Infection and Drug Resistance (Sep 2022)

Metagenomic Next-Generation Sequencing in the Diagnosis of Infectious Fever During Myelosuppression Among Pediatric Patients with Hematological and Neoplastic Diseases

  • Fu Y,
  • Zhu X,
  • Cao P,
  • Shen C,
  • Qian X,
  • Miao H,
  • Yu Y,
  • Wang H,
  • Zhai X

Journal volume & issue
Vol. Volume 15
pp. 5425 – 5434

Abstract

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Yang Fu, Xiaohua Zhu, Ping Cao, Chen Shen, Xiaowen Qian, Hui Miao, Yi Yu, Hongsheng Wang, Xiaowen Zhai Department of Hematology, National Children’s Medical Center Children’s Hospital of Fudan University, Shanghai, People’s Republic of ChinaCorrespondence: Hongsheng Wang; Xiaowen Zhai, Department of Hematology, National Children’s Medical Center Children’s Hospital of Fudan University, 399 Wanyuan Road, Shanghai, 201102, People’s Republic of China, Tel +86 21 64931123, Fax +86 21 64931901, Email [email protected]; [email protected]: To analyze the contribution of metagenomic next-generation sequencing (mNGS) in the guidance of clinical treatment and outcomes of infection during myelosuppression among children with hematological and neoplastic diseases.Patients and Methods: The clinical data and results of mNGS assay of febrile patients suspected of infection were retrospectively collected. The characteristics of pathogenic microorganisms and clinical course of myelosuppressed children with hematological diseases were summarized.Results: Our study included 70 patients (45 males) with a median age of 5 years (range: 0.5 to 13 y). During the study period, there were 96 events of suspected infection. According to comprehensive clinical diagnosis, 73 blood infections, 43 pneumonia and 2 urinary tract infections occurred. The positive rate of mNGS was significantly higher than that of traditional microbial detection (83.3% vs 17.7%). The main pathogens detected by mNGS were Pseudomonas aeruginosa, Acinetobacter, human herpesvirus, Candida and Aspergillus. The average duration of fever was 4.9 days and 11.6 days (P < 0.05), and the average cost of anti-infection treatment was RMB ¥ 28,077 and 39,898 (P < 0.05) among children received mNGS within 48 hours and more than 48 hours after the onset of infection symptoms.Conclusion: mNGS contributes to clinical management of children with infection during myelosuppression, especially among patients with negative traditional microbial detection. Early implementation of mNGS in children with symptoms has a tendency to reduce the time of infection, fever and the cost of treatment.Keywords: metagene, pathogenic microorganism, child, hematology and oncology

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