rs752300879

Variant names:

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_ModerateBP6BS1BS2

The NM_005120.3(MED12):c.1039A>G(p.Ser347Gly) variant causes a missense change. The variant allele was found at a frequency of 0.000201 in 1,209,512 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 73 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0000090 ( 0 hom., 0 hem., cov: 23)

Exomes 𝑓: 0.00022 ( 0 hom. 73 hem. )

Consequence

MED12
NM_005120.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:2

Conservation

PhyloP100: 6.90

Publications

1 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -11 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.091215074).

BP6

Variant X-71121754-A-G is Benign according to our data. Variant chrX-71121754-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 213631.

BS1

Variant frequency is greater than expected in population nfe. GnomAdExome4 allele frequency = 0.00022 (242/1098047) while in subpopulation NFE AF = 0.000283 (238/842039). AF 95% confidence interval is 0.000253. There are 0 homozygotes in GnomAdExome4. There are 73 alleles in the male GnomAdExome4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Hemizygotes in GnomAdExome4 at 73 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MED12	NM_005120.3 link	c.1039A>G	p.Ser347Gly	missense_variant	Exon 7 of 45	ENST00000374080.8	NP_005111.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MED12	ENST00000374080.8 link	c.1039A>G	p.Ser347Gly	missense_variant	Exon 7 of 45	1	NM_005120.3	ENSP00000363193.3

Frequencies

GnomAD3 genomes

AF:

0.00000897

AC:

AN:

111465

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000189

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000166

AC:

AN:

180568

AF XY:

0.0000300

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000372

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000220

AC:

242

AN:

1098047

Hom.:

Cov.:

AF XY:

0.000201

AC XY:

AN XY:

363409

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26401

American (AMR)

AF:

0.00

AC:

AN:

35198

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19356

East Asian (EAS)

AF:

0.00

AC:

AN:

30204

South Asian (SAS)

AF:

0.00

AC:

AN:

54110

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40516

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4136

European-Non Finnish (NFE)

AF:

0.000283

AC:

238

AN:

842039

Other (OTH)

AF:

0.0000868

AC:

AN:

46087

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

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:

0.00000897

AC:

AN:

111465

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

33703

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30613

American (AMR)

AF:

0.00

AC:

AN:

10524

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2651

East Asian (EAS)

AF:

0.00

AC:

AN:

3544

South Asian (SAS)

AF:

0.00

AC:

AN:

2664

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6053

Middle Eastern (MID)

AF:

0.00

AC:

AN:

239

European-Non Finnish (NFE)

AF:

0.0000189

AC:

AN:

52987

Other (OTH)

AF:

0.00

AC:

AN:

1506

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.0000712

Hom.:

Bravo

AF:

0.0000416

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Familial thoracic aortic aneurysm and aortic dissection

Uncertain:1

Sep 30, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1039A>G (p.S347G) alteration is located in exon 7 (coding exon 7) of the MED12 gene. This alteration results from a A to G substitution at nucleotide position 1039, causing the serine (S) at amino acid position 347 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

X-linked intellectual disability with marfanoid habitus;C3698541:Blepharophimosis - intellectual disability syndrome, MKB type;C5399762:FG syndrome 1

Uncertain:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

FG syndrome

Benign:1

Jan 01, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Apr 21, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.75

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.053

T;.;T

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.80

T;T;T

M_CAP

Benign

0.027

MetaRNN

Benign

0.091

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

.;L;L

PhyloP100

6.9

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.8

.;N;N

REVEL

Benign

0.038

Sift

Benign

0.11

.;T;T

Sift4G

Uncertain

0.053

T;T;T

Polyphen

0.0

B;B;B

Vest4

0.19

MutPred

0.18

.;Loss of glycosylation at S347 (P = 0.0113);Loss of glycosylation at S347 (P = 0.0113);

MVP

0.56

MPC

0.85

ClinPred

0.28

GERP RS

4.5

Varity_R

0.43

gMVP

0.43

Mutation Taster

=98/2

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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