15-38349522-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_152594.3(SPRED1):c.683G>A(p.Arg228Lys) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000626 in 1,597,778 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 19/24 in silico tools predict 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R228S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

SPRED1
NM_152594.3 missense, splice_region

Scores

Splicing: ADA: 0.0002078

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.631

Publications

0 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06554058).

BS2

High AC in GnomAdExome4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPRED1	NM_152594.3 link	c.683G>A	p.Arg228Lys	missense_variant, splice_region_variant	Exon 6 of 7	ENST00000299084.9	NP_689807.1	Q7Z699

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPRED1	ENST00000299084.9 link	c.683G>A	p.Arg228Lys	missense_variant, splice_region_variant	Exon 6 of 7	1	NM_152594.3	ENSP00000299084.4		Q7Z699

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151880

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000622

AC:

AN:

1445898

Hom.:

Cov.:

AF XY:

0.00000278

AC XY:

AN XY:

720308

show subpopulations

African (AFR)

AF:

0.0000302

AC:

AN:

33120

American (AMR)

AF:

0.0000449

AC:

AN:

44564

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25946

East Asian (EAS)

AF:

0.00

AC:

AN:

39492

South Asian (SAS)

AF:

0.00

AC:

AN:

85858

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53266

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5732

European-Non Finnish (NFE)

AF:

0.00000546

AC:

AN:

1098164

Other (OTH)

AF:

0.00

AC:

AN:

59756

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.497

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000658

AC:

AN:

151880

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74144

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41364

American (AMR)

AF:

0.00

AC:

AN:

15214

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3462

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10574

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67968

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000227

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Legius syndrome

Uncertain:1

Mar 25, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with lysine, which is basic and polar, at codon 228 of the SPRED1 protein (p.Arg228Lys). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with SPRED1-related conditions. ClinVar contains an entry for this variant (Variation ID: 575146). Advanced modeling performed at Invitae incorporating data from internal and/or published experimental studies (Invitae) indicates that this missense variant is not expected to disrupt SPRED1 function with a negative predictive value of 95%. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.062

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.44

CADD

Benign

(source)

DANN

Benign

0.94

DEOGEN2

Benign

0.065

Eigen

Benign

-0.72

Eigen_PC

Benign

-0.49

FATHMM_MKL

Benign

0.61

LIST_S2

Benign

0.37

M_CAP

Benign

0.012

MetaRNN

Benign

0.066

MetaSVM

Benign

-0.92

MutationAssessor

Benign

0.14

PhyloP100

0.63

PrimateAI

Benign

0.37

PROVEAN

Benign

-0.15

REVEL

Benign

0.25

Sift

Benign

0.91

Sift4G

Benign

1.0

Polyphen

0.0

Vest4

0.10

MutPred

0.46

Loss of solvent accessibility (P = 0.001);

MVP

0.38

MPC

0.34

ClinPred

0.074

GERP RS

2.1

Varity_R

0.040

gMVP

0.36

Mutation Taster

=92/8

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00021

dbscSNV1_RF

Benign

0.046

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

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over