Lupus Erythematosus Quality of Life Questionnaire (LEQoL): Development and Psychometric Properties

Development of a working core outcome set for cutaneous lupus erythematosus: a practical approach to an urgent unmet need

Objective

The lack of standardised outcomes and outcome measures for cutaneous lupus erythematosus (CLE) represents a substantial barrier to clinical trial design, comparative analysis and approval of novel investigative treatments. We aimed to develop a working core outcome set (COS) for CLE randomised controlled trials and longitudinal observational studies.

Methods

We conducted a multistage literature review of CLE and SLE studies to generate candidate domains and outcome measures. Domains were narrowed to a working core domain set. Outcome measures for core domains were identified and examined.

Results

Proposed core domains include skin-specific disease activity and damage, investigator global assessment (IGA) of disease activity, symptoms (encompassing itch, pain and photosensitivity), health-related quality of life (HRQoL) and patient global assessment (PtGA) of disease activity. Recommended physician-reported outcome measures include the Cutaneous Lupus Erythematous Disease Area and Severity Index (CLASI) and Cutaneous Lupus Activity IGA (CLA-IGA). For the domains of symptoms, HRQoL and PtGA of disease activity, we were unable to recommend one clearly superior instrument.

Conclusion

This work represents a starting point for further refinement pending formal consensus activities and more rigorous evaluations of outcome measure quality. In the interim, the proposed working COS can serve as a much-needed guide for upcoming CLE clinical trials.

Patient-Reported Outcomes in Lupus

Patient-reported outcome (PRO) was identified as a core systemic lupus erythematosus (SLE) outcome in 1999. More than 20 years later, however, generic PRO measures evaluating impact in SLE are used mainly for research. Generic and disease-targeted PRO tools have unique advantages. Significant progress in identification of patient disease-relevant PRO concepts and development of new PRO tools for SLE has occurred over the past 20 years. Further research needs to focus on responsiveness and minimally important differences of existing, promising PRO tools to facilitate their use in SLE patient care and research.