rs778291636

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM1BP4BP6BS2

The NM_003036.4(SKI):c.241C>G(p.Pro81Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000764 in 1,570,524 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P81Q) has been classified as Uncertain significance.

Frequency

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

Exomes 𝑓: 0.0000078 ( 1 hom. )

Consequence

SKI
NM_003036.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 3.60

Variant links:

Genes affected

SKI (HGNC:10896): (SKI proto-oncogene) This gene encodes the nuclear protooncogene protein homolog of avian sarcoma viral (v-ski) oncogene. It functions as a repressor of TGF-beta signaling, and may play a role in neural tube development and muscle differentiation. [provided by RefSeq, Oct 2009]

SKI links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 12 uncertain in NM_003036.4

BP4

Computational evidence support a benign effect (MetaRNN=0.27227074).

BP6

Variant 1-2229007-C-G is Benign according to our data. Variant chr1-2229007-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 583134.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

BS2

High AC in GnomAdExome4 at 11 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SKI	NM_003036.4 link	c.241C>G	p.Pro81Ala	missense_variant	Exon 1 of 7	ENST00000378536.5	NP_003027.1	P12755
SKI	XM_005244775.4 link	c.241C>G	p.Pro81Ala	missense_variant	Exon 1 of 7		XP_005244832.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SKI	ENST00000378536.5 link	c.241C>G	p.Pro81Ala	missense_variant	Exon 1 of 7	1	NM_003036.4	ENSP00000367797.4		P12755
SKI	ENST00000704337.1 link	n.137+1483C>G		intron_variant	Intron 1 of 3

Frequencies

GnomAD3 genomes

AF:

0.00000660

AC:

AN:

151426

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000268

AC:

AN:

186354

Hom.:

AF XY:

0.0000481

AC XY:

AN XY:

103952

show subpopulations

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 SAS exome

AF:

0.000187

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000775

AC:

AN:

1419098

Hom.:

Cov.:

AF XY:

0.0000128

AC XY:

AN XY:

704470

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000108

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000170

GnomAD4 genome

AF:

0.00000660

AC:

AN:

151426

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

73960

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000340

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Shprintzen-Goldberg syndrome

Uncertain:1

May 30, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces proline with alanine at codon 81 of the SKI protein (p.Pro81Ala). The proline residue is moderately conserved and there is a small physicochemical difference between proline and alanine. This variant is present in population databases (rs778291636, ExAC 0.05%). This variant has not been reported in the literature in individuals with SKI-related disease. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. 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. -

not provided

Benign:1

Sep 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

SKI: PP2, PP3, BS1 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.070

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.18

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.41

Eigen

Benign

0.15

Eigen_PC

Benign

0.13

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.79

M_CAP

Pathogenic

0.62

MetaRNN

Benign

0.27

MetaSVM

Uncertain

0.34

MutationAssessor

Benign

0.81

PrimateAI

Pathogenic

0.86

PROVEAN

Uncertain

-2.4

REVEL

Uncertain

0.43

Sift

Uncertain

0.021

Sift4G

Uncertain

0.024

Polyphen

0.90

Vest4

0.33

MutPred

0.54

Loss of catalytic residue at P81 (P = 0.0103);

MVP

0.69

MPC

1.7

ClinPred

0.24

GERP RS

2.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

3.0

Varity_R

0.22

gMVP

0.44

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