POS1312 ANALYSIS OF INTERFERON TYPE I SIGNATURE IN JUVENILE DERMATOMYOSITIS
Background the crucial role of hyperactivation IFN I signaling pathway has been proved in the pathogenesis of dermatomyositis. IFN I genes and chemokines activity vary according to subtype of inflammatory myopathies. IFN type 1 signature could be measured using different genes in the blood, skin and...
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crjcrbmj:10.1136/annrheumdis-2022-eular.3292 2024-02-11T10:08:16+01:00 POS1312 ANALYSIS OF INTERFERON TYPE I SIGNATURE IN JUVENILE DERMATOMYOSITIS Raupov, R. Suspitsin, E. Mulkidzhan, R. Kostik, M. 2022 http://dx.doi.org/10.1136/annrheumdis-2022-eular.3292 https://syndication.highwire.org/content/doi/10.1136/annrheumdis-2022-eular.3292 en eng BMJ Annals of the Rheumatic Diseases volume 81, issue Suppl 1, page 993.3-994 ISSN 0003-4967 1468-2060 General Biochemistry, Genetics and Molecular Biology Immunology Immunology and Allergy Rheumatology journal-article 2022 crjcrbmj https://doi.org/10.1136/annrheumdis-2022-eular.3292 2024-01-26T10:14:09Z Background the crucial role of hyperactivation IFN I signaling pathway has been proved in the pathogenesis of dermatomyositis. IFN I genes and chemokines activity vary according to subtype of inflammatory myopathies. IFN type 1 signature could be measured using different genes in the blood, skin and muscle tissue [1]. Objectives to evaluate IFN-score in children with dermatomyositis and compare with disease activity Methods 15 patients (5 boys and 10 girls) were enrolled in the study. Clinical and laboratory parameters, disease activity (CMAS-childhood myositis assessment tool, aCAT- abbreviated cutaneous assessment tool) and treatment were assessed. Patients were compared accordingly to IFN-score elevation. IFN I-score was assessed by RT-PCR quantitation of 5 IFN I-regulated transcripts (IFI44L, IFI44, IFIT3, LY6E, MXA1); median relative expression of ≥ 2 was considered as a cut-off. IFN I-score was evaluated in dynamics in 9 patients. Results median age of patients was 6.2 (3.6; 7.6) years. Skin and muscle involvement were in all patients, arthritis in 5 (33%) patients, calcinosis in 3 (20%), lipodystrophy in 2 (13%) and lung involvement in 5 patients (33%), and 9 patients (60%) had positive myositis-related antibodies. Ten patients (67%) had an active disease, while elevated IFN-signature was detected in 12 (80%) patients. Cumulative IFN I-score and its’ five components were higher in active patients, compare to inactive (13.6 vs 1.4, p=0.006). Patients with increased IFN I-score had lower CMAS score and higher aCAT score compare to patients with normal levels of IFN I-score. IFN-I score correlated with aCAT, arthritis and lung involvement. Conclusion IFN-I score may be considered as disease activity biomarker in juvenile dermatomyositis with predominantly skin activity process. References [1]Rigolet M, Hou C, Baba Amer Y, Aouizerate J, Periou B, Gherardi RK et al. Distinct interferon signatures stratify inflammatory and dysimmune myopathies. RMD Open. 2019 Feb 26;5(1):e000811. doi: ... Article in Journal/Newspaper Rigolet The BMJ Rigolet ENVELOPE(-58.430,-58.430,54.180,54.180) Annals of the Rheumatic Diseases 81 Suppl 1 993.3 994 |
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The BMJ |
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crjcrbmj |
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General Biochemistry, Genetics and Molecular Biology Immunology Immunology and Allergy Rheumatology |
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General Biochemistry, Genetics and Molecular Biology Immunology Immunology and Allergy Rheumatology Raupov, R. Suspitsin, E. Mulkidzhan, R. Kostik, M. POS1312 ANALYSIS OF INTERFERON TYPE I SIGNATURE IN JUVENILE DERMATOMYOSITIS |
topic_facet |
General Biochemistry, Genetics and Molecular Biology Immunology Immunology and Allergy Rheumatology |
description |
Background the crucial role of hyperactivation IFN I signaling pathway has been proved in the pathogenesis of dermatomyositis. IFN I genes and chemokines activity vary according to subtype of inflammatory myopathies. IFN type 1 signature could be measured using different genes in the blood, skin and muscle tissue [1]. Objectives to evaluate IFN-score in children with dermatomyositis and compare with disease activity Methods 15 patients (5 boys and 10 girls) were enrolled in the study. Clinical and laboratory parameters, disease activity (CMAS-childhood myositis assessment tool, aCAT- abbreviated cutaneous assessment tool) and treatment were assessed. Patients were compared accordingly to IFN-score elevation. IFN I-score was assessed by RT-PCR quantitation of 5 IFN I-regulated transcripts (IFI44L, IFI44, IFIT3, LY6E, MXA1); median relative expression of ≥ 2 was considered as a cut-off. IFN I-score was evaluated in dynamics in 9 patients. Results median age of patients was 6.2 (3.6; 7.6) years. Skin and muscle involvement were in all patients, arthritis in 5 (33%) patients, calcinosis in 3 (20%), lipodystrophy in 2 (13%) and lung involvement in 5 patients (33%), and 9 patients (60%) had positive myositis-related antibodies. Ten patients (67%) had an active disease, while elevated IFN-signature was detected in 12 (80%) patients. Cumulative IFN I-score and its’ five components were higher in active patients, compare to inactive (13.6 vs 1.4, p=0.006). Patients with increased IFN I-score had lower CMAS score and higher aCAT score compare to patients with normal levels of IFN I-score. IFN-I score correlated with aCAT, arthritis and lung involvement. Conclusion IFN-I score may be considered as disease activity biomarker in juvenile dermatomyositis with predominantly skin activity process. References [1]Rigolet M, Hou C, Baba Amer Y, Aouizerate J, Periou B, Gherardi RK et al. Distinct interferon signatures stratify inflammatory and dysimmune myopathies. RMD Open. 2019 Feb 26;5(1):e000811. doi: ... |
format |
Article in Journal/Newspaper |
author |
Raupov, R. Suspitsin, E. Mulkidzhan, R. Kostik, M. |
author_facet |
Raupov, R. Suspitsin, E. Mulkidzhan, R. Kostik, M. |
author_sort |
Raupov, R. |
title |
POS1312 ANALYSIS OF INTERFERON TYPE I SIGNATURE IN JUVENILE DERMATOMYOSITIS |
title_short |
POS1312 ANALYSIS OF INTERFERON TYPE I SIGNATURE IN JUVENILE DERMATOMYOSITIS |
title_full |
POS1312 ANALYSIS OF INTERFERON TYPE I SIGNATURE IN JUVENILE DERMATOMYOSITIS |
title_fullStr |
POS1312 ANALYSIS OF INTERFERON TYPE I SIGNATURE IN JUVENILE DERMATOMYOSITIS |
title_full_unstemmed |
POS1312 ANALYSIS OF INTERFERON TYPE I SIGNATURE IN JUVENILE DERMATOMYOSITIS |
title_sort |
pos1312 analysis of interferon type i signature in juvenile dermatomyositis |
publisher |
BMJ |
publishDate |
2022 |
url |
http://dx.doi.org/10.1136/annrheumdis-2022-eular.3292 https://syndication.highwire.org/content/doi/10.1136/annrheumdis-2022-eular.3292 |
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ENVELOPE(-58.430,-58.430,54.180,54.180) |
geographic |
Rigolet |
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Rigolet |
genre |
Rigolet |
genre_facet |
Rigolet |
op_source |
Annals of the Rheumatic Diseases volume 81, issue Suppl 1, page 993.3-994 ISSN 0003-4967 1468-2060 |
op_doi |
https://doi.org/10.1136/annrheumdis-2022-eular.3292 |
container_title |
Annals of the Rheumatic Diseases |
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81 |
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Suppl 1 |
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993.3 |
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994 |
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1790607311937470464 |