COMBINED OXIDATIVE PHOSPHORYLATION DEFICIENCY 18

General Information (adopted from Orphanet):

Synonyms, Signs: COXPD18
Number of Symptoms 11
OrphanetNr:
OMIM Id: 615578
ICD-10:
UMLs:
MeSH:
MedDRA:
Snomed:

Prevalence, inheritance and age of onset:

Prevalence: No data available.
Inheritance: Autosomal recessive
[Omim]
Age of onset:

Disease classification (adopted from Orphanet):

Parent Diseases: No data available.

Symptom Information: Sort by abundance 

1
(HPO:0000505) Visual impairment 297 / 7739
2
(HPO:0001310) Dysmetria 76 / 7739
3
(HPO:0001337) Tremor 200 / 7739
4
(HPO:0000750) Delayed speech and language development 197 / 7739
5
(HPO:0001249) Intellectual disability 1089 / 7739
6
(HPO:0001511) Intrauterine growth retardation 358 / 7739
7
(HPO:0001972) Macrocytic anemia rare [HPO:skoehler] 26 / 7739
8
(HPO:0003128) Lactic acidosis 116 / 7739
9
(HPO:0002151) Increased serum lactate 92 / 7739
10
(HPO:0003202) Skeletal muscle atrophy 281 / 7739
11
(HPO:0001252) Muscular hypotonia 990 / 7739

Associated genes:

SFXN4;

ClinVar (via SNiPA)

Gene symbol Variation Clinical significance Reference

Additional Information:

Description: (OMIM) Combined oxidative phosphorylation deficiency-18 is an autosomal recessive disorder of mitochondrial function characterized by intrauterine growth retardation, hypotonia, visual impairment, speech delay, and lactic acidosis associated with decreased mitochondrial respiratory chain activity. Affected patients may also show hematologic ...
Clinical Description OMIM Hildick-Smith et al. (2013) reported a 14-year-old Italian girl with mitochondrial disease and macrocytic erythroid abnormalities. She showed intrauterine growth retardation and poor postnatal growth. Mitochondrial abnormalities became apparent soon after birth, with increased serum lactate, ammonia, and ...
Molecular genetics OMIM In 2 unrelated patients with combined oxidative phosphorylation deficiency, Hildick-Smith et al. (2013) identified homozygous or compound heterozygous mutations in the SFXN4 gene (615564.0001-615564.0003). Expression of wildtype SFXN4 restored the mitochondrial respiratory defect in patient cells.