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Table 7 Clinical and biochemical data in relation to neurological outcome

From: Urea cycle disorders in Spain: an observational, cross-sectional and multicentric study of 104 cases

 

N

With neurological impairment % (N)

Without neurological impairment % (N)

p

Disease

OTC

65

44.6 (29, 7males)

55.4 (36, 17 males)

0.043*

ASS

21

66.7 (14)

33.4 (7)

 

ASL

10

80 (8)

20 (2)

 

CPS1

2

100 (2)

0

 

ARG1

2

0

2 (100)

 

NAGS

1

0

1 (100)

 

Presentation

Neonatal

24

75 (18)

25 (6)

0.002*

Late

64

51.6 (33)

48.4 (31)

 

Asymptomatic

13

15.4 (2)

84.6 (11)

 

Hepatic failure at diagnosis

Yes

17

82.3 (14)

17.7 (3)

0.005*

No

82

45.1 (37)

54.9 (45)

 

Laboratory test at diagnosis

 

Median (IQR)

Median (IQR)

 

Ammonia (μmol/L)

92

400 (200-690)

174 (67.2-270)

< 0.001**

Glutamine (μmol/L)

77

1126 (891-1672)

917 (751-1196)

0.019**

  1. Neurological outcome was correlated with the type of UCD disease, type of presentation, presence of liver failure at onset and ammonia and glutamine level at diagnosis. The level of statistical significance was obtained using Pearson chi-square* for qualitative variables and the Mann-Whitney U test** for quantitative variables.