17-7676283-G-C

Position:

• chr17-7676283-G-C

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM2 PP5_Very_Strong

The NM_000546.6(TP53):​c.97-11C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: TP53 NM_000546.6 intron
• Scores: Splicing: ADA: 0.9998
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:2
• Conservation: PhyloP100: -0.492

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]

ACMG classification

Verdict is Pathogenic. Variant got 10 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 17-7676283-G-C is Pathogenic according to our data. Variant chr17-7676283-G-C is described in ClinVar as [Pathogenic]. Clinvar id is 638852.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TP53	NM_000546.6	c.97-11C>G		intron_variant		ENST00000269305.9	NP_000537.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TP53	ENST00000269305.9	c.97-11C>G		intron_variant		1	NM_000546.6	ENSP00000269305.4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 58

GnomAD4 genome Cov.: 31

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Li-Fraumeni syndrome Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 10, 2021

This variant has been observed in individual(s) with Li-Fraumeni syndrome (PMID: 11420676, 24382691, 28681140). It has also been observed to segregate with disease in related individuals. This variant is also known as IVS3-11 C>G in the literature. ClinVar contains an entry for this variant (Variation ID: 638852). For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this variant results in the generation of two aberrant transcripts, one that leads to in-frame skipping of exon 4, and another that leads to the out-of-frame activation of a cryptic acceptor splice site located 10 nucleotides upstream of the natural splice site in intron 3 (PMID: 11420676). This variant is not present in population databases (ExAC no frequency). This sequence change falls in intron 3 of the TP53 gene. It does not directly change the encoded amino acid sequence of the TP53 protein. -

Adrenocortical carcinoma, hereditary Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Aug 19, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	23
DANN	Benign	0.47
RBP_binding_hub_radar		0.85
RBP_regulation_power_radar		2.1

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.99
SpliceAI score (max)		0.97		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.97		Position offset: -1
DS_AL_spliceai		0.59		Position offset: -11

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs769697802; hg19: chr17-7579601; COSMIC: COSV52798761; COSMIC: COSV52798761;