rs139913632

Positions:

• chr4-54264951-C-G
• chr4-54264951-C-T

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PM2 PP2 BP4_Strong

The NM_006206.6(PDGFRA):​c.661C>G​(p.Leu221Val) variant causes a missense 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. 16/21 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. L221F) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PDGFRA NM_006206.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.908

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 Likely_benign. Variant got -1 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=0.045425385).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PDGFRA	NM_006206.6	c.661C>G	p.Leu221Val	missense_variant	5/23	ENST00000257290.10	NP_006197.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PDGFRA	ENST00000257290.10	c.661C>G	p.Leu221Val	missense_variant	5/23	1	NM_006206.6	ENSP00000257290	P1
PDGFRA	ENST00000508170.5	c.*995C>G		3_prime_UTR_variant	4/4	1		ENSP00000425648
PDGFRA	ENST00000509092.5	n.479C>G		non_coding_transcript_exon_variant	4/15	1
PDGFRA	ENST00000509490.5	c.661C>G	p.Leu221Val	missense_variant, NMD_transcript_variant	5/18	1		ENSP00000424218

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.066
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	14
DANN	Benign	0.70
DEOGEN2	Benign	0.068	T
Eigen	Benign	-0.68
Eigen_PC	Benign	-0.54
FATHMM_MKL	Benign	0.20	N
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.015	T
MetaRNN	Benign	0.045	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	0.0	N
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.27	T
PROVEAN	Benign	0.80	N
REVEL	Benign	0.21
Sift	Benign	0.61	T
Sift4G	Benign	0.31	T
Polyphen		0.0010	B
Vest4		0.095
MutPred		0.36		Loss of stability (P = 0.0576);
MVP		0.26
MPC		0.33
ClinPred		0.13	T
GERP RS		4.4
Varity_R		0.11
gMVP		0.52

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		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: chr4-55131118;