Symptom Information: Sort according to HPO 

1
(HPO:0001254) Lethargy 104 / 7739
2
(HPO:0001263) Global developmental delay 853 / 7739
3
(HPO:0001324) Muscle weakness 859 / 7739
4
(HPO:0001508) Failure to thrive 454 / 7739
5
(HPO:0002093) Respiratory insufficiency 410 / 7739
6
(HPO:0003128) Lactic acidosis 116 / 7739
7
(HPO:0008972) Decreased activity of mitochondrial respiratory chain 34 / 7739
8
(HPO:0011968) Feeding difficulties 240 / 7739
9
(OMIM) Decreasing responsiveness 1 / 7739
10
(OMIM) Neurologic regression 1 / 7739
11
(OMIM) White matter lesions seen on brain imaging 1 / 7739
12
(OMIM) Spongiform degeneration 1 / 7739
13
(OMIM) Astrogliosis 3 / 7739
14
(OMIM) White matter necrosis 1 / 7739
15
(OMIM) Increased serum and urinary lactate 2 / 7739
16
(OMIM) Increased urinary 2-hydroxybutyrate 2 / 7739
17
(OMIM) Increased serum glycine, leucine, isoleucine, valine 2 / 7739
18
(OMIM) Decreased activity of pyruvate dehydrogenase complex 2 / 7739
19
(OMIM) Decreased activity of 2-oxoacid dehydrogenases 2 / 7739