Genetic Variant MED25:p.Glu33Val (chr19-49818439-A-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_030973.4(MED25):c.98A>T(p.Glu33Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 152,058 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E33G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Consequence

MED25
NM_030973.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.62

Publications

1 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

MED25 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.786

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MED25	NM_030973.4 link	c.98A>T	p.Glu33Val	missense_variant	Exon 1 of 18	ENST00000312865.10	NP_112235.2	Q71SY5-1
MED25	NM_001378355.1 link	c.98A>T	p.Glu33Val	missense_variant	Exon 1 of 18		NP_001365284.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MED25	ENST00000312865.10 link	c.98A>T	p.Glu33Val	missense_variant	Exon 1 of 18	1	NM_030973.4	ENSP00000326767.5		Q71SY5-1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152058

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152058

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74302

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41382

American (AMR)

AF:

0.00

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.000207

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67998

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.87

BayesDel_addAF

Pathogenic

0.35

BayesDel_noAF

Pathogenic

0.27

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.15

.;.;T;T;D;.;.;.;.

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.58

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.97

D;D;D;D;D;D;D;D;.

M_CAP

Pathogenic

0.79

MetaRNN

Pathogenic

0.79

D;D;D;D;D;D;D;D;D

MetaSVM

Uncertain

0.31

MutationAssessor

Benign

1.9

.;.;.;.;L;.;L;.;.

PhyloP100

7.6

PrimateAI

Pathogenic

0.86

PROVEAN

Uncertain

-4.0

.;.;.;.;D;.;D;.;.

REVEL

Uncertain

0.33

Sift

Uncertain

0.0070

.;.;.;.;D;.;D;.;.

Sift4G

Uncertain

0.036

D;D;T;D;D;D;D;D;D

Polyphen

1.0

.;.;.;.;D;.;.;.;.

Vest4

0.79

MutPred

0.34

Loss of ubiquitination at K37 (P = 0.045);Loss of ubiquitination at K37 (P = 0.045);Loss of ubiquitination at K37 (P = 0.045);Loss of ubiquitination at K37 (P = 0.045);Loss of ubiquitination at K37 (P = 0.045);Loss of ubiquitination at K37 (P = 0.045);Loss of ubiquitination at K37 (P = 0.045);Loss of ubiquitination at K37 (P = 0.045);Loss of ubiquitination at K37 (P = 0.045);

MVP

0.75

MPC

1.3

ClinPred

1.0

GERP RS

4.6

PromoterAI

0.028

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.60

gMVP

0.68

Mutation Taster

=29/71

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

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

Publications

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chr19-49818439-A-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over