Dataset Information

Malignant Neoplasms in Patients With Rheumatoid Arthritis Treated With Tumor Necrosis Factor Inhibitors, Tocilizumab, Abatacept, or Rituximab in Clinical Practice: A Nationwide Cohort Study From Sweden.

ABSTRACT:

Importance

Considering the widespread and increasing use of biological immunomodulators (biological disease-modifying antirheumatic drugs [bDMARDs]) to treat chronic inflammatory conditions, and the concern that immunomodulation may alter cancer risk and progression, the limited available data on use of these therapies as used in clinical practice and cancer risks are a concern.

Objective

To assess the risk of incident malignant neoplasms in patients with rheumatoid arthritis (RA) treated with bDMARDs.

Design, setting, and participants

This was a national register-based prospective cohort study of the public health care system in Sweden from 2006 to 2015. Cohorts of patients with RA initiating treatment with tocilizumab (n?=?1798), abatacept (n?=?2021), and rituximab (n?=?3586), a tumor necrosis factor inhibitor (TNFi) as first-ever (n?=?10?782) or second-ever (n?=?4347) bDMARD, a biologics-naive cohort treated with conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) (n?=?46?610), and a general population comparator cohort (n?=?107?491).

Exposures

Treatment with tocilizumab, abatacept, rituximab, or TNFi.

Main outcomes and measures

Outcomes included a first invasive solid or hematologic malignant neoplasm, or skin cancer. Hazard ratios were calculated using Cox-regression, adjusted for age, sex, disease and treatment characteristics, and educational level.

Results

We identified a total of 15?129 initiations of TNFi as the first or second bDMARD, 7405 initiations of other bDMARDs, and 46?610 csDMARD users. The mean age varied from 58 to 64 years, and the proportion of female patients varied from 71% to 80%, across the 7 cohorts under study. The observed numbers of events (crude incidence per 100?000 person-years) for a first invasive solid or hematologic malignant neoplasm were 50 (959) for tocilizumab, 61 (1026) for abatacept, 141 (1074) for rituximab, 478 (978) for initiators of TNFi as first bDMARD, and 169 (917) for TNFi as second bDMARD. There were no statistically significant differences between initiators of a first or second TNFi, or other bDMARDs, and bDMARD-naive RA for any of a total of 25 drug- and outcome-specific comparisons, with 1 exception (abatacept and increased risk of squamous cell skin cancer).

Conclusions and relevance

The overall risk of cancer among patients with RA initiating TNFi as first or second bDMARD, tocilizumab, abatacept, or rituximab does not differ substantially from that of biologic drug-naive, csDMARD-treated patients with RA, although altered risks for specific cancer types, or those with longer latency, cannot be excluded.

SUBMITTER: Wadstrom H

PROVIDER: S-EPMC5710271 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Publications

Malignant Neoplasms in Patients With Rheumatoid Arthritis Treated With Tumor Necrosis Factor Inhibitors, Tocilizumab, Abatacept, or Rituximab in Clinical Practice: A Nationwide Cohort Study From Sweden.

Wadström Hjalmar H Frisell Thomas T Askling Johan J

JAMA internal medicine 20171101 11

<h4>Importance</h4>Considering the widespread and increasing use of biological immunomodulators (biological disease-modifying antirheumatic drugs [bDMARDs]) to treat chronic inflammatory conditions, and the concern that immunomodulation may alter cancer risk and progression, the limited available data on use of these therapies as used in clinical practice and cancer risks are a concern.<h4>Objective</h4>To assess the risk of incident malignant neoplasms in patients with rheumatoid arthritis (RA) ...[more]

PMID: 28975211

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Dataset Information

Malignant Neoplasms in Patients With Rheumatoid Arthritis Treated With Tumor Necrosis Factor Inhibitors, Tocilizumab, Abatacept, or Rituximab in Clinical Practice: A Nationwide Cohort Study From Sweden.

Importance

Objective

Design, setting, and participants

Exposures

Main outcomes and measures

Results

Conclusions and relevance

Publications

Malignant Neoplasms in Patients With Rheumatoid Arthritis Treated With Tumor Necrosis Factor Inhibitors, Tocilizumab, Abatacept, or Rituximab in Clinical Practice: A Nationwide Cohort Study From Sweden.

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