RT Journal Article SR Electronic T1 Quality of Life in Adult Patients With SAPHO Syndrome and Chronic Nonbacterial Osteomyelitis, and Comparison to Chronic Rheumatic and Inflammatory Diseases JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1034 OP 1042 DO 10.3899/jrheum.2025-0414 VO 52 IS 10 A1 Lenert, Aleksander A1 Thomason, Jenna A1 Smith, Melanie H. A1 Abodeely, Helena A1 Hong, Sandy D. A1 Kremer, Courtney E. A1 Lenert, Petar S. A1 Sato, T. Shawn A1 Hansmann, Sandra A1 Oliver, Melissa A1 Zhao, Yongdong (Dan) A1 Templin, Jonathan A1 Vaughan-Sarrazin, Mary A1 Domsic, Robyn A1 Solomon, Daniel H. A1 Ferguson, Polly J. YR 2025 UL http://www.jrheum.org/content/52/10/1034.abstract AB Objective The health effects of SAPHO (synovitis, acne, pustulosis, hyperostosis, and osteitis) syndrome and chronic nonbacterial osteomyelitis (CNO) have not been well studied. We assessed health-related quality of life (HRQOL) in adults with SAPHO-CNO and performed a review of EQ-5D questionnaire outcomes among similar chronic rheumatic and inflammatory diseases.Methods We enrolled patients in the first US-based SAPHO-CNO prospective registry and assessed their HRQOL using the EQ-5D index and EQ-5D visual analog scale (VAS). A focused scoping review was performed of EQ-5D–related outcomes among disease cohorts with phenotypic similarities to SAPHO-CNO.Results In the 138 participants with SAPHO-CNO, mean age was 37.7 (SD 15.0) years with a mean disease duration of 6.4 (SD 6.2) years. All subjects had musculoskeletal involvement (with 43% having spine involvement) and 46% had skin involvement. Mean 5-level EQ-5D index value was 0.75 (SD 0.16) and mean EQ-VAS was 63.0 (SD 21.0). Most patients were affected by pain/discomfort (86%), difficulty in carrying out usual activities (65%), and anxiety/depression (54%); over one-third reported problems in all 5 EQ-5D domains. These adults with SAPHO-CNO had similarly reduced EQ-5D and VAS values, and similar high proportion of perceived problems, as in other inflammatory disease cohorts.Conclusion The HRQOL among adults with SAPHO-CNO is low, with more than half of patients experiencing greater impact on perceived pain, difficulty performing usual activities, and feelings of anxiety or depression. Future therapies should address the multidimensional nature of SAPHO-CNO, targeting HRQOL as a major outcome.