NM_005120.3:c.2259G>A

Variant names:

Variant summary

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

The NM_005120.3(MED12):c.2259G>A(p.Arg753Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0032 in 1,208,506 control chromosomes in the GnomAD database, including 71 homozygotes. There are 992 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.018 ( 37 hom., 513 hem., cov: 21)

Exomes 𝑓: 0.0017 ( 34 hom. 479 hem. )

Consequence

MED12
NM_005120.3 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 0.710

Publications

2 publications found

Variant links:

Genes affected

MED12 (HGNC:11957): (mediator complex subunit 12) The initiation of transcription is controlled in part by a large protein assembly known as the preinitiation complex. A component of this preinitiation complex is a 1.2 MDa protein aggregate called Mediator. This Mediator component binds with a CDK8 subcomplex which contains the protein encoded by this gene, mediator complex subunit 12 (MED12), along with MED13, CDK8 kinase, and cyclin C. The CDK8 subcomplex modulates Mediator-polymerase II interactions and thereby regulates transcription initiation and reinitation rates. The MED12 protein is essential for activating CDK8 kinase. Defects in this gene cause X-linked Opitz-Kaveggia syndrome, also known as FG syndrome, and Lujan-Fryns syndrome. [provided by RefSeq, Aug 2009]

MED12 Gene-Disease associations (from GenCC):

FG syndrome 1
Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet
MED12-related intellectual disability syndrome
Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
X-linked intellectual disability with marfanoid habitus
Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet
blepharophimosis - intellectual disability syndrome, MKB type
Inheritance: XL Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
cholestasis-pigmentary retinopathy-cleft palate syndrome
Inheritance: XL Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)

MED12 links:

ENSG00000228427 (HGNC:):

ENSG00000228427 links:

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=-0.51).

BP6

Variant X-71125383-G-A is Benign according to our data. Variant chrX-71125383-G-A is described in ClinVar as Benign. ClinVar VariationId is 129590.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.71 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0591 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MED12	NM_005120.3 link	c.2259G>A	p.Arg753Arg	synonymous_variant	Exon 16 of 45	ENST00000374080.8	NP_005111.2	Q93074-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MED12	ENST00000374080.8 link	c.2259G>A	p.Arg753Arg	synonymous_variant	Exon 16 of 45	1	NM_005120.3	ENSP00000363193.3		Q93074-1

Frequencies

GnomAD3 genomes

AF:

0.0179

AC:

1977

AN:

110404

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0616

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00812

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000389

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000170

Gnomad OTH

AF:

0.0149

GnomAD2 exomes

AF:

0.00478

AC:

867

AN:

181266

AF XY:

0.00283

show subpopulations

Gnomad AFR exome

AF:

0.0623

Gnomad AMR exome

AF:

0.00293

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000984

Gnomad OTH exome

AF:

0.000897

GnomAD4 exome

AF:

0.00172

AC:

1894

AN:

1098051

Hom.:

Cov.:

AF XY:

0.00132

AC XY:

479

AN XY:

363411

show subpopulations

African (AFR)

AF:

0.0575

AC:

1519

AN:

26399

American (AMR)

AF:

0.00384

AC:

135

AN:

35191

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19379

East Asian (EAS)

AF:

0.00

AC:

AN:

30204

South Asian (SAS)

AF:

0.000111

AC:

AN:

54113

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40517

Middle Eastern (MID)

AF:

0.00218

AC:

AN:

4129

European-Non Finnish (NFE)

AF:

0.0000463

AC:

AN:

842029

Other (OTH)

AF:

0.00404

AC:

186

AN:

46090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.484

Heterozygous variant carriers

183

274

366

457

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

144

192

240

<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:

0.0179

AC:

1977

AN:

110455

Hom.:

Cov.:

AF XY:

0.0157

AC XY:

513

AN XY:

32701

show subpopulations

African (AFR)

AF:

0.0614

AC:

1861

AN:

30293

American (AMR)

AF:

0.00811

AC:

AN:

10357

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2637

East Asian (EAS)

AF:

0.00

AC:

AN:

3493

South Asian (SAS)

AF:

0.000390

AC:

AN:

2564

European-Finnish (FIN)

AF:

0.00

AC:

AN:

5893

Middle Eastern (MID)

AF:

0.00

AC:

AN:

219

European-Non Finnish (NFE)

AF:

0.000170

AC:

AN:

52818

Other (OTH)

AF:

0.0147

AC:

AN:

1498

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

128

193

257

321

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

120

<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:

0.00669

Hom.:

Bravo

AF:

0.0209

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Jul 08, 2013

Genetic Services Laboratory, University of Chicago

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Sep 04, 2014

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Familial thoracic aortic aneurysm and aortic dissection

Benign:1

Jul 20, 2015

Ambry Genetics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

FG syndrome

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.51

CADD

Benign

8.5

(source)

DANN

Benign

0.68

PhyloP100

0.71

PromoterAI

0.047

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=100/0

polymorphism (auto)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over