Symptom Information: Sort according to HPO 

1
(HPO:0001305) Dandy-Walker malformation Very frequent [Orphanet] 79 / 7739
2
(HPO:0003198) Myopathy Very frequent [Orphanet] 151 / 7739
3
(HPO:0001252) Muscular hypotonia Very frequent [Orphanet] 990 / 7739
4
(HPO:0001324) Muscle weakness 859 / 7739
5
(HPO:0000256) Macrocephaly Very frequent [Orphanet] 298 / 7739
6
(HPO:0001355) Megalencephaly 39 / 7739
7
(HPO:0004482) Relative macrocephaly 44 / 7739
8
(HPO:0000238) Hydrocephalus Very frequent [Orphanet] 278 / 7739
9
(HPO:0001263) Global developmental delay 853 / 7739
10
(HPO:0001928) Abnormality of coagulation 44 / 7739
11
(HPO:0003236) Elevated serum creatine phosphokinase 214 / 7739
12
(HPO:0008947) Infantile muscular hypotonia 482 / 7739
13
(HPO:0010547) Muscle flaccidity 466 / 7739
14
(OMIM) Prolonged activated partial prothrombin time (aPPT) 1 / 7739
15
(OMIM) Abnormal serum transferrin pattern by isoelectric focusing (hyposialylation) 1 / 7739
16
(HPO:0000007) Autosomal recessive inheritance 2538 / 7739