Session Information
Session Type: ACR Poster Session C
Session Time: 9:00AM-11:00AM
Background/Purpose: arthritis, myositis and interstitial lung disease (ILD) are
reported in up to 90% of patients affected by antisynthetase syndrome (ASSD)
and thus represent the most common manifestations of this rare condition.
Arthritis presentation ranges from symmetrical polyarthritis to
oligoarticular/asymmetrical arthritis. IgM-rheumatoid factor (RF) and
anti-cyclic citrullinated peptide antibodies (ACPA) may be positive, and joint
erosions mat be observed at plain radiographs of hands and feet. On this basis,
in ASSD differential diagnosis with rheumatoid arthritis (RA) may be challenging.
Arthritis may occur at disease onset, with or without myositis and/or ILD, or
during the follow-up. The aim of this multicenter, international, retrospective
study was to assess whether in ASSD the timing and the cluster of onset with
other typical disease manifestations may influence arthritis characteristics
Methods: anti Jo-1 positive patients presenting with arthritis (joints swelling
and tenderness required) were included in the study. Clinical, radiology and
laboratory characteristics of arthritis and the occurrence of myositis and ILD,
were retrospectively reviewed. Patients were divided in 3 groups: Group 1)
isolated arthritis at disease onset, Group 2) arthritis associated with myositis
and/or ILD at disease onset, Group 3) arthritis occurrence after disease onset
Results: the starting cohort included 252 anti Jo-1 positive ASSD. Arthritis was identified
in 186 (74%) cases and it was mainly polyarticular and symmetrical (120, 65%).
The remaining patients (64, 36%) had an oligoarticular/asymmetrical arthritis.
RF-IgM was positive in 54/154 patients tested (30%). ACPA were positive in 19/139
patients tested (14%). Hands and feet plain radiographs were available in 179
patients, in 39 cases (22%) with evidence of erosions. Anti Ro antibodies were
positive in 102/180 patients tested (57%). Patients’ characteristics and
statistical significances between groups are shown in table 1. Symmetrical
polyarthritis was the main pattern of presentation in all groups. Ig-M RF
positive and joint erosions were less common in patients without arthritis at
disease onset (Group 3) than in those presenting with isolated arthritis (Group
1). ACPA and joint erosions were more common in Group 1 than in Group 2
Conclusion: in anti Jo-1 positive ASSD, the timing and the cluster of
appearance influence arthritis features. According to our findings, heterogeneity
within the clinical spectrum of arthritis is one of the main characteristics of
anti Jo-1 positive ASSD. Typical RA features are more common at disease onset
and in patients presenting with isolated arthritis
References
Cavagna L, et al. Ann Rheum Dis 2015;74(S2):
601
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Group 1 : isolated arthriris at disease onset |
Group 2: arthritis associated with myositis and/or ILD at disease onset |
Group 3: arthritis occurrence after disease onset ^ |
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Number (% of total) |
60 (32) |
97 (52) |
29 (16) |
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Median age in years at disease onset (IQR) |
54.5 (43-62.5) |
53 (43-61) |
52 (39.5-66.5) |
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p=0.824 µ |
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Median follow-up in months (IQR) |
86.5 (60-150) |
75 (32.5-132) |
130 (66-225) |
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p=0.007 µ |
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reference |
p=0.075* |
p=0.079* |
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Males/females |
13/47 |
25/72 |
6/23 |
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p=0.774 |
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Symmetrical polyarthritis (% of subset) |
41 (68) |
61 (63) |
17 (59) |
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p=0.636 |
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IgM-RF positive/patients checked (% of subset) |
24/59 (41) |
26/93 (28) |
4/29 (14) |
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p=0.023 |
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reference |
p=0.147 |
p=0.030 |
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ACPA positive/patients checked (% of subset) |
13/49 (26.5) |
5/71 (7) |
1/19 |
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p=0.005 |
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reference |
p=0.007 |
p=0.107 |
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Joint erosions/patients checked (% of subset) |
20/59 (34) |
16/92 (17) |
3/28 (11) |
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p=0.013 |
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reference |
p=0.024 |
p=0.042 |
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Anti-Ro positive/patients checked (% of subset) |
29/60 (48) |
58/91 (64) |
15/29 (52) |
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p=0.147 |
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Table 1: different characteristics of patients according to arthritis timing of onset and cluster with other manifestions. Legend: ILD= interstitial lung disease; IQR= interquartile range; RF= rheumatoid factor; ACPA= anti-cyclic citrullinated peptide antibodies. Statistical analysis: µ Kruskal Wallis, * Mann-Whitney test, other Chi-square test. ^ median time to arthritis appearance from disease onset in Group 3: 14 months (Interquartile range 6-32). |
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To cite this abstract in AMA style:
Sifuentes Giraldo A, Scirè CA, Castañeda S, Nuño L, Lopez Longo FJ, Martínez-Barrio J, Franceschini F, Cavazzana I, Airò P, Bartoloni Bocci E, Bachiller Corral J, Neri R, Barsotti S, Caporali R, Montecucco C, Govoni M, La Corte R, Furini F, Iannone F, Giannini M, Fusaro E, Parisi S, Paolazzi G, Barausse G, Pellerito R, Russo A, Saketkoo LA, Ortego-Centeno N, Quartuccio L, Specker C, Schwarting A, Triantafyllias K, Selmi C, Salaffi F, Cimmino MA, Iuliano A, Conti F, Baiocchi G, Bravi E, Codullo V, Ghirardello A, Pina T, Gonzalez-Gay MA, Cavagna L. Timing of Onset and Cluster with Other Manifestations Influence the Spectrum of Arthritis in Anti Jo-1 Positive Antisynthetase Syndrome: Results from a Multicenter, International, Retrospective Study [abstract]. Arthritis Rheumatol. 2015; 67 (suppl 10). https://acrabstracts.org/abstract/timing-of-onset-and-cluster-with-other-manifestations-influence-the-spectrum-of-arthritis-in-anti-jo-1-positive-antisynthetase-syndrome-results-from-a-multicenter-international-retrospective-study/. Accessed .« Back to 2015 ACR/ARHP Annual Meeting
ACR Meeting Abstracts - https://acrabstracts.org/abstract/timing-of-onset-and-cluster-with-other-manifestations-influence-the-spectrum-of-arthritis-in-anti-jo-1-positive-antisynthetase-syndrome-results-from-a-multicenter-international-retrospective-study/