rs74863643

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_030973.4(MED25):​c.234C>G​(p.Pro78Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0132 in 1,614,180 control chromosomes in the GnomAD database, including 906 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. P78P) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.036 ( 224 hom., cov: 33)
Exomes 𝑓: 0.011 ( 682 hom. )

Consequence

MED25
NM_030973.4 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -2.85

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: Ambry Genetics, Orphanet, G2P, 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: Orphanet, ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.73).
BP6
Variant 19-49819225-C-G is Benign according to our data. Variant chr19-49819225-C-G is described in ClinVar as Benign. ClinVar VariationId is 329878.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-2.85 with no splicing effect.
BA1
GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.134 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
MED25NM_030973.4 linkc.234C>G p.Pro78Pro synonymous_variant Exon 3 of 18 ENST00000312865.10 NP_112235.2 Q71SY5-1
MED25NM_001378355.1 linkc.234C>G p.Pro78Pro synonymous_variant Exon 3 of 18 NP_001365284.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
MED25ENST00000312865.10 linkc.234C>G p.Pro78Pro synonymous_variant Exon 3 of 18 1 NM_030973.4 ENSP00000326767.5 Q71SY5-1

Frequencies

GnomAD3 genomes
AF:
0.0359
AC:
5460
AN:
152230
Hom.:
223
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0775
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0772
Gnomad ASJ
AF:
0.00518
Gnomad EAS
AF:
0.143
Gnomad SAS
AF:
0.0279
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00633
Gnomad NFE
AF:
0.00156
Gnomad OTH
AF:
0.0306
GnomAD2 exomes
AF:
0.0310
AC:
7803
AN:
251418
AF XY:
0.0274
show subpopulations
Gnomad AFR exome
AF:
0.0793
Gnomad AMR exome
AF:
0.0744
Gnomad ASJ exome
AF:
0.00536
Gnomad EAS exome
AF:
0.156
Gnomad FIN exome
AF:
0.0000924
Gnomad NFE exome
AF:
0.00153
Gnomad OTH exome
AF:
0.0181
GnomAD4 exome
AF:
0.0108
AC:
15822
AN:
1461832
Hom.:
682
Cov.:
33
AF XY:
0.0106
AC XY:
7691
AN XY:
727214
show subpopulations
African (AFR)
AF:
0.0806
AC:
2700
AN:
33478
American (AMR)
AF:
0.0761
AC:
3402
AN:
44722
Ashkenazi Jewish (ASJ)
AF:
0.00417
AC:
109
AN:
26136
East Asian (EAS)
AF:
0.122
AC:
4827
AN:
39698
South Asian (SAS)
AF:
0.0240
AC:
2068
AN:
86256
European-Finnish (FIN)
AF:
0.0000749
AC:
4
AN:
53408
Middle Eastern (MID)
AF:
0.00745
AC:
43
AN:
5768
European-Non Finnish (NFE)
AF:
0.00126
AC:
1400
AN:
1111974
Other (OTH)
AF:
0.0210
AC:
1269
AN:
60392
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.470
Heterozygous variant carriers
0
990
1979
2969
3958
4948
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
286
572
858
1144
1430
<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:
0.0360
AC:
5480
AN:
152348
Hom.:
224
Cov.:
33
AF XY:
0.0386
AC XY:
2873
AN XY:
74506
show subpopulations
African (AFR)
AF:
0.0777
AC:
3228
AN:
41570
American (AMR)
AF:
0.0775
AC:
1186
AN:
15310
Ashkenazi Jewish (ASJ)
AF:
0.00518
AC:
18
AN:
3472
East Asian (EAS)
AF:
0.143
AC:
742
AN:
5190
South Asian (SAS)
AF:
0.0277
AC:
134
AN:
4830
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10628
Middle Eastern (MID)
AF:
0.00340
AC:
1
AN:
294
European-Non Finnish (NFE)
AF:
0.00156
AC:
106
AN:
68030
Other (OTH)
AF:
0.0308
AC:
65
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.500
Heterozygous variant carriers
0
262
524
785
1047
1309
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
60
120
180
240
300
<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:
0.00336
Hom.:
1
Bravo
AF:
0.0434
Asia WGS
AF:
0.0730
AC:
252
AN:
3478
EpiCase
AF:
0.00267
EpiControl
AF:
0.00284

ClinVar

Significance: Benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2
Mar 03, 2015
GeneDx
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Charcot-Marie-Tooth disease Benign:1
-
Molecular Genetics Laboratory, London Health Sciences Centre
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Charcot-Marie-Tooth disease type 2 Benign:1
Feb 03, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.73
CADD
Benign
1.8
DANN
Benign
0.79
PhyloP100
-2.9
Mutation Taster
=100/0
polymorphism (auto)

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: rs74863643; hg19: chr19-50322482; API