Sustained PASI, DLQI and EQ-5D response of biological treatment in psoriasis: 10 years of real-world data in the Swedish National Psoriasis Register

Summary

Background

Few studies have analysed the long-term effects of biological treatment in psoriasis. PsoReg, the Swedish national register for systemic psoriasis treatment, started in 2006 and includes now ten years of real-world data on effectiveness of biological treatment.

Objective

To analyse long-term real-world outcome data on biological-naïve patients with moderate to severe psoriasis after switching to biological treatment.

Methods

Observational study including biological-naïve patients with at least one registration of outcome before switching to biological treatment while included in PsoReg and at least one follow-up visit. PASI, DLQI and EQ-5D values were analysed at 3-5 months, 6-11 months, and at least once 1 year and above, up to 9 years after switch to biological treatment.

Results

583 patients fulfilled the inclusion criteria. Of these, 399/395/373 patients had observed outcome data beyond one year on PASI/DLQI/EQ-5D, respectively, and 164/168/152 were observed in at least three time periods after switch. Significant (p<0.01) improvement in PASI, DLQI and EQ-5D was observed 3-5 months after switch and sustained under the whole observation period. Mean PASI/DLQI/EQ-5D changed from 13.5 (SD 9.1)/9.0 (SD 8.1)/0.737 (SD 0.222), respectively, before switch, to 4.0 (SD 3.5)/3.7 (SD 4.7)/0.792 (SD 0.208), respectively, 1-5 years after switch.

Conclusion

Biological treatment, as used in clinical practice, show a stable long term effectiveness in all measured dimensions: PASI, DLQI and EQ-5D.

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