Identification of a novel compound heterozygote SCO2 mutation in cytochrome c oxidase deficient fatal infantile cardioencephalomyopathy.
Fatal infantile cardioencephalomyopathy (OMIM No. 604377) is a disorder of the mitochondrial respiratory chain and is characterised by neonatal progressive muscular hypotonia and cardiomyopathy because of severe Cytochrome c oxidase deficiency. Here we report a novel mutation in the Cytochrome c oxidase assembly gene SCO2 in an infant with fatal infantile cardioencephalomyopathy despite normal initial metabolic screening.


CONCLUSIONS
In newborns with unexplained muscular hypotonia and cardiomyopathy genetic testing of mitochondrial respiratory chain disorders might be helpful to establish a final diagnosis and guide treatment decisions.
Knuf
M
M
Children's Hospital, Johannes Gutenberg-University, Mainz, Germany.
Faber
J
J
Huth
R G
RG
Freisinger
P
P
Zepp
F
F
Kampmann
C
C
D009202:Cardiomyopathies / Q000235:genetics*; D002352:Carrier Proteins / Q000235:genetics*; D030401:Cytochrome-c Oxidase Deficiency / Q000150:complications / Q000235:genetics*; D017809:Fatal Outcome; D005260:Female; D006579:Heterozygote; D006801:Humans; D007223:Infant; D017237:Mitochondrial Encephalomyopathies / Q000235:genetics*; D024101:Mitochondrial Proteins / Q000235:genetics*; D018832:Molecular Chaperones; D009154:Mutation
D002352:Carrier Proteins; D024101:Mitochondrial Proteins; D018832:Molecular Chaperones; C400285:SCO2 protein, human