rs138166258

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_030973.4(MED25):​c.1132G>A​(p.Gly378Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000179 in 1,611,086 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G378D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00018 ( 0 hom. )

Consequence

MED25
NM_030973.4 missense

Scores

5
13

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 3.23

Publications

0 publications found
Variant links:
Genes affected
MED25 (HGNC:28845): (mediator complex subunit 25) This gene encodes a component of the transcriptional coactivator complex termed the Mediator complex. This complex is required for transcription of most RNA polymerase II-dependent genes. The encoded protein plays a role in chromatin modification and in preinitiation complex assembly. Mutations in this gene are associated with Charcot-Marie-Tooth disease type 2B2. [provided by RefSeq, Apr 2010]
MED25 Gene-Disease associations (from GenCC):
  • congenital cataract-microcephaly-nevus flammeus simplex-severe intellectual disability syndrome
    Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
  • autosomal recessive non-syndromic intellectual disability
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
  • Charcot-Marie-Tooth disease type 2B2
    Inheritance: AR Classification: SUPPORTIVE, NO_KNOWN Submitted by: ClinGen, Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.05172637).
BS1
Variant frequency is greater than expected in population afr. GnomAdExome4 allele frequency = 0.000177 (258/1458888) while in subpopulation AFR AF = 0.00111 (37/33452). AF 95% confidence interval is 0.000825. There are 0 homozygotes in GnomAdExome4. There are 117 alleles in the male GnomAdExome4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030973.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
MED25
NM_030973.4
MANE Select
c.1132G>Ap.Gly378Ser
missense
Exon 10 of 18NP_112235.2Q71SY5-1
MED25
NM_001378355.1
c.1132G>Ap.Gly378Ser
missense
Exon 10 of 18NP_001365284.1M0QZQ2

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
MED25
ENST00000312865.10
TSL:1 MANE Select
c.1132G>Ap.Gly378Ser
missense
Exon 10 of 18ENSP00000326767.5Q71SY5-1
MED25
ENST00000538643.5
TSL:1
c.493G>Ap.Gly165Ser
missense
Exon 5 of 13ENSP00000437496.1Q71SY5-6
MED25
ENST00000595185.5
TSL:1
c.688+1415G>A
intron
N/AENSP00000470027.1M0QYR4

Frequencies

GnomAD3 genomes
AF:
0.000197
AC:
30
AN:
152080
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000483
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000131
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000118
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000138
AC:
33
AN:
239416
AF XY:
0.000115
show subpopulations
Gnomad AFR exome
AF:
0.000672
Gnomad AMR exome
AF:
0.0000590
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000553
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000177
Gnomad OTH exome
AF:
0.000171
GnomAD4 exome
AF:
0.000177
AC:
258
AN:
1458888
Hom.:
0
Cov.:
33
AF XY:
0.000161
AC XY:
117
AN XY:
725344
show subpopulations
African (AFR)
AF:
0.00111
AC:
37
AN:
33452
American (AMR)
AF:
0.0000675
AC:
3
AN:
44458
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25974
East Asian (EAS)
AF:
0.0000504
AC:
2
AN:
39662
South Asian (SAS)
AF:
0.0000117
AC:
1
AN:
85376
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53076
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5756
European-Non Finnish (NFE)
AF:
0.000188
AC:
209
AN:
1110886
Other (OTH)
AF:
0.0000996
AC:
6
AN:
60248
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.473
Heterozygous variant carriers
0
15
30
45
60
75
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.000197
AC:
30
AN:
152198
Hom.:
0
Cov.:
32
AF XY:
0.000148
AC XY:
11
AN XY:
74410
show subpopulations
African (AFR)
AF:
0.000482
AC:
20
AN:
41528
American (AMR)
AF:
0.000131
AC:
2
AN:
15302
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5178
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4826
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10604
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000118
AC:
8
AN:
67970
Other (OTH)
AF:
0.00
AC:
0
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.503
Heterozygous variant carriers
0
2
4
6
8
10
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000230
Hom.:
0
Bravo
AF:
0.000242
ESP6500AA
AF:
0.000682
AC:
3
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.000165
AC:
20

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Charcot-Marie-Tooth disease type 2 (1)
-
1
-
Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.074
BayesDel_addAF
Benign
-0.24
T
BayesDel_noAF
Benign
-0.23
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Benign
0.26
T
Eigen
Benign
0.00080
Eigen_PC
Benign
0.15
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Benign
0.83
T
M_CAP
Benign
0.057
D
MetaRNN
Benign
0.052
T
MetaSVM
Benign
-0.86
T
MutationAssessor
Benign
0.55
N
PhyloP100
3.2
PrimateAI
Uncertain
0.69
T
PROVEAN
Benign
0.20
N
REVEL
Uncertain
0.33
Sift
Benign
0.096
T
Sift4G
Uncertain
0.053
T
Polyphen
0.53
P
Vest4
0.44
MVP
0.69
MPC
0.39
ClinPred
0.044
T
GERP RS
5.2
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.052
gMVP
0.31
Mutation Taster
=85/15
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.060
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs138166258; hg19: chr19-50334620; COSMIC: COSV100457089; COSMIC: COSV100457089; API