Articles By Antoni Chan, MD, PhD

The disconnect between objective inflammatory response and PROs in AxSpA
The assessment of disease activity in AxSpA involves the use of objective inflammatory response (OIR) and patient reported outcomes (PROs). In clinics, a combination of OIR and PROs are used to measure disease activity and response to treatment.
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Dual inhibition of IL17A and IL17F in AxSpA
A new target for treatment in AxSpA is the dual inhibition of IL17A and IL17F (IL17A/F). IL17A is a key driver of the inflammation in the AxSpA and Psoriatic Arthritis (PsA). IL17A and its structurally related IL17F share biologic functional properties. Inhibition of both cytokines (IL17A/F) should result in a greater clinical benefit in AxSpA and PsA than IL17A inhibition alone.
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Practical use of JAK inhibitors in select groups in Axial SpA
A new treatment for AxSpA that has come on the scene are JAK inhibitors. In clinic, considerations for JAKi use are body mass index, smoking status, prior use of biologics and patients with high inflammatory states such as high CRP and inflammatory change on MRI scan of the spine and sacroiliac joints. There are further studies at #ACR22 which help answer these questions.
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ICYMI: Update on Axial SpA at EULAR 2022
This year at EULAR 2022, there were important and interesting topics in Axial Spondyloarthritis (AxSpA). These are my picks of abstracts from the conference.
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Update on Axial SpA at EULAR 2022
This year at EULAR 2022, there were important and interesting topics in Axial Spondyloarthritis (AxSpA). These are my picks of abstracts from the conference.
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Key Psoriatic Arthritis topics and updates at EULAR 2022
At EULAR 2022, I have been looking at topics and presentations in psoriatic arthritis (PsA). Here are my top picks from this year's meeting.
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Updates in Psoriatic Arthritis at EULAR 2022
At EULAR 2022, I look forward to key topics and presentations in psoriatic arthritis (PsA). Here's a preview of nine studies I'm particularly interested in at this meeting.
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New Insights into Uveitis in Spondyloarthritis
Uveitis is the most frequent extra-musculoskeletal manifestation (EAM) in Axial Spondyloarthritis (axSpA). The prevalence of uveitis in axSpA is between 25-30%. Up to 50% of patients with an acute episode of uveitis develop recurrent anterior uveitis or iritis.
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New Insights into Uveitis in Spondyloarthritis
Uveitis is the most frequent extra-musculoskeletal manifestation (EAM) in Axial Spondyloarthritis (axSpA). The prevalence of uveitis in axSpA is between 25-30%. Up to 50% of patients with an acute episode of uveitis develop recurrent anterior uveitis or iritis.
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Axial spondyloarthritis with psoriasis or psoriatic spondylitis
PsA commonly affects peripheral joints. In up to a quarter of PsA patients, the spine may be involved and this is known as psoriatic spondylitis (PsSpA). An important research question is whether PsSpA and Axial Spondyloarthritis (AxSpA) with psoriasis are separate conditions or not.
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