rs369842668

Positions:

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBS1_SupportingBS2

The NM_002609.4(PDGFRB):c.2023+5C>T variant causes a splice donor 5th base, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000268 in 1,604,778 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

PDGFRB
NM_002609.4 splice_donor_5th_base, intron

Scores

Splicing: ADA: 0.0001952

Clinical Significance

Uncertain significance criteria provided, single submitter U:1B:1

Conservation

PhyloP100: -4.43

Variant links:

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]

PDGFRB links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.83).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000138 (21/152318) while in subpopulation AFR AF= 0.000433 (18/41572). AF 95% confidence interval is 0.000279. There are 0 homozygotes in gnomad4. There are 7 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 21 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	MANE	Protein
PDGFRB	NM_002609.4 linkuse as main transcript	c.2023+5C>T	splice_donor_5th_base_variant, intron_variant	ENST00000261799.9	NP_002600.1
PDGFRB	NM_001355016.2 linkuse as main transcript	c.1831+5C>T	splice_donor_5th_base_variant, intron_variant		NP_001341945.1
PDGFRB	NM_001355017.2 linkuse as main transcript	c.1540+5C>T	splice_donor_5th_base_variant, intron_variant		NP_001341946.1

Ensembl

Gene	Transcript	HGVSc	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PDGFRB	ENST00000261799.9 linkuse as main transcript	c.2023+5C>T	splice_donor_5th_base_variant, intron_variant		1	NM_002609.4	ENSP00000261799	P1	P09619-1
PDGFRB	ENST00000520579.5 linkuse as main transcript	c.*1337+5C>T	splice_donor_5th_base_variant, intron_variant, NMD_transcript_variant		1		ENSP00000430026
PDGFRB	ENST00000520229.1 linkuse as main transcript	n.663C>T	non_coding_transcript_exon_variant	2/2	3

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152200

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000434

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000361

AC:

AN:

249538

Hom.:

AF XY:

0.0000296

AC XY:

AN XY:

134998

show subpopulations

Gnomad AFR exome

AF:

0.000493

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.0000151

AC:

AN:

1452460

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

723102

show subpopulations

Gnomad4 AFR exome

AF:

0.000300

Gnomad4 AMR exome

AF:

0.0000448

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000453

Gnomad4 OTH exome

AF:

0.0000499

GnomAD4 genome

AF:

0.000138

AC:

AN:

152318

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.000433

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000112

Hom.:

Bravo

AF:

0.000166

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, single submitter

LINK: link

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

Aug 09, 2022

This sequence change falls in intron 14 of the PDGFRB gene. It does not directly change the encoded amino acid sequence of the PDGFRB protein. It affects a nucleotide within the consensus splice site. This variant is present in population databases (rs369842668, gnomAD 0.03%). 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. Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. ClinVar contains an entry for this variant (Variation ID: 540599). This variant has not been reported in the literature in individuals affected with PDGFRB-related conditions. -

PDGFRB-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Aug 08, 2019

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.83

CADD

Benign

5.1

DANN

Benign

0.50

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00020

dbscSNV1_RF

Benign

0.0

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over