scholarly journals Early monitoring of infliximab serum trough levels predicts long-term therapy failure in patients with axial spondyloarthritis

Author(s):  
A Martínez-Feito ◽  
V Navarro-Compán ◽  
B Hernández-Breijo ◽  
E Olariaga-Mérida ◽  
D Peiteado ◽  
...  
2020 ◽  
Author(s):  
Ana Martínez Feito ◽  
Victoria Navarro-Compán ◽  
Borja Hernández-Breijo ◽  
Eva Olariaga-Mérida ◽  
Diana Peiteado ◽  
...  

Abstract Background: The aim of our study is to evaluate whether serum infliximab trough levels (ITL) during the early stages of treatment are predictive of long-term clinical failure in patients with axial spondyloarthritis (axSpA).Methods: Longitudinal observational study involving 81 patients with axSpA recruited from the SpA-Paz cohort and monitored during infliximab therapy. Serum ITL were measured at baseline, week 2 (W2), W6 and W12 of treatment. Disease activity was assessed by the Ankylosing Spondylitis Disease Activity Score (ASDAS) at baseline, W24 and W54, and every 6 months thereafter until therapy failure. Non-clinically important improvement was defined by ΔASDAS<1.1. The association between serum ITL levels at W12 and clinical outcomes (non-improvement at W52, drug survival and drop-out due to secondary inefficacy) was investigated through logistic regression models and Kaplan Meier curves. Receiver operating characteristic (ROC) curves were employed to determine the best cut-off for serum ITL. Results: Out of the 81 patients, 45 (56%) did not achieve clinical improvement at W52. These patients had lower serum ITL at W12 compared to those who improved: ITL [median (IQR)]: 4.1(0.9-8.3) µg/ml vs 7.1(4.3-11.3)µg/ml, respectively; p=0.007). A cut-off of ITL<6.7µg/mL at W12 was significantly associated with: i) not achieving clinical improvement at W52 (OR: 2.3; 95%CI: 1.3-3.9); ii) shorter drug survival (5.0 years (95% CI: 3.8-6.2) vs 7.6 years (95% CI: 4.8-6.9); p=0.04); and iii) higher drop-out rates due to secondary inefficacy (OR: 3.5; 95%CI: 1.2-10.2). Conclusions: Serum ITL<6.7 µg/mL at W12 were associated with long-term clinical failure in patients with axSpA, especially due to secondary inefficacy.


1997 ◽  
Vol 17 (03) ◽  
pp. 161-162
Author(s):  
Thomas Hyers

SummaryProblems with unfractionated heparin as an antithrombotic have led to the development of new therapeutic agents. Of these, low molecular weight heparin shows great promise and has led to out-patient therapy of DVT/PE in selected patients. Oral anticoagulants remain the choice for long-term therapy. More cost-effective ways to give oral anticoagulants are needed.


2007 ◽  
Vol 40 (05) ◽  
Author(s):  
M Kungel ◽  
A Engelhardt ◽  
T Spevakné-Göröcs ◽  
M Ebrecht ◽  
C Werner ◽  
...  

2021 ◽  
Vol 12 ◽  
pp. 204201882110011
Author(s):  
Sarah Montenez ◽  
Stéphane Moniotte ◽  
Annie Robert ◽  
Lieven Desmet ◽  
Philippe A. Lysy

Background: Amiodarone treatment is effective against various types of arrhythmias but is associated with adverse effects affecting, among other organs, thyroid function. Amiodarone-induced thyroid dysfunction was not thoroughly evaluated in children as it was in adults, yet this affection may lead to irreversible neurodevelopmental complications. Our study aimed to define the incidence and risk factors of amiodarone-induced thyroid dysfunction in children. Methods: The study was designed as an observational study with a retrospective clinical series of 152 children treated by amiodarone in the Pediatric Cardiology Unit of our center from 1990 to 2019. All patients were divided into three groups according to their thyroid status: euthyroid, AIH (amiodarone-induced hypothyroidism) or AIT (amiodarone-induced thyrotoxicosis). Patients from these three groups were compared in terms of key clinical and therapeutic features. Results: Amiodarone-induced thyroid dysfunction was present in 23% of patients. AIT (5.3%) was three times less common than AIH (17.7%), and its occurrence increased with older age ( p < 0.05), treatment dosage ( p < 0.05), treatment duration ( p < 0.05) and the number of loading doses administered ( p < 0.05). There were no distinctive clinical features between euthyroid and AIH groups. A multivariable prediction model of AIT was built, with a yield of 66.7% as positive predictive value and 96.7% as negative predictive value. Conclusion: We observed that one in five children developed amiodarone-induced thyroid dysfunction. Special attention is required for older children with a high dosage and long-term therapy and who received a large number of loading doses, since these children are at risk to develop AIT, which is more delicate to manage than AIH.


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