dbSNP rs863223722: SKI:p.Thr180Lys (chr1-2229305-C-A) – ACMG Classification: Pathogenic (16 pts)

Variant summary

Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM1PM2PM5PP3_ModeratePP5_Very_Strong

The NM_003036.4(SKI):c.539C>A(p.Thr180Lys) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T180M) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

SKI
NM_003036.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:2

Conservation

PhyloP100: 5.83

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 Pathogenic. Variant got 16 ACMG points.

PM1

In a helix (size 11) in uniprot entity SKI_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_003036.4

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr1-2229305-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 213684.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.896

PP5

Variant 1-2229305-C-A is Pathogenic according to our data. Variant chr1-2229305-C-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 495053.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-2229305-C-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SKI	NM_003036.4 link	c.539C>A	p.Thr180Lys	missense_variant	Exon 1 of 7	ENST00000378536.5	NP_003027.1	P12755
SKI	XM_005244775.4 link	c.539C>A	p.Thr180Lys	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.539C>A	p.Thr180Lys	missense_variant	Exon 1 of 7	1	NM_003036.4	ENSP00000367797.4		P12755
SKI	ENST00000704337.1 link	n.137+1781C>A		intron_variant	Intron 1 of 3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1443406

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

716886

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Disproportionate tall stature

Pathogenic:1

Jun 12, 2017

Center of Genomic medicine, Geneva, University Hospital of Geneva

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant in the SKI gene was identified in a female patient with suspicion of Marfan syndrome and familial migraine. There were no variants in the FBN1, TGFBR1 and TGFBR2 genes, as assessed by exome sequencing (NGS) and MLPA analysis -

not provided

Pathogenic:1

Aug 30, 2024

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 31980905) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Uncertain

0.090

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.91

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Uncertain

0.86

LIST_S2

Pathogenic

0.99

M_CAP

Uncertain

0.23

MetaRNN

Pathogenic

0.90

MetaSVM

Uncertain

0.32

MutationAssessor

Benign

1.8

PrimateAI

Pathogenic

0.96

PROVEAN

Pathogenic

-5.4

REVEL

Pathogenic

0.76

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.80

MutPred

0.58

Gain of ubiquitination at T180 (P = 0.0131);

MVP

0.88

MPC

3.0

ClinPred

1.0

GERP RS

4.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.97

gMVP

0.97

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