Genetic Variant NM_001144952.2:c.6114T>C (chr17-73348650-A-G) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6BP7

The NM_001144952.2(SDK2):c.6114T>C(p.Pro2038Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000548 in 1,460,726 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 Likely benign (no stars).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000055 ( 1 hom. )

Consequence

SDK2
NM_001144952.2 synonymous

Scores

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: -8.09

Variant links:

Genes affected

SDK2 (HGNC:19308): (sidekick cell adhesion molecule 2) The protein encoded by this gene is a member of the immunoglobulin superfamily. The protein contains two immunoglobulin domains and thirteen fibronectin type III domains. Fibronectin type III domains are present in both extracellular and intracellular proteins and tandem repeats are known to contain binding sites for DNA, heparin and the cell surface. This protein, and a homologous mouse sequence, are very similar to the Drosophila sidekick gene product but the specific function of this superfamily member is not yet known. Evidence for alternative splicing at this gene locus has been observed but the full-length nature of additional variants has not yet been determined. [provided by RefSeq, Jul 2008]

SDK2 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.86).

BP6

Variant 17-73348650-A-G is Benign according to our data. Variant chr17-73348650-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 3035113.Status of the report is no_assertion_criteria_provided, 0 stars.

BP7

Synonymous conserved (PhyloP=-8.09 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SDK2	NM_001144952.2 link	c.6114T>C	p.Pro2038Pro	synonymous_variant	Exon 44 of 45	ENST00000392650.8	NP_001138424.1	Q58EX2-1
SDK2	XM_011524914.3 link	c.6057T>C	p.Pro2019Pro	synonymous_variant	Exon 43 of 44		XP_011523216.1	Q58EX2-3
SDK2	XM_011524915.3 link	c.6114T>C	p.Pro2038Pro	synonymous_variant	Exon 44 of 46		XP_011523217.1
SDK2	XM_047436313.1 link	c.6057T>C	p.Pro2019Pro	synonymous_variant	Exon 43 of 45		XP_047292269.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SDK2	ENST00000392650.8 link	c.6114T>C	p.Pro2038Pro	synonymous_variant	Exon 44 of 45	5	NM_001144952.2	ENSP00000376421.3	Q58EX2-1
SDK2	ENST00000424778.1 link	c.3585T>C	p.Pro1195Pro	synonymous_variant	Exon 26 of 27	5		ENSP00000407098.1	H7C2P2
SDK2	ENST00000410094.5 link	n.1187T>C		non_coding_transcript_exon_variant	Exon 9 of 10	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000240

AC:

AN:

250196

Hom.:

AF XY:

0.0000222

AC XY:

AN XY:

135292

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:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.00000548

AC:

AN:

1460726

Hom.:

Cov.:

AF XY:

0.00000826

AC XY:

AN XY:

726640

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:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

Cov.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

SDK2-related disorder

Benign:1

Aug 01, 2019

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.86

CADD

Benign

0.41

DANN

Benign

0.49

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