Genetic Variant SP8:p.Arg504Cys (chr7-20784307-G-A) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_182700.6(SP8):c.1510C>T(p.Arg504Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00106 in 1,497,566 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00068 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0011 ( 1 hom. )

Consequence

SP8
NM_182700.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.31

Variant links:

Genes affected

SP8 (HGNC:19196): (Sp8 transcription factor) The protein encoded by this gene is an SP family transcription factor that in mouse has been shown to be essential for proper limb development. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2011]

SP8 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06655374).

BS2

High AC in GnomAd4 at 103 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SP8	NM_182700.6 link	c.1510C>T	p.Arg504Cys	missense_variant	Exon 2 of 2	ENST00000418710.3	NP_874359.2	Q8IXZ3-4A8K350
SP8	NM_198956.4 link	c.1456C>T	p.Arg486Cys	missense_variant	Exon 3 of 3		NP_945194.1	Q8IXZ3-3A8K350

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SP8	ENST00000418710.3 link	c.1510C>T	p.Arg504Cys	missense_variant	Exon 2 of 2	1	NM_182700.6	ENSP00000408792.2		Q8IXZ3-4
SP8	ENST00000361443.4 link	c.1456C>T	p.Arg486Cys	missense_variant	Exon 3 of 3	1		ENSP00000354482.4		Q8IXZ3-3

Frequencies

GnomAD3 genomes

AF:

0.000677

AC:

103

AN:

152068

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

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:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00146

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000477

AC:

AN:

100666

Hom.:

AF XY:

0.000372

AC XY:

AN XY:

56490

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000155

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000191

Gnomad NFE exome

AF:

0.00111

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.00111

AC:

1491

AN:

1345388

Hom.:

Cov.:

AF XY:

0.00108

AC XY:

718

AN XY:

663786

show subpopulations

Gnomad4 AFR exome

AF:

0.000145

Gnomad4 AMR exome

AF:

0.000162

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000301

Gnomad4 NFE exome

AF:

0.00135

Gnomad4 OTH exome

AF:

0.000625

GnomAD4 genome

AF:

0.000677

AC:

103

AN:

152178

Hom.:

Cov.:

AF XY:

0.000605

AC XY:

AN XY:

74412

show subpopulations

Gnomad4 AFR

AF:

0.0000722

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.00146

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00101

Hom.:

Bravo

AF:

0.000699

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000479

AC:

ExAC

AF:

0.000303

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 09, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1510C>T (p.R504C) alteration is located in exon 2 (coding exon 2) of the SP8 gene. This alteration results from a C to T substitution at nucleotide position 1510, causing the arginine (R) at amino acid position 504 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.20

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.20

.;.;T

Eigen

Uncertain

0.46

Eigen_PC

Uncertain

0.47

FATHMM_MKL

Uncertain

0.78

LIST_S2

Uncertain

0.89

D;D;D

M_CAP

Benign

0.020

MetaRNN

Benign

0.067

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.0

.;.;L

PrimateAI

Uncertain

0.78

PROVEAN

Benign

-2.3

.;N;N

REVEL

Benign

0.12

Sift

Uncertain

0.0010

.;D;D

Sift4G

Uncertain

0.055

T;D;T

Polyphen

1.0

.;.;D

Vest4

0.34

MVP

0.38

ClinPred

0.060

GERP RS

4.8

Varity_R

0.21

gMVP

0.86

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

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