Genetic Variant MED29:c.-39C>T (chr19-39391384-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_017592.4(MED29):c.-39C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000231 in 1,600,536 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

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

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

MED29
NM_017592.4 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.105

Variant links:

Genes affected

MED29 (HGNC:23074): (mediator complex subunit 29) MED29 is a subunit of the Mediator complex, a multiprotein coactivator of RNA transcription that interacts with DNA-bound transcriptional activators, RNA polymerase II (see MIM 180660), and general initiation factors (Sato et al., 2003 [PubMed 14576168]).[supplied by OMIM, Aug 2009]

MED29 links:

PAF1 (HGNC:25459): (PAF1 homolog, Paf1/RNA polymerase II complex component) This gene encodes a subunit of the polymerase associated factor (PAF1) complex. The PAF1 complex interacts with RNA polymerase II and plays a role in transcription elongation as well as histone modifications including ubiquitylation and methylation. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Feb 2012]

PAF1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.081252515).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MED29	NM_017592.4 link	c.-39C>T		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 4	ENST00000315588.11	NP_060062.2	Q9NX70-1B4DUA7
MED29	NM_017592.4 link	c.-39C>T		5_prime_UTR_variant	Exon 1 of 4	ENST00000315588.11	NP_060062.2	Q9NX70-1B4DUA7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MED29	ENST00000315588 link	c.-39C>T		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 4	1	NM_017592.4	ENSP00000314343.5		Q9NX70-1
MED29	ENST00000315588 link	c.-39C>T		5_prime_UTR_variant	Exon 1 of 4	1	NM_017592.4	ENSP00000314343.5		Q9NX70-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152220

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:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000604

AC:

AN:

248478

Hom.:

AF XY:

0.0000669

AC XY:

AN XY:

134512

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 SAS exome

AF:

0.000396

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000178

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.0000249

AC:

AN:

1448316

Hom.:

Cov.:

AF XY:

0.0000265

AC XY:

AN XY:

717570

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000350

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000454

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74366

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000489

Hom.:

Bravo

AF:

0.00000756

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000659

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 28, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.25C>T (p.R9C) alteration is located in exon 1 (coding exon 1) of the MED29 gene. This alteration results from a C to T substitution at nucleotide position 25, causing the arginine (R) at amino acid position 9 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.41

CADD

Benign

7.7

DANN

Uncertain

1.0

Eigen

Benign

-0.25

Eigen_PC

Benign

-0.30

FATHMM_MKL

Benign

0.27

LIST_S2

Benign

0.62

.;T

M_CAP

Benign

0.0067

MetaRNN

Benign

0.081

T;T

MetaSVM

Benign

-1.1

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.37

N;.

REVEL

Benign

0.10

Sift

Benign

0.15

T;.

Sift4G

Pathogenic

0.0

D;D

Polyphen

0.95

P;P

Vest4

0.41

MVP

0.65

MPC

0.68

ClinPred

0.23

GERP RS

4.1

gMVP

0.34

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

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