Genetic Variant SKI:p.Gly33Gly (chr1-2228865-C-T) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2BP4_StrongBP6_ModerateBP7

The NM_003036.4(SKI):c.99C>T(p.Gly33Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000782 in 1,278,572 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. G33G) has been classified as Benign.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 7.8e-7 ( 0 hom. )

Consequence

SKI
NM_003036.4 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.911

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

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

SKI links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.57).

BP6

Variant 1-2228865-C-T is Benign according to our data. Variant chr1-2228865-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 1937857.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=0.911 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SKI	NM_003036.4 link	c.99C>T	p.Gly33Gly	synonymous_variant	Exon 1 of 7	ENST00000378536.5	NP_003027.1
SKI	XM_005244775.4 link	c.99C>T	p.Gly33Gly	synonymous_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.99C>T	p.Gly33Gly	synonymous_variant	Exon 1 of 7	1	NM_003036.4	ENSP00000367797.4
SKI	ENST00000704337.1 link	n.137+1341C>T		intron_variant	Intron 1 of 3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.82e-7

AC:

AN:

1278572

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

631910

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26264

American (AMR)

AF:

0.00

AC:

AN:

26352

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21006

East Asian (EAS)

AF:

0.00

AC:

AN:

26448

South Asian (SAS)

AF:

0.00

AC:

AN:

71986

European-Finnish (FIN)

AF:

0.00

AC:

AN:

31660

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3720

European-Non Finnish (NFE)

AF:

9.80e-7

AC:

AN:

1020026

Other (OTH)

AF:

0.00

AC:

AN:

51110

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

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

Cov.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Shprintzen-Goldberg syndrome

Benign:1

Oct 26, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.57

CADD

Benign

(source)

DANN

Benign

0.95

PhyloP100

0.91

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.1

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over