Sofia Furtado1,2, Bertrand Dunogué1, Georges Jourdi3,4, Benjamin Chaigne1, Aziza Chibah1, Paul Legendre1, Luc Mouthon1. 1. Service de Médecine Interne, Centre de référence des maladies auto-immunes systémiques rares d'Ile-de-France, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris (AP-HP), Université Paris Descartes, Paris, France. 2. Unidade Funcional de Medicina Interna 1.2, Hospital São José, Centro Hospitalar Universitário Lisboa Central, Lisboa, Portugal. 3. Université de Paris, U1140 Innovative Therapies in Haemostasis, INSERM, Paris, France. 4. Service d'Hématologie Biologique, AP-HP, Hôpital Cochin, Paris, France.
Abstract
Objective: To determine the frequency of elevated D-dimer plasma concentration (>500 ng/mL) in patients with systemic sclerosis and evaluate its association with systemic sclerosis-specific microvascular and macrovascular complications. Methods: Retrospective observational study of patients with systemic sclerosis followed in a tertiary referral center with at least one measurement of D-dimer between 2010 and 2018. Results: A total of 214 patients were analyzed. Mean age at inclusion was 55.1 ± 14.7 years; 180 (84.1%) were female; 74 (34.6%) had diffuse cutaneous systemic sclerosis. Anti-Scl70 and anti-centromere antibodies were positive in 74 (34.6%) and 75 (35.0%) patients, respectively. D-dimer level was elevated in 93 (43.5%) patients, independently of cutaneous subtype (44.6% in diffuse cutaneous systemic sclerosis vs 42.9% in limited cutaneous systemic sclerosis, p = 0.81). At least one microvascular complication was found in 108 (50.5%) patients: 105 (49.1%) with previous or current digital ulcers, 6 (2.8%) with renal crisis, and 4 (1.9%) with pulmonary arterial hypertension. Microvascular complications were more frequent in patients with elevated D-dimer (57.0% vs 45.5%, p = 0.09), significantly so after exclusion of patients with a history of cancer and/or venous thromboembolism (60.5% vs 44.8%, p = 0.04). Macrovascular complications were detected in 15 (7.0%) patients and were associated with a high D-dimer level (11.8% vs 3.3%, p = 0.03). Over a median follow-up of 2.3 years [1.1-3.3] after D-dimer measurement, new macrovascular complications occurred only in patients with high D-dimer (n = 8). Conclusion: High D-dimer levels are frequently found in systemic sclerosis patients and seem to be associated with the occurrence of macrovascular and microvascular complications after adjustment for confounding factors.
Objective: To determine the frequency of elevated D-dimer plasma concentration (>500 ng/mL) in patients with systemic sclerosis and evaluate its association with systemic sclerosis-specific microvascular and macrovascular complications. Methods: Retrospective observational study of patients with systemic sclerosis followed in a tertiary referral center with at least one measurement of D-dimer between 2010 and 2018. Results: A total of 214 patients were analyzed. Mean age at inclusion was 55.1 ± 14.7 years; 180 (84.1%) were female; 74 (34.6%) had diffuse cutaneous systemic sclerosis. Anti-Scl70 and anti-centromere antibodies were positive in 74 (34.6%) and 75 (35.0%) patients, respectively. D-dimer level was elevated in 93 (43.5%) patients, independently of cutaneous subtype (44.6% in diffuse cutaneous systemic sclerosis vs 42.9% in limited cutaneous systemic sclerosis, p = 0.81). At least one microvascular complication was found in 108 (50.5%) patients: 105 (49.1%) with previous or current digital ulcers, 6 (2.8%) with renal crisis, and 4 (1.9%) with pulmonary arterial hypertension. Microvascular complications were more frequent in patients with elevated D-dimer (57.0% vs 45.5%, p = 0.09), significantly so after exclusion of patients with a history of cancer and/or venous thromboembolism (60.5% vs 44.8%, p = 0.04). Macrovascular complications were detected in 15 (7.0%) patients and were associated with a high D-dimer level (11.8% vs 3.3%, p = 0.03). Over a median follow-up of 2.3 years [1.1-3.3] after D-dimer measurement, new macrovascular complications occurred only in patients with high D-dimer (n = 8). Conclusion: High D-dimer levels are frequently found in systemic sclerosis patients and seem to be associated with the occurrence of macrovascular and microvascular complications after adjustment for confounding factors.
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