INTRODUCTION: Clinical remission is today the treatment goal for rheumatoid arthritis (RA), which requires fast and assertive therapeutic decisions for a tight control of disease activity. Few objective parameters are available to guide clinical decisions, particularly in switcher patients. We designed a preliminary algorithm introducing immunogenicity assessment in the current approach to patients with RA receiving tumour necrosis factor inhibitors (TNFi). OBJECTIVE: To evaluate the concordance between the new algorithm and current clinical practice, comparing the effectiveness of 'immunogenicity-based' versus 'empirical-based' switches in a cohort of patients with established RA receiving biologics. METHODS: EULAR therapeutic response was evaluated in 105 patients with RA (naive or switchers) over one year, through generalised estimation equation (GEE) analyses. Serum drug trough levels were assessed by ELISA and antidrug antibodies (ADAb) by Bridging ELISA. RESULTS: During follow-up, 48.6% of patients had therapeutic decisions concordant with the proposed algorithm (Group A), and 51.4% had discordant decisions (Group B). One year after the therapeutic decision, patients from Group A had a higher probability of achieving response (OR=7.91, p<0.001, 95% CI 3.27 to 19.13) and low disease activity (OR=9.77, p<0.001, 95% CI 4.69 to 20.37) than patients in Group B. CONCLUSIONS: Immunogenicity assessment might help to optimise therapeutic decisions, leading to a better control of disease activity with significantly better clinical outcomes in patients with RA receiving TNFi.
INTRODUCTION: Clinical remission is today the treatment goal for rheumatoid arthritis (RA), which requires fast and assertive therapeutic decisions for a tight control of disease activity. Few objective parameters are available to guide clinical decisions, particularly in switcher patients. We designed a preliminary algorithm introducing immunogenicity assessment in the current approach to patients with RA receiving tumour necrosis factor inhibitors (TNFi). OBJECTIVE: To evaluate the concordance between the new algorithm and current clinical practice, comparing the effectiveness of 'immunogenicity-based' versus 'empirical-based' switches in a cohort of patients with established RA receiving biologics. METHODS: EULAR therapeutic response was evaluated in 105 patients with RA (naive or switchers) over one year, through generalised estimation equation (GEE) analyses. Serum drug trough levels were assessed by ELISA and antidrug antibodies (ADAb) by Bridging ELISA. RESULTS: During follow-up, 48.6% of patients had therapeutic decisions concordant with the proposed algorithm (Group A), and 51.4% had discordant decisions (Group B). One year after the therapeutic decision, patients from Group A had a higher probability of achieving response (OR=7.91, p<0.001, 95% CI 3.27 to 19.13) and low disease activity (OR=9.77, p<0.001, 95% CI 4.69 to 20.37) than patients in Group B. CONCLUSIONS: Immunogenicity assessment might help to optimise therapeutic decisions, leading to a better control of disease activity with significantly better clinical outcomes in patients with RA receiving TNFi.
Authors: Valderilio Azevedo; Brian Hassett; João Eurico Fonseca; Tatsuya Atsumi; Javier Coindreau; Ira Jacobs; Ehab Mahgoub; Julie O'Brien; Ena Singh; Steven Vicik; Brian Fitzpatrick Journal: Clin Rheumatol Date: 2016-10-12 Impact factor: 2.980
Authors: Eva L Kneepkens; Mieke F Pouw; Gerrit Jan Wolbink; Tiny Schaap; Michael T Nurmohamed; Annick de Vries; Theo Rispens; Karien Bloem Journal: Br J Clin Pharmacol Date: 2017-08-22 Impact factor: 4.335
Authors: B Rup; M Pallardy; D Sikkema; T Albert; M Allez; P Broet; C Carini; P Creeke; J Davidson; N De Vries; D Finco; A Fogdell-Hahn; E Havrdova; A Hincelin-Mery; M C Holland; P E H Jensen; E C Jury; H Kirby; D Kramer; S Lacroix-Desmazes; J Legrand; E Maggi; B Maillère; X Mariette; C Mauri; V Mikol; D Mulleman; J Oldenburg; G Paintaud; C R Pedersen; N Ruperto; R Seitz; S Spindeldreher; F Deisenhammer Journal: Clin Exp Immunol Date: 2015-07-02 Impact factor: 4.330
Authors: Chamaida Plasencia; Teresa Jurado; Alejandro Villalba; Diana Peitedado; Maria Teresa López Casla; Laura Nuño; María Gema Bonilla; Ana Martínez-Feito; Emilio Martín-Mola; Dora Pascual-Salcedo; Alejandro Balsa Journal: Front Med (Lausanne) Date: 2015-10-08