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To characterize the demographic, genetic, clinical, and serological features of patients with anti-3‑hydroxy-3-methylglutaryl-CoA reductase (HMGCR) immune-mediated necrotizing myopathy (IMNM) in a region of northern Spain.Study of all patients diagnosed with anti-HMGCR IMNM during a 5-year period at a reference hospital in northern Spain. Besides clinical and laboratory data, we analyzed the genetic influence of HLA genes and the rs4149056 (c.521TC) single nucleotide polymorphism (SNP) in the SLCO1B1 gene.8 patients (5 women, 3 men) with a mean ± SD age of 64.9 ± 7.3 years, fulfilled the criteria for anti-HMGCR IMNM. The incidence rate was 0.6 per 100.000 person-years and the prevalence 3 per 100.000 population. All patients had been exposed to statins. All of them had predominant lower limb proximal and symmetric muscle weakness that was severe in 2 and had elevated serum CK levels with a median [IQR] of 4488 [2538-9194] IU/L. Serum 25‑hydroxy vitamin D levels were decreased in all patients in whom it was determined. The 3 patients with a previous diagnosis of hypothyroidism had abnormal levels of TSH at the time of diagnosis. All patients experienced improvement with different schemes of immunosuppressive therapy. Noteworthy, 7 of 8 patients carried the HLA-DRB1*11 allele. The frequency of the rs4149056 C allele in the SLCO1B1 gene (12.5%) was similar to that of the general population.In northern Spain, anti-HMGCR IMNM preferentially affects people over 50 years of age who are carriers of the HLA-DRB1*11 allele and take statins. Both low vitamin D levels and hypothyroidism may play a potential predisposing role in the development of this disease.

Background Glucocorticoids have been suggested as a potential therapy in refractory obstetric antiphospholipid syndrome (oAPS). Our aims were to describe a cohort of patients with oAPS treated with low-dose glucocorticoids and to perform a systematic review and meta-analysis evaluating the effects of additional glucocorticoids on the pregnancy outcomes in oAPS patients. Methods Retrospective study that included 11 women diagnosed with primary antiphospholipid syndrome. The meta-analysis was conducted by fitting random effects models and was checked for heterogeneity. Results All women had suffered from early pregnancy losses and two also had a history of fetal deaths. We studied 47 pregnancies that resulted in 32 abortions (68.1%) and 3 fetal deaths (6.4%). Twenty-six pregnancies were under treatment, mainly LDA and LMWH. Low-dose glucocorticoids were indicated in 13 pregnancies (always in association with LDA and LMWH). There was a decrease in pregnancy loss in those patients treated with LDA and LMWH. Treatment with glucocorticoids significantly increased the rate of successful pregnancy (38.5% abortions in treated vs 85.3% abortions in non-treated pregnancies; p=0.003). After multivariate GEE analysis, only glucocorticoids remained inversely associated with pregnancy loss (OR=0.157, (CI 0.025–0.968, p=0.046)). The meta-analysis showed that glucocorticoids tended to improve the frequency of successful pregnancy (OR= 0.509 (0.252–1.028), p=0.06). Three cases of gestational diabetes and one of preeclampsia were observed in our cohort. The meta-analysis, which mostly included studies using high-dose steroids, showed that glucocorticoids increased not only the frequency of preeclampsia and gestational diabetes, but also the rate of pre-term birth. Conclusions The efficacy of low-dose glucocorticoids in addition to the standard therapy in patients with refractory oAPS should be confirmed in well-designed clinical trials. However, high doses of steroids significantly increase the frequency of maternal and fetal morbidities, making their use strongly inadvisable.

Objective To analyse a cohort of pregnant patients with systemic lupus erythematosus and compare the outcomes of both the disease and pregnancy with the results of previous studies conducted in the same geographical area. Patients and methods Retrospective cohort study of 37 women with systemic lupus erythematosus (64 pregnancies) followed in a multidisciplinary unit. Comparative study with similar Spanish studies identified after literature search. Results Our cohort was characterized by an older age and by the presence of non-Caucasian patients. Although we found no clinical differences, from the serological point of view our cohort presented a higher frequency of antiphospholipid antibodies. Patients included in this study were treated more frequently with antimalarials and low-dose aspirin. Systemic lupus erythematosus flare frequency was very similar between the different studies, and we did not identify clear predictors for them. Although the rate of live births was similar among studies, the obstetric outcome of our series was better with a very low rate of preeclampsia, preterm birth and low birth weight newborn. The only predictor of adverse obstetric event was age. Conclusions Although changes in the therapeutic attitude and planning of pregnancy in recent years have not had a direct impact on the rate of systemic lupus erythematosus flares during pregnancy, they have meant an improvement in the obstetric results. The introduction of new variables independent of the disease such as age at conception, socio-cultural origin, or the availability of multidisciplinary units should be considered in the results of future studies.

Resumen Objetivo Analizar una cohorte de pacientes embarazadas con lupus eritematoso sistemico y comparar los desenlaces tanto de la enfermedad como del embarazo con los resultados de estudios previos realizados en la misma area geografica. Pacientes y metodos Estudio de cohortes retrospectivo de 37 mujeres con lupus eritematoso sistemico (64 embarazos) seguidas en una consulta multidisciplinar. Estudio comparativo con los estudios espanoles similares identificados tras revision bibliografica. Resultados Nuestra cohorte se caracterizo por una edad mas elevada y por la presencia de pacientes de origen no caucasico. Aunque no encontramos diferencias clinicas relevantes, serologicamente nuestra cohorte presento una mayor frecuencia de anticuerpos antifosfolipido. Las pacientes incluidas en este estudio fueron tratadas mas frecuentemente con antipaludicos y aspirina. La frecuencia de brotes fue muy similar entre los distintos estudios, y no identificamos predictores claros para los mismos. Aunque la tasa de nacidos vivos fue similar, el desenlace obstetrico de nuestra serie fue mejor, con una baja tasa de preeclampsia, parto pretermino y recien nacido de bajo peso. El unico predictor de acontecimiento obstetrico adverso fue la edad. Conclusiones Si bien los cambios en la actitud terapeutica y la planificacion del embarazo no han tenido un impacto directo sobre la tasa de reactivacion del lupus eritematoso sistemico durante el embarazo, si que han supuesto una mejoria en los resultados obstetricos. La introduccion de nuevas variables independientes de la enfermedad como la edad en la concepcion, la procedencia sociocultural, o la disponibilidad de unidades multidisciplinares deberan ser consideradas en los resultados de proximos estudios.

The adjusted Global Antiphospholipid Syndrome (APS) Score (aGAPSS) is a tool proposed to quantify the risk for antiphospholipid antibody (aPL)-related clinical manifestations. However, aGAPSS has been validated mainly for thrombotic events and studies on APS-related obstetric manifestations are scarce. Furthermore, the majority of them included patients with positive aPL and different autoimmune diseases. Here, we assess the utility of aGAPSS to predict the response to treatment in aPL carriers without other autoimmune disorders. One-hundred and thirty-seven women with aPL ever pregnant were included. Sixty-five meet the APS classification criteria, 61 had APS-related obstetric manifestations, and 11 were asymptomatic carriers. The patients’ aGAPSS risk was grouped as low (N = 73), medium (6–11, N = 40), and high risk (≥ 12, N = 24). Since vascular risk factors included in the aGAPSS were infrequent in this population (

The natural history of antiphospholipid antibodies (aPL) carriers is not well-established. The objectives of the present study were (a) to study the probability of developing clinical criteria of antiphospholipid syndrome (APS), (b) to identify potential risk factors for developing thrombosis and/or obstetric complications, (c) to study the association between the antibody profile and development of APS, and (d) to determine the efficacy of primary prophylaxis. We retrospectively analyzed 138 subjects with positive aPL who did not fulfill clinical criteria for APS. The mean follow-up time was 138 ± 63.0 months. Thirteen patients (9.4%) developed thrombosis after an average period of 73.0 ± 48.0 months. Independent risk factors for thrombosis were smoking, hypertension, thrombocytopenia, and triple aPL positivity. Low-dose acetyl salicylic acid did not prevent thrombotic events. A total of 28 obstetric complications were detected in 92 pregnancies. During the follow-up, only two women developed obstetric APS. Prophylactic treatment in pregnant women was associated with a better outcome in the prevention of early abortions. The thrombosis rate in patients with positive aPL who do not meet diagnostic criteria for APS is 0.82/100 patients-year. Smoking, hypertension, thrombocytopenia, and the aPL profile are independent risk factors for the development of thrombosis in aPL carriers. Although the incidence of obstetric complications in this population is high (31.6%), only a few of them meet APS criteria. In these women, prophylactic treatment might be effective in preventing early abortions.

The simplicity and low cost of rapid point-of-care tests greatly facilitate large-scale population testing, which can contribute to controlling the spread of the COVID-19 virus. We evaluated the applicability of a self-testing strategy for SARS-CoV2 in a population-based, cross-sectional study in Cantabria, Spain, between April and May 2020. For the self-testing strategy, participants received the necessary material for the self-collection of blood and performance of a rapid antibody test using lateral flow immunoassay at home without the supervision of healthcare personnel. A total of 1,022 participants were enrolled. Most participants correctly performed the COVID-19 self-test the first time (91.3% [95% CI 89.4-92.9]). Only a minority of the participants (0.7%) needed the help of healthcare personnel, while 6.9% required a second kit delivery, for a total valid test result in 96.9% of the participants. Incorrect use of the self-test was not associated with the educational level, age over 65, or housing area. Prevalence of IgG antibodies against SARS-CoV2 for subjects with a valid rapid test result was 3.1% (95% CI 2.2-4.4), similar to the seroprevalence result obtained using a conventional approach carried out by healthcare professionals. In conclusion, COVID-19 self-testing should be considered as a screening tool. Acknowledgements: We would like to acknowledge the participation of all the individuals in this study. JVL acknowledges support to ISGlobal from the Spanish Ministry of Science, Innovation and Universities through the “Centro de Excelencia Severo Ochoa 2019-2023” Programme (CEX2018-000806-S), and from the Government of Catalonia through the CERCA Programme.

Objective: In order to agree on the fundamental aspects related to the management of pregnancy in patients with systemic lupus erythematosus (SLE) and antiphospholipid syndrome (APS), the Spanish Societies of Gynaecology and Obstetrics, Internal Medicine and Rheumatology set up a working group for the preparation of three consensus documents. Methods: Each of the Scientific Societies involved proposed five representatives based on their experience in the field of pregnancy control in patients with autoimmune diseases. The recommendations were developed following the Delphi methodology. Results: This second document contains the recommendations regarding the management of pregnancy in women with SLE and APS, including complications such as lupus activity, congenital heart block, thrombotic and obstetric manifestations of APS and placental vascular disease. Conclusions: These multidisciplinary recommendations are considered decision-making tools for clinicians involved in the care of patients with SLE/APS during pregnancy. Objetivo: Las sociedades españolas de ginecología y obstetricia, de medicina interna y de reumatología han constituido un grupo de trabajo paritario para la elaboración de 3 documentos de consenso sobre el control del embarazo en mujeres con lupus eritematoso sistémico (LES) y síndrome antifosfolípido (SAF).Métodos: Cada una de las sociedades científicas implicadas propuso 5 representantes en base a su experiencia en el área del control del embarazo en pacientes con enfermedades autoinmunes. Las recomendaciones se elaboraron siguiendo la metodología Delphi. Resultados: En este segundo documento se incluyen las recomendaciones que abordan el manejo del embarazo normal y sus complicaciones en mujeres con LES/SAF. Se presentan las recomendaciones relacionadas con el seguimiento del embarazo, la actividad lúpica, el bloqueo cardíaco congénito, las manifestaciones trombóticas y obstétricas del SAF y los defectos de placentación. Conclusiones: Estas recomendaciones multidisciplinares se consideran herramientas en la toma de decisiones para los clínicos involucrados en la asistencia a pacientes con LES/SAF durante el embarazo.

Objective Pregnancy and puerperium are considered a risk situation in women with systemic lupus erythematosus (SLE) and antiphospholipid syndrome (APS). Therefore, specialised assessment is essential both preconception and during pregnancy and the puerperium. Likewise, it is very important that different specialists in autoimmune diseases and high-risk pregnancies participate in the follow-up of these patients in a coordinated manner. The Spanish Society of Gynaecology and Obstetrics, the Spanish Society of Internal Medicine, and the Spanish Society of Rheumatology have set up a working group for the preparation of three consensus documents. Methods The stages of the work were: distribution of work in three groups corresponding to the three periods related to pregnancy (preconception, during pregnancy and childbirth and puerperium), identification of key areas, exhaustive review of the literature and formulation of recommendations. Results 161 recommendations were prepared that address the three periods indicated. This first document includes the 48 recommendations that address aspects related to infertility, the need for and treatments for gonadal preservation and preconception assessment. Conclusions These multidisciplinary recommendations are considered decision-making tools for clinicians involved in the care of patients with SLE/APS during pregnancy.

Background The role of vitamin D status in COVID-19 patients is a matter of debate. Objectives To assess serum 25-hydroxyvitamin D (25OHD) levels in hospitalized patients with COVID-19 and to analyze the possible influence of vitamin D status on disease severity. Methods Retrospective case–control study of 216 COVID-19 patients and 197 population-based controls. Serum 25OHD levels were measured in both groups. The association of serum 25OHD levels with COVID-19 severity (admission to the intensive care unit, requirements for mechanical ventilation, or mortality) was also evaluated. Results Of the 216 patients, 19 were on vitamin D supplements and were analyzed separately. In COVID-19 patients, mean ± standard deviation 25OHD levels were 13.8 ± 7.2 ng/mL, compared with 20.9 ± 7.4 ng/mL in controls (P Conclusions 25OHD levels are lower in hospitalized COVID-19 patients than in population-based controls and these patients had a higher prevalence of deficiency. We did not find any relationship between vitamin D concentrations or vitamin deficiency and the severity of the disease.

A significant proportion of patients with retinal vein occlusion (RVO) are antiphospholipid antibodies (aPL) carriers. Relapsing disease occurs in nearly 10 % of cases and the role of aPL has not been established. The adjusted global antiphospholipid syndrome score (aGAPSS) was developed to assess the risk of clinical events in aPL carriers and its role in the management of RVO patients is unknown.To analyze the values of aGAPSS in a large cohort of patients with RVO and population-based controls, and to assess its usefulness to predict RVO relapses.Case-control study of RVO patients and population-based controls of similar age and sex. We have assessed and compared the aPL profile and the aGAPSS score in patients with and without relapsing disease and controls.Four-hundred and seventy-two RVO patients and 346 controls were included. Fifty-seven RVO patients had antiphospholipid syndrome (RVO-APS). Of them, 75.4 % had a high-risk profile compared to 3 % in controls (p = 0.0001). The median aGAPSS values were 8 [7-13], 3 [1-4], and 3 [0-4], in RVO-APS, RVO no-APS, and controls. Nineteen patients had had a recurrence of RVO before inclusion and 8 during the follow-up. APS was more prevalent in relapsing patients. In the adjusted multivariable regression model, the best predictor for RVO recurrence during the follow-up was an aGAPSS score ≥6 (OR 5.5, CI95% 1.3-23.7; p = 0.023).In patients with RVO, once the control of vascular risk factors has been optimized, the aGAPSS might help to identify those at risk of relapsing disease.

Resumen Objetivo El embarazo y el puerperio se consideran una situacion de riesgo en mujeres con lupus eritematoso sistemico (LES) y sindrome antifosfolipido (SAF). Es esencial que especialistas en enfermedades autoinmunes y en embarazo de alto riesgo intervengan en su seguimiento de forma coordinada. La Sociedad Espanola de Ginecologia y Obstetricia, la Sociedad Espanola de Medicina Interna, y la Sociedad Espanola de Reumatologia han constituido un grupo de trabajo paritario para la elaboracion de 3 documentos de consenso. Metodos Las fases del trabajo fueron: distribucion del trabajo en grupos correspondientes a los 3 periodos relacionados con la gestacion, identificacion de areas clave, revision de la literatura y formulacion de recomendaciones. Resultados En este primer documento se incluyen las primeras 48 recomendaciones que tratan aspectos relacionados con la infertilidad, la necesidad y los tratamientos de preservacion gonadal y la valoracion preconcepcional. Conclusiones Estas recomendaciones multidisciplinares se consideran herramientas en la toma de decisiones para los clinicos involucrados en la asistencia a pacientes con LES/SAF durante el embarazo.

Objetivo Las Sociedades Españolas de Ginecología y Obstetricia, de Medicina Interna y de Reumatología han constituido un grupo de trabajo paritario para la elaboración de tres documentos de consenso sobre el control del embarazo en mujeres con lupus eritematoso sistémico y síndrome antifosfolípido. Métodos Cada una de las sociedades científicas implicadas propuso cinco representantes en base a su experiencia en el área del control del embarazo en pacientes con enfermedades autoinmunes. Las recomendaciones se elaboraron siguiendo la metodología Delphi. Resultados En este tercer documento se incluyen las recomendaciones que abordan el manejo del parto, puerperio y lactancia, incluyendo el manejo de los diferentes fármacos en estos periodos. Además se incluye una sección sobre los cuidados iniciales del recién nacido y sobre anticoncepción. Conclusiones Estas recomendaciones multidisciplinares se consideran herramientas en la toma de decisiones para los clínicos involucrados en la asistencia a pacientes con lupus eritematoso sistémico/síndrome antifosfolípido durante el embarazo. Objective: In order to agree on the fundamental aspects related to the management of pregnancy in patients with systemic lupus erythematosus and antiphospholipid syndrome, the Spanish Societies of Gynaecology and Obstetrics, Internal Medicine and Rheumatology have set up a working group for the preparation of three consensus documents. Methods: Each of the Scientific Societies involved proposed five representatives based on their experience in the field of pregnancy control in patients with autoimmune diseases. The recommendations were developed following the Delphi methodology. Results: This third document contains the recommendations regarding the management of delivery, puerperium and lactation, including medication use during these periods and the care of the newborn. In addition, a section on contraception is included. Conclusions: These multidisciplinary recommendations are considered decision-making tools for clinicians involved in the care of patients with systemic lupus erythematosus/antiphospholipid syndrome during pregnancy.

Objetivo Las Sociedades Españolas de Ginecología y Obstetricia, de Medicina Interna y de Reumatología han constituido un grupo de trabajo paritario para la elaboración de tres documentos de consenso sobre el control del embarazo en mujeres con lupus eritematoso sistémico y síndrome antifosfolípido. Métodos Cada una de las sociedades científicas implicadas propuso cinco representantes en base a su experiencia en el área del control del embarazo en pacientes con enfermedades autoinmunes. Las recomendaciones se elaboraron siguiendo la metodología Delphi. Resultados En este tercer documento se incluyen las recomendaciones que abordan el manejo del parto, puerperio y lactancia, incluyendo el manejo de los diferentes fármacos en estos periodos. Además se incluye una sección sobre los cuidados iniciales del recién nacido y sobre anticoncepción. Conclusiones Estas recomendaciones multidisciplinares se consideran herramientas en la toma de decisiones para los clínicos involucrados en la asistencia a pacientes con lupus eritematoso sistémico/síndrome antifosfolípido durante el embarazo. Objective: In order to agree on the fundamental aspects related to the management of pregnancy in patients with systemic lupus erythematosus and antiphospholipid syndrome, the Spanish Societies of Gynaecology and Obstetrics, Internal Medicine and Rheumatology have set up a working group for the preparation of three consensus documents. Methods: Each of the Scientific Societies involved proposed five representatives based on their experience in the field of pregnancy control in patients with autoimmune diseases. The recommendations were developed following the Delphi methodology. Results: This third document contains the recommendations regarding the management of delivery, puerperium and lactation, including medication use during these periods and the care of the newborn. In addition, a section on contraception is included. Conclusions: These multidisciplinary recommendations are considered decision-making tools for clinicians involved in the care of patients with systemic lupus erythematosus/antiphospholipid syndrome during pregnancy.

Objective SLE can affect any part of the gastrointestinal (GI) tract. GI symptoms are reported to occur in >50% of SLE patients. To describe the GI manifestations of SLE in the RELESSER (Registry of SLE Patients of the Spanish Society of Rheumatology) cohort and to determine whether these are associated with a more severe disease, damage accrual and a worse prognosis. Methods We conducted a nationwide, retrospective, multicentre, cross-sectional cohort study of 3658 SLE patients who fulfil ≥4 ACR-97 criteria. Data on demographics, disease characteristics, activity (SLEDAI-2K or BILAG), damage (SLICC/ACR/DI) and therapies were collected. Demographic and clinical characteristics were compared between lupus patients with and without GI damage to establish whether GI damage is associated with a more severe disease. Results From 3654 lupus patients, 3.7% developed GI damage. Patients in this group (group 1) were older, they had longer disease duration, and were more likely to have vasculitis, renal disease and serositis than patients without GI damage (group 2). Hospitalizations and mortality were significantly higher in group 1. Patients in group 1 had higher modified SDI (SLICC Damage Index). The presence of oral ulcers reduced the risk of developing damage in 33% of patients. Conclusion Having GI damage is associated with a worse prognosis. Patients on a high dose of glucocorticoids are at higher risk of developing GI damage which reinforces the strategy of minimizing glucocorticoids. Oral ulcers appear to decrease the risk of GI damage.

Introduction Data on prevalence, association with vascular risk factors, clinical management and outcome of antiphospholipid syndrome (APS) in retinal vein occlusion (RVO) are scarce. Methods Patients diagnosed with RVO at a tertiary-care hospital, and two additional groups; population-based controls and patients with APS (RVO-APS) were studied. Prevalence, association with vascular risk factors, antiphospholipid antibody profile, clinical management, genetic thrombophilia profile, carotid ultrasound and outcome of RVO-APS patients were assessed and compared with controls. Results Some 331 consecutive patients with RVO and 281 controls were included. Overall, aPLs were more prevalent in RVO-patients than in controls (33, 10% vs. 12, 4.3%; adjusted OR 2.47; 95% CI 1.25–4.88; p = 0.009). Patients with RVO-APS showed a high-risk “aPL profile” (lupus anticoagulant or triple-positive). We did not find any difference regarding classic vascular risk factors, hyperhomocysteinemia, prior vascular events, and carotid plaque, in RVO-patients with or without APS. The phenotype of RVO-APS also differed from APS. Seven patients received anticoagulation and 24 were on low-dose aspirin. After a median follow-up of 62 months, 7 patients suffered a RVO relapse (4 of them had APLs) and no RVO-APS patient had a new thrombotic or vascular event outside the retina. Conclusions aPLs were more prevalent in RVO-patients than in controls, and in all patients, APS was not associated with any connective-tissue disease. RVO in the setting of APS seems not only related to atherosclerosis, but also to the “aPL profile”. In most of our RVO-patients with APS, low-dose aspirin was effective to prevent new or recurrent thrombotic events outside the retinal vessels. In these patients, we suggest that RVO could behave as an organ-specific manifestation of APS.

OBJECTIVES: (a) To determine serum 25-OH vitamin D (vitD) levels in primary antiphospholipid syndrome (APS) and to compare them with patients with positive antiphospholipid serology who do not meet clinical criteria for APS, and with healthy controls. (b) To analyze the association of vitD levels with both the clinical manifestations and the immunological profile of patients with primary APS. (c) To perform a meta-analysis evaluating potential differences in serum vitD levels between APS and controls as well as the frequency of vitD deficiency in APS patients. METHODS: Retrospective study including 74 patients with primary APS, 54 with positive antiphospholipid (aPL) serology not meeting clinical criteria for APS, and 215 healthy controls. We considered 30 and 10ng/ml as the thresholds for vitD insufficiency and deficiency, respectively. Meta-analysis included four case-control studies (325 primary APS patients and 507 controls) and was conducted by fitting random effects models and checked for heterogeneity. RESULTS: Median serum vitD levels were similar in the three groups: 21ng/ml in primary APS, 25ng/ml in the aPL-positive group, and 21ng/ml in controls (p = 0.115). However, we found differences in the PTH levels, being 40.4 ± 24.9pg/ml in APS, 34.1 ± 18.2pg/ml in aPL serology, and 23.4 ±12.6pg/ml in healthy controls (p < 0.001). Regarding vitD deficiency, we found significant differences across the groups: 16.2% in APS, 11.1% in patients with positive serology, and 3.7% in controls (p = 0.001). There was a trend for the presence of thrombotic events in patients with vitD deficiency (38.9% vs 19.1%, p = 0.071). The meta-analysis confirmed that the combined mean difference in serum vitD levels between APS and controls was -3.605 (p < 0.001) and that APS patients had an increased frequency of vitD deficiency, with an OR = 3.06 (95% CI: 2.12-4.43, p < 0.001). CONCLUSIONS: APS patients show higher frequency of vitD deficiency than the healthy individuals. The meta-analysis study, including three cohorts and ours, suggests that APS patients have significantly lower serum vitD levels and higher frequency of vitD deficiency than controls.

Resumen Introduccion El sindrome antifosfolipido (SAF) es un trastorno inmunitario adquirido, definido por la presencia de trombosis (arterial y/o venosa) y/o morbilidad del embarazo junto con la presencia de anticuerpos antifosfolipidicos (aFL) positivos. Existe una relacion clara entre los aFL y algunas manifestaciones no incluidas en los criterios clinicos, entre ellas, las hematologicas. Objetivos a) estudiar la probabilidad de desarrollar SAF clinico en pacientes con aFL positivos y trombocitopenia; b) identificar posibles factores de riesgo para trombosis, y c) estudiar la asociacion entre trombocitopenia y aFL. Metodos Estudio retrospectivo de 138 pacientes con aFL positivos sin cumplir criterios clinicos de SAF. Se definio trombocitopenia como una cifra de plaquetas ≤ 100.000/μl. Se excluyeron los pacientes con otras causas de trombocitopenia. Resultados Diecisiete de los 138 (12%) pacientes incluidos en el estudio presentaban trombocitopenia. La cifra media de plaquetas fue de 60.000/μl. El riesgo para desarrollar trombocitopenia fue mayor en los pacientes fumadores (OR 2,8; p = 0,044), en aquellos con anticoagulante lupico (OR 13,5; p Conclusiones En nuestra serie, la incidencia de trombocitopenia es del 12%. Los pacientes con aFL positivos que desarrollan trombocitopenia tienen un riesgo potencial de desarrollar trombosis. El tabaco podria ser un factor de riesgo para trombocitopenia. La carga de autoanticuerpos es un factor de riesgo para el desarrollo de trombocitopenia.

The antiphospholipid syndrome (APS) is an acquired immune disorder defined by the presence of thrombosis (arterial and/or venous) and/or pregnancy morbidity along with the presence of positive antiphospholipid antibodies (aPL). There is a clear relationship between aPL and some events not included in the clinical criteria, including haematologic.a) to study the probability of developing clinical APS in patients with positive aPL and thrombopenia; b) to identify potential risk factors for thrombosis, and c) to study the association between thrombocytopenia and aPL.A retrospective study of 138 patients with positive aPL without fulfilling clinical criteria for APS. Thrombocytopenia was defined as a platelet count≤100,000/μl. Patients with other causes of thrombocytopenia were excluded.Seventeen of the 138 (12%) patients in the study had thrombocytopenia. The mean platelet count was 60,000/μl. The risk of developing thrombocytopenia was higher in smokers (OR 2.8; P=.044), in those with lupus anticoagulant (OR 13.5; P.001) and those with higher burden of aPL (OR 50.8; P.001). After a mean follow-up of 146±60.3 months, 5 patients with thrombocytopenia (29.4%) developed thrombosis.In our series, the incidence of thrombocytopenia is 12%. aPL-positive patients who develop thrombocytopenia have a potential risk of developing thrombosis. Tobacco could be a risk factor for thrombocytopenia. Autoantibodies load is a risk factor for the development of thrombocytopenia.

Objective: To describe the incidence of bacteremia in a large multicentric cohort of patients with systemic lupus erythematosus (SLE) and their clinical characteristics and to identify risk factors. Methods: All bacteremic episodes from the Spanish RELESSER registry were included. Clinical and laboratory characteristics concerning bacteremia and SLE status, as well as comorbidities at the time of infection, were retrospectively collected. A comparison with sex- and age-matched SLE controls without bacteremia was made. A logistic regression was conducted. Results: The study included 114 episodes of bacteremia in 83 patients. The incidence rate was 2.7/1000 patient-years. At the time of bacteremia, the median age was 40.5 (range: 8-90) years, and 88.6% of patients were female. The Safety of Estrogens in Lupus Erythematosus National Assessment-Systemic Lupus Erythematosus Disease Activity Index was 4 [interquartile range (IQR) 8]; 41% had an SLE flare (66% severe); Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index was 3 (IQR 4). A comorbidity was recorded in 64% of cases. At the time of bacteremia, 88.6% received corticosteroids (68.6% > 10 mg/day) and 57% immunosuppressors. Gram-negative bacilli, most frequently Escherichia coli (29.8%), caused 52.6% of the episodes. The bacteremia-related mortality was 14% and bacteremia was recurrent in 27.2% of cases. A dose-response relationship was found between corticosteroids and bacteremia risk. In the multivariate analysis, these factors were associated with bacteremia: elevated creatinine (OR 1.31, 95% CI 1.01-1.70; p = 0.045), diabetes (OR 6.01, 95% CI 2.26-15.95; p < 0.001), cancer (OR 5.32, 95% CI 2.23-12.70; p < 0.001), immunosuppressors (OR 6.35, 95% CI 3.42-11.77; p < 0.001), and damage (OR 1.65, 95% CI 1.31-2.09; p < 0.001). Conclusion: Bacteremia occurred mostly in patients with active SLE and was frequently associated with severe flares and corticosteroid use. Recurrence and mortality were high. Immunosuppressors, comorbidities, and disease-related damage were associated with bacteremia. This work was supported by the Spanish Foundation of Rheumatology. JMPR is supported by grant 316265 (BIOCAPS) from the European Union 7th Framework Programme (FP7/ REGPOT-2012-2013.1) and FIS/ISCIII-Fondo Europeo de Desarrollo regional (FEDER) (Grant number PI11/02857).

Introduction Antiphospholipid antibodies (aPL) have been associated with organ damage and certain features in systemic lupus erythematosus(SLE) patients. Our aim was to investigate the differences between SLE patients according to the presence of aPL and/or clinical antiphospholipid syndrome (APS). Materials and methods Patients from the RELESSER-T registry were included. RELESSER-T is a Spanish multicenter, hospital-based, retrospective, SLE registry. Results We included 2398 SLE patients, 1372 of whom were positive for aPL. Overall 1026 patients were classified as SLE, 555 as SLE-APS and817 as SLE-aPL. Regarding cardiovascular risk factors, SLE-APS patients had higher rates of hypertension, dyslipidemia and diabetes than those with SLE-aPL and SLE ( p Conclusions SLE-APS patients exhibited more severe clinical profiles with higher frequencies of major organ involvement, greater damage accrual and higher mortality than SLE-aPL and SLE patients.

Background SARS-CoV-2 infection presents a high transmission in the group of health professionals in Spain (12-15% infected). Currently there is no accepted chemoprophylaxis but hydroxychloroquine (HDQ) is known to inhibit the coronavirus in vitro. Our hypothesis is that oral administration of hydroxychloroquine to healthcare professionals can reduce the incidence and prevalence of infection as well as its severity in this group. Methods Design: Prospective, single center, double blind, randomised, controlled trial (RCT). Participants: Adult health-care professionals (18-65 years) working in areas of high exposure and high risk of transmission of SARS-COV-2 (COVID areas, Intensive Care Unit –ICUs-, Emergency, Anesthesia and all those performing aerosol-generating procedures) will be included. Exclusion criteria include previous infection with SARS CoV2 (positive SARS-CoV-2 PCR or IgG serology), pregnancy or lactation, any contraindication to hydroxychloroquine or evidence of unstable or clinically significant systemic disease. Interventions Patients will be randomized (1:1) to receive once-daily oral Hydroxychloroquine 200mg for two months (HC group) or placebo (P group) in addition to the protective measures appropriate to the level of exposure established by the hospital. A serological evaluation will be carried out every 15 days with PCR in case of seroconversion, symptoms or risk exposure. Primary outcome is the percentage of subjects presenting infection (seroconversion and/or PCR +ve) by the SARS-Cov-2 virus during the observation period. Additionally, both the percentage of subjects in each group presenting Pneumonia with severity criteria (Curb 65 ≥2) and that of subjects requiring admission to ICU will be determined. Discussion While awaiting a vaccine, hygiene measures, social distancing and personal protective equipment are the only primary prophylaxis measures against SARS-CoV-2, but they have not been sufficient to protect our healthcare professionals. Some evidence of the in vitro efficacy of hydroxychloroquine against this virus is known, along with some clinical data that would support the study of this drug in the chemoprophylaxis of infection. However, there are still no data from controlled clinical trials in this regard. If our hypothesis is confirmed, hydroxychloroquine can help professionals fight this infection with more guarantees. Participants This is a single-center study that will be carried out at the Marqués de Valdecilla University Hospital. 450 health professionals working at the Hospital Universitario Marqués de Valdecilla in areas of high exposure and high risk of transmission of SARS COV2 (COVID hospital areas, Intensive Care Unit, Emergency, Anesthesia and all those performing aerosol-generating procedures) will be included. Inclusion criteria: 1) Health professionals aged between 18 and 65 years (inclusive) at the time of the first screening visit; 2) They must provide signed written informed consent and agree to comply with the study protocol; 3) Active work in high exposure areas during the last two weeks and during the following weeks. Exclusion criteria: 1) Previous infection with SARS CoV2 (positive coronavirus PCR or positive serology with SARS Cov2 negative PCR and absence of symptoms); 2) Current treatment with hydroxychloroquine or chloroquine; 3) Hypersensitivity, allergy or any contraindication for taking hydroxychloroquine, in the technical sheet; 4) Previous or current treatment with tamoxifen or raloxifene; 5) Previous eye disease, especially maculopathy; 6) Known heart failure (Grade III to IV of the New York Heart Association classification) or prolonged QTc; 7) Any type of cancer (except basal cell) in the last 5 years; 6) Refusal to give informed consent; 8) Evidence of any other unstable or clinically significant untreated immune, endocrine, hematological, gastrointestinal, neurological, neoplastic or psychiatric illness; 9) Antibodies positive for the human immunodeficiency virus; 10) Significant kidney or liver disease; 11) Pregnancy or lactation. Intervention and comparator Two groups will be analyzed with a 1: 1 randomization rate. Intervention: (n = 225): One 200 mg hydroxychloroquine sulfate coated tablet once daily for two months.Comparator (control group) (n = 225): One hydroxychloroquine placebo tablet (identical to that of the drug) once daily for two months Main outcomes The primary outcome of this study will be to evaluate: number and percentage of healthcare personnel presenting symptomatic and asymptomatic infection (see “Diagnosis of SARS CoV2 infection” below) by the SARS-Cov2 virus during the study observation period (8 weeks) in both treatment arms;number and percentage of healthcare personnel in each group presenting with Pneumonia with severity criteria (Curb 65 ≥2) and number and percentage of healthcare personnel requiring admission to the Intensive Care Unit (ICU) in both treatment arms. Diagnosis of SARS CoV2 infection Determination of IgA, IgM and IgG type antibodies against SARS-CoV-2 using the Anti-SARS-CoV-2 ELISA kit (EUROIMMUN Medizinische Labordiagnostika AG, Germany) every two weeks. In cases of seroconversion, a SARS-CoV-2 PCR will be performed to rule out / confirm an active infection (RT-PCR in One Step: RT performed with mastermix (Takara) and IDT probes, following protocol published and validated by the CDC Evaluation of COVID-19 in case of SARS-CoV-2 infection Randomisation Participants will be allocated to intervention and comparator groups according to a balanced randomization scheme (1: 1). The assignment will be made through a computer-generated numeric sequence for all participants Blinding (masking) Both participants and investigators responsible for recruiting and monitoring participants will be blind to the assigned arm. Numbers to be randomised (sample size) Taking into account the current high prevalence of infection in healthcare personnel in Spain (up to 15%), to detect a difference equal to or greater than 8% in the percentage estimates through a two-tailed 95% CI, with a statistical power of 80% and a dropout rate of 5%, a total of 450 participants will need to be included (250 in each arm). Trial Status The protocol approved by the health authorities in Spain (Spanish Agency for Medicines and Health Products “AEMPS”) and the Ethics and Research Committee of Cantabria (CEIm Cantabria) corresponds to version 1.1 of April 2, 2020. Currently, recruitment has not yet started, with the start scheduled for the second week of May 2020. Trial registration Eudra CT number: 2020-001704-42 (Registered on 29 March 2020) Full protocol The full protocol is attached as an additional file, accessible from the Trials website (Additional file 1). In the interest in expediting dissemination of this material, the familiar formatting has been eliminated; this Letter serves as a summary of the key elements of the full protocol. The study protocol has been reported in accordance with the Standard Protocol Items: Recommendations for Clinical Interventional Trials (SPIRIT) guidelines (Additional file 2).

We report the case of a 15-year old girl who presented with a non-tender right upper eyelid swelling. Magnetic resonance confirmed the presence of an enlargement of the orbicular muscle with moderate contrast enhancement. Biopsy revealed the presence of necrotizing granulomatous vasculitis. Further studies ruled out systemic involvement. Thus, she was diagnosed with isolated granulomatosis with polyangiitis (GPA). Treatment with steroids and methotrexate was started. Due to the persistence of the lesion, rituximab (RTX) was added with excellent clinical and radiological response. This is, to the best of our knowledge, the first case of isolated orbital GPA treated with RTX in a pediatric patient.

Background: Novel biomarkers have been described in rheumatoid arthritis (RA) patients, including antibodies to carbamylated proteins (anti-CarP) and to protein-arginine deiminases (PAD). Anti-PAD4 antibodies are associated with anti-citrullinated protein antibodies (ACPA) and worse baseline radiographic joint damage [1]. A subset of anti-PAD4 antibodies that cross-react with PAD3 and are associated with erosive disease, ACPA and progress despite treatment have also been described [1]. Objectives: To evaluate several novel RA markers in a cohort of RA and controls and their association with erosive disease and biological treatment use in RA. Methods: Sera from 116 RA patients [63 young onset RA (YORA) and 53 elderly onset RA (EORA)] and 155 controls [134 polymyalgia rheumatica (PMR) patients and 21 healthy individuals (HI) older than 60 years old] were included. Information on erosion status and biological treatment was available for 56 of the RA patients. The samples were tested for anti-PAD3 and anti-PAD4 IgG using the novel particle-based multi-analyte technology (PMAT, research use only, RUO), as well as for ACPA [CCP3 IgG ELISA and chemiluminescent immunoassay (CIA)] and anti-CarP IgG (ELISA, RUO). Results: Significantly higher levels of anti-PAD3, anti-PAD4 and ACPA (ELISA and CIA) but not CarP were observed in YORA vs. EORA (p Conclusion: Anti-PAD3, anti-PAD4 and ACPA are associated with disease onset at an early age. Anti-PAD4 are associated with erosive disease and biological treatment use in RA and represent a useful marker for better patient stratification. Reference: [1] Darrah, E., et al., Erosive rheumatoid arthritis is associated with antibodies that activate PAD4 by increasing calcium sensitivity. Sci Transl Med, 2013. 5(186): p. 186ra65. Disclosure of Interests: Laura Martinez-Prat Employee of: Inova Diagnostics (Not pharmaceutical, diagnostics company), Victor Martinez-Taboada: None declared, Marcos Lopez-Hoyos Consultant for: Inova Diagnostics (Not pharmaceutical, diagnostics company), Michael Mahler Employee of: Inova Diagnostics (Not pharmaceutical, diagnostics company)

Objective In order to agree on the fundamental aspects related to the management of pregnancy in patients with systemic lupus erythematosus (SLE) and antiphospholipid syndrome (APS), the Spanish Societies of Gynaecology and Obstetrics, Internal Medicine and Rheumatology set up a working group for the preparation of three consensus documents. Methods Each of the Scientific Societies involved proposed five representatives based on their experience in the field of pregnancy control in patients with autoimmune diseases. The recommendations were developed following the Delphi methodology. Results This second document contains the recommendations regarding the management of pregnancy in women with SLE and APS, including complications such as lupus activity, congenital heart block, thrombotic and obstetric manifestations of APS and placental vascular disease. Conclusions These multidisciplinary recommendations are considered decision-making tools for clinicians involved in the care of patients with SLE/APS during pregnancy.

Background Recurrent pregnancy losses are the most common obstetric manifestation of antiphospholipid syndrome (APS). Despite standard therapy with low dose aspirin (LDA) and low molecular weight heparin (LMWH), the rate of successful pregnancies is not greater than 70%. Corticosteroids have been suggested as a potential therapy in these patients. Our aim is to describe a cohort of patients with obstetric APS treated with low dose corticosteroids. Methods Retrospective study including 9 women diagnosed with primary APS. Clinical records were reviewed to obtain demographic and clinical data. Results Two women had a history of thrombosis, while the remaining 7 had merely obstetric manifestations. All had suffered from early pregnancy losses and 1 of them also had a history of fetal death. We studied 42 pregnancies in these women. The mean number of pregnancies was 4.67±0.71 per woman. Maternal age was 35.8±4.6 years. Overall there were 30 abortions (71.4%) and 1 fetal death (2.4%) Regarding treatments used during pregnancy, 25 (59.5%) pregnancies were on some treatment: LDA (25), LMWH (24), corticosteroids (13), and intravenous immunoglobulins (IVIG) (4). As expected, in all pregnancies treated with corticosteroids, these drugs were combined with LDA and LMWH. When analyzing the effect of therapies, we found a tendency to decrease pregnancy loss in pregnancies treated with LDA (64 vs 82.4%; p=0.3) and LMWH (62.5 vs 83.3%; p=0.18). Treatment with corticosteroids, significantly increased the rate of successful pregnancy (the rate of pregnancy loss was 38.5% in treated vs 86.2% in non treated pregnancies; p=0.003). The results of the global pregnancy analysis were confirmed by bivariate and multivariate GEE analysis. In the bivariate analysis, LDA tended to be protective (OR=0.38, CI 0.11–1.33; p=0.129) and LMWH and corticosteroids significantly protected against pregnancy loss (OR=0.34, CI 0.13–0.85; p=0.021; and OR=0.17, CI 0.06–0.51; p=0.002, respectively). After multivariate analysis, only corticosteroids remained inversely associated with pregnancy loss (OR=0.09, CI 0.012–0.683; p=0.020). However, the independent effects of LDA/LMWH could not be adequately tested because all patients on corticosteroids were also treated with LDA and LMWH. As adverse events, 2 cases of gestational diabetes and 1 of preeclampsia were observed. Conclusions The addition of corticosteroids to standard therapy with LDA and LMWH seems to be safe and effective for improving the pregnancy outcome in women with obstetric APS. Funding Source(s): This work was supported by a next-Val grant from IDIVAL (NVAL 17/19)

Background Antiphospholipid antibodies (aPL) have been associated with organ damage and certain features in systemic lupus erythematosus (SLE) patients. Our aim was to investigate the differences between SLE patients according to the presence of aPL and/or clinical antiphospholipid syndrome (APS). Methods Patients from the RELESSER-T registry were included. RELESSER-T is a multicenter, hospital-based registry, with retrospective cross-sectional collection of data from a large representative sample of adult non-selected patients with SLE attending Spanish rheumatology services from the public national health system. Results We included 3651 SLE patients and 1368 were positive for aPL (44.9% of patients were positive for anticardiolipin antibodies, 27.3% showed positivity for anti b2glycoprotein I and 24% for lupus anticoagulant). Overall 2283 patients were classified as SLE no aPL, 528 as SLE-APS and 840 as SLE-aPL. Demographic data, clinical and laboratory features in the different groups are showed in table 1. Regarding cardiovascular risk factors, SLE-APS patients had higher rates of hypertension, dyslipidemia and diabetes than SLE-aPL and SLE no aPL patients (p 0.5 grs), urinary cell casts, seizures and psychosis (p0.001). Overall, SLE-APS patients showed a lower rate of cutaneous manifestations and higher rates of neuropsychiatric, cardiac, pulmonary, renal, joint and ophthalmological manifestations (table 1). In accordance with a more severe clinical profile, higher frequency of anti-DNA antibodies and hypocomplementemia were observed in the SLE-APS group (p Conclusions SLE-APS patients show a more severe clinical profile with higher frequency of major organ involvement and more damage accrual than SLE-aPL and SLE no APL. Funding Source(s): None

Background Antiphospholipid antibodies (aPL) have been associated with organ damage and certain features in systemic lupus erythematosus (SLE) patients. Our aim is to investigate the association between the different aPL and SLE manifestations as well as to elucidate the influence of the load of antibodies. Methods Patients from the RELESSER-T registry were included. RELESSER-T is a multicenter, hospital-based registry, with retrospective cross-sectional collection of data from a large representative sample of adult non-selected patients with SLE attending Spanish rheumatology services from the public national health system. Results Out of a total of 3651 SLE patients, 1368 were positive for aPL (44.9% of patients were positive for anticardiolipin (aCL) antibodies, 27.3% for anti b2glycoprotein I (aB2GPI) and 24% for lupus anticoagulant (LA)). Regarding the load of antibodies, 20.6%, 12.1% and 4.8% were positive for one, two and three antibodies, respectively. The association between the different aPL, the number of positive antibodies and antiphospholipid syndrome related manifestations is showed in table 1. Overall, all types of aPL were associated with classic APS manifestations, although LA, IgG isotypes, and patients with more than one aPL display a higher risk to develop clinical APS. Regarding specific lupus manifestations, all aPL types showed a negative association with cutaneous manifestations, and was also significantly associated with the load of autoantibodies (p Conclusions The present study in a large SLE cohort confirm than there is a hierarchy for aPL and the risk of APS and lupus manifestations. aCL, and especially LA, confer a higher risk for major organ involvement in SLE patients. IgG isotypes and the load of aPL antibodies confer a higher risk for clinical APS and major lupus manifestations. Funding Source(s): None

Objective: To compare the prevalence of the main comorbidities in two large cohorts of patients with Primary Sjogren's Syndrome (pSS) and Systemic Lupus Erythematosus (SLE), with focus on cardiovascular (CV) diseases. Methods: Cross-sectional multicenter study where the prevalence of more relevant comorbidities in two cohorts was compared. Patients under follow-up from the SJOGRENSER (Spanish Rheumatology Society Register of pSS) and RELESSER (Spanish Rheumatology Society Register of SLE) registries, and who fulfilled the 2002-AECG and 1997-ACR classification criteria, respectively, were included. A binomial logistic regression analysis was carried out to explore potential differences, making general adjustments for age, sex and disease duration and specific adjustments for each variable, including CV risk factors and treatments, when it was judged appropriate. Results: A total of 437 pSS patients (95% female) and 2,926 SLE patients (89% female) were included. Mean age: 58.6 (p55-p75: 50.0-69.9) and 45.1 years (36.4-56.3), respectively (p

Objective Rheumatoid factor (RF) is a well-established diagnostic and prognostic biomarker in rheumatoid arthritis (RA). However, ∼20% of RA patients are negative for this anti-IgG antibody. To date, only variation at the HLA-DRB1 gene has been associated with the presence of RF. This study was undertaken to identify additional genetic variants associated with RF positivity. Methods A genome-wide association study (GWAS) for RF positivity was performed using an Illumina Quad610 genotyping platform. A total of 937 RF-positive and 323 RF-negative RA patients were genotyped for >550,000 single-nucleotide polymorphisms (SNPs). Association testing was performed using an allelic chi-square test implemented in Plink software. An independent cohort of 472 RF-positive and 190 RF-negative RA patients was used to validate the most significant findings. Results In the discovery stage, a SNP in the IRX1 locus on chromosome 5p15.3 (SNP rs1502644) showed a genome-wide significant association with RF positivity (P = 4.13 × 10(-8) , odds ratio [OR] 0.37 [95% confidence interval (95% CI) 0.26-0.53]). In the validation stage, the association of IRX1 with RF was replicated in an independent group of RA patients (P = 0.034, OR 0.58 [95% CI 0.35-0.97] and combined P = 1.14 × 10(-8) , OR 0.43 [95% CI 0.32-0.58]). Conclusion To our knowledge, this is the first GWAS of RF positivity in RA. Variation at the IRX1 locus on chromosome 5p15.3 is associated with the presence of RF. Our findings indicate that IRX1 and HLA-DRB1 are the strongest genetic factors for RF production in RA.

OBJECTIVE RA patients with serum ACPA have a strong and specific genetic background. The objective of the study was to identify new susceptibility genes for ACPA-positive RA using a genome-wide association approach. METHODS A total of 924 ACPA-positive RA patients with joint damage in hands and/or feet, and 1524 healthy controls were genotyped in 582 591 single-nucleotide polymorphisms (SNPs) in the discovery phase. In the validation phase, the most significant SNPs in the genome-wide association study representing new candidate loci for RA were tested in an independent cohort of 863 ACPA-positive patients with joint damage and 1152 healthy controls. All individuals from the discovery and validation cohorts were Caucasian and of Southern European ancestry. RESULTS In the discovery phase, 60 loci not previously associated with RA risk showed evidence for association at P < 5×10(-4) and were tested for replication in the validation cohort. A total of 12 loci were replicated at the nominal level (P < 0.05, same direction of effect as in the discovery phase). When combining the discovery and validation cohorts, an intronic SNP in the Solute Carrier family 8 gene (SLC8A3) was found to be associated with ACPA-positive RA at a genome-wide level of significance RA [odds ratio (95% CI): 1.42 (1.25, 1.6), Pcombined = 3.19×10(-8)]. CONCLUSIONS SLC8A3 was identified as a new risk locus for ACPA-positive RA. This study demonstrates the advantage of analysing relevant subsets of RA patients to identify new genetic risk variants.

Introduction: The role of the immune response in the pathogenesis of antiphospholipid syndrome (APS) remains elusive. It is possible that differences in the frequencies of Th17 cells and/or defects in the immunoregulatory mechanisms are involved in the pathogenesis of APS. Our aim was to determine the peripheral blood Th cells phenotype and the circulating cytokine profile in patients with primary APS (pAPS) and compare it with systemic lupus erythemathosus (SLE) as disease control group. Methods: The frequencies of circulating regulatory T cells (Tregs) were determined in PBMCs from 36 patients with pAPS by flow cytometry. As control groups we included 21 age- and gender-matched healthy controls (HC) and 11 patients with SLE. The suppressive capacity of Tregs was evaluated in vitro by coculture assay. On the other hand, intracellular cytokine production was assessed in Th1, Th2, and Th17 cells and circulating IL-6, IL-10, and IL-35 were measured by Cytometric Bead Array and ELISA. The quantification of Th master gene expression levels was performed by real time quantitative PCR. Results: pAPS patients and SLE patients did not show differences in the percentage or number of Tregs compared to HC. The suppressive capacity of Tregs was also similar in the three study group. Instead, we found higher FoxP3·mRNA expression levels in pAPS patients and HC than SLE patients. Regarding the Th17 response, patients with pAPS and HC showed a significantly lower frequency of circulating Th17 cells than SLE. However, no differences were observed in the Th1 response between patients and controls. Thus, increased Th17/Th1 and Th17/Treg ratios were found in SLE patients but not in pAPS patients. pAPS and SLE patients had higher serum IL-6 levels than HC but there was not difference between both disease groups. Besides, a significant increase in the immunosuppressive cytokine levels was observed only in pAPS as compared to HC. Conclusions: Our data demonstrate an increased inflammatory profile of peripheral blood CD4+ T cells from SLE as compared with pAPS mostly due to an increased Th17 response. In conclusion, there seems not to be a direct pathogenic role for Th cells in pAPS but in SLE.

ObjectivePsoriatic arthritis (PsA) is a chronic inflammatory arthritis affecting up to 30% of patients with psoriasis (Ps). To date, most of the known risk loci for PsA are shared with Ps, and identifying disease-specific variation has proven very challenging. The objective of the present study was to identify genetic variation specific for PsA.MethodsWe performed a genome-wide association study in a cohort of 835 patients with PsA and 1558 controls from Spain. Genetic association was tested at the single marker level and at the pathway level. Meta-analysis was performed with a case–control cohort of 2847 individuals from North America. To confirm the specificity of the genetic associations with PsA, we tested the associated variation using a purely cutaneous psoriasis cohort (PsC, n=614) and a rheumatoid arthritis cohort (RA, n=1191). Using network and drug-repurposing analyses, we further investigated the potential of the PsA-specific associations to guide the development of new drugs in PsA.ResultsWe identified a new PsA risk single-nucleotide polymorphism at B3GNT2 locus (p=1.10e-08). At the pathway level, we found 14 genetic pathways significantly associated with PsA (pFDRConclusionThese findings provide insights into the biological mechanisms that are specific for PsA and could contribute to develop more effective therapies.

Background Tumour Necrosis Factor (TNF) inhibitors have improved the management of many patients with rheumatoid arthritis (RA). However,~30% of anti-TNF treated patients do not show a significant clinical improvement. To date, little is known on the biological mechanisms underlying the differential response to anti-TNF agents. Objectives We sought to identify genetic variation associated with the anti-TNF response in RA using a sequential multi-omics approach. Methods First, we aimed to identify gene coexpression modules (GCMs) associated with anti-TNF response. For this objective, we extracted the RNA from synovial biopsies of 13 RA patients starting anti-TNF therapy and determined the expression profiles using Illumina microarrays. GCMs were identified using the WGCNA approach. The association between GCMs and anti-TNF response was performed using the eigengene of each GCM. Clinical response was defined using the EULAR criteria at week 14. To analyse the association of GCMs with anti-TNF response at the genetic level, we used 348 anti-TNF treated RA patients from Spain. The statistical analysis was performed using GWAS data and the set-based test in PLINK. The GCMs that were significantly associated with anti-TNF response were subsequently tested for validation in an independent cohort of 2706 anti-TNF treated RA patients. The functional implication of the validated GCMs was studied via pathway and cell type epigenetic enrichment analyses. Results We identified 148 GCMs in the RA synovium. From these, 15 GCMs were found to be associated with anti-TNF response (p Conclusions Our study shows the existence of a drug-specific genetic basis for the anti-TNF response. Therefore, this molecular diversity should be considered for biomarker research in RA. Disclosure of Interest None declared

The aim of this work is to study the prevalence of mycobacterial infection (M.I.), the associated factors and their clinical significance in patients included in a large SLE cohort. Methods Retrospective descriptive study of RELESSER patients with a history of M.I. and analysis of the factors associated with the infection of this aetiology. Results In RELESSER 3,658 SLE patients were included. 90% women, mean age of 32.9 years. 93% Caucasians. The mean follow-up time (±S.D.) was 120.2 (±87.6) months. 705 (19.3%) patients had at least a serious infection, 1227 serious infections occurred. M.I. were diagnosed in 42 patients (1.2% of all RELESSER patients, 3.4% of all serious infections), 85.7% women. The incidence rate of mycobacterial infection was 1 per 1000 patients/year (95% CI: 0.7 to 1.4). M.I. presentation was pulmonary in 18 (42.9%) patients and extrapulmonary in 24 (57.1%)patients:joints in 8 (19.0%) patients, soft tissue in 6 (14.3%) and other sites in 10 (23.8%). The extrapulmonary form was associated with the use of immunosuppressants: 84.6% of the 13 patients treated with immunosuppressive drugs versus 44.4% of the 27 patients without (p=0.01). We did not observe this association with the use of corticosteroids. To study the factors associated with mycobacterial infection, we performed a bivariate analysis including the variables associated with severe infection identified in RELESSER (age, sex, ethnicity, use of corticosteroids, immunosuppressants, antimalarials, previous admission by SLE activity, use of rituximab, use of anti-TNF, Katz severity index, SDI damage index, SLEDAI activity index and Charlson comorbidity index). There is a statistically significant association with previous admission by SLE activity (RR: 2.9,95–95% CI: 1.3 to 6.2, p=0.007), renal impairment (RR:2.0, 95% CI: 1,1 to 3,7, p=0,04), the Katz score (RR: 2.1, 95% CI:1.1–4.0,p=0.04) and the Charlson index (RR: 2.5; 95% CI: 1.3 to 4.8, p=0.009). The accumulated damage (SDI>0) was closely associated with significance: RR: 2.0; 95% CI: 1.0 to 4.0, p=0.07. The use of immunosuppressants was associated with a significant increase in the risk of mycobacterial infection: RR: 4.3; 95% CI: 2.2 to 8.3, p=0.31. Two patients (4.8%) died (1respiratory and 1extrapulmonary). The mean survival after diagnosis in these cases was 21 days. Conclusion M.I. in RELESSER affects 1.15% of patients. Its incidence rate is 1 per 1000 patients/year (95% CI: 0.7 to 1.4). Extrapulmonary localization affects more than half of the patients and is associated with the use of immunosuppressants. Previous admission by SLE activity, renal involvement, severity of SLE, and increased number of associated comorbidities are factors associated with the existence of mycobacterial infection.

Background: B-cell differentiation and B-cell tolerance checkpoints may be different in antiphospholipid syndrome (APS) from systemic lupus erythematosus (SLE) and can help to understand differences between them. Our aim was to define alterations of B-cell subsets in patients with primary APS (pAPS) and to compare them with SLE patients and healthy controls (HC). Methods: Cross-sectional study including three study groups: 37 patients with pAPS, 11 SLE patients, and 21 age- and gender-matched HC. We determined the frequencies of different B-cell subsets in peripheral blood naïve and memory compartments. In addition, we measured serum B cell-activating factor (BAFF) levels and circulating pro-inflammatory cytokines, such as IL-6, by commercial ELISA and CBA, respectively. Results: Patients with pAPS showed a lower percentage of immature and naïve B cells than patients with SLE (p = 0.013 and p = 0.010, respectively) and a higher percentage of non-switched memory B cells than patients with SLE (p = 0.001). No differences either in the percentage of switched memory cells or plasma cells were found among the different groups. Serum BAFF levels were higher in SLE patients than in healthy controls and pAPS patients (p = 0.001 and p = 0.017, respectively). A significant increase in the serum BAFF levels was also observed in pAPS patients compared to HC (p = 0.047). Circulating IL-6 levels were higher in SLE and pAPS patients than HC (p = 0.036 and p = 0.048, respectively). A positive correlation was found between serum BAFF and IL-6 levels in patients with SLE but not in pAPS (p = 0.011). Conclusions: Our characterization of peripheral blood B-cell phenotypes in pAPS demonstrates different frequencies of circulating B cells at different stages of differentiation. These differences in the naïve B-cell repertoire could explain the higher number and variety of autoantibodies in SLE patients in comparison to pAPS patients, especially in those with obstetric complications.

Objetivo Establecer recomendaciones para el manejo de pacientes con artritis reumatoide (AR) centrado en el papel de los farmacos antirreumaticos modificadores de enfermedad (FAME) sinteticos y biologicos disponibles, que sirvan de referencia para todos los profesionales implicados en la atencion de estos pacientes. Metodos Las recomendaciones se consensuaron a traves de un panel de 14 expertos previamente seleccionados por la Sociedad Espanola de Reumatologia (SER). Se recogio la evidencia disponible mediante la actualizacion de las 3 revisiones sistematicas (RS) que se utilizaron para las recomendaciones EULAR 2013, a las que se anadio una nueva RS para dar respuesta a una pregunta adicional. Todas fueron realizadas por miembros del grupo de revisores de la SER. La clasificacion del nivel de la evidencia y del grado de la recomendacion se realizo utilizando el sistema del Centre for Evidence-Based Medicine de Oxford. Se utilizo la metodologia Delphi para evaluar el grado de acuerdo entre los panelistas para cada recomendacion. Resultados Se emiten un total de 13 recomendaciones sobre el manejo terapeutico de pacientes con AR del adulto. El objetivo terapeutico debe ser tratar al paciente en fases precoces de la enfermedad, con el objetivo de la remision clinica, teniendo un papel central el metotrexato como FAME sintetico de referencia. Se actualizan las indicaciones de los FAME biologicos disponibles, se enfatiza la importancia de los factores pronosticos y se incide en el concepto de optimizacion de biologicos. Conclusiones Se presenta la quinta actualizacion de las recomendaciones SER para el manejo de la AR con FAME sinteticos y biologicos.

Background Autoimmune diseases are highly disabling chronic disorders characterized by the activation of multiple immune and inflammatory pathways against self-components. Clinical studies have demonstrated that autoimmune diseases have a higher prevalence of cardiovascular events compared to the general population. Understanding the genetic and biological mechanisms underlying cardiovascular disease (CVD) risk in autoimmunity could therefore be fundamental to develop more efficient preventive and therapeutic strategies. Objectives The objective of this study was to characterize the genetic basis of CVD risk in autoimmune diseases. Methods A total of 6,485 patients from the six autoimmune diseases RA, PA, SLE, PS, CD and UC were recruited by the Spanish biomedical consortium IMID Consortium. All patients were Caucasian European from the Spain. CVD patients were defined as having ≥1 out of the 3 most frequent cardiovascular phenotypes: (i) ischemic heart disease (ii) cerebrovascular accident and (iii) peripheral arterial disease. In order to characterize the genetic basis of CVD risk in autoimmune diseases, we used genome-wide genotyping data from all autoimmune disease patients included in the study. First, we tested the association of established CVD risk variants within each autoimmune disease. Second, we analyzed the association of autoimmune disease risk variants with an increase in CVD risk. Finally, we used the cross-phenotype meta-analysis approach (CPMA) to perform a genome-wide meta-analysis and identify global genetic patterns associated with CVD risk in autoimmune diseases. Results A total of 17 loci previously associated with CVD risk in the general population were significantly associated with CVD risk in the autoimmune patient cohorts ( P P CFLAR-CASP8 . The CPMA identified a total of 10 genetic patterns significantly associated with CVD risk across all autoimmune diseases. Two of these patterns showed a highly significant association with CVD risk in RA, PsA and SLE. The functional analysis of these two genetic patterns revealed a significant enrichment in key pathways related to the etiology of rheumatic diseases like TNFα ( FDR (FDR Conclusions The results of the present study represent an important step towards the characterization of the genetic basis of CVD in autoimmune diseases. These findings contribute to explain the higher prevalence of cardiovascular events observed in patients with autoimmune diseases compared to the general population. Disclosure of Interest None declared

Background Vitamin D, due to its immunoregulatory properties, has been implicated in the pathogenesis of autoimmune diseases, such as antiphospholipid syndrome (APS). Objectives A) To determine vitamin D levels in patients with primary APS and to compare them with patients with positive antiphospholipid antibodies (aPL), not meeting clinical criteria for APS, and with healthy controls. B) To analyze the association of the vitamin D levels with both the clinical manifestations and the immunological profile of patients with primary APS. Methods We conducted a retrospective study including patients attended at the rheumatology clinic from a tertiary facility in Northern Spain. We included 74 patients with primary APS, 54 patients with positive aPL serology not meeting clinical criteria for APS and 326 healthy controls adjusted by the month of vitamin D analysis. We considered 30 ng/ml and 10 ng/ml as the thresholds for vitamin D insufficiency and deficiency, respectively. Results Median levels of vitamin D were similar in the three groups: 21 (range 5–69) in primary APS, 25 (4–50) in the aPL-positive group, and 21 (4–105) in controls. Overall, 53.9% of measurements were performed during the sunny season (April to September). Ten percent of patients with primary APS were males, versus 16% in the aPL serology group and 26% among healthy controls (p=0.007). Mean age was 46±15 in primary APS, 49±17 in the aPL-positive group and 53±10 in the control group (p Conclusions More than 80% of patients with primary APS have insufficient levels of vitamin D and 16% of them have very low levels of vitamin D. Primary APS patients show a higher frequency of vitamin D deficiency than healthy controls. Patients with vitamin D insufficiency have more commonly positivity for lupus anticoagulant. Disclosure of Interest None declared