Samuel Govea-Peláez, Jonathan Campos-Guzmán, Roberta Demichelis-Gómez, Christianne Bourlon, Deshire Alpizar-Rodríguez, Javier Merayo-Chalico, Ana Barrera-Vargas
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引用次数: 0
Abstract
Objective: To develop a score for a diagnosis of cytopenias from systemic lupus erythematosus (SLE) activity and determine the usefulness of bone marrow aspirate and biopsy (BMA/BMB) in this population.
Methods: We conducted a cohort study focusing on patients with SLE who underwent BMA/BMB as part of the evaluation for cytopenias. Etiology of cytopenias was categorized into SLE activity, drug-associated toxicity, and other diagnoses. We devised a scoring system, incorporating 5 factors, which were chosen and weighed based on their relative odds ratios on the analyzed models.
Results: A total of 115 patients were enrolled; 84.4% were women, and median age was 31 years (interquartile range [IQR], 23-42). Diagnoses for cytopenias were as follows: SLE activity in 47 patients (40.9%), drug-associated toxicity in 35 patients (30.4%), and other diagnoses in 33 patients (28.7%). Patients with SLE activity exhibited higher Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) scores (p = 0.009) and anti-dsDNA levels (p = 0.017). To enhance the diagnostic approach for patients with cytopenias secondary to disease activity, we introduced a scoring system with 5 variables: performing BMA/BMB due to suspected activity, absence of severe neutropenia, absence of azathioprine treatment, articular activity, and SLEDAI-2K score >6. The area under the curve was determined to be 0.85, indicating a sensitivity of 87.2% and a specificity of 70.5% when the cutoff value was set to ≥4.5 points.
Conclusion: Disease activity and drug-associated toxicity are the main causes of cytopenias in SLE patients. We developed a scoring system with acceptable diagnostic performance to detect disease activity as the cause of cytopenias in patients with SLE.
期刊介绍:
JCR: Journal of Clinical Rheumatology the peer-reviewed, bimonthly journal that rheumatologists asked for. Each issue contains practical information on patient care in a clinically oriented, easy-to-read format. Our commitment is to timely, relevant coverage of the topics and issues shaping current practice. We pack each issue with original articles, case reports, reviews, brief reports, expert commentary, letters to the editor, and more. This is where you''ll find the answers to tough patient management issues as well as the latest information about technological advances affecting your practice.