Journal of Tropical Diseases and Parasitology ›› 2024, Vol. 22 ›› Issue (5): 271-276.doi: 10.20199/j.issn.1672-2302.2024.05.004

• SPECIAL TOPICS ON SEVERE FEVER WITH THROMBOCYTOPENIA SYNDROME • Previous Articles     Next Articles

Clinical observation of faveravir for severe fever with thrombocytopenia syndrome

PENG Junxia1(), WANG Xin1, YANG Jiayue1, SU Qian2()   

  1. 1 The First Clinical Medical College (First Affiliated Hospital), Anhui Medical University, Hefei 230032, Anhui Province, China
    2 Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University
  • Received:2024-09-18 Online:2024-10-20 Published:2024-11-15
  • Contact: SU Qian, E-mail: suqian@ahmu.edu.cn

Abstract:

Objective To clarify the clinical efficacy and adverse reactions of faveravir in the treatment of patients with severe fever with thrombocytopenia syndrome (SFTS). Methods The clinical data were collected from March 2023 to August 2024 in SFTS cases confirmed by laboratory studies and treated in the Department of Infectious Diseases and the Intensive Care Unit of the First Affiliated Hospital of Anhui Medical University. The cases were divided into faveravir treatment group (treatment group) and non-faveravir treatment group (control group) based on whether they received faveravir medication during their hospitalization. The propensity score matching method (PSM) was used to conduct cluster matching of other factors except whether-they-received-faveravir-treatment between the two groups at a ratio of 1∶1. Comparative analysis was performed on the 28-day survival rate of the two groups after successful matching and the average survival time of deceased patients. Then the influencing factors of the 28-day survival period were analyzed using Cox regression. Results Among the 272 laboratory-confirmed cases collected, 111 were in the treatment group and 161 were in the control group. Of these cases, there were 65 deaths, with a case fatality rate of 23.90%. Five indicators, including the age, C-reaction protein (CRP), D-dimer, fibrin degradation products (FDP), and the nucleic acid load of Bandavirus dabieense, were identified as covariates for PSM. After matching, 108 patients from each group were included in the study. The 28-day survival rates of the treatment group and the control group after matching were 85.19% (92/108) and 78.70% (85/108), respectively. Log-rank test revealed no significant difference (χ2=1.900, P>0.05). There were 16 and 23 deaths respectively in the treatment group and control group, and the average survival time was 6.5 (3.0,9.0) and 2.0 (1.0, 5.0) days. The difference was statistically significant (Z=2.824, P<0.01). The results of Cox regression analysis indicated that the use of faveravir was a protective factor for patient survival [HR=0.534, 95%CI: (0.267, 1.068)], while increased age [HR=1.044, 95%CI: (1.004, 1.085)], elevated serum amylase [HR=1.003, 95%CI: (1.001, 1.005)], the use of glucocorticoids [HR=2.243, 95%CI: (1.093, 4.602)], and the presence of consciousness disturbance were risk factors for patient survival [HR=11.548, 95%CI: (4.786, 27.861)]. The tolerance was overall acceptable in the 111 patients who received faveravir, and the adverse reactions were relatively fewer. Cvonclusion Faveravir for the treatment of SFTS can prolong the survival period of patients and has few adverse reactions, which is an effective antiviral therapy.

Key words: Severe fever with thrombocytopenia syndrome, Bandavirus dabieense, Favravir, Treatment

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