NM_004269.4:c.871G>A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PP2PP5

The NM_004269.4(MED27):c.871G>A(p.Gly291Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000112 in 1,607,968 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

MED27
NM_004269.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:3U:1

Conservation

PhyloP100: 7.70

Publications

2 publications found

Variant links:

Genes affected

MED27 (HGNC:2377): (mediator complex subunit 27) The activation of gene transcription is a multistep process that is triggered by factors that recognize transcriptional enhancer sites in DNA. These factors work with co-activators to direct transcriptional initiation by the RNA polymerase II apparatus. The protein encoded by this gene is a subunit of the CRSP (cofactor required for SP1 activation) complex, which, along with TFIID, is required for efficient activation by SP1. This protein is also a component of other multisubunit complexes e.g. thyroid hormone receptor-(TR-) associated proteins which interact with TR and facilitate TR function on DNA templates in conjunction with initiation factors and cofactors. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, and a pseudogene of this gene is located on the long arm of chromosome 5. [provided by RefSeq, Dec 2011]

MED27 Gene-Disease associations (from GenCC):

neurodevelopmental disorder with spasticity, cataracts, and cerebellar hypoplasia
Inheritance: AR Classification: STRONG Submitted by: ClinGen, G2P, Labcorp Genetics (formerly Invitae)
syndromic intellectual disability
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

MED27 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 3 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 1.2645 (below the threshold of 3.09). Trascript score misZ: 1.7239 (below the threshold of 3.09). GenCC associations: The gene is linked to neurodevelopmental disorder with spasticity, cataracts, and cerebellar hypoplasia, syndromic intellectual disability.

PP5

Variant 9-131860603-C-T is Pathogenic according to our data. Variant chr9-131860603-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 1064750.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004269.4. 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
	MED27	NM_004269.4	MANE Select	c.871G>A	p.Gly291Ser	missense	Exon 8 of 8	NP_004260.2
	MED27	NM_001253881.2		c.763G>A	p.Gly255Ser	missense	Exon 7 of 7	NP_001240810.1	Q6P2C8-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MED27	ENST00000292035.10	TSL:1 MANE Select	c.871G>A	p.Gly291Ser	missense	Exon 8 of 8	ENSP00000292035.5	Q6P2C8-1
MED27	ENST00000357028.6	TSL:1	c.763G>A	p.Gly255Ser	missense	Exon 7 of 7	ENSP00000349530.3	Q6P2C8-2
MED27	ENST00000897372.1		c.961G>A	p.Gly321Ser	missense	Exon 9 of 9	ENSP00000567431.1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152170

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:

0.00316

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000125

AC:

AN:

240510

AF XY:

0.00000767

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:

0.0000278

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000117

AC:

AN:

1455682

Hom.:

Cov.:

AF XY:

0.00000829

AC XY:

AN XY:

723750

show subpopulations

African (AFR)

AF:

0.0000301

AC:

AN:

33230

American (AMR)

AF:

0.00

AC:

AN:

43938

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25840

East Asian (EAS)

AF:

0.00

AC:

AN:

39426

South Asian (SAS)

AF:

0.00

AC:

AN:

85088

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53146

Middle Eastern (MID)

AF:

0.000185

AC:

AN:

5402

European-Non Finnish (NFE)

AF:

0.0000126

AC:

AN:

1109536

Other (OTH)

AF:

0.0000166

AC:

AN:

60076

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.528

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152286

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74472

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41564

American (AMR)

AF:

0.00

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00342

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.775

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000312

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.0000165

AC:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Neurodevelopmental disorder with spasticity, cataracts, and cerebellar hypoplasia (2)

not provided (1)

Severe myoclonic epilepsy in infancy (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Pathogenic

0.23

BayesDel_noAF

Uncertain

0.090

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.046

Eigen

Uncertain

0.56

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.96

M_CAP

Benign

0.0089

MetaRNN

Uncertain

0.64

MetaSVM

Benign

-0.69

MutationAssessor

Benign

0.90

PhyloP100

7.7

PrimateAI

Pathogenic

0.87

PROVEAN

Benign

-1.2

REVEL

Uncertain

0.38

Sift

Benign

0.083

Sift4G

Benign

0.19

Polyphen

1.0

Vest4

0.77

MutPred

0.70

Loss of ubiquitination at K286 (P = 0.1278)

MVP

0.74

MPC

1.2

ClinPred

0.89

GERP RS

5.3

Varity_R

0.21

gMVP

0.73

Mutation Taster

=28/72

disease causing

(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.

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