PMID- 31577217 OWN - NLM STAT- MEDLINE DCOM- 20200403 LR - 20220609 IS - 0392-856X (Print) IS - 0392-856X (Linking) VI - 38 IP - 2 DP - 2020 Mar-Apr TI - Does psoriatic axial spondyloarthritis phenotype correlate with imaging morphotype? PG - 329-332 LID - 10.55563/clinexprheumatol/8qh84l [doi] AB - OBJECTIVES: To compare the magnetic resonance imaging (MRI) morphology of inflammatory and chronic lesions in the sacroiliac joints (SIJs) and spine between patients with non-psoriatic and psoriatic non-radiographic axial spondyloarthritis (axSpA and p-axSpA, respectively). METHODS: Patients from the EMBARK trial (NCT01258738) with axSpA (n=179) and p-axSpA (n=24) who had MRI data available were compared in terms of baseline demographics, clinical characteristics, and the frequency (n/N [%]) and distribution of inflammatory and structural SIJ and spinal lesions. RESULTS: Patients with p-axSpA were on average older (35.1 years vs. 31.7 years, p=0.047), had a higher occurrence of asymmetric sacroiliitis (54.2% vs. 29.6%, p=0.042), and a lower occurrence of human leukocyte antigen (HLA)-B27 positivity (41.7% vs. 73.7%, p=0.010) than patients with axSpA. There were no significant differences in the frequency of lesions in any of the SIJ or spinal quadrants between the two subgroups. CONCLUSIONS: These data suggest that differences between axSpA and p-axSpA extend beyond presence of psoriasis, and include age, SI symmetry, and HLAB27 status. These findings may help explain the morphotype-phenotype relationship across axSpA, similar to those described in older radiographic studies. FAU - Gensler, Lianne S AU - Gensler LS AD - University of California, San Francisco, CA, USA. lianne.gensler@ucsf.edu. FAU - Szumski, Annette AU - Szumski A AD - Syneos Health, Collegeville, PA, USA. FAU - Jones, Heather E AU - Jones HE AD - Pfizer, Collegeville, PA, USA. FAU - Baraliakos, Xenofon AU - Baraliakos X AD - Ruhr University, Rheumazentrum Ruhrgebiet Herne, Bochum, Germany. LA - eng PT - Journal Article DEP - 20191001 PL - Italy TA - Clin Exp Rheumatol JT - Clinical and experimental rheumatology JID - 8308521 RN - 0 (HLA-B27 Antigen) SB - IM MH - Adult MH - Female MH - HLA-B27 Antigen/*analysis/blood MH - Humans MH - Magnetic Resonance Imaging/methods MH - Male MH - Phenotype MH - Sacroiliac Joint/pathology MH - *Sacroiliitis/diagnostic imaging/immunology/pathology MH - *Spondylarthritis/diagnostic imaging/immunology/pathology EDAT- 2019/10/03 06:00 MHDA- 2020/04/04 06:00 CRDT- 2019/10/03 06:00 PHST- 2019/03/08 00:00 [received] PHST- 2019/07/08 00:00 [accepted] PHST- 2019/10/03 06:00 [pubmed] PHST- 2020/04/04 06:00 [medline] PHST- 2019/10/03 06:00 [entrez] AID - 14071 [pii] AID - 10.55563/clinexprheumatol/8qh84l [doi] PST - ppublish SO - Clin Exp Rheumatol. 2020 Mar-Apr;38(2):329-332. doi: 10.55563/clinexprheumatol/8qh84l. Epub 2019 Oct 1.