chr4-54270640-A-G

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_006206.6(PDGFRA):c.1129A>G(p.Ser377Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000138 in 1,444,808 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S377N) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

PDGFRA
NM_006206.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 6.06

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

gastrointestinal stromal tumor
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
polyps, multiple and recurrent inflammatory fibroid, gastrointestinal
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Genomics England PanelApp, Ambry Genetics, G2P
congenital heart disease
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
isolated cleft palate
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

PDGFRA links:

ENSG00000282278 (HGNC:):

ENSG00000282278 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PDGFRA	NM_006206.6 link	c.1129A>G	p.Ser377Gly	missense_variant	Exon 8 of 23	ENST00000257290.10	NP_006197.1	P16234-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PDGFRA	ENST00000257290.10 link	c.1129A>G	p.Ser377Gly	missense_variant	Exon 8 of 23	1	NM_006206.6	ENSP00000257290.5	P16234-1
PDGFRA	ENST00000509092.5 link	n.947A>G		non_coding_transcript_exon_variant	Exon 7 of 15	1
PDGFRA	ENST00000509490.5 link	n.1129A>G		non_coding_transcript_exon_variant	Exon 8 of 18	1		ENSP00000424218.1	P16234-3
ENSG00000282278	ENST00000507166.5 link	c.1018-4285A>G		intron_variant	Intron 12 of 23	2		ENSP00000423325.1	A0A0B4J203

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000138

AC:

AN:

1444808

Hom.:

Cov.:

AF XY:

0.00000139

AC XY:

AN XY:

720010

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33124

American (AMR)

AF:

0.00

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25988

East Asian (EAS)

AF:

0.00

AC:

AN:

39594

South Asian (SAS)

AF:

0.00

AC:

AN:

85894

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53068

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5720

European-Non Finnish (NFE)

AF:

0.00000182

AC:

AN:

1096892

Other (OTH)

AF:

0.00

AC:

AN:

59816

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.600

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Gastrointestinal stromal tumor

Uncertain:1

Dec 23, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces serine, which is neutral and polar, with glycine, which is neutral and non-polar, at codon 377 of the PDGFRA protein (p.Ser377Gly). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with PDGFRA-related conditions. ClinVar contains an entry for this variant (Variation ID: 458985). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) 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

Jul 15, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.S377G variant (also known as c.1129A>G), located in coding exon 7 of the PDGFRA gene, results from an A to G substitution at nucleotide position 1129. The serine at codon 377 is replaced by glycine, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.014

BayesDel_noAF

Benign

-0.26

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.43

Eigen

Benign

0.10

Eigen_PC

Benign

0.17

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.81

M_CAP

Benign

0.073

MetaRNN

Uncertain

0.57

MetaSVM

Benign

-0.61

MutationAssessor

Uncertain

2.6

PhyloP100

6.1

PrimateAI

Uncertain

0.54

PROVEAN

Uncertain

-3.0

REVEL

Benign

0.26

Sift

Benign

0.064

Sift4G

Benign

0.063

Polyphen

0.51

Vest4

0.54

MutPred

0.58

Loss of stability (P = 0.0086);

MVP

0.80

MPC

0.31

ClinPred

0.88

GERP RS

4.6

Varity_R

0.43

gMVP

0.84

Mutation Taster

=76/24

polymorphism

(source)

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over