Symptom Information: Sort according to HPO 

1
(HPO:0001874) Abnormality of neutrophils Frequent [Orphanet] 47 / 7739
2
(HPO:0001875) Neutropenia 83 / 7739
3
(HPO:0001873) Thrombocytopenia Frequent [Orphanet] 224 / 7739
4
(HPO:0003220) Abnormality of chromosome stability Very frequent [Orphanet] 98 / 7739
5
(HPO:0001903) Anemia Very frequent [Orphanet] 289 / 7739
6
(HPO:0001888) Lymphopenia Frequent [Orphanet] 43 / 7739
7
(HPO:0000153) Abnormality of the mouth 60 / 7739
8
(HPO:0000737) Irritability 93 / 7739
9
(HPO:0001249) Intellectual disability 1089 / 7739
10
(HPO:0001251) Ataxia 413 / 7739
11
(HPO:0002066) Gait ataxia 327 / 7739
12
(HPO:0002311) Incoordination 84 / 7739
13
(HPO:0001254) Lethargy 104 / 7739
14
(HPO:0001324) Muscle weakness 859 / 7739
15
(HPO:0001508) Failure to thrive 454 / 7739
16
(HPO:0001876) Pancytopenia 89 / 7739
17
(HPO:0001896) Reticulocytopenia 12 / 7739
18
(HPO:0001972) Macrocytic anemia 26 / 7739
19
(HPO:0001980) Megaloblastic bone marrow 5 / 7739
20
(HPO:0002013) Vomiting 191 / 7739
21
(HPO:0002014) Diarrhea 225 / 7739
22
(HPO:0002720) IgA deficiency 33 / 7739
23
(HPO:0002850) IgM deficiency 18 / 7739
24
(HPO:0004315) IgG deficiency 38 / 7739
25
(HPO:0012120) Methylmalonic aciduria 20 / 7739
26
(MedDRA:10028124) Mucosal ulceration 1 / 7739
27
(OMIM) Decreased IgG 5 / 7739
28
(OMIM) Normal serum cobalamin 7 / 7739
29
(OMIM) Normal serum folate 2 / 7739
30
(OMIM) Reduced unsaturated serum cobalamin binding capacity 1 / 7739
31
(OMIM) Abnormal Schilling test (not normalized by addition of intrinsic factor) 1 / 7739
32
(OMIM) Transcobalamin II deficiency 1 / 7739
33
(HPO:0001939) Abnormality of metabolism/homeostasis Very frequent [Orphanet] 328 / 7739
34
(HPO:0010701) Abnormal immunoglobulin level Frequent [Orphanet] 49 / 7739
35
(HPO:0000007) Autosomal recessive inheritance 2538 / 7739