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• W2949287918 abstract "Background: an increased risk of malignancies (1.5-5 times) was found in Systemic Sclerosis (SSc). Well recognized risk factors are the diffuse form, advanced age and (1), more recently, the positivity for anti-RNA Polimerase III antibodies (aRNAP3) has assumed considerable importance (2). Objectives: the aim of this study was to evaluate the frequency of neoplasms and precancerous conditions, as well as the main risk factors, in our cohort of patients with SSc. Methods: we enrolled 312 consecutive patients (288/92% females and 24/8% males, mean age 62.3 years, average disease duration 108 months) afferent at our department from 2000 to 2018, with a diagnosis of SSc confirmed according to the 2013 aCR/EULAR criteria (3). All patients underwent clinical, instrumental and laboratory evaluation. In 93 patients, negative for anti-topoisomerase I antibodies (aScl70) and anti-centromere antibodies (ACA), the presence of aRNAP3 antibodies was evaluated by an ELISA method (QUANTA LiteTM RNA Pol III). Results: we found a limited form of disease in 229 patients (73.4%) and a diffuse form in 83 (26.6%). Eighty eight (28.2%) patients were positive for aScl70, 112 (35.9%) for aCA and 17 (5.4%) for aRNAP3. In the whole group, 44 (14%) patients had a positive familiar history for neoplasm while 105 (33.65%) had a history of neoplasms and/or precancerous conditions. Among these 105 cases, 44 (41.9%) were malignant, 50 (47.6%) benign and 11 (10.5%) had precancerous conditions. The most frequent neoplasms were breast carcinomas (14 cases/14.9%), thyroid (7 cases/7.4%), lung and kidney (3 cases/3.1%), melanomas (5 cases/5.3%). The most frequent precancerous condition was Barrett’s esophagus (7 cases/63.3%). Regarding the antibody profile, 5 (4.8%) patients were positive for anti-RNAP3 and only 2 (1.9%) of these patients presented a malignant neoplasm, breast cancer in both cases. In 30 cases (28.6%) these neoplastic/precancerous conditions had arisen in the close period (± 36 months) at the SSc diagnosis and only 3 of them were anti-RNAP3 positive. Among the evaluated risk factors. Only familiarity was significantly associated with the development of neoplasia (p = 0.003), confirmed at the multivariate analysis (OR 2.9, IC95% [1,5-5,7]; p=0,002). Conclusion: our study evaluated not only malignant neoplasms, but also benign neoplasms and precancerous conditions and identified familiarity as the only significant risk factor. In our cohort we did’nt find any relationship between the presence of anti-RNAP3 antibodies and the development of neoplasms, not even stratifying for the type of neoplasm. However, to better define our data, we should analyze anti-RNAP3 also in the double negative (antiScl70 and aCA) cases, in light of the recent evidence of double antibody positivity, as well as other newly investigated rare autoantibodies, associated with neoplasm in many connective tissue diseases, including SSc. References [1] Szekanecz E, et al. (2012) autoimmun Rev11, 852; [2] Shaha aAet al(2017) J Scleroderma Relat Disord. 2, 153; [3] Van den Hoogen F, et al. (2013) ann Rheum Dis72, 1747–55. Disclosure of interests: Katia Stefanantoni Consultant for: only 1 scientific advice for Italfarmaco in 2016, Natalia Di Tommaso: None declared, Nicoletta Iannace: None declared, Iliana Sciarra: None declared, Carlotta angelelli: None declared, Elena Marafioti: None declared, Greta Pellegrino: None declared, massimiliano vasile: None declared, Guido Valesini: None declared, Valeria Riccieri: None declared" @default.
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• W2949287918 date "2019-06-01" @default.
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• W2949287918 title "AB0688 NEOPLASTIC RISK IN SYSTEMIC SCLEROSIS: A MONOCENTRIC STUDY" @default.
• W2949287918 doi "https://doi.org/10.1136/annrheumdis-2019-eular.7801" @default.
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