chr5-150115792-G-A

Position:

• chr5-150115792-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002609.4(PDGFRB):​c.3292C>T​(p.Arg1098Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,458,518 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: PDGFRB NM_002609.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.91

Genes affected

PDGFRB (HGNC:8804): (platelet derived growth factor receptor beta) The protein encoded by this gene is 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 (PDGFB or PDGFD) or a heterodimer (PDGFA and PDGFB). This gene is essential for normal development of the cardiovascular system and aids in rearrangement of the actin cytoskeleton. This gene is flanked on chromosome 5 by the genes for granulocyte-macrophage colony-stimulating factor and macrophage-colony stimulating factor receptor; all three genes may be implicated in the 5-q syndrome. A translocation between chromosomes 5 and 12, that fuses this gene to that of the ETV6 gene, results in chronic myeloproliferative disorder with eosinophilia. [provided by RefSeq, Aug 2017]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.17495155).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PDGFRB	NM_002609.4	c.3292C>T	p.Arg1098Trp	missense_variant	23/23	ENST00000261799.9
PDGFRB	NM_001355016.2	c.3100C>T	p.Arg1034Trp	missense_variant	22/22
PDGFRB	NM_001355017.2	c.2809C>T	p.Arg937Trp	missense_variant	23/23

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PDGFRB	ENST00000261799.9	c.3292C>T	p.Arg1098Trp	missense_variant	23/23	1	NM_002609.4	P1
PDGFRB	ENST00000520579.5	c.*2606C>T		3_prime_UTR_variant, NMD_transcript_variant	23/23	1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.0000121 AC: 3 AN: 247178 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 133972

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000547

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000180

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1458518 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 725378

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Alfa AF: 0.0000508 Hom.: 0

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.00 AC: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Infantile myofibromatosis;C1866182:Acroosteolysis-keloid-like lesions-premature aging syndrome;C3554321:Basal ganglia calcification, idiopathic, 4;C4225270:Skeletal overgrowth-craniofacial dysmorphism-hyperelastic skin-white matter lesions syndrome Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 21, 2021

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt PDGFRB protein function. This variant has not been reported in the literature in individuals affected with PDGFRB-related conditions. This variant is present in population databases (rs267600485, ExAC 0.002%). This sequence change replaces arginine with tryptophan at codon 1098 of the PDGFRB protein (p.Arg1098Trp). The arginine residue is moderately conserved and there is a moderate physicochemical difference between arginine and tryptophan. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.099
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.28	T
Eigen	Benign	-0.77
Eigen_PC	Benign	-0.83
FATHMM_MKL	Benign	0.41	N
LIST_S2	Uncertain	0.89	D
M_CAP	Uncertain	0.10	D
MetaRNN	Benign	0.17	T
MetaSVM	Benign	-0.88	T
MutationAssessor	Benign	1.1	L
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-0.51	N
REVEL	Benign	0.26
Sift	Benign	0.044	D
Sift4G	Uncertain	0.018	D
Polyphen		0.95	P
Vest4		0.18
MutPred		0.13		Gain of catalytic residue at R1098 (P = 0.1359);
MVP		0.47
MPC		0.67
ClinPred		0.20	T
GERP RS		2.3
Varity_R		0.041
gMVP		0.23

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

LitVar

Other links and lift over

dbSNP: rs267600485; hg19: chr5-149495355; COSMIC: COSV53832644; COSMIC: COSV53832644;