chr4-54265017-G-C

Variant names:

• chr4-54265017-G-C
• rs774246071
• NM_006206.6:c.727G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006206.6(PDGFRA):​c.727G>C​(p.Val243Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V243I) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PDGFRA NM_006206.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.33
• Publications: 0 publications found

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)

ENSG00000282278 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21084344).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006206.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDGFRA	NM_006206.6	MANE Select	c.727G>C	p.Val243Leu	missense	Exon 5 of 23	NP_006197.1
	PDGFRA	NM_001347828.2		c.802G>C	p.Val268Leu	missense	Exon 6 of 24	NP_001334757.1
	PDGFRA	NM_001347830.2		c.766G>C	p.Val256Leu	missense	Exon 5 of 23	NP_001334759.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDGFRA	ENST00000257290.10	TSL:1 MANE Select	c.727G>C	p.Val243Leu	missense	Exon 5 of 23	ENSP00000257290.5
	PDGFRA	ENST00000509092.5	TSL:1	n.545G>C		non_coding_transcript_exon	Exon 4 of 15
	PDGFRA	ENST00000509490.5	TSL:1	n.727G>C		non_coding_transcript_exon	Exon 5 of 18	ENSP00000424218.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.67
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.13	T
Eigen	Benign	0.14
Eigen_PC	Uncertain	0.27
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.83	T
M_CAP	Benign	0.032	D
MetaRNN	Benign	0.21	T
MetaSVM	Benign	-0.68	T
MutationAssessor	Benign	1.2	L
PhyloP100		5.3
PrimateAI	Uncertain	0.59	T
PROVEAN	Benign	-1.4	N
REVEL	Benign	0.069
Sift	Benign	0.21	T
Sift4G	Benign	0.34	T
Polyphen		0.029	B
Vest4		0.27
MutPred		0.44		Loss of sheet (P = 0.302)
MVP		0.43
MPC		0.36
ClinPred		0.83	D
GERP RS		5.3
Varity_R		0.20
gMVP		0.80
Mutation Taster		=71/29	polymorphism

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

Other links and lift over

dbSNP: rs774246071; hg19: chr4-55131184; COSMIC: COSV57264396;