Genetic Variant SPRED1:p.Gln141* (chr15-38324807-C-T) – ACMG Classification: Pathogenic (13 pts)

Variant summary

Our verdict is Pathogenic. The variant received 13 ACMG points: 13P and 0B. PVS1PM2PP3PP5_Moderate

The NM_152594.3(SPRED1):c.421C>T(p.Gln141*) variant causes a stop gained, splice region change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)

Consequence

SPRED1
NM_152594.3 stop_gained, splice_region

Scores

Splicing: ADA: 0.9965

Clinical Significance

Pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 3.70

Publications

1 publications found

Variant links:

Genes affected

SPRED1 (HGNC:20249): (sprouty related EVH1 domain containing 1) The protein encoded by this gene is a member of the Sprouty family of proteins and is phosphorylated by tyrosine kinase in response to several growth factors. The encoded protein can act as a homodimer or as a heterodimer with SPRED2 to regulate activation of the MAP kinase cascade. Defects in this gene are a cause of neurofibromatosis type 1-like syndrome (NFLS). [provided by RefSeq, Jul 2008]

SPRED1 Gene-Disease associations (from GenCC):

Legius syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Genomics England PanelApp, ClinGen, PanelApp Australia, G2P, Labcorp Genetics (formerly Invitae)

SPRED1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 13 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. Scorers claiming Benign: max_spliceai.

PP5

Variant 15-38324807-C-T is Pathogenic according to our data. Variant chr15-38324807-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 409627.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPRED1	NM_152594.3 link	c.421C>T	p.Gln141*	stop_gained, splice_region_variant	Exon 4 of 7	ENST00000299084.9	NP_689807.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
SPRED1	ENST00000299084.9 link	c.421C>T	p.Gln141*	stop_gained, splice_region_variant	Exon 4 of 7	1	NM_152594.3	ENSP00000299084.4
SPRED1	ENST00000561317.1 link	c.358C>T	p.Gln120*	stop_gained, splice_region_variant	Exon 5 of 6	4		ENSP00000453680.1
SPRED1	ENST00000561205.1 link	n.759C>T		splice_region_variant, non_coding_transcript_exon_variant	Exon 4 of 5	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

248572

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Legius syndrome

Pathogenic:1

Sep 05, 2016

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

For these reasons, this variant has been classified as Pathogenic. This sequence change creates a premature translational stop signal at codon 141 (p.Gln141*) of the SPRED1 gene. It is expected to result in an absent or disrupted protein product. While this particular variant has not been reported in the literature, loss-of-function variants in SPRED1 are known to be pathogenic (PMID: 17704776). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.63

BayesDel_noAF

Pathogenic

0.62

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Pathogenic

0.80

Eigen_PC

Uncertain

0.64

FATHMM_MKL

Uncertain

0.95

PhyloP100

3.7

Vest4

0.80

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Mutation Taster

=4/196

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.92

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over