Table 1

Summary of clinical and laboratory examination results of two cases with SARS-CoV-2 infection

Sex/ageM/in his early 30sM/52
Primary diseaseMultiple myelomaChronic kidney disease
Prior treatment/dateAnti-BCMA-CAR T
Kidney transplantation 2013/06
Symptoms onset timeJanuary 26January 20
Main symptomsFever, dry coughFever, sore throat, and dry cough
First swab time/results*January 30 (+)January 27 (+)
CRP at disease onset (mg/L)11
WBC/LYM at disease onset (×109/L)3.14/1.424.67/0.38
COVID-19 clinical classification†Moderate to severe to criticalModerate to severe
Cytokine profiles and lymphocyte subsets in severe status
 IL-1β (range: <5.0 pg/mL)<5.0<5.0
 IL-2R (range: 223–710 U/mL)903 ↑670
 IL-6 (range: <7.0 pg/mL)87.51 ↑2.82
 IL-8 (range: <62 pg/mL)<5.012.4
 IL-10 (range: <9.1 pg/mL)<5.0<5.0
 TNF-α (range: <8.1 pg/mL)17.6 ↑6.7
 Ferritin (range: 30–400 µg/L)10308 ↑2534 ↑
Lymphocyte subsets‡
 T Lymphocytes (CD3 +CD19−)
 (range: 27%–51%)
84.43% ↑65.6% ↑
 Helper T cell: CD3 +CD4+ (%)
 (range: 27%–51%)
 Cytotoxic T cell: CD3 +CD8+ (%)
 (range: 15%–44%)
76.56% ↑16.40%
 B Lymphocytes (CD3−CD19+)
 (range: 5%–18%)
0% ↓24.5% ↑
Anti-SARS-CoV-2-IgG (AU/mL)§(−) 0.48(+) 41.51
Anti-SARS-CoV-2-IgM (AU/mL)§(−) 2.97(−) 7.54
  • *RNA was extracted from oropharyngeal swabs of patients using the respiratory sample RNA isolation kit (Xi’an Tianlong Science and Technology Co., China). The reverse-transcription PCR assay (Shanghai Huirui Biotechnology Co., China) of SARS-CoV-2 RNA was conducted to amplify and test two target genes including open reading frame 1ab and nucleocapsid protein. Patients with the cycle threshold value greater than 40 were categorized as positive for the virus.

  • †Clinical classification is re-defined according to the seventh version of New Coronavirus Pneumonia Prevention and Control Program issued by the Chinese National Health Commission.

  • ‡Lymphocyte subsets in peripheral blood were assessed by flow cytometry.

  • §Serological detection of anti-SARS-CoV-2-IgG/IgM was performed by chemiluminescence immunoassay kit (YHLO BIOTECH, China); <10.00 AU/mL was categorized as negative results; ≥10.00 AU/mL was categorized as positive results.

  • BCMA, B-cell maturation antigen; CAR T, chimeric antigen receptor T cells; COVID-19, coronavirus disease 2019; CRP, C-reactive protein; Ig, immunoglobulin; IL, interleukin; LYM, lymphocyte; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2 ; TNF-α, tumor necrosis factor α; WBC, white blood cell.