4-54290367-C-T

Position:

chr4-54290367-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PP2PP3BS2

The NM_006206.6(PDGFRA):c.2935C>T(p.Arg979Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000122 in 1,611,800 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

PDGFRA
NM_006206.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4O:1

Conservation

PhyloP100: 5.70

Variant links:

Genes affected

PDGFRA (HGNC:8803): (platelet derived growth factor receptor alpha) This gene encodes a cell surface tyrosine kinase receptor for members of the platelet-derived growth factor family. These growth factors are mitogens for cells of mesenchymal origin. The identity of the growth factor bound to a receptor monomer determines whether the functional receptor is a homodimer or a heterodimer, composed of both platelet-derived growth factor receptor alpha and beta polypeptides. Studies suggest that this gene plays a role in organ development, wound healing, and tumor progression. Mutations in this gene have been associated with idiopathic hypereosinophilic syndrome, somatic and familial gastrointestinal stromal tumors, and a variety of other cancers. [provided by RefSeq, Mar 2012]

PDGFRA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PDGFRA. . Gene score misZ 1.9401 (greater than the threshold 3.09). Trascript score misZ 3.4078 (greater than threshold 3.09). GenCC has associacion of gene with congenital heart disease, polyps, multiple and recurrent inflammatory fibroid, gastrointestinal, gastrointestinal stromal tumor, isolated cleft palate.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.783

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PDGFRA	NM_006206.6 linkuse as main transcript	c.2935C>T	p.Arg979Cys	missense_variant	22/23	ENST00000257290.10	NP_006197.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PDGFRA	ENST00000257290.10 linkuse as main transcript	c.2935C>T	p.Arg979Cys	missense_variant	22/23	1	NM_006206.6	ENSP00000257290	P1	P16234-1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000955

AC:

AN:

251288

Hom.:

AF XY:

0.0000884

AC XY:

AN XY:

135802

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000139

Gnomad NFE exome

AF:

0.000141

Gnomad OTH exome

AF:

0.000489

GnomAD4 exome

AF:

0.000128

AC:

187

AN:

1459580

Hom.:

Cov.:

AF XY:

0.000128

AC XY:

AN XY:

726230

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000206

Gnomad4 NFE exome

AF:

0.000152

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74360

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000118

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000131

Hom.:

Bravo

AF:

0.0000680

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000519

AC:

ExAC

AF:

0.0000988

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

PDGFRA-related disorder

Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

May 29, 2024

The PDGFRA c.2935C>T variant is predicted to result in the amino acid substitution p.Arg979Cys. This variant has been reported in an individual with breast cancer (Wen et al. 2014. PubMed ID: 24969172, file S2). It was also reported in a study of cancer susceptibility genes in a cohort of healthy individuals (Bodian et al. 2014. PubMed ID: 24728327, Table S1). This variant is reported in 0.014% of alleles in individuals of European (Non-Finnish) descent in gnomAD and interpreted as a variant of uncertain significance in the ClinVar database (https://www.ncbi.nlm.nih.gov/clinvar/variation/135019). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Apr 03, 2024

Identified in a patient with ductal carcinoma in situ (DCIS) of the breast in published literature; however, additional variants in cancer-related genes were also reported (PMID: 24969172); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 24728327, 24969172) -

Gastrointestinal stromal tumor

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 01, 2024

This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 979 of the PDGFRA protein (p.Arg979Cys). This variant is present in population databases (rs587778597, gnomAD 0.01%). This missense change has been observed in individual(s) with breast cancer (PMID: 24969172). ClinVar contains an entry for this variant (Variation ID: 135019). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt PDGFRA protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Hereditary cancer-predisposing syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 25, 2019

The p.R979C variant (also known as c.2935C>T), located in coding exon 21 of the PDGFRA gene, results from a C to T substitution at nucleotide position 2935. The arginine at codon 979 is replaced by cysteine, an amino acid with highly dissimilar properties. This alteration was identified in one individual from a BRCA1/2-negative familial breast cancer kindred who underwent whole exome sequencing (Wen H et al. BMC Cancer 2014 Jun;14:470). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

not specified

Other:1

not provided, no classification provided

reference population

ITMI

Sep 19, 2013

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.84

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Pathogenic

0.28

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.57

.;D

Eigen

Pathogenic

0.72

Eigen_PC

Pathogenic

0.69

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.95

D;D

M_CAP

Uncertain

0.095

MetaRNN

Pathogenic

0.78

D;D

MetaSVM

Uncertain

0.29

MutationAssessor

Uncertain

2.5

.;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.82

PROVEAN

Pathogenic

-5.3

D;D

REVEL

Pathogenic

0.67

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.0030

D;D

Polyphen

1.0

.;D

Vest4

0.84

MVP

0.76

MPC

0.27

ClinPred

0.50

GERP RS

5.8

Varity_R

0.42

gMVP

0.74

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over