rs143148835

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_030973.4(MED25):​c.247C>G​(p.Gln83Glu) variant causes a missense change. The variant allele was found at a frequency of 0.000253 in 1,614,120 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. Q83H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00026 ( 0 hom. )

Consequence

MED25
NM_030973.4 missense

Scores

7
11

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 7.05

Publications

3 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 -2 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.24180326).

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.247C>Gp.Gln83Glu
missense
Exon 3 of 18NP_112235.2Q71SY5-1
MED25
NM_001378355.1
c.247C>Gp.Gln83Glu
missense
Exon 3 of 18NP_001365284.1M0QZQ2

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
MED25
ENST00000312865.10
TSL:1 MANE Select
c.247C>Gp.Gln83Glu
missense
Exon 3 of 18ENSP00000326767.5Q71SY5-1
MED25
ENST00000595185.5
TSL:1
c.247C>Gp.Gln83Glu
missense
Exon 3 of 7ENSP00000470027.1M0QYR4
MED25
ENST00000538643.5
TSL:1
c.180+622C>G
intron
N/AENSP00000437496.1Q71SY5-6

Frequencies

GnomAD3 genomes
AF:
0.000138
AC:
21
AN:
152254
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.0000941
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000265
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.000183
AC:
46
AN:
251442
AF XY:
0.000177
show subpopulations
Gnomad AFR exome
AF:
0.0000615
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000924
Gnomad NFE exome
AF:
0.000360
Gnomad OTH exome
AF:
0.000326
GnomAD4 exome
AF:
0.000265
AC:
387
AN:
1461866
Hom.:
0
Cov.:
33
AF XY:
0.000275
AC XY:
200
AN XY:
727232
show subpopulations
African (AFR)
AF:
0.0000896
AC:
3
AN:
33480
American (AMR)
AF:
0.0000224
AC:
1
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39698
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86258
European-Finnish (FIN)
AF:
0.000150
AC:
8
AN:
53408
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.000327
AC:
364
AN:
1111998
Other (OTH)
AF:
0.000182
AC:
11
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.498
Heterozygous variant carriers
0
21
42
64
85
106
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:
0.000138
AC:
21
AN:
152254
Hom.:
0
Cov.:
33
AF XY:
0.000134
AC XY:
10
AN XY:
74382
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41468
American (AMR)
AF:
0.00
AC:
0
AN:
15292
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5196
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.0000941
AC:
1
AN:
10628
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.000265
AC:
18
AN:
68048
Other (OTH)
AF:
0.000478
AC:
1
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.494
Heterozygous variant carriers
0
1
2
3
4
5
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:
0.000227
Hom.:
0
Bravo
AF:
0.000110
TwinsUK
AF:
0.000539
AC:
2
ALSPAC
AF:
0.000259
AC:
1
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.000198
AC:
24
EpiCase
AF:
0.000109
EpiControl
AF:
0.000415

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 (1)
-
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
0.27
BayesDel_addAF
Benign
-0.22
T
BayesDel_noAF
Benign
-0.20
CADD
Pathogenic
27
DANN
Uncertain
0.99
DEOGEN2
Benign
0.068
T
Eigen
Uncertain
0.63
Eigen_PC
Uncertain
0.61
FATHMM_MKL
Uncertain
0.92
D
LIST_S2
Uncertain
0.96
D
M_CAP
Benign
0.032
D
MetaRNN
Benign
0.24
T
MetaSVM
Benign
-1.2
T
MutationAssessor
Benign
1.6
L
PhyloP100
7.0
PrimateAI
Uncertain
0.70
T
PROVEAN
Benign
-0.68
N
REVEL
Benign
0.15
Sift
Benign
0.18
T
Sift4G
Uncertain
0.010
D
Polyphen
0.98
D
Vest4
0.80
MVP
0.60
MPC
1.1
ClinPred
0.12
T
GERP RS
5.4
Varity_R
0.24
gMVP
0.56
Mutation Taster
=20/80
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
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: rs143148835; hg19: chr19-50322495; API