Malignancy in dermatomyositis: A retrospective study of 201 patients seen at the University of Pennsylvania - 19/06/20
Abstract |
Background |
There is an increased incidence of malignancy in patients with dermatomyositis. It is unknown if the risk differs between the subtypes of dermatomyositis.
Objective |
To (1) compare the prevalence of malignancy-associated dermatomyositis between patients with classic and clinically amyopathic disease and (2) determine factors associated with an increased risk of malignancy-associated disease.
Methods |
Retrospective cohort study of 201 patients with adult-onset dermatomyositis prospectively enrolled in a longitudinal dermatomyositis database between July 2008 and April 2018 at an outpatient dermatology urban tertiary referral center. The main outcome measure was a diagnosis of malignancy, excluding nonmelanoma skin cancer.
Results |
There were 201 patients with adult-onset dermatomyositis: 142 (71%) classic and 59 (29%) clinically amyopathic. Within 2 years of diagnosis, the prevalences of malignancy-associated classic and clinically amyopathic dermatomyositis were 9.9% and 1.7%, respectively. In this time period, patients who were older at dermatomyositis diagnosis (P = .01) and had the classic subtype (P = .04) were significantly more likely to have an underlying malignancy on multivariable regression analysis.
Limitations |
This was a retrospective study of prospectively collected data at a single tertiary referral center.
Conclusion |
Older age and classic dermatomyositis are independent risk factors for malignancy-associated dermatomyositis within 2 years of disease onset.
Il testo completo di questo articolo è disponibile in PDF.Key words : connective tissue disease, dermatomyositis, malignancy, medical dermatology, paraneoplastic
Abbreviations used : ANA, CADM, CDM, CI, DM, ETDM, IRB, MA, MA-CADM, MA-CDM, MA-DM, NXP-2, OR
Mappa
| Funding sources: Supported by the US Department of Veterans Affairs (Veterans Health Administration, Office of Research and Development and Biomedical Laboratory Research and Development). |
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| Conflicts of interest: None disclosed. |
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| IRB approval status: Reviewed and approved by the University of Pennsylvania IRB (approval no. 829890). |
Vol 83 - N° 1
P. 117-122 - luglio 2020 Ritorno al numero
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