Table 3.

Criteria for TMA in patients with MIS-C, minimal COVID-19, and severe COVID-19

IDAge, yOther conditionsElevated LDHSchistocytesLow plateletsAnemiaHTNProtein in urineElevated sC5b9Met criteria for TMA?No. of criterion
Minimal COVID-19 
 13 Sickle cell disease ✓ ✓ ✓ ✓ ✓   Yes 
 38 17 Obesity, asthma ✓  ✓  ✓ ✓ ✓ Yes 
Summary: fraction (%) 2/2 (100) 1/2 (50) 2/2 (100) 1/2 (50) 2/2 (100) 1/2 (50) 1/2 (50) 2/2 (100)  
Severe COVID-19 
 10 10 Panhypopituitarism ✓ ✓ ✓ ✓  ✓ ✓ Yes 
 33 15 Obesity, PCOS ✓ ✓  ✓ ✓  ✓ Yes 
 37 15 Obesity ✓ ✓  ✓ ✓ ✓ ✓ Yes 
 4 18 Obesity, hypertension, diabetes mellitus ✓ ✓ ✓ ✓ ✓ ✓ ✓ Yes 
 Summary: fraction (%) 4/4 (100) 4/4 (100) 2/4 (67) 4/4 (100) 3/4 (75) 3/4 (75) 4/4 (100) 4/4 (100)  
MIS-C 
 19 Previously healthy  ✓ ✓ ✓ ✓ ✓ ✓ Yes 
 22 Previously healthy ✓ ✓  ✓ ✓ ✓ ✓ Yes 
 18 Previously healthy ✓ ✓ ✓ ✓ ✓ ✓ ✓ Yes 
 24 Previously healthy ✓ ✓ ✓ ✓ ✓  ✓ Yes 
 29 Asthma ✓ ✓   ✓ ✓ ✓ Yes 
 44 Previously healthy ✓ ✓  ✓ ✓  ✓ Yes 
 55 Precocious puberty ✓  ✓ ✓ ✓ ✓ ✓ Yes 
 28 Previously healthy  ✓ ✓ ✓ ✓  ✓ Yes 
 50 Previously healthy ✓ ✓ ✓ ✓ ✓ ✓ ✓ Yes 
 48 11 Previously healthy ✓ ✓  ✓  ✓ ✓ Yes 
 26 13 Previously healthy  ✓ ✓ ✓ ✓ ✓  Yes 
 27 14 Previously healthy  ✓ ✓ ✓   ✓ No 
 51 17 Asthma  ✓  ✓  ✓ ✓ No 
 Summary: fraction (%) 8/13(61) 12/13 (92) 8/13(61) 12/13 (92) 10/13 (76) 9/13 (69) 12/13 (92) 11/13 (85)  
IDAge, yOther conditionsElevated LDHSchistocytesLow plateletsAnemiaHTNProtein in urineElevated sC5b9Met criteria for TMA?No. of criterion
Minimal COVID-19 
 13 Sickle cell disease ✓ ✓ ✓ ✓ ✓   Yes 
 38 17 Obesity, asthma ✓  ✓  ✓ ✓ ✓ Yes 
Summary: fraction (%) 2/2 (100) 1/2 (50) 2/2 (100) 1/2 (50) 2/2 (100) 1/2 (50) 1/2 (50) 2/2 (100)  
Severe COVID-19 
 10 10 Panhypopituitarism ✓ ✓ ✓ ✓  ✓ ✓ Yes 
 33 15 Obesity, PCOS ✓ ✓  ✓ ✓  ✓ Yes 
 37 15 Obesity ✓ ✓  ✓ ✓ ✓ ✓ Yes 
 4 18 Obesity, hypertension, diabetes mellitus ✓ ✓ ✓ ✓ ✓ ✓ ✓ Yes 
 Summary: fraction (%) 4/4 (100) 4/4 (100) 2/4 (67) 4/4 (100) 3/4 (75) 3/4 (75) 4/4 (100) 4/4 (100)  
MIS-C 
 19 Previously healthy  ✓ ✓ ✓ ✓ ✓ ✓ Yes 
 22 Previously healthy ✓ ✓  ✓ ✓ ✓ ✓ Yes 
 18 Previously healthy ✓ ✓ ✓ ✓ ✓ ✓ ✓ Yes 
 24 Previously healthy ✓ ✓ ✓ ✓ ✓  ✓ Yes 
 29 Asthma ✓ ✓   ✓ ✓ ✓ Yes 
 44 Previously healthy ✓ ✓  ✓ ✓  ✓ Yes 
 55 Precocious puberty ✓  ✓ ✓ ✓ ✓ ✓ Yes 
 28 Previously healthy  ✓ ✓ ✓ ✓  ✓ Yes 
 50 Previously healthy ✓ ✓ ✓ ✓ ✓ ✓ ✓ Yes 
 48 11 Previously healthy ✓ ✓  ✓  ✓ ✓ Yes 
 26 13 Previously healthy  ✓ ✓ ✓ ✓ ✓  Yes 
 27 14 Previously healthy  ✓ ✓ ✓   ✓ No 
 51 17 Asthma  ✓  ✓  ✓ ✓ No 
 Summary: fraction (%) 8/13(61) 12/13 (92) 8/13(61) 12/13 (92) 10/13 (76) 9/13 (69) 12/13 (92) 11/13 (85)  

Criteria for TMA as defined by Gloude et al.27  Meeting at least 5 of the 7 criteria are required to meet definition. Protein in urine defined as random urine protein measurement ≥30 mg/dL or urine protein/creatinine ratio ≥2 mg/mg. Hypertension defined as >99th percentile for age, height, and sex. Check marks indicate that the criterion was met; blank spaces indicate that the criterion was not met.

B-ALL, B-cell acute lymphoblastic leukemia; HTN, hypertension; PCOS, polycystic ovarian syndrome.

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