rs12849277

Variant names:

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_StrongBP6_Very_Strong

The NM_005120.3(MED12):c.4416-48T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.000029 ( 0 hom., 0 hem., cov: 14)

Exomes 𝑓: 0.010 ( 5 hom. 19 hem. )

Failed GnomAD Quality Control

Consequence

MED12
NM_005120.3 intron

Scores

Clinical Significance

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

Conservation

PhyloP100: -1.29

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: Orphanet, G2P, Labcorp Genetics (formerly Invitae)
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

new If you want to explore the variant's impact on the transcript NM_005120.3, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.93).

BP6

Variant X-71132797-T-C is Benign according to our data. Variant chrX-71132797-T-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 259638.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005120.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MED12	NM_005120.3	MANE Select	c.4416-48T>C		intron	N/A	NP_005111.2	Q93074-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MED12	ENST00000374080.8	TSL:1 MANE Select	c.4416-48T>C	intron	N/A	ENSP00000363193.3	Q93074-1
MED12	ENST00000374102.6	TSL:1	c.4416-48T>C	intron	N/A	ENSP00000363215.2	Q93074-2
MED12	ENST00000938012.1		c.4458-48T>C	intron	N/A	ENSP00000608071.1

Frequencies

GnomAD3 genomes

AF:

0.0000288

AC:

AN:

69531

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:

0.000296

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000381

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00111

AC:

AN:

74474

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.000368

Gnomad AMR exome

AF:

0.000794

Gnomad ASJ exome

AF:

0.00385

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000575

Gnomad NFE exome

AF:

0.00208

Gnomad OTH exome

AF:

0.00107

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0105

AC:

4029

AN:

384255

Hom.:

Cov.:

AF XY:

0.000154

AC XY:

AN XY:

123733

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00189

AC:

AN:

14830

American (AMR)

AF:

0.00318

AC:

AN:

21095

Ashkenazi Jewish (ASJ)

AF:

0.00727

AC:

AN:

7286

East Asian (EAS)

AF:

0.0000400

AC:

AN:

24999

South Asian (SAS)

AF:

0.000986

AC:

AN:

34491

European-Finnish (FIN)

AF:

0.000774

AC:

AN:

21952

Middle Eastern (MID)

AF:

0.00874

AC:

AN:

1030

European-Non Finnish (NFE)

AF:

0.0153

AC:

3678

AN:

240611

Other (OTH)

AF:

0.00791

AC:

142

AN:

17961

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.294

Heterozygous variant carriers

317

633

950

1266

1583

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

186

372

558

744

930

<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:

0.0000288

AC:

AN:

69531

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

22577

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

25364

American (AMR)

AF:

0.00

AC:

AN:

6834

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

1116

East Asian (EAS)

AF:

0.00

AC:

AN:

3388

South Asian (SAS)

AF:

0.00

AC:

AN:

2009

European-Finnish (FIN)

AF:

0.000296

AC:

AN:

3379

Middle Eastern (MID)

AF:

0.00

AC:

AN:

European-Non Finnish (NFE)

AF:

0.0000381

AC:

AN:

26257

Other (OTH)

AF:

0.00

AC:

AN:

815

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.250

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00946

Hom.:

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.93

CADD

Benign

0.13

(source)

DANN

Benign

0.45

PhyloP100

-1.3

Mutation Taster

=100/0

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over