X-71129687-G-A

Position:

chrX-71129687-G-A

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_005120.3(MED12):c.3699G>A(p.Ala1233=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000244 in 1,184,566 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 86 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 0.0013 ( 0 hom., 37 hem., cov: 23)

Exomes 𝑓: 0.00014 ( 0 hom. 49 hem. )

Consequence

MED12
NM_005120.3 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: -0.207

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.6).

BP6

Variant X-71129687-G-A is Benign according to our data. Variant chrX-71129687-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 381901.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.207 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00129 (144/111838) while in subpopulation AFR AF= 0.00416 (128/30760). AF 95% confidence interval is 0.00357. There are 0 homozygotes in gnomad4. There are 37 alleles in male gnomad4 subpopulation. Median coverage is 23. This position pass quality control queck.

BS2

High Hemizygotes in GnomAd4 at 37 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MED12	NM_005120.3 linkuse as main transcript	c.3699G>A	p.Ala1233=	synonymous_variant	27/45	ENST00000374080.8	NP_005111.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MED12	ENST00000374080.8 linkuse as main transcript	c.3699G>A	p.Ala1233=	synonymous_variant	27/45	1	NM_005120.3	ENSP00000363193	P4	Q93074-1

Frequencies

GnomAD3 genomes

AF:

0.00127

AC:

142

AN:

111787

Hom.:

Cov.:

AF XY:

0.00100

AC XY:

AN XY:

33981

show subpopulations

Gnomad AFR

AF:

0.00411

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00114

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:

0.0000753

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000226

AC:

AN:

137188

Hom.:

AF XY:

0.000140

AC XY:

AN XY:

42908

show subpopulations

Gnomad AFR exome

AF:

0.00270

Gnomad AMR exome

AF:

0.0000447

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000131

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000521

Gnomad OTH exome

AF:

0.000550

GnomAD4 exome

AF:

0.000135

AC:

145

AN:

1072728

Hom.:

Cov.:

AF XY:

0.000140

AC XY:

AN XY:

349690

show subpopulations

Gnomad4 AFR exome

AF:

0.00397

Gnomad4 AMR exome

AF:

0.000194

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000391

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000603

Gnomad4 OTH exome

AF:

0.000620

GnomAD4 genome

AF:

0.00129

AC:

144

AN:

111838

Hom.:

Cov.:

AF XY:

0.00109

AC XY:

AN XY:

34042

show subpopulations

Gnomad4 AFR

AF:

0.00416

Gnomad4 AMR

AF:

0.00114

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000753

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00114

Hom.:

Bravo

AF:

0.00156

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Benign, criteria provided, single submitter	clinical testing	GeneDx	May 01, 2019	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	May 01, 2022	MED12: BP4, BP7 -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Familial thoracic aortic aneurysm and aortic dissection

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 11, 2015

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

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 26, 2024

- -

MED12-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 28, 2020

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.60

CADD

Benign

4.0

DANN

Benign

0.84

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over