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Mutation Query
Allele 1:P587L, T251I
Allele 2: R1142G, W748S

Allelic information known

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2515877481142
Residue T251
Cluster assignment:
SNP
Cluster description:Single Nucleotide Polymorphism
POLG domain:Exonuclease domain
Residue P587
Cluster assignment:
Cluster 2
Cluster description:Upstream DNA binding channel
Subcluster:2C (residues 561-617)
Subcluster description:Subcluster 2C contains motif 1, which in Pol I was shown to fold into a loop that binds DNA in the channel (Loh and Loeb, 2005). Motif 1, together with subcluster 2D, form the major face of the putative DNA binding channel.
POLG domain:Spacer domain
Residue W748
Cluster assignment:
Cluster 5
Cluster description:Putative protein-protein interactions
Subcluster:5B (residues 737-749)
Subcluster description:Located in the periphery of the IP subdomain of the spacer domain, distant from the DNA binding channel
POLG domain:Spacer domain
Residue R1142
Cluster assignment:
SNP
Cluster description:Single Nucleotide Polymorphism
POLG domain:Polymerase domain
Mutation Information
P587L
Number of patients:

(with P587L)

53
Found together with:
Non-allelic
9
T251I
9
P587L
9
G848S
8
R807P
6
W748S
6
A467T
6
PNF
4
R227W
4
R232G
4
H932Y
%
Also:
K1191R (4%) L304R (4%) D1184N (4%)
P116Q (4%) C224Y (2%) N864S (2%)
K1191N (2%) V1106I (2%) E1136K (2%)
M603L (2%) P648R (2%) N1157S (2%)
R853Q (2%) R869Q (2%) E1142G (2%)
R309L (2%)
Allelic
98
T251I
2
P589L
%

PNF=Putatively Non-Functional enzyme

Show Patient Data
T251I
Number of patients:

(with T251I)

53
Found together with:
Non-allelic
11
G848S
9
T251I
9
P587L
8
R807P
6
A467T
6
PNF
4
R227W
4
R232G
4
H932Y
4
K1191R
%
Also:
W748S (4%) L304R (4%) D1184N (4%)
P116Q (4%) C224Y (2%) N864S (2%)
K1191N (2%) V1106I (2%) E1136K (2%)
M603L (2%) P648R (2%) N1157S (2%)
R853Q (2%) R869Q (2%) E1142G (2%)
R309L (2%)
Allelic
98
P587L
%

PNF=Putatively Non-Functional enzyme

Show Patient Data
R1142G
The database does not contain this specific mutation. See residue 1142 details
W748S
Number of patients:

(with W748S)

181
Found together with:
Non-allelic
38
W748S
24
A467T
21
E1143G
10
G848S
4
PNF
4
T914P
3
R852C
2
G11D
2
P587L
1
T251I
%
Also:
S28C (1%) R953C (1%) R627W (1%)
Q497H (1%) L244P (1%) L304R (1%)
P589L (1%) R807C (1%) D930N (1%)
R852H (1%) H1110Y (1%) Q1236H (1%)
G888D (1%) G737R (1%) L752P (1%)
P1073L (1%) R232H (1%) R722H (1%)
R1096C (1%) A143V (1%) E1163G (1%)
R993C (1%) R869X (1%) V1106A (1%)
I1185N (1%)
Allelic
48
E1143G
4
Q497H
1
K561M
1
E1142G
%

PNF=Putatively Non-Functional enzyme

Show Patient Data
Database patient data is inconclusive about the dominant status of mutation W748S.

See full list of putatively-dominant POLG mutations

Database patient data suggest that T251I is a known SNP.This mutation is unlikely to cause a POLG-related syndrome.

See full list of known POLG SNPs.

The following information is based on existing patient data and pathogenic cluster assignment.

Pathogenicity information for a patient with mutation P587L and a cluster W748S mutation:
Age of onset information is extracted from a total of 2 patients and/ or patient families.
Age of onset
2-
1-
0
0
0
2
infantilechildhdjuvenileadult
0%0%0%100%
All mutations mapping within the pathogenic clusters are at high risk for pathogenicity. In general, a patient must have a pathogenic mutation in both of his/ her POLG genes to develop a POLG-related syndrome.
Symptoms described in patients with P587L-W748S mutations
Symptoms described in patients with cluster2-cluster5 mutations
Prediction results for T251I gene1, SNP (not considered for pathogenicity information)
Prediction results for R1142G gene2, SNP (not considered for pathogenicity information)
New Mutation Query
Type in POLG mutations:
Allele 1:Allele 2:
Allelic information known
Allelic information not known
Example input: A467T T914P
Mutations in the same allele can be separated with a comma
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