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Table 3 Comparison of the clinical symptoms and neuroimaging presentations between the cases with point mutations and frameshift mutations

From: Distinct clinical, neuroimaging and genetic profiles of late-onset cobalamin C defects (cb1C): a report of 16 Chinese cases

 

Point mutation (n = 9)

Frameshift mutation (n = 7)

χ2

p

psychiatric symptom (+)

2 (22.2)

4 (57.1)

2.05

0.15

psychiatric symptom (—)

7 (77.8)

3 (42.9)

  

cognitive impairment(+)

8 (88.9)

5 (71.4)

0.79

0.38

cognitive impairment(—)

1 (11.1)

2 (28.6)

  

epilepsy(+)

3 (33.3)

3 (42.9)

0.15

0.70

epilepsy(—)

6 (66.7)

4 (57.1)

  

Peripheral nerve(+)

4 (44.4)

1 (14.3)

1.67

0.20

Peripheral nerve(—)

5 (55.6)

6 (85.7)

  

optic nerve damage(+)

1 (11.1)

3 (42.9)

2.12

0.15

optic nerve damage(—)

8 (88.9)

4 (57.1)

  

white matter lesions(+)

3 (33.3)

1 (14.3)

0.76

0.38

white matter lesions(—)

6 (66.7)

6 (85.7)

  

cerebral atrophy(+)

6 (66.7)

5 (71.4)

0.04

0.84

cerebral atrophy(—)

3 (33.3)

2 (28.6)

  

spinal cord lesions(+)

1 (11.1)

0 (0.0)

0.83

0.36

spinal cord lesions(—)

8 (88.9)

7 (100.0)

  

cerebellum lesions(+)

1 (11.1)

1 (14.3)

0.04

0.85

cerebellum lesions(—)

8 (88.9)

6 (85.7)