Abstract
Data on infections in patients exposed to biologic therapies are mainly focused on rheumatoid arthritis (RA). Little is known about the safety profile in other immune-mediated connective tissue diseases (ICTD). The purpose of this study was to describe and to compare the risk of serious infections (SI) in patients with RA and other ICTD on anti-TNF or rituximab and to identify predictors of SI. We analyzed RA or other ICTD patients on anti-TNF or rituximab included in the Spanish registry BIOBADASER 2.0 (2000–2011). For each disease group, incidence rate (IR), mortality rate (MR) and IR ratio (IRR) of SI with 95 % CI were estimated. Risks were then standardized by age and sex to the general population. Risk factors for SI were assessed by Poisson regression models. A total of 3,301 patients on anti-TNF (n = 3,166) or rituximab (n = 135), of which 176 (5 %) had ICTD other than RA, were analyzed. IR of SI was higher in non-RA ICTD than in RA, with an IRR of 3.15 (95 % CI 1.86, 5.31) before adjustment and 1.96 (95 % CI 1.06, 3.65) after adjustment for age, comorbidity and corticoid use. Mortality due to infections was higher in ICTD although it did not reach statistical significance. Age, disease duration, comorbidities, corticosteroids and ICTD different to RA were all independently associated with SI. Patients with ICTD other than RA are at a high risk of SI when prescribed anti-TNF or rituximab, partly due to the excess comorbidity and immunosuppressive co-treatment, but also to the inflammatory disease. When evaluating the risk/benefit ratio of off-label medications in ICTD patients, age, comorbidities and corticoid use should carefully be taken into account, applying adequate preventive measures.
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Acknowledgments
The authors thank the dedication to BIOBADASER of Angel Guillen, monitor, and Juan Manuel Barrio, technology assistant. BIOBADASER is supported by the Research Unit of the Spanish Foundation for Rheumatology (FER), the Spanish Agency for Medicines and Medical Devices (AEMyPS) and the Spanish Society of Rheumatology (SER). Grants in approximately equal amounts (all under 25,000€/year) from Roche, Abbott, BMS, MSD and Pfizer contribute to the support of the registry. This work was partially supported by RETICS Program, RD08/0075 (RIER) from Instituto de Salud Carlos III (ISCIII). The pharmaceutical companies and RETICS Program had no role in this study. All researchers in this work are independent from funders. In the collaboration contracts signed by the Spanish Society of Rheumatology, independence of the BIOBADASER registry has been affirmed with respect to the analyses as well as the diffusion of data and results.
Conflict of interest
TCI and LC had financial relationships with Roche, Abbott and Pfizer; ELS had financial relationships with Roche, Abbott; SMF had financial relationships with Roche, Abbott, Pfizer, MSD and GSK. No other relationships or activities that could appear to have influenced the submitted work.
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On behalf of the BIOBADASER 2.0 Study Group.
Please refer the “Appendix” section for BIOBADASER 2.0 study group members.
Appendix: BIOBADASER 2.0 study group members
Appendix: BIOBADASER 2.0 study group members
Agustí Sellas, Basilio Rodríguez, Mireia Barceló, Sandra Farietta (Hospital Universitario Vall d’Hebron), María Montoro, Ainhoa González, Elena Herráez (Hospital Gregorio Marañón), Mª Dolores Ruíz-Montesino, Carmen Vargas (Hospital Universitario Virgen Macarena), Eva Pérez-Pampín (Hospital Clínico Universitario de Santiago), Ana Mª Ortiz, Eva Tomero (Hospital Universitario de La Princesa), Alberto Sifuentes, Fred Antón, Antonio Zea (Hospital Ramón y Cajal), Francisco Javier Manero Ruiz, Chesús Beltrán, Eugenio Giménez Úbeda, Fernando Jimenez Zorzo, Jesús Marzo, Marta Medrano, Ángela Pecondón (Hospital Universitario Miguel Servet), Mª Victoria Hernández, Raimon Sanmartí, Juan D Cañete (Hospital Clínic I Provincial), Carlos Rodriguez Lozano, Antonio Naranjo, Soledad Ojeda, Félix Francisco Hernández, Celia Erausquin, Íñigo Rúa, Juan Carlos Quevedo (Hospital de Gran Canaria Dr. Negrín), Sara Manrique, Inmaculada Ureña, Maria Victoria Irigoyen, Laura Cano (Hospital General Carlos Haya), Rosa Roselló Pardo (Hospital General San Jorge), Isabel Mateo, Javier Garcia, Eugenia Enríquez (Hospital 12 De Octubre), Cristina Campos (Hospital General Universitario de Valencia), Juan José García Borras, Rosa Negueroles, Luisa Muñoz, JL Valero, D Ibáñez (Hospital La Fe).
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Cobo-Ibáñez, T., Descalzo, M.Á., Loza-Santamaría, E. et al. Serious infections in patients with rheumatoid arthritis and other immune-mediated connective tissue diseases exposed to anti-TNF or rituximab: data from the Spanish registry BIOBADASER 2.0. Rheumatol Int 34, 953–961 (2014). https://doi.org/10.1007/s00296-014-2945-y
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DOI: https://doi.org/10.1007/s00296-014-2945-y