rs781356492

Positions:

• chr4-54278482-T-A
• chr4-54278482-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_006206.6(PDGFRA):​c.2123T>A​(p.Phe708Tyr) 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. 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. F708S) 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: 5.95

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PDGFRA. . Gene score misZ 1.9401 (greater than the threshold 3.09). Trascript score misZ 3.4078 (greater than threshold 3.09). GenCC has associacion of gene with congenital heart disease, polyps, multiple and recurrent inflammatory fibroid, gastrointestinal, gastrointestinal stromal tumor, isolated cleft palate.
• BP4: Computational evidence support a benign effect (MetaRNN=0.39560455).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PDGFRA	NM_006206.6	c.2123T>A	p.Phe708Tyr	missense_variant	15/23	ENST00000257290.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PDGFRA	ENST00000257290.10	c.2123T>A	p.Phe708Tyr	missense_variant	15/23	1	NM_006206.6	P1
PDGFRA	ENST00000507536.1	n.549T>A		non_coding_transcript_exon_variant	3/5	1
PDGFRA	ENST00000509092.5	n.1941T>A		non_coding_transcript_exon_variant	14/15	1
PDGFRA	ENST00000509490.5	c.2123T>A	p.Phe708Tyr	missense_variant, NMD_transcript_variant	15/18	1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.56
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.030
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.23	.;T
Eigen	Benign	0.15
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Benign	0.85	T;D
M_CAP	Benign	0.053	D
MetaRNN	Benign	0.40	T;T
MetaSVM	Benign	-0.54	T
MutationAssessor	Benign	1.4	.;L
MutationTaster	Benign	0.68	N;D
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	0.26	N;N
REVEL	Uncertain	0.45
Sift	Benign	1.0	T;T
Sift4G	Benign	1.0	T;T
Polyphen		0.99	.;D
Vest4		0.75
MutPred		0.47		.;Gain of phosphorylation at F708 (P = 0.0172);
MVP		0.65
MPC		1.1
ClinPred		0.89	D
GERP RS		6.1
Varity_R		0.12
gMVP		0.60

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-55144649;