did not find DRT differences regarding the use of concurrent IMT. Adalimumab was prescribed as a second or greater biotherapy line in 76 patients who showed shorter DRT (P = 0.038). Starting ADA in nonbiotherapy-naive patients was a predictor for "discontinuation due to inefficacy," whereas undifferentiated uveitis was a predictor for "discontinuation due to adverse event." Drug retention time was significantly shorter when spared or intensified, mainly due to discontinuation after sustained quiescence. CONCLUSIONS: Drug retention rate of ADA in uveitis at 60 months was 54.28%, with a good safety profile. The use of concurrent IMT did not show a significant influence on DRT. The use of ADA as a second or further biotherapy could be predictive for discontinuation due to inefficacy. Undifferentiated uveitis may be prone to premature discontinuation of ADA due to adverse events.

Anti-interleukin 6 receptor tocilizumab in refractory uveitis associated with Behçet's disease: multicentre retrospective study.

Objective: To assess the efficacy of tocilizumab (TCZ) in refractory uveitis of Behçet's disease (BD). Methods: Multicentre study of patients with BD-associated uveitis. Patients were refractory to conventional and biologic immunosuppressive drugs. The main outcome measures were intraocular inflammation, macular thickness, visual acuity and corticosteroid-sparing effects. Results: We studied 11 patients (7 men) (20 affected eyes); median age 35 years. Uveitis was bilateral in nine patients. The patterns of ocular involvement were panuveitis (n = 8, with retinal vasculitis in 4), anterior uveitis (n = 2) and posterior uveitis (n = 1). Cystoid macular oedema was present in seven patients. The clinical course was recurrent (n = 7) or chronic (n = 4). Before TCZ, patients had received systemic corticosteroids, conventional immunosuppressants and the following biologic agents: adalimumab (n = 8), infliximab (n = 4), canakimumab (n = 1), golimumab (n = 3), etanercept (n = 1). TCZ was used as monotherapy or combined with conventional immunosuppressants at 8 mg/kg/i.v./4 weeks (n = 10) or 162 mg/s.c./week (n = 1). At TCZ onset the following extraocular manifestations were present: oral and/or genital ulcers (n = 7), arthritis (n = 4), folliculitis/pseudofolliculitis (n = 4), erythema nodosum (n = 2), livedo reticularis (n = 1) and neurological involvement (n = 2). TCZ yielded rapid and maintained improvement in all ocular parameters of the patients, with complete remission in eight of them. However, this was not the case for the extraocular manifestations, since TCZ was only effective in three of them. After a mean (s.d.) follow-up of 9.5 (8.05) months, TCZ was withdrawn in two cases, due to a severe infusion reaction and arthritis impairment, respectively. Conclusion: TCZ could be a therapeutic option in patients with BD and refractory uveitis.

The effect of biologic therapy different from infliximab or adalimumab in patients with refractory uveitis due to Behçet's disease: results of a multicentre open-label study.

OBJECTIVES: To assess the efficacy of other biologic therapies, different from infliximab (IFX) and adalimumab (ADA), in patients with Behçet's disease uveitis (BU). METHODS: Multicenter study of 124 patients with BU refractory to at least one standard immunosuppressive agent that required IFX or ADA therapy. Patients who had to be switched to another biologic agent due to inefficacy or intolerance to IFX or ADA or patient's decision were assessed. The main outcome measures were the degree of anterior and posterior chamber inflammation and macular thickness. RESULTS: Seven (5.6%) of 124 cases (4 women/3 men; mean age, 43 (range 28- 67) years; 12 affected eyes) were studied. Five of them had been initially treated with ADA and 2 with IFX. The other biologic agents used were golimumab (n=4), tocilizumab (n=2) and rituximab (n=1). The ocular pattern was panuveitis (n=4) or posterior uveitis (n=3). Uveitis was bilateral in 5 patients (71.4%). At baseline, anterior chamber and vitreous inflammation were present in 6 (50%) and 7 (58.3%) of the eyes. All the patients (12 eyes) had macular thickening (OCT>250µm) and 4 of them (7 eyes), cystoid macular edema (OCT>300 µm). Besides reduction anterior chamber and vitreous inflammation, we observed a reduction of OCT values, from 330.4±58.5 µm at the onset of the biological agent to 273±50 µm at month 12 (p=0.06). Six patients achieved a complete remission of uveitis. CONCLUSIONS: The vast majority of patients with BU refractory to standard immunosuppressive drugs are successfully controlled with ADA and/or IFX. Other biologic agents appear to be also useful.

Central serous chorioretinopathy and systemic corticosteroids in rheumatic diseases: report of three cases.

BACKGROUND: Central serous chorioretinopathy is a disorder often related to systemic corticosteroids, drugs commonly used in rheumatologists' clinical practice. Central serous chorioretinopathy prognosis is generally good but in some cases, it may lead to substantial loss of vision resulting in an important functional limitation for patients. It is very important to distinguish this pathology from other diseases involving retinal detachment. When central serous chorioretinopathy and uveitis coexist, it is mandatory to distinguish serous retinal detachment from a uveitis worsening, as the respective treatments can be radically different. CASE PRESENTATION: We describe three cases of central serous chorioretinopathy in patients taking systemic corticosteroids due to rheumatological diseases (ankylosing spondylitis, systemic lupus erythematosus and Behçet's disease). They were diagnosed and managed at our Multidisciplinary (Rheumatology-Ophthalmology) Uveitis Clinic. All three cases improved after corticosteroids dose tapering. CONCLUSION: Central serous chorioretinopathy must be kept in mind by rheumatologists as it is related to systemic corticosteroids.

Anti-TNF-α therapy in patients with refractory uveitis due to Behçet's disease: a 1-year follow-up study of 124 patients.

OBJECTIVE: The aim of this study was to assess the efficacy of anti-TNF-α therapy in refractory uveitis due to Behçet's disease (BD). METHODS: We performed a multicentre study of 124 patients with BD uveitis refractory to conventional treatment including high-dose corticosteroids and at least one standard immunosuppressive agent. Patients were treated for at least 12 months with infliximab (IFX) (3-5 mg/kg at 0, 2 and 6 weeks and then every 4-8 weeks) or adalimumab (ADA) (usually 40 mg every 2 weeks). The main outcome measures were degree of anterior and posterior chamber inflammation, visual acuity, macular thickness and immunosuppression load. RESULTS: Sixty-eight men and 56 women (221 affected eyes) were studied. The mean age was 38.6 years (s.d. 10.4). HLA-B51 was positive in 66.1% of patients and uveitis was bilateral in 78.2%. IFX was the first biologic agent in 77 cases (62%) and ADA was first in 47 (38%). In most cases anti-TNF-α drugs were used in combination with conventional immunosuppressive drugs. At the onset of anti-TNF-α therapy, anterior chamber and vitreous inflammation was observed in 57% and 64.4% of patients, respectively. In both conditions the damage decreased significantly after 1 year. At baseline, 50 patients (80 eyes) had macular thickening [optical coherence tomography (OCT) >250 µm] and 35 (49 eyes) had cystoid macular oedema (OCT>300 µm) that improved from 420 µm (s.d. 119.5) at baseline to 271 µm (s.d. 45.6) at month 12 (P < 0.01). The best-corrected visual acuity and the suppression load also showed significant improvement. After 1 year of follow-up, 67.7% of patients were inactive. Biologic therapy was well tolerated in most cases. CONCLUSION: Anti-TNF-α therapy is effective and relatively safe in refractory BD uveitis.

VEXAS syndrome: A 2-case series report.

VEXAS syndrome is a rare entity secondary to UBA1 gene mutations, located on the X chromosome. This mutation generates, as a consequence, a characteristic vacuolation on haematopoietic stem-cells. It is characterized by multiple autoinflammatory and haematologic manifestations, which respond and end up being dependent on corticosteroid treatment. In this publication we present a 2-case series diagnosed at our hospital and make a brief literature review of the published evidence so far.

Ischiofemoral impingement syndrome: A five-case series report.

Gluteal pain is a frequent cause of medical attention in the daily clinical practice. It can be caused by multiple pathologies, being ischiofemoral impingement syndrome among those included in its differential diagnosis. Encompassed within the deep gluteal syndromes, this entity occurs as a consequence of the entrapment of the neuromuscular structures between the lesser femoral trochanter and the ischial tuberosity, causing pain in the root of the lower limb, with irradiation towards the thigh or the gluteal region and poor tolerance to deambulation and sedestation. The magnetic resonance imaging of the hip is fundamental for its diagnosis, and its management consists on medical treatment at onset. Despite not being a frequent diagnosis in the clinical practice in Rheumatology, keeping it in mind helps improving its prognosis by establishing an early and adequate treatment.

Validation of UVEDAI: An Index for Evaluating the Level of Inflammatory Activity in Uveitis.

INTRODUCTION: Uveitis is the inflammation of the middle layer of the eye, the uvea, and is a major cause of blindness. None of the instruments used in clinical practice are, in themselves, sufficient to evaluate the course of uveitis. Therefore, it is necessary to develop instruments enabling standardized measurement of inflammatory activity. We developed a composite disease activity index for patients with uveitis known as UVEDAI, which considers the overall activity of the eye. The objective of this study was to validate the composite index of ocular inflammation, UVEDAI. METHODS: A multicenter cross-sectional study involving eight Spanish tertiary hospitals. Sixty-two patients aged ≥ 18 years with acute uveitis were recruited. Participants gave informed consent before participating in the study. A full ophthalmological examination was performed by two ophthalmologists to determine inflammatory activity: one used the UVEDAI score and the other used clinical judgment. The ophthalmologists did not share their findings with each other to avoid introducing bias into the analysis. Construct validity was established by means of factor analysis. The criterion validity of the index was determined using an ordinal multivariate regression model, in which the dependent variable was the degree of uveal inflammation (mild, moderate, or high/severe). Cut-off points were determined for the UVEDAI and for the receiver operating characteristic (ROC) curves. RESULTS: Sixty-two patients were included. Total variance with the three components accounted for 80.32% of the construct validity. Each of the three components identified one type of eye involvement. The discriminatory capacity of UVEDAI was 0.867 (95% CI 0.778; 0.955 p < 0.001) for mild versus moderate-high and 0.946 (95% CI 0.879; 1.000 p < 0.001) for high versus mild-moderate. CONCLUSIONS: The variables included in UVEDAI enable ocular inflammatory activity to be described with a high degree of accuracy. The index may be used to evaluate and classify this activity with considerable discriminatory power.

Long-term Follow-up and Optimization of Infliximab in Refractory Uveitis Due to Behçet Disease: National Study of 103 White Patients.

OBJECTIVE: In a large series of White patients with refractory uveitis due to Behçet disease (BD) being treated with infliximab (IFX), we assessed (1) long-term efficacy and safety of IFX, and (2) IFX optimization when ocular remission was achieved. METHODS: Our multicenter study of IFX-treated patients with BD uveitis refractory to conventional immunosuppressant agents treated 103 patients/185 affected eyes with IFX as first biologic therapy in the following intervals: 3-5 mg/kg intravenous at 0, 2, 6, and then every 4-8 weeks. The main outcome variables were analyzed at baseline, first week, first month, sixth month, first year, and second year of IFX therapy. After remission, based on a shared decision between patient and clinician, IFX optimization was performed. Efficacy, safety, and cost of IFX therapy were evaluated. RESULTS: In the whole series (n = 103), main outcome variables showed a rapid and maintained improvement, reaching remission in 78 patients after a mean IFX duration of 31.5 months. Serious adverse events were observed in 9 patients: infusion reactions (n = 4), tuberculosis (n = 1), Mycobacterium avium pneumonia (n = 1), severe oral ulcers (n = 1), palmoplantar psoriasis (n = 1), and colon carcinoma (n = 1). In the optimization subanalysis, the comparative study between optimized and nonoptimized groups showed (1) no differences in clinical characteristics at baseline, (2) similar maintained improvement in most ocular outcomes, (3) lower severe adverse events, and (4) lower mean IFX costs in the optimized group (€4826.52 vs €9854.13 per patient/yr). CONCLUSION: IFX seems to be effective and relatively safe in White patients with refractory BD uveitis. IFX optimization is effective, safe, and cost-effective.

Ophthalmic and Neuro-ophthalmic Manifestations of Coronavirus Disease 2019 (COVID-19).

PURPOSE: To describe a case of inflammatory chorioretinopathy and Adie's syndrome possibly associated with COVID-19. METHODS: Observational case report. RESULTS: A 51-year-old woman developed fever, cough, and headache followed by retro-ocular pain and reading impairment. She tested positive for SARS-COV-2 infection by qualitative real-time reverse-transcriptase-polymerase-chain-reaction. The slit-lamp and funduscopic exam revealed abnormal pupillary response and yellowish creamy deep chorioretinal lesions, which were not present in previous examinations. Instillation of pilocarpine demonstrated denervation supersensitivity, and it was suggestive of bilateral Adie tonic pupil. A comprehensive work-up ruled out other systemic, autoimmune, or infectious diseases. CONCLUSIONS: This case illustrates the possible association between multifocal chorioretinitis and Adie's syndrome, and the SARS-COV-2 infection in humans. Further investigation of virus infectivity specifically within ocular tissues has to be conducted.

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.

Anti-IL6-Receptor Tocilizumab in Refractory and Noninfectious Uveitic Cystoid Macular Edema: Multicenter Study of 25 Patients.

PURPOSE: Cystoid macular edema (CME) is a leading cause of blindness. This study assessed the efficacy and safety of tocilizumab (TCZ) in refractory CME. DESIGN: Retrospective case series. METHODS: Patients with CME secondary to noninfectious uveitis who had inadequate response to corticosteroids and at least 1 conventional immunosuppressive drug, and in most cases to other biological agents, were studied. CME was defined as central retinal thickness greater than 300 µm. The primary outcome measure was macular thickness. Intraocular inflammation, best-corrected visual acuity (BCVA), and corticosteroid-sparing effect were also analyzed. RESULTS: A total of 25 patients (mean ± standard deviation age 33.6 ± 18.9 years; 17 women) with CME were assessed. Underlying diseases associated with uveitis-related CME are juvenile idiopathic arthritis (n = 9), Behçet disease (n = 7), birdshot retinochoroidopathy (n = 4), idiopathic (n = 4), and sarcoidosis (n = 1). The ocular patterns were panuveitis (n = 9), anterior uveitis (n = 7), posterior uveitis (n = 5), and intermediate uveitis (n = 4). Most patients had CME in both eyes (n = 24). TCZ was used in monotherapy (n = 11) or combined with conventional immunosuppressive drugs. Regardless of the underlying disease, compared to baseline, a statistically significant improvement in macular thickness (415.7 ± 177.2 vs 259.1 ± 499.5 µm; P = .00009) and BCVA (0.39 ± 0.31 vs 0.54 ± 0.33; P = .0002) was obtained, allowing us to reduce the daily dose of prednisone (15.9 ± 13.6 mg/day vs 3.1 ± 2.3 mg/day; P = .002) after 12 months of therapy. Remission was achieved in 14 patients. Only minor side effects were observed after a mean follow-up of 12.7 ± 8.34 months. CONCLUSION: Macular thickness is reduced following administration of TCZ in refractory uveitis-related CME.

Comparative Study of Infliximab Versus Adalimumab in Refractory Uveitis due to Behçet's Disease: National Multicenter Study of 177 Cases.

OBJECTIVE: To compare the efficacy of infliximab (IFX) versus adalimumab (ADA) as a first-line biologic drug over 1 year of treatment in a large series of patients with refractory uveitis due to Behçet's disease (BD). METHODS: We conducted an open-label multicenter study of IFX versus ADA for BD-related uveitis refractory to conventional nonbiologic treatment. IFX or ADA was chosen as the first-line biologic agent based on physician and patient agreement. Patients received 3-5 mg/kg intravenous IFX at 0, 2, and 6 weeks and every 4-8 weeks thereafter, or 40 mg subcutaneous ADA every other week without a loading dose. Ocular parameters were compared between the 2 groups. RESULTS: The study included 177 patients (316 affected eyes), of whom 103 received IFX and 74 received ADA. There were no significant baseline differences between treatment groups in main demographic features, previous therapy, or ocular sign severity. After 1 year of therapy, we observed an improvement in all ocular parameters in both groups. However, patients receiving ADA had significantly better outcomes in some parameters, including improvement in anterior chamber inflammation (92.31% versus 78.18% for IFX; P = 0.06), improvement in vitritis (93.33% versus 78.95% for IFX; P = 0.04), and best-corrected visual acuity (mean ± SD 0.81 ± 0.26 versus 0.67 ± 0.34 for IFX; P = 0.001). A nonsignificant difference was seen for macular thickness (mean ± SD 250.62 ± 36.85 for ADA versus 264.89 ± 59.74 for IFX; P = 0.15), and improvement in retinal vasculitis was similar between the 2 groups (95% for ADA versus 97% for IFX; P = 0.28). The drug retention rate was higher in the ADA group (95.24% versus 84.95% for IFX; P = 0.042). CONCLUSION: Although both IFX and ADA are efficacious in refractory BD-related uveitis, ADA appears to be associated with better outcomes than IFX after 1 year of follow-up.

Clinical characteristics, treatment and ocular complications of HLA-B27-related anterior uveitis and HLA-B27-non related anterior uveitis. / Características clínicas, tratamiento y complicaciones oculares de uveítis anterior asociada y no asociada a HLA-B27.

INTRODUCTION: Anterior uveitis is the most common type of intraocular inflammation. Those associated to HLA-B27 represent 18 to 32% of all anterior uveitis cases. OBJECTIVES: To describe clinical characteristics, systemic treatment need, and frequency and type of ocular complications in a cohort of patients diagnosed with HLAB27-related anterior uveitis and in a cohort of patients diagnosed with HLA-B27 non-related anterior uveitis. To establish if statistically significant differences between both cohorts exist. MATERIAL AND METHODS: We performed a retrospective cohort study including patients with non infectious anterior uveitis related and not related to the antigen HLA-B27. RESULTS: 162 patients were included, 58 diagnosed with HLA-B27-related anterior uveitis (cohort HLA-B27+1) and 104 diagnosed with HLA-B27- non related anterior uveitis (cohort HLA-B27-). No statistically significant differences were found regarding clinical characteristics between both cohorts with the exception of a higher frequency of recurrences in cohort HLA-B27+ and a higher frequency of chronic uveitis in cohort HLA-B27-. No differences were found regarding systemic treatment use nor development of ocular complications. DISCUSSION: In contrast to previous studies, we neither found higher male gender predominance in the cohort of patients with HLA-B27-related anterior uveitis, Nor did we find differences regarding average age, laterality, development of complications nor use of systemic corticosteroids.