12-70761583-C-T

Variant summary

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

The NM_002849.4(PTPRR):c.515G>A(p.Arg172Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000143 in 1,611,518 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: PTPRR NM_002849.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.11

Genes affected

PTPRR (HGNC:9680): (protein tyrosine phosphatase receptor type R) 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 a single intracellular catalytic domain, and thus represents a receptor-type PTP. Silencing of this gene has been associated with colorectal cancer. Multiple transcript variants encoding different isoforms have been found for this gene. This gene shares a symbol (PTPRQ) with another gene, protein tyrosine phosphatase, receptor type, Q (GeneID 374462), which is also located on chromosome 12. [provided by RefSeq, May 2011]

LOC124902960 (HGNC:):

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=0.0657711).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PTPRR	NM_002849.4	c.515G>A	p.Arg172Gln	missense_variant	4/14	ENST00000283228.7
LOC124902960	XR_007063361.1	n.629-11854C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTPRR	ENST00000283228.7	c.515G>A	p.Arg172Gln	missense_variant	4/14	1	NM_002849.4	P3
PTPRR	ENST00000342084.8	c.179G>A	p.Arg60Gln	missense_variant	3/13	2

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152150 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000280 AC: 7 AN: 250232 Hom.: 0 AF XY: 0.0000369 AC XY: 5 AN XY: 135344

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000293

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000164

Gnomad SAS exome AF: 0.0000329

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000144 AC: 21 AN: 1459250 Hom.: 0 Cov.: 30 AF XY: 0.0000179 AC XY: 13 AN XY: 726062

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.0000226

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000758

Gnomad4 SAS exome AF: 0.0000233

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000108

Gnomad4 OTH exome AF: 0.0000332

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152268 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74462

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000282 Hom.: 0

Bravo AF: 0.0000302

ExAC AF: 0.0000165 AC: 2

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 25, 2023

The c.515G>A (p.R172Q) alteration is located in exon 4 (coding exon 4) of the PTPRR gene. This alteration results from a G to A substitution at nucleotide position 515, causing the arginine (R) at amino acid position 172 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.070
BayesDel_addAF	Benign	-0.42	T
BayesDel_noAF	Benign	-0.57
Cadd	Benign	20
Dann	Uncertain	1.0
DEOGEN2	Benign	0.090	T;.
Eigen	Benign	-0.30
Eigen_PC	Benign	-0.28
FATHMM_MKL	Benign	0.15	N
LIST_S2	Benign	0.77	T;T
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.066	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.1	M;.
MutationTaster	Benign	0.91	N;N
PrimateAI	Benign	0.30	T
PROVEAN	Benign	0.30	N;N
REVEL	Benign	0.055
Sift	Uncertain	0.027	D;D
Sift4G	Benign	0.27	T;T
Polyphen		0.92	P;.
Vest4		0.13
MutPred		0.32		Gain of sheet (P = 0.0221);.;
MVP		0.51
MPC		0.13
ClinPred		0.097	T
GERP RS		3.6
Varity_R		0.062
gMVP		0.29

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.14		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: rs745910524; hg19: chr12-71155363; COSMIC: COSV51732772;