chr17-7673307-T-A

Variant names:

• chr17-7673307-T-A
• rs761121529
• ENST00000420246.6:c.1026A>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PM4

The ENST00000420246.6(TP53):​c.1026A>T​(p.Ter342Tyrext*?) variant causes a stop lost 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: TP53 ENST00000420246.6 stop_lost
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0160
• Publications: 2 publications found

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 Gene-Disease associations (from GenCC):

• breast cancer

  Inheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics
• Li-Fraumeni syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, ClinGen, Orphanet
• Li-Fraumeni syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Genomics England PanelApp
• adrenocortical carcinoma, hereditary

  Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics
• sarcoma

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• bone marrow failure syndrome 5

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• colorectal cancer

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
• choroid plexus carcinoma

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Stoplost variant in ENST00000420246.6 Downstream stopcodon found after 481 codons.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000420246.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TP53	NM_000546.6	MANE Select	c.993+228A>T		intron	N/A	NP_000537.3
	TP53	NM_001126114.3		c.1026A>T	p.Ter342Tyrext*?	stop_lost	Exon 10 of 12	NP_001119586.1
	TP53	NM_001407268.1		c.1026A>T	p.Ter342Tyrext*?	stop_lost	Exon 10 of 12	NP_001394197.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TP53	ENST00000420246.6	TSL:1	c.1026A>T	p.Ter342Tyrext*?	stop_lost	Exon 10 of 12	ENSP00000391127.2
	TP53	ENST00000622645.4	TSL:1	c.909A>T	p.Ter303Tyrext*?	stop_lost	Exon 10 of 12	ENSP00000482222.1
	TP53	ENST00000510385.5	TSL:1	c.630A>T	p.Ter210Tyrext*?	stop_lost	Exon 6 of 8	ENSP00000478499.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	12
DANN	Benign	0.94
Eigen	Benign	-0.34
Eigen_PC	Benign	-0.45
FATHMM_MKL	Benign	0.50	N
PhyloP100		-0.016
Vest4		0.33
GERP RS		2.4
BranchPoint Hunter		2.0
PromoterAI		-0.0066	Neutral

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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

dbSNP: rs761121529; hg19: chr17-7576625;