NM_005120.3:c.6321_6335delGCAGCAGCAACAGCA

Variant names:

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP3BP6BS1BS2

The NM_005120.3(MED12):c.6321_6335delGCAGCAGCAACAGCA(p.Gln2108_Gln2112del) variant causes a disruptive inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000819 in 1,157,316 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 258 hemizygotes in GnomAD. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00046 ( 0 hom., 13 hem., cov: 23)

Exomes 𝑓: 0.00086 ( 0 hom. 245 hem. )

Consequence

MED12
NM_005120.3 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:4

Conservation

PhyloP100: 3.01

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 -10 ACMG points.

BP3

Nonframeshift variant in repetitive region in NM_005120.3

BP6

Variant X-71141271-ACAGCAACAGCAGCAG-A is Benign according to our data. Variant chrX-71141271-ACAGCAACAGCAGCAG-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 166877.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Benign=3}.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00046 (51/110952) while in subpopulation NFE AF= 0.000758 (40/52791). AF 95% confidence interval is 0.000572. There are 0 homozygotes in gnomad4. There are 13 alleles in male gnomad4 subpopulation. Median coverage is 23. This position pass quality control queck.

BS2

High Hemizygotes in GnomAd4 at 13 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MED12	NM_005120.3 link	c.6321_6335delGCAGCAGCAACAGCA	p.Gln2108_Gln2112del	disruptive_inframe_deletion	Exon 43 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.6321_6335delGCAGCAGCAACAGCA	p.Gln2108_Gln2112del	disruptive_inframe_deletion	Exon 43 of 45	1	NM_005120.3	ENSP00000363193.3		Q93074-1

Frequencies

GnomAD3 genomes

AF:

0.000460

AC:

AN:

110952

Hom.:

Cov.:

AF XY:

0.000389

AC XY:

AN XY:

33380

show subpopulations

Gnomad AFR

AF:

0.000263

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000192

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000166

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000758

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000432

AC:

AN:

113535

Hom.:

AF XY:

0.000296

AC XY:

AN XY:

40577

show subpopulations

Gnomad AFR exome

AF:

0.000306

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000711

Gnomad NFE exome

AF:

0.000861

Gnomad OTH exome

AF:

0.000306

GnomAD4 exome

AF:

0.000857

AC:

897

AN:

1046364

Hom.:

AF XY:

0.000724

AC XY:

245

AN XY:

338476

show subpopulations

Gnomad4 AFR exome

AF:

0.0000808

Gnomad4 AMR exome

AF:

0.0000717

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000531

Gnomad4 NFE exome

AF:

0.00104

Gnomad4 OTH exome

AF:

0.000680

GnomAD4 genome

AF:

0.000460

AC:

AN:

110952

Hom.:

Cov.:

AF XY:

0.000389

AC XY:

AN XY:

33380

show subpopulations

Gnomad4 AFR

AF:

0.000263

Gnomad4 AMR

AF:

0.000192

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000166

Gnomad4 NFE

AF:

0.000758

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000434

Hom.:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

FG syndrome

Uncertain:1

Feb 01, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant, c.6321_6335del, results in the deletion of 5 amino acid(s) of the MED12 protein (p.Gln2111_Gln2115del), but otherwise preserves the integrity of the reading frame. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with MED12-related conditions. ClinVar contains an entry for this variant (Variation ID: 166877). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified

Benign:1

Dec 18, 2013

Eurofins Ntd Llc (ga)

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Benign:1

Nov 05, 2015

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cardiovascular phenotype

Benign:1

Nov 30, 2016

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

General population or subpopulation frequency is too high to be a pathogenic mutation based on disease/syndrome prevalence and penetrance -

MED12-related disorder

Benign:1

Jul 15, 2020

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely 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

Splicing

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