POLG Pathogenicity Prediction Server

1 patient data entry in database for mutations G517V and R722H.

Entry
#

Mutations
allele 1	allele 2

Clinical representation

Symptoms

Age group

Age of onset

Age of patient

Age of death

Reference

424

R722H

G517V2

Onset at 4 months with generalized tonic-clonic seizure, evolved to status epilepticus, treated with valproate, Progressive encephalopathy, and psychomotor development deficient by age 2, mentally retarded, ataxic and hyperkinetic. At the last follow-up visit at age 17 years, he was severely retarded, autistic, and ataxic. During 12 months of valproate treatment serum alanine aminotransferase (ALAT) increased from 29 to 71 U/L (normal < 40 U/L), and after discontinuation of the medication, ALAT values varied between 5 and 12 U/L.

-	status epilepticus

-	encephalopathy

infantile

0.33

n/a

Bolszak et al, 2009;

[view data]

^1-5 pathogenic cluster assignment of mutations. Mutations displayed without a superscript number are outside of the assigned pathogenic clusters. See cluster definitions for details.

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