Dataset Information

Monocyte populations as markers of response to adalimumab plus MTX in rheumatoid arthritis.

ABSTRACT:

Introduction

The treatment of rheumatoid arthritis (RA) patients with anti-tumor necrosis factor alpha (TNF?) biological drugs has dramatically improved the prognosis of these patients. However, a third of the treated patients do not respond to this therapy. Thus, the search for biomarkers of clinical response to these agents is currently highly active. Our aim is to analyze the number and distribution of circulating monocytes, and of their CD14?highCD16?, CD14?highCD16? and CD14?lowCD16+ subsets in methotrexate (MTX) non-responder patients with RA, and to determine their value in predicting the clinical response to adalimumab plus MTX treatment.

Methods

This prospective work investigated the number of circulating monocytes, and of their CD14?highCD16?, CD14?highCD16? and CD14?lowCD16? subsets, in 35 MTX non-responder patients with RA before and after three and six months of anti-TNF? treatment using multiparametric flow cytometry. The number of circulating monocytes in an age- and sex-matched healthy population was monitored as a control.

Results

Non-responder patients with RA show an increased number of monocytes and of their CD14?highCD16?, CD14?highCD16? and CD14?lowCD16? subsets after three months of adalimumab plus MTX treatment that remained significantly increased at six months. In contrast, significant normalization of the numbers of circulating monocytes was found in responders at three months of adalimumab plus MTX treatment that lasts up to six months. CX3CR1 expression is increased in monocytes in non-responders. At three months of anti-TNF? treatment the number of circulating monocytes and their subsets was associated with at least 80% sensitivity, 84% specificity and an 86% positive predictive value (PPV) in terms of discriminating between eventual early responders and non-responders.

Conclusions

The absolute number of circulating monocytes and of their CD14?highCD16?, CD14?highCD16? and CD14?lowCD16? subsets at three months of adalimumab plus MTX treatment, have a predictive value (with high specificity and sensitivity) in terms of the clinical response after six months of anti-TNF? treatment in patients with RA.

SUBMITTER: Chara L

PROVIDER: S-EPMC3580569 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature

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Publications

Monocyte populations as markers of response to adalimumab plus MTX in rheumatoid arthritis.

Chara Luis L Sánchez-Atrio Ana A Pérez Ana A Cuende Eduardo E Albarrán Fernando F Turrión Ana A Chevarria Julio J Sánchez Miguel A MA Monserrat Jorge J de la Hera Antonio A Prieto Alfredo A Sanz Ignacio I Diaz David D Alvarez-Mon Melchor M

Arthritis research & therapy 20120727 4

<h4>Introduction</h4>The treatment of rheumatoid arthritis (RA) patients with anti-tumor necrosis factor alpha (TNFα) biological drugs has dramatically improved the prognosis of these patients. However, a third of the treated patients do not respond to this therapy. Thus, the search for biomarkers of clinical response to these agents is currently highly active. Our aim is to analyze the number and distribution of circulating monocytes, and of their CD14⁺highCD16⁻, CD14⁺highCD16⁺ and CD14⁺lowCD16 ...[more]

PMID: 22838733

Similar Datasets

Project description:PurposeTo compare the efficacy, safety, and cost-effectiveness of methotrexate (MTX) plus hydroxychloroquine (HCQ) vs MTX plus leflunomide (LEF) in established rheumatoid arthritis (RA) with inadequate response to MTX monotherapy in a real-world Chinese cohort.Patients and methodsA prospective RA cohort (n=549) was screened with eligible patients who had inadequate response (disease activity score in 28 joints using erythrocyte sedimentation rate, DAS28-ESR>3.2) to initial MTX monotherapy and subsequently received either MTX+HCQ or MTX+LEF. Propensity score matching (PSM) was applied to adjust the possible baseline confounders between two groups. The primary outcome was the proportion of patients achieving first remission (DAS28-ESR<2.6) during follow-up by log rank test. Secondary outcomes were changes of DAS28, glucocorticoids (GCs) exposure, safety, cost-effectiveness, sustained remission, and low disease activity (LDA) rate after 24-month follow-up.ResultsOverall, 222 eligible patients were subjected to the aforementioned two treatment protocols (MTX+HCQ, n=102; MTX+LEF, n=120). After PSM adjustment, 97 patients in each group were analyzed. A higher remission rate was observed in the MTX+HCQ group than in the MTX+LEF group (70.1% vs 56.7%, P=0.048). The median time to remission was 11 and 16 months in the two groups, respectively. At the endpoint, more patients achieved remission (46.8% vs 32.5%, P=0.063) and maintained sustained LDA in the HCQ group (53.2% vs 38.6%, P=0.062) and also more patients withdrew GCs in this group (32% vs 16.7%, P=0.053) than those in the LEF group. Safety profiles were non-alarming, with no significant difference between the two groups. The incremental cost-effectiveness ratio yielded by MTX+HCQ over MTX+LEF was $1,111.8 per quality-adjusted life-year (QALY), within the cost-effective threshold set as the per capita gross domestic product (GDP) of China.ConclusionThe MTX+HCQ combination was seemingly superior to MTX+LEF in a real-world cohort of Chinese RA patients with inadequate response to methotrexate monotherapy in respect of the efficacy and cost-effectiveness.

Dataset Information

Monocyte populations as markers of response to adalimumab plus MTX in rheumatoid arthritis.

Introduction

Methods

Results

Conclusions

Publications

Monocyte populations as markers of response to adalimumab plus MTX in rheumatoid arthritis.

Similar Datasets

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