4-54263736-C-T

Variant names:

• chr4-54263736-C-T
• rs1249349361
• NM_006206.6:c.437C>T

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.437C>T​(p.Ala146Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,550 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. 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. A146D) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PDGFRA NM_006206.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.29
• Publications: 4 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: G2P, Ambry Genetics, Genomics England PanelApp
• 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=0.0687457).

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.437C>T	p.Ala146Val	missense	Exon 4 of 23	NP_006197.1	P16234-1
	PDGFRA	NM_001347828.2		c.512C>T	p.Ala171Val	missense	Exon 5 of 24	NP_001334757.1
	PDGFRA	NM_001347830.2		c.476C>T	p.Ala159Val	missense	Exon 4 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.437C>T	p.Ala146Val	missense	Exon 4 of 23	ENSP00000257290.5	P16234-1
	PDGFRA	ENST00000508170.5	TSL:1	c.437C>T	p.Ala146Val	missense	Exon 4 of 4	ENSP00000425648.1	P16234-2
	ENSG00000282278	ENST00000507166.5	TSL:2	c.1018-11189C>T		intron	N/A	ENSP00000423325.1	A0A0B4J203

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251262 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.0000993

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461550 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 727122

African (AFR) AF: 0.00 AC: 0 AN: 33468

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.0000383 AC: 1 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86248

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111722

Other (OTH) AF: 0.00 AC: 0 AN: 60382

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Gastrointestinal stromal tumor (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	17
DANN	Benign	0.90
DEOGEN2	Benign	0.050	T
Eigen	Benign	-0.80
Eigen_PC	Benign	-0.66
FATHMM_MKL	Benign	0.083	N
LIST_S2	Benign	0.76	T
M_CAP	Benign	0.0082	T
MetaRNN	Benign	0.069	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	0.070	N
PhyloP100		1.3
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-0.69	N
REVEL	Benign	0.033
Sift	Benign	0.27	T
Sift4G	Benign	0.39	T
Polyphen		0.0	B
Vest4		0.071
MutPred		0.42		Gain of sheet (P = 0.0344)
MVP		0.30
MPC		0.32
ClinPred		0.051	T
GERP RS		3.3
Varity_R		0.092
gMVP		0.73
Mutation Taster		=77/23	polymorphism

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

Other links and lift over

dbSNP: rs1249349361; hg19: chr4-55129903;