chr17-7675140-G-T

Position:

• chr17-7675140-G-T

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM1 PM2 PM5 PP3_Strong PP5_Moderate

The NM_000546.6(TP53):​c.472C>A​(p.Arg158Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R158H) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: TP53 NM_000546.6 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 2.62

Genes affected

TP53 (HGNC:11998): (tumor protein p53) This gene encodes a tumor suppressor protein containing transcriptional activation, DNA binding, and oligomerization domains. The encoded protein responds to diverse cellular stresses to regulate expression of target genes, thereby inducing cell cycle arrest, apoptosis, senescence, DNA repair, or changes in metabolism. Mutations in this gene are associated with a variety of human cancers, including hereditary cancers such as Li-Fraumeni syndrome. Alternative splicing of this gene and the use of alternate promoters result in multiple transcript variants and isoforms. Additional isoforms have also been shown to result from the use of alternate translation initiation codons from identical transcript variants (PMIDs: 12032546, 20937277). [provided by RefSeq, Dec 2016]

TP53 (HGNC:):

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PM1: In a strand (size 9) in uniprot entity P53_HUMAN there are 5 pathogenic changes around while only 0 benign (100%) in NM_000546.6
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr17-7675139-C-T is described in Lovd as [Pathogenic].
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.993
• PP5: Variant 17-7675140-G-T is Pathogenic according to our data. Variant chr17-7675140-G-T is described in ClinVar as [Pathogenic]. Clinvar id is 1067910.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TP53	NM_000546.6	c.472C>A	p.Arg158Ser	missense_variant	5/11	ENST00000269305.9	NP_000537.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TP53	ENST00000269305.9	c.472C>A	p.Arg158Ser	missense_variant	5/11	1	NM_000546.6	ENSP00000269305.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Li-Fraumeni syndrome Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Sep 13, 2023

For these reasons, this variant has been classified as Pathogenic. Experimental studies are conflicting or provide insufficient evidence to determine the effect of this variant on TP53 function (PMID: 12826609, 29979965, 30224644). This sequence change replaces arginine, which is basic and polar, with serine, which is neutral and polar, at codon 158 of the TP53 protein (p.Arg158Ser). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with adrenocortical carcinoma (Invitae). In at least one individual the variant was observed to be de novo. ClinVar contains an entry for this variant (Variation ID: 1067910). Advanced modeling performed at Invitae incorporating data from internal and/or published experimental studies (PMID: 12826609, 29979965, 30224644) indicates that this missense variant is expected to disrupt TP53 function. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.53	D
BayesDel_noAF	Pathogenic	0.52
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.88	D;D;.;.;.;.;D;.;.;.;.;.;.;D;.;.;.;D;D
Eigen	Uncertain	0.36
Eigen_PC	Benign	0.16
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.96	D;D;D;D;D;.;.;.;D;D;.;D;D;D;D;D;D;D;D
M_CAP	Pathogenic	0.72	D
MetaRNN	Pathogenic	0.99	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	3.2	.;.;.;.;.;.;M;.;M;M;M;.;.;M;.;.;.;.;.
PrimateAI	Uncertain	0.54	T
PROVEAN	Pathogenic	-5.8	D;D;.;.;.;.;D;.;.;D;D;.;.;D;.;.;D;D;D
REVEL	Pathogenic	0.86
Sift	Pathogenic	0.0	D;D;.;.;.;.;D;.;.;D;D;.;.;D;.;.;D;D;D
Sift4G	Pathogenic	0.0010	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;.;.
Polyphen		1.0	D;.;.;.;.;.;D;.;D;D;D;.;.;D;.;.;.;D;.
Vest4		0.90
MutPred		0.96		Loss of catalytic residue at R158 (P = 0.0248);Loss of catalytic residue at R158 (P = 0.0248);.;.;.;.;Loss of catalytic residue at R158 (P = 0.0248);.;Loss of catalytic residue at R158 (P = 0.0248);Loss of catalytic residue at R158 (P = 0.0248);Loss of catalytic residue at R158 (P = 0.0248);.;.;Loss of catalytic residue at R158 (P = 0.0248);.;.;.;.;Loss of catalytic residue at R158 (P = 0.0248);
MVP		1.0
MPC		1.8
ClinPred		1.0	D
GERP RS		3.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.98
gMVP		0.89

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-7578458; COSMIC: COSV52778687; COSMIC: COSV52778687;