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Chinese SLE Treatment and Research group (CSTAR) registry: Clinical significance of thrombocytopenia in Chinese patients with systemic lupus erythematosus


Autoři: N. Jiang aff001;  M. Li aff001;  M. Zhang aff002;  J. Xu aff003;  L. Jiang aff004;  L. Gong aff005;  F. Wu aff006;  J. Gu aff007;  J. Zhao aff001;  Y. Xiang aff001;  Z. Wang aff001;  Y. Zhao aff001;  X. Zeng aff001
Působiště autorů: Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China aff001;  Department of Rheumatology, Jiangsu Provincial People's Hospital, Nanjing, Jiangsu, China aff002;  Department of Rheumatology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China aff003;  Department of Rheumatology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, China aff004;  Department of Rheumatology, the General Hospital of Tianjin Medical University, Tianjin, China aff005;  Department of Rheumatology, Capital Institute of Pediatrics, Beijing, China aff006;  Department of Rheumatology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China aff007
Vyšlo v časopise: PLoS ONE 14(11)
Kategorie: Research Article
doi: https://doi.org/10.1371/journal.pone.0225516

Souhrn

Objectives

To investigate the prevalence, clinical characteristics, and prognosis of thrombocytopenia (TP) in Chinese patients with systemic lupus erythematosus (SLE).

Methods

The study was conducted based on the Chinese SLE Treatment and Research group (CSTAR) registry. Thrombocytopenia was defined as the platelet count<100,000/mm3 at enrollment. Severe thrombocytopenia was defined as the platelet count<50,000/mm3. The prevalence of SLE-related TP, the associations of thrombocytopenia with demographic data, organ involvements, laboratory findings, disease activity, damage, and mortality were investigated.

Results

Of 2104 patients with SLE, 342 patients (16.3%) were diagnosed with thrombocytopenia. The prevalence of neuropsychiatric SLE, vasculitis, myositis, nephritis, mucocutaneous lesions, pleuritis, fever, leukocytopenia and hypocomplementemia were significantly higher in patients with thrombocytopenia (p<0.05). SLE disease activity index (SLEDAI) was significantly higher in patients with thrombocytopenia (p<0.05). Multivariate analysis showed that leukocytopenia (OR = 2.644), lupus nephritis (OR = 1.539), hypocomplementemia (OR = 1.497) and elevated SLEDAI (OR = 1.318) were independently associated with thrombocytopenia (p<0.05). Long disease duration (OR = 1.006) was an independent risk factor of severe thrombocytopenia, while anti-rRNP (OR = 0.208) was an independent protective factor of severe thrombocytopenia (p<0.05). Long disease duration was an independent risk factor of mortality in patients with thrombocytopenia (RR = 1.006). The 6-year survival of patients with thrombocytopenia was significantly lower than patients without thrombocytopenia (88.2% vs. 95.5%).

Conclusions

Thrombocytopenia was a common manifestation of SLE and was associated with leukocytopenia, nephritis and severe disease activity. Severe thrombocytopenia tended to occur in long-term and relatively inactive SLE. Patients with SLE-related thrombocytopenia has a decreased long-term survival rate. Long disease duration was an independent risk factor of mortality in patients with thrombocytopenia.

Klíčová slova:

Chinese people – Medical risk factors – Nephritis – Platelets – Prognosis – Thrombocytopenia


Zdroje

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