4-54288805-C-G

Variant names:

• chr4-54288805-C-G
• NM_006206.6:c.2681C>G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_006206.6(PDGFRA):​c.2681C>G​(p.Thr894Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PDGFRA NM_006206.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.89

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]

ENSG00000282278 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 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	c.2681C>G	p.Thr894Ser	missense_variant	Exon 20 of 23	ENST00000257290.10	NP_006197.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PDGFRA	ENST00000257290.10	c.2681C>G	p.Thr894Ser	missense_variant	Exon 20 of 23	1	NM_006206.6	ENSP00000257290.5
ENSG00000282278	ENST00000507166.5	c.1961C>G	p.Thr654Ser	missense_variant	Exon 21 of 24	2		ENSP00000423325.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Hereditary cancer-predisposing syndrome Uncertain:1

Nov 02, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.T894S variant (also known as c.2681C>G), located in coding exon 19 of the PDGFRA gene, results from a C to G substitution at nucleotide position 2681. The threonine at codon 894 is replaced by serine, an amino acid with similar properties. This amino acid position is conserved. In addition, the in silico prediction for this alteration is inconclusive. 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	Pathogenic	0.69
BayesDel_addAF	Uncertain	0.089	D
BayesDel_noAF	Benign	-0.11
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.24	.;T
Eigen	Benign	-0.078
Eigen_PC	Benign	0.070
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.69	T;T
M_CAP	Uncertain	0.10	D
MetaRNN	Uncertain	0.49	T;T
MetaSVM	Uncertain	-0.24	T
MutationAssessor	Benign	0.73	.;N
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	-1.7	N;N
REVEL	Uncertain	0.41
Sift	Benign	1.0	T;T
Sift4G	Benign	1.0	T;T
Polyphen		0.60	.;P
Vest4		0.45
MutPred		0.59		.;Gain of disorder (P = 0.0382);
MVP		0.77
MPC		2.6
ClinPred		0.70	D
GERP RS		6.1
Varity_R		0.23
gMVP		0.71

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-55154972;