The IgG2 Isotype of Anti-Transcription Intermediary Factor 1γ Autoantibodies Is a Biomarker of Cancer and Mortality in Adult Dermatomyositis

被引：34

作者：

Aussy, Audrey ^{[1
]}

Freret, Manuel ^{[1
]}

Gallay, Laure ^{[2
]}

Bessis, Didier ^{[3
,4
]}

Vincent, Thierry ^{[3
,5
]}

Jullien, Denis ^{[2
,6
]}

Drouot, Laurent ^{[1
]}

Jouen, Fabienne ^{[1
]}

Joly, Pascal ^{[1
]}

Marie, Isabelle ^{[1
]}

Meyer, Alain ^{[7
,8
]}

Sibilia, Jean ^{[7
,8
]}

Bader-Meunier, Brigitte ^{[9
]}

Hachulla, Eric ^{[10
]}

Hamidou, Mohammed ^{[11
]}

Hue, Sophie ^{[12
]}

Charuel, Jean-Luc ^{[13
]}

Fabien, Nicole ^{[2
]}

Viailly, Pierre-Julien ^{[14
]}

Allenbach, Yves ^{[15
]}

Benveniste, Olivier ^{[15
]}

Cordel, Nadege ^{[1
,16
,17
]}

Boyer, Olivier ^{[1
]}

Amoura, Zahir

Aouizerate, Jessie

Authier, Francois-Jerome

Benhamou, Ygal

Benichou, Jacques

Cherqaoui, Bilade

Chosidow, Olivier

Debarbieux, Sebastien

Fardet, Laurence

Graveleau, Julie

Kahn, Jean-Emmanuel

Langlois, Vincent

Levesque, Herve

Martin, Jerome

Martis, Nihal

Masseau, Agathe

Musset, Lucile

Neel, Antoine

Queyrel-Moranne, Viviane

Terrier, Benjamin

Vinzio, Stephan

机构：

[1] Univ Rouen, Normandy Univ, Rouen Univ Hosp, INSERM U1234, Rouen, France

[2] Edouard Herriot Univ Hosp, Lyon, France

[3] St Eloi Hosp, Montpellier, France

[4] Montpellier Univ Hosp, INSERM U1051, Montpellier, France

[5] Montpellier Univ Hosp, Montpellier, France

[6] Lyon Univ, Lyon, France

[7] Strasbourg Univ Hosp, Strasbourg, France

[8] Ctr Reference Malad Autoimmunes Rares, Strasbourg, France

[9] Necker Univ Hosp, AP HP, Paris, France

[10] Univ Lille, Hosp Claude Huriez, European Reference Network Connect Tissue & Muscu, Lille, France

[11] Hotel Dieu & CHU Nantes, Nantes, France

[12] Henri Mondor Hosp, AP HP, Creteil, France

[13] Pitie Salpetriere Univ Hosp, AP HP, Paris, France

[14] Univ Rouen, Normandy Univ, INSERM U1245, Rouen, France

[15] Pitie Salpetriere Univ Hosp, AP HP, Ctr Reference Malad Neuromusculaires, DHU i2B,INSERM UMRS 974, Paris, France

[16] French West Indies Univ, Pointe A Pitre, Guadeloupe, France

[17] Pointe A Pitre Univ Hosp, Pointe A Pitre, Guadeloupe, France

来源：

ARTHRITIS & RHEUMATOLOGY | 2019年 / 71卷 / 08期

关键词：

IDIOPATHIC INFLAMMATORY MYOPATHIES; CLASSIFICATION CRITERIA; SUBCLASS DISTRIBUTION; CLINICAL-FEATURES; REVISED CRITERIA; ANTIBODIES; MYOSITIS; ASSOCIATION; MALIGNANCY; POLYMYOSITIS;

D O I：

10.1002/art.40895

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Objective Anti-transcription intermediary factor 1 gamma (anti-TIF1 gamma) antibodies are the main predictors of cancer in dermatomyositis (DM). Yet, a substantial proportion of anti-TIF1 gamma-positive DM patients do not develop cancer. This study was undertaken to identify biomarkers to better evaluate the risk of cancer and mortality in DM. Methods This multicenter study was conducted in adult anti-TIF1 gamma-positive DM patients from August 2013 to August 2017. Anti-TIF1 gamma autoantibody levels and IgG subclasses were identified using a newly developed quantitative immunoassay. Age, sex, DM signs and activity, malignancy, and creatine kinase (CK) level were recorded. Risk factors were determined by univariate and multivariate analysis according to a Cox proportional hazards regression model. Results Among the 51 adult patients enrolled (mean +/- SD age 61 +/- 17 years; ratio of men to women 0.65), 40 (78%) had cancer and 21 (41%) died, with a mean +/- SD survival time of 10 +/- 6 months. Detection of anti-TIF1 gamma IgG2 was significantly associated with mortality (P = 0.0011) and occurrence of cancer during follow-up (P < 0.0001), with a 100% positive predictive value for cancer when the mean fluorescence intensity of anti-TIF1 gamma IgG2 was >385. None of the patients developed cancer after 24 months of follow-up. Univariate survival analyses showed that mortality was also associated with age >60 years (P = 0.0003), active DM (P = 0.0042), cancer (P = 0.0031), male sex (P = 0.011), and CK level >1,084 units/liter (P = 0.005). Multivariate analysis revealed that age >60 years (P = 0.015) and the presence of anti-TIF1 gamma IgG2 (P = 0.048) were independently associated with mortality. Conclusion Our findings indicate that anti-TIF1 gamma IgG2 is a potential new biomarker of cancer that should be helpful in identifying the risk of mortality in anti-TIF1 gamma-positive DM patients.

引用

页码：1360 / 1370

页数：11

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