chr20-42353702-G-A

Position:

• chr20-42353702-G-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_007050.6(PTPRT):​c.1561-1417C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.298 in 152,068 control chromosomes in the GnomAD database, including 7,550 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.30 (7550 hom., cov: 32)
• Consequence: PTPRT NM_007050.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.694

Genes affected

PTPRT (HGNC:9682): (protein tyrosine phosphatase receptor type T) The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. PTPs are known to be signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle, and oncogenic transformation. This PTP possesses an extracellular region, a single transmembrane region, and two tandem intracellular catalytic domains, and thus represents a receptor-type PTP. The extracellular region contains a meprin-A5 antigen-PTP (MAM) domain, Ig-like and fibronectin type III-like repeats. The protein domain structure and the expression pattern of the mouse counterpart of this PTP suggest its roles in both signal transduction and cellular adhesion in the central nervous system. Two alternatively spliced transcript variants of this gene, which encode distinct proteins, have been reported. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.776 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PTPRT	NM_007050.6	c.1561-1417C>T		intron_variant		ENST00000373187.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTPRT	ENST00000373187.6	c.1561-1417C>T		intron_variant		1	NM_007050.6	P4

Frequencies

GnomAD3 genomes AF: 0.298 AC: 45234 AN: 151950 Hom.: 7531 Cov.: 32

Gnomad AFR AF: 0.289

Gnomad AMI AF: 0.303

Gnomad AMR AF: 0.357

Gnomad ASJ AF: 0.213

Gnomad EAS AF: 0.796

Gnomad SAS AF: 0.391

Gnomad FIN AF: 0.265

Gnomad MID AF: 0.256

Gnomad NFE AF: 0.255

Gnomad OTH AF: 0.289

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.298 AC: 45293 AN: 152068 Hom.: 7550 Cov.: 32 AF XY: 0.303 AC XY: 22536 AN XY: 74336

Gnomad4 AFR AF: 0.289

Gnomad4 AMR AF: 0.357

Gnomad4 ASJ AF: 0.213

Gnomad4 EAS AF: 0.796

Gnomad4 SAS AF: 0.390

Gnomad4 FIN AF: 0.265

Gnomad4 NFE AF: 0.255

Gnomad4 OTH AF: 0.298

Alfa AF: 0.266 Hom.: 8491

Bravo AF: 0.308

Asia WGS AF: 0.578 AC: 2007 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	0.38
DANN	Benign	0.52

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

LitVar

Other links and lift over

dbSNP: rs6102795; hg19: chr20-40982342;