X-71118781-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2

The NM_005120.3(MED12):c.27C>T(p.Tyr9Tyr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000024 in 1,206,244 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 8 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.000073 ( 0 hom., 3 hem., cov: 20)

Exomes 𝑓: 0.000019 ( 0 hom. 5 hem. )

Consequence

MED12
NM_005120.3 synonymous

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 2.67

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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.27).

BP6

Variant X-71118781-C-T is Benign according to our data. Variant chrX-71118781-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 383831.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=2.67 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0000734 (8/109055) while in subpopulation AFR AF = 0.000234 (7/29853). AF 95% confidence interval is 0.00011. There are 0 homozygotes in GnomAd4. There are 3 alleles in the male GnomAd4 subpopulation. Median coverage is 20. This position passed quality control check.

BS2

High Hemizygotes in GnomAd4 at 3 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MED12	NM_005120.3 link	c.27C>T	p.Tyr9Tyr	synonymous_variant	Exon 1 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.27C>T	p.Tyr9Tyr	synonymous_variant	Exon 1 of 45	1	NM_005120.3	ENSP00000363193.3		Q93074-1

Frequencies

GnomAD3 genomes

AF:

0.0000734

AC:

AN:

109055

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000234

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:

0.00

Gnomad OTH

AF:

0.000686

GnomAD2 exomes

AF:

0.0000569

AC:

AN:

175607

AF XY:

0.0000156

show subpopulations

Gnomad AFR exome

AF:

0.000519

Gnomad AMR exome

AF:

0.000147

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000191

AC:

AN:

1097189

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

362771

show subpopulations

African (AFR)

AF:

0.000493

AC:

AN:

26384

American (AMR)

AF:

0.000114

AC:

AN:

35175

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19367

East Asian (EAS)

AF:

0.0000331

AC:

AN:

30178

South Asian (SAS)

AF:

0.00

AC:

AN:

54002

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40243

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4110

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

841728

Other (OTH)

AF:

0.0000652

AC:

AN:

46002

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000734

AC:

AN:

109055

Hom.:

Cov.:

AF XY:

0.0000958

AC XY:

AN XY:

31319

show subpopulations

African (AFR)

AF:

0.000234

AC:

AN:

29853

American (AMR)

AF:

0.00

AC:

AN:

10168

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2623

East Asian (EAS)

AF:

0.00

AC:

AN:

3462

South Asian (SAS)

AF:

0.00

AC:

AN:

2488

European-Finnish (FIN)

AF:

0.00

AC:

AN:

5635

Middle Eastern (MID)

AF:

0.00

AC:

AN:

239

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

52463

Other (OTH)

AF:

0.000686

AC:

AN:

1457

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.000128

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Feb 23, 2016

GeneDx

Significance:Likely 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

Feb 16, 2022

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely 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

Jan 19, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely 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

-0.27

CADD

Benign

(source)

DANN

Uncertain

0.98

PhyloP100

2.7

PromoterAI

-0.066

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=79/21

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

X-71118781-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over