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Background Antiphospholipid antibodies (aPL) have been associated with organ damage and certain features in SLE patients. Objectives Our aim was to investigate the differences between SLE patients according to the presence of aPL and/or clinical antiphospholipid syndrome. 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 (p≤0.001). 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 Conclusion 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. Disclosure of Interests Leyre Riancho-Zarrabeitia Grant/research support from: Abbvie, Pfizer, UCB, MSD, GSK, Amgen, Roche travel grants, Victor Martinez Taboada: None declared, Inigo Rua-Figueroa: None declared, Fernando Sanchez-Alonso: None declared, Maria Galindo-Izquierdo: None declared, Juan Ovalles: None declared, Alejandro Olive Grant/research support from: ND, Consultant for: ND, Paid instructor for: ND, Speakers bureau: ND, Antonio Fernandez-Nebro: None declared, Jaime Calvo Consultant for: Bristol-Myers Squibb, Janssen, Celgene, Sanofi Genzyme, Speakers bureau: Bristol-Myers Squibb, Raul Menor Almagro: None declared, Eva Tomero Muriel: None declared, Esther Uriarte Isacelaya: None declared, Alina Boteanu: None declared, Mariano Andres: None declared, Mercedes Freire Gonzalez: None declared, Gregorio Santos Soler: None declared, Esther Ruiz Lucea: None declared, Monica Ibanez Barcelo: None declared, Ivan Castellvi Consultant for: I received fees less than 5000USD as a consultant for Kern and Actelion, Paid instructor for: I received fees less than 2000USD as a instructor for Boehringer -Ingelheim, Novartis and Gebro, Speakers bureau: ND, Carles Galisteo: None declared, Victor Quevedo Vila: None declared, Enrique Raya: None declared, J. Narvaez Consultant for: Bristol-Myers Squibb, Lorena Exposito: None declared, Jose A Hernandez Beriain: None declared, Loreto Horcada: None declared, Jose M Pego-Reigosa: None declared

Background Objectives Estimate the frequency of the association of SLE with other autoimmune diseases in a large Spanish cohort of patients with systemic lupus erythematosus (SLE). Methods Design RELESSER is a nationwide multicentre, hospital-based registry of SLE patients. This is a cross-sectional study. Patients: Unselected consecutive adult patients with SLE, classified according to the ACR 1997 criteria. Main outcome: Polyautoimmunity was defined as patients who fulfilled criteria for SLE and other autoimmune disease: autoimmune thyroiditis, rheumatoid arthritis, systemic sclerosis or inflammatory myopathy and mixed connective tissue disease. Multiple autoimmune syndrome (MAS) was defined as patients who meet SLE criteria and at least two other autoimmune diseases. Statistical analysis: Descriptive. Multiple logistic regression analysis to investigate the possible risk factors for polyautoimmunity in patients with SLE. Results From 3679 (91.4%) patients included in the registry, 501 (13.6%) had Polyautoimmunity. The characteristics are showed in Table. The most frequent polyautoimmunity types associated with SLE were: autoimmune thyroiditis (7.5%), other connective tissue disorders (7.1%). Other autoimmune diseases not considered within the scope of Polyautoimmunity was 12.8% for Sjogren’s syndrome and 12.7% for antiphospholipid syndrome. A family history of SLE was 12.4% and MAS in 10.2%. The multivariate analysis identified age (odds ratio [95% CI], 1.01 [1.00-1.02]), sex (3.00 [1.48-6.04]), Raynaud’s phenomenon (1.79 [1.34-2.39]), pulmonary fibrosis (2.88 [1.32-6.30]), Ro-La autoantibodies (1.68 [1.20-2.36]), antiRNP (1.79 [1.32-2.42]) and treatment with methotrexate (1.54 [1.08-2.18]) or with antimalarials (0.57 [0.41-0.78]) as factors associated with polyautoimmunity. Conclusion SLE patients associated poliautoimmunity in 14%, MAS in 2%. More studies are needed to better understand the increase of polyautoimmunity in these patients. Disclosure of Interests Natalia Mena-Vazquez: None declared, Antonio Fernandez-Nebro: None declared, Inigo Rua-Figueroa: None declared, Maria Galindo-Izquierdo: None declared, Juan Ovalles: None declared, Alejandro Olive Grant/research support from: ND, Consultant for: ND, Paid instructor for: ND, Speakers bureau: ND, Jaime Calvo Consultant for: Bristol-Myers Squibb, Janssen, Celgene, Sanofi Genzyme, Speakers bureau: Bristol-Myers Squibb, Raul Menor-Almagro: None declared, Eva Tomero Muriel: None declared, Esther Uriarte Isacelaya: None declared, Alina Boteanu: None declared, Mariano Andres: None declared, Mercedes Freire Gonzalez: None declared, J. Narvaez Consultant for: Bristol-Myers Squibb, Tomas Vazquez Rodriguez: None declared, Ricardo Blanco: None declared, Jose A Hernandez Beriain: None declared, Jesus Ibanez: None declared, Enrique Raya: None declared, Joan Calvet: None declared, Jose M Pego-Reigosa: None declared

Background Primary Sjogren’s syndrome (pSS) is a systemic autoimmune disease characterized by the involvement of the exocrine glands, mainly salivary and lacrimal glands. Approximately half of patients will experience extraglandular complications throughout their evolution. Objectives To characterize the involvement of the nervous system (NS) in patients with pSS. Methods Multicenter cross-sectional study of a cohort of patients with pSS, constructed by random selection of pSS patients fulfilling the 2002 American-European Consensus Criteria for pSS1 from 33 rheumatology units. Through review of clinical records and interview with patients, demographic, clinical, analytical, therapeutic data and disease activity indexes were collected. Univariate analysis was done by Chi square test, Mann-Whitney U test and Student’s t test. Multivariate analysis was done by linear logistic regression. A p Results 437 patients were included (95% women, median age of 58 years). 65 patients developed NS involvement: 26 patients central NS, 31 peripheral NS and 8 both. Multivariate analysis showed association between NS involvement and atherosclerotic stroke (OR 10.4, 95% CI 2.8-38.5), ear disease (OR 2.1, 95% CI 1.1-4.2) and myopathy (OR 6.5, 95% CI 1.3-31,6). Patients with NS involvement had higher probability of being treated with glucocorticoids (OR 3.3, 95%CI 1.5-7.2) and cyclophosphamide (OR 6.8, 95% CI 1.5-31). Conclusion 15% of patients with pSS develope NS involvement that is associated with atherosclerotic stroke, ear disease and myopathy. Reference [1] Vitali C. et al. Ann Rheum Dis 2002; 61:554 Disclosure of Interests Jose Luis Andreu: None declared, Carlos Sanchez-Piedra: None declared, Monica Fernandez Castro: None declared, Victor Martinez Taboada: None declared, Alejandro Olive: None declared, Jose Rosas Consultant for: Abbvie, Amgen, Bristol, Janssen, Lilly, Merck Sharp & Dohme, Pfizer, UCB Pharma, Speakers bureau: Abbvie, Amgen, Bristol, Janssen, Lilly, Merck Sharp & Dohme, Pfizer, UCB Pharma, Raul Menor-Almagro: None declared, Beatriz Rodriguez Lozano: None declared, Angel Garcia-Aparicio: None declared, Francisco J Lopez-Longo: None declared, Sara Manrique Arija Speakers bureau: ABBvie, MSD, Janssen, Lillly, Roche, Pfyzer, Novartis., Jesus ALberto Garcia Vadillo: None declared, Susana Gil: None declared, Ruth Lopez Gonzalez: None declared, J. Narvaez Consultant for: Bristol-Myers Squibb, Carles Galisteo: None declared, Jorge Juan Gonzalez Martin: None declared, M E Ruiz: None declared, Inigo Rua-Figueroa: None declared, Oscar Illera: None declared, Lurdes Romani: None declared, Sheila Melchor: None declared, Begona Moreira: None declared, Enrique Raya: None declared, Jose M Pego-Reigosa: None declared, Natalia Cid Boza: None declared, Enrique Judez: None declared, Clara Moriano: None declared, Vicente Torrente: None declared, Hector Corominas: None declared, Blanca Garcia-Magallon: None declared, Carlos Guillen-Astete: None declared, Ivan Castellvi Consultant for: I received fees less than 5000USD as a consultant for Kern and Actelion, Paid instructor for: I received fees less than 2000USD as a instructor for Boehringer -Ingelheim, Novartis and Gebro, Speakers bureau: ND, Cristina Bohorquez: None declared, Javier Loricera: None declared, Joaquin Belzunegui: None declared

Objectives: To estimate the incidence of cancer in systemic lupus erythematosus (SLE) patients and to analyze factors associated with cancer differentiating between hormone-sensitive (HS) and non-HS cancers. Methods: Multicenter retrospective study of a cohort of patients included in Spanish Society of Rheumatology Lupus Registry (RELESSER). The first cancer after the diagnosis of SLE, sociodemographic, clinical, activity, cumulative damage, severity, comorbidity, treatments, and refractory disease data were collected. Cancers were classified into HS (prostate, breast, endometrial and ovarian) and non-HS (the rest). Standardized incidence ratio (SIR) was calculated and logistics regression models were constructed to identify factors associated with cancer. Results: We included 3539 patients (90.4% women) with SLE (ACR-97 criteria), of whom 154 had cancer (91% women), and 44 were HS (100% women). The SIR for cancer was 1.37 (95% CI: 1.15-1.59), reaching higher values in women under 65 years [2.38 (95% CI: 1.84-2.91)]. The SIR in women with cancer HS vs. non-HS was 1.02 (95% CI: 0.13-1.91) and 1.93 (95% CI: 0.98-2.89)], respectively. In HS vs. non-HS cancers, age at diagnosis of SLE [Odds ratio (OR) 1.04 (p = 0.002) vs. 1.04 (p = 0.019), respectively] and the evolution time [OR 1.01 (p Conclusion: The incidence of cancer in patients with SLE is increased compared to the Spanish population, specially in younger women. This increase might be due to non-HS cancers. SLE with more cumulative damage and more prescription of ACE inhibitors might associate with non-HS cancers. Disclosure of Interests: Tatiana Cobo-Ibanez: None declared, ANA URRUTICOECHEA-ARANA: None declared, Inigo Rua-Figueroa: None declared, Maria Auxiliadora Martin-Martinez: None declared, Juan Ovalles: None declared, Maria Galindo-Izquierdo: None declared, Jaime Calvo-Alen: None declared, Alejandro Olive: None declared, Antonio Fernandez-Nebro: None declared, Raul Menor-Almagro: None declared, Eva Tomero Muriel: None declared, Loreto Horcada: None declared, Esther Uriarte Isacelaya: None declared, Victor Martinez Taboada: None declared, Jose Luis Andreu: None declared, Alina Boteanu: None declared, J. Narvaez Consultant for: Bristol-Myers Squibb, Cristina Bohorquez: None declared, Carlos A. Montilla-Morales: None declared, Gregorio Santos Soler: None declared, Blanca Hernandez-Cruz: None declared, Paloma Vela-Casasempere Grant/research support from: UCB, Abbvie, Pfizer, Roche, Bristol-Myer-Squibb (another research, not BIOBADASER related), Consultant for: UCB, Lilly, Pfizer, Roche, Bristol-Myer-Squibb, Speakers bureau: Roche, UCB, MSD, Pfizer, GSK, BMS, Lilly, Eva Salgado Perez: None declared, Mercedes Freire Gonzalez: None declared, Jose A Hernandez Beriain: None declared, Elvira Diez Alvarez: None declared, Lorena Exposito: None declared, Olaia Fernandez- Berrizbeitia: None declared, Jose Luis Marenco Speakers bureau: abbie, pfizer, novartis, janmsen, Jose M Pego-Reigosa: None declared

Background Antiphospholipid antibodies (aPL) have been associated with organ damage and certain features in SLE patients. Objectives 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 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 significant negative association with cutaneous manifestations. LA and aCL were associated with an increased risk of cardiac, respiratory and neuropsychiatric manifestations (p Conclusion 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 increase the risk for clinical APS and major lupus manifestations. Disclosure of Interests: Leyre Riancho-Zarrabeitia Grant/research support from: Abbvie, Pfizer, UCB, MSD, GSK, Amgen, Roche travel grants, Victor Martinez Taboada: None declared, Inigo Rua-Figueroa: None declared, Fernando Sanchez-Alonso: None declared, Maria Galindo-Izquierdo: None declared, Juan Ovalles: None declared, Alejandro Olive Grant/research support from: ND, Consultant for: ND, Paid instructor for: ND, Speakers bureau: ND, Antonio Fernandez-Nebro: None declared, Jaime Calvo Consultant for: Bristol-Myers Squibb, Janssen, Celgene, Sanofi Genzyme, Speakers bureau: Bristol-Myers Squibb, Raul Menor-Almagro: None declared, Eva Tomero Muriel: None declared, Esther Uriarte Isacelaya: None declared, Alina Boteanu: None declared, Mariano Andres: None declared, Mercedes Freire Gonzalez: None declared, Gregorio Santos Soler: None declared, Esther Ruiz Lucea: None declared, Monica Ibanez Barcelo: None declared, Ivan Castellvi Consultant for: I received fees less than 5000USD as a consultant for Kern and Actelion, Paid instructor for: I received fees less than 2000 USD as a instructor for Boehringer -Ingelheim, Novartis and Gebro, Speakers bureau: ND, Carles Galisteo: None declared, Victor Quevedo Vila: None declared, Enrique Raya: None declared, J. Narvaez Consultant for: Bristol-Myers Squibb, Lorena Exposito: None declared, Jose A Hernandez Beriain: None declared, Loreto Horcada: None declared, Jose M Pego-Reigosa: None declared