rs17633132

Variant names:

• chr8-17642610-C-A
• rs17633132
• NM_001372073.1:c.940-3C>A

Your query was ambiguous. Multiple possible variants found:

• chr8-17642610-C-A
• chr8-17642610-C-G
• chr8-17642610-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001372073.1(PDGFRL):​c.940-3C>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000693 in 1,442,530 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 predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: PDGFRL NM_001372073.1 splice_region, intron
• Scores: Splicing: ADA: 0.9978
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.60
• Publications: 0 publications found

Genes affected

PDGFRL (HGNC:8805): (platelet derived growth factor receptor like) This gene encodes a protein with significant sequence similarity to the ligand binding domain of platelet-derived growth factor receptor beta. Mutations in this gene, or deletion of a chromosomal segment containing this gene, are associated with sporadic hepatocellular carcinomas, colorectal cancers, and non-small cell lung cancers. This suggests this gene product may function as a tumor suppressor. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PDGFRL	NM_001372073.1	c.940-3C>A		splice_region_variant, intron_variant	Intron 5 of 5	ENST00000251630.11	NP_001359002.1
PDGFRL	NM_006207.2	c.940-3C>A		splice_region_variant, intron_variant	Intron 6 of 6		NP_006198.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PDGFRL	ENST00000251630.11	c.940-3C>A		splice_region_variant, intron_variant	Intron 5 of 5	5	NM_001372073.1	ENSP00000251630.4
PDGFRL	ENST00000541323.1	c.940-3C>A		splice_region_variant, intron_variant	Intron 6 of 6	2		ENSP00000444211.1
PDGFRL	ENST00000523248.1	n.144-961C>A		intron_variant	Intron 1 of 1	3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.93e-7 AC: 1 AN: 1442530 Hom.: 0 Cov.: 28 AF XY: 0.00 AC XY: 0 AN XY: 719052

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33122

American (AMR) AF: 0.00 AC: 0 AN: 44624

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26020

East Asian (EAS) AF: 0.00 AC: 0 AN: 39588

South Asian (SAS) AF: 0.00 AC: 0 AN: 85812

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53392

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5638

European-Non Finnish (NFE) AF: 9.14e-7 AC: 1 AN: 1094610

Other (OTH) AF: 0.00 AC: 0 AN: 59724

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.31
CADD	Benign	16
DANN	Benign	0.94
PhyloP100		2.6

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.90
SpliceAI score (max)		0.53		Details are displayed if max score is > 0.2
DS_AL_spliceai		0.53		Position offset: 3

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs17633132; hg19: chr8-17500119;