4-54274577-G-A

Variant names:

• chr4-54274577-G-A
• rs779575357
• NM_006206.6:c.1605G>A

Variant summary

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

The NM_006206.6(PDGFRA):​c.1605G>A​(p.Leu535Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. L535L) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: PDGFRA NM_006206.6 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.43
• 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 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDGFRA	NM_006206.6	MANE Select	c.1605G>A	p.Leu535Leu	synonymous	Exon 11 of 23	NP_006197.1
	PDGFRA	NM_001347828.2		c.1680G>A	p.Leu560Leu	synonymous	Exon 12 of 24	NP_001334757.1
	PDGFRA	NM_001347830.2		c.1644G>A	p.Leu548Leu	synonymous	Exon 11 of 23	NP_001334759.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDGFRA	ENST00000257290.10	TSL:1 MANE Select	c.1605G>A	p.Leu535Leu	synonymous	Exon 11 of 23	ENSP00000257290.5
	ENSG00000282278	ENST00000507166.5	TSL:2	c.1018-348G>A		intron	N/A	ENSP00000423325.1
	PDGFRA	ENST00000509092.5	TSL:1	n.1423G>A		non_coding_transcript_exon	Exon 10 of 15

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.42
CADD	Benign	8.1
DANN	Benign	0.71
PhyloP100		3.4
Mutation Taster		=96/4	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.26		Details are displayed if max score is > 0.2
DS_AL_spliceai		0.26		Position offset: -46

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs779575357; hg19: chr4-55140744; COSMIC: COSV57268900; COSMIC: COSV57268900;