NM_030973.4:c.58T>A

Variant names:

• chr19-49818399-T-A
• NM_030973.4:c.58T>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_030973.4(MED25):​c.58T>A​(p.Phe20Ile) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: MED25 NM_030973.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.84
• Publications: 0 publications found

Genes affected

MED25 (HGNC:28845): (mediator complex subunit 25) This gene encodes a component of the transcriptional coactivator complex termed the Mediator complex. This complex is required for transcription of most RNA polymerase II-dependent genes. The encoded protein plays a role in chromatin modification and in preinitiation complex assembly. Mutations in this gene are associated with Charcot-Marie-Tooth disease type 2B2. [provided by RefSeq, Apr 2010]

MED25 Gene-Disease associations (from GenCC):

• congenital cataract-microcephaly-nevus flammeus simplex-severe intellectual disability syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet
• autosomal recessive non-syndromic intellectual disability

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Charcot-Marie-Tooth disease type 2B2

  Inheritance: AR Classification: SUPPORTIVE, NO_KNOWN Submitted by: ClinGen, Orphanet

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030973.4. 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
	MED25	NM_030973.4	MANE Select	c.58T>A	p.Phe20Ile	missense	Exon 1 of 18	NP_112235.2	Q71SY5-1
	MED25	NM_001378355.1		c.58T>A	p.Phe20Ile	missense	Exon 1 of 18	NP_001365284.1	M0QZQ2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MED25	ENST00000312865.10	TSL:1 MANE Select	c.58T>A	p.Phe20Ile	missense	Exon 1 of 18	ENSP00000326767.5	Q71SY5-1
	MED25	ENST00000538643.5	TSL:1	c.58T>A	p.Phe20Ile	missense	Exon 1 of 13	ENSP00000437496.1	Q71SY5-6
	MED25	ENST00000595185.5	TSL:1	c.58T>A	p.Phe20Ile	missense	Exon 1 of 7	ENSP00000470027.1	M0QYR4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Charcot-Marie-Tooth disease type 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.92
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.080
CADD	Pathogenic	27
DANN	Uncertain	0.98
DEOGEN2	Benign	0.13	T
Eigen	Benign	0.12
Eigen_PC	Benign	0.14
FATHMM_MKL	Benign	0.74	D
LIST_S2	Uncertain	0.93	D
M_CAP	Pathogenic	0.55	D
MetaRNN	Uncertain	0.44	T
MetaSVM	Benign	-0.52	T
MutationAssessor	Uncertain	2.1	M
PhyloP100		4.8
PrimateAI	Pathogenic	0.97	D
PROVEAN	Uncertain	-3.6	D
REVEL	Benign	0.27
Sift	Benign	0.098	T
Sift4G	Benign	0.092	T
Polyphen		0.82	P
Vest4		0.80
MutPred		0.31		Loss of catalytic residue at F20 (P = 0.0024)
MVP		0.71
MPC		1.4
ClinPred		0.99	D
GERP RS		3.7
PromoterAI		0.042	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6
Varity_R		0.64
gMVP		0.75
Mutation Taster		=46/54	disease causing

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

Other links and lift over

hg19: chr19-50321656;