Table 1.

Demographic and clinical characteristics of the reanalysis cohort.

Age at enrollment	Median: 5 months; range 0.1–238 months
	<1 month	10 (21%)
	<6 months	27 (56%)
Age at reanalysisa	Median: 24 months; range 0.1–255 months
	<6 month	4 (8%)
	<24 months	23 (49%)
Sex	Female	23 (48%)
	Male	25 (52%)
Race and ethnicity	Hispanic/Latino	24 (50%)
	Caucasian	14 (29%)
	Asian/Pacific Islander	3 (6%)
	African/African American	2 (4%)
	Other/unknown	5 (10%)
Primary system involved	Neurological	13 (27%)
	Multiple congenital anomalies	12 (25%)
	Hepatic	6 (13%)
	Hematological	5 (10%)
	Musculoskeletal	3 (6%)
	Pulmonary	3 (6%)
	Cardiac	2 (4%)
	Endocrine/biochemical	2 (4%)
	Gastrointestinal	2 (4%)

^aOr at the age of exitus.