rs79824231

Positions:

• chr1-204549248-A-C
• chr1-204549248-A-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_002393.5(MDM4):​c.1039A>C​(p.Thr347Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,834 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: MDM4 NM_002393.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.20

Genes affected

MDM4 (HGNC:6974): (MDM4 regulator of p53) This gene encodes a nuclear protein that contains a p53 binding domain at the N-terminus and a RING finger domain at the C-terminus, and shows structural similarity to p53-binding protein MDM2. Both proteins bind the p53 tumor suppressor protein and inhibit its activity, and have been shown to be overexpressed in a variety of human cancers. However, unlike MDM2 which degrades p53, this protein inhibits p53 by binding its transcriptional activation domain. This protein also interacts with MDM2 protein via the RING finger domain, and inhibits the latter's degradation. So this protein can reverse MDM2-targeted degradation of p53, while maintaining suppression of p53 transactivation and apoptotic functions. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Feb 2011]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.057307005).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MDM4	NM_002393.5	c.1039A>C	p.Thr347Pro	missense_variant	11/11	ENST00000367182.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MDM4	ENST00000367182.8	c.1039A>C	p.Thr347Pro	missense_variant	11/11	1	NM_002393.5	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461834 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727222

Gnomad4 AFR exome AF: 0.0000896

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.075
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	16
DANN	Benign	0.81
DEOGEN2	Benign	0.039	T;.;.;T;T
Eigen	Benign	-0.52
Eigen_PC	Benign	-0.35
FATHMM_MKL	Uncertain	0.77	D
LIST_S2	Benign	0.65	T;T;T;T;T
M_CAP	Benign	0.0048	T
MetaRNN	Benign	0.057	T;T;T;T;T
MetaSVM	Benign	-0.98	T
MutationTaster	Benign	0.84	D;D;D;D;D
PrimateAI	Benign	0.40	T
Sift4G	Benign	0.37	T;T;T;T;T
Polyphen		0.0070	.;.;.;B;.
Vest4		0.057
MutPred		0.24		.;.;.;Loss of glycosylation at T347 (P = 0.0225);.;
MVP		0.24
MPC		0.21
ClinPred		0.099	T
GERP RS		2.4
Varity_R		0.045
gMVP		0.13

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		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

Other links and lift over

dbSNP: rs79824231; hg19: chr1-204518376;