Study type

Study type

Non-interventional study

Scope of the study

Assessment of risk minimisation measure implementation or effectiveness
Non-interventional study

Non-interventional study design

Cohort
Study drug and medical condition

Name of medicine

OLUMIANT

Medical condition to be studied

Rheumatoid arthritis
Population studied

Age groups

Adults (18 to < 46 years)
Adults (46 to < 65 years)
Adults (65 to < 75 years)
Adults (75 to < 85 years)
Adults (85 years and over)

Estimated number of subjects

12000
Study design details

Main study objective

The goal of this study is to monitor the incidence and nature of key serious infections, MACE, VTE, and malignancies amongst patients exposed long-term to baricitinib compared to patients treated long-term with bDMARDs or cDMARDs.

Outcomes

1. Primary outcomes to be evaluated in comparative analyses: serious infections and opportunistic infections, major adverse cardiovascular events (MACE), malignancies, and venous thromboembolism. 2. Primary outcomes for descriptive analyses: lymphoma, herpes zoster, opportunistic infections, rhabdomyolysis, myelosuppression (agranulocytosis), hyperlipidemia, GI perforations, and liver injury.

Data analysis plan

Risk of each aggregate primary outcome will be compared between patients with rheumatoid arthritis (RA) treated with baricitinib and similar patients treated with (a) bDMARDs and (b)cDMARDs. Hazard ratios will be calculated based on Cox proportional hazard regression as a measure of the association between baricitinib and each comparative outcome. Propensity scores will be used to address imbalance of potential confounding factors across groups that might otherwise lead to confounding bias. Sensitivity analyses of malignancy will examine the effect of duration of baricitinib exposure and use of different latency windows. For MACE, sensitivity analyses will investigate an intent-to-treat approach. Recurrent events, such as for infections, will also be explored. Overall incidence rates and rates over time will be calculated separately for comparative, aggregate outcomes (primary outcomes #1 above) and less common outcomes (primary outcomes #2).
Documents
Study results
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