TOPLINE:
An earlier diagnosis of psoriatic arthritis (PsA) following symptom onset increases the likelihood of achieving improved clinical outcomes, highlighting the presence of a diagnostic window of opportunity in PsA.
METHODOLOGY:
A diagnostic delay in PsA leads to increased joint erosions and functional impairment; however, whether a “window of opportunity” ( 1 year (n=335).The groups were compared for clinical (Minimal Disease Activity [MDA] and Disease Activity index for Psoriatic Arthritis [DAPSA] remission) and patient-reported outcomes during 3 years of follow-up.
TAKEAWAY:
The probability of achieving MDA was higher in patients with a short vs long diagnostic delay (odds ratio [OR], 2.55; 95% CI, 1.37-4.76).Compared with patients in the long diagnostic delay group, those in the short (OR, 2.35; 95% CI, 1.32-4.19) and intermediate (OR, 1.94; 95% CI, 1.19-3.15) diagnostic delay groups were more likely to achieve DAPSA remission.Compared with patients in the long diagnostic delay group, those in the short (estimated mean difference [Δ], −1.09; 95% CI, −1.88 to −0.30) or intermediate (Δ, −0.85; 95% CI, −1.50 to −0.19) groups had slightly less tender joints.
IN PRACTICE:
“A delay of> 1 year is associated with worse clinical outcomes, which includes almost 50% of the PsA population” in this study, wrote the authors, adding that for better long-term outcomes, “it is important that PsA patients are diagnosed by a rheumatologist within 1 year after symptom onset.”
SOURCE:
This study, led by Selinde V.J. Snoeck Henkemans, MD, of the department of rheumatology at Erasmus University Medical Center, Rotterdam, The Netherlands, was published online February 27, 2024, in RMD Open.
LIMITATIONS:
The study’s dropout rates (25%-31% across groups) may have influenced the findings. Patients with a long diagnostic delay might have dropped out owing to treatment dissatisfaction, and those with a short or intermediate delay might have dropped out due to inactive disease.
DISCLOSURES:
This study did not declare any specific source of funding. The authors declared no conflicts of interest.
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