17-73348594-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP6

The NM_001144952.2(SDK2):​c.6165+5G>C variant causes a splice donor 5th base, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000132 in 1,611,896 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely benign (no stars).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

SDK2
NM_001144952.2 splice_donor_5th_base, intron

Scores

2
Splicing: ADA: 0.9971
2

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: 2.62
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP6
Variant 17-73348594-C-G is Benign according to our data. Variant chr17-73348594-C-G is described in ClinVar as [Likely_benign]. Clinvar id is 3030467.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SDK2NM_001144952.2 linkuse as main transcriptc.6165+5G>C splice_donor_5th_base_variant, intron_variant ENST00000392650.8 NP_001138424.1
SDK2XM_011524914.3 linkuse as main transcriptc.6108+5G>C splice_donor_5th_base_variant, intron_variant XP_011523216.1
SDK2XM_011524915.3 linkuse as main transcriptc.6165+5G>C splice_donor_5th_base_variant, intron_variant XP_011523217.1
SDK2XM_047436313.1 linkuse as main transcriptc.6108+5G>C splice_donor_5th_base_variant, intron_variant XP_047292269.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SDK2ENST00000392650.8 linkuse as main transcriptc.6165+5G>C splice_donor_5th_base_variant, intron_variant 5 NM_001144952.2 ENSP00000376421 P1Q58EX2-1
SDK2ENST00000424778.1 linkuse as main transcriptc.3636+5G>C splice_donor_5th_base_variant, intron_variant 5 ENSP00000407098
SDK2ENST00000410094.5 linkuse as main transcriptn.1238+5G>C splice_donor_5th_base_variant, intron_variant, non_coding_transcript_variant 5

Frequencies

GnomAD3 genomes
AF:
0.000131
AC:
20
AN:
152250
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
Gnomad ASJ
AF:
0.00461
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.000249
AC:
62
AN:
248722
Hom.:
0
AF XY:
0.000260
AC XY:
35
AN XY:
134560
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000870
Gnomad ASJ exome
AF:
0.00460
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000978
Gnomad OTH exome
AF:
0.000329
GnomAD4 exome
AF:
0.000132
AC:
192
AN:
1459646
Hom.:
0
Cov.:
31
AF XY:
0.000149
AC XY:
108
AN XY:
726040
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000671
Gnomad4 ASJ exome
AF:
0.00502
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000279
Gnomad4 OTH exome
AF:
0.000448
GnomAD4 genome
AF:
0.000131
AC:
20
AN:
152250
Hom.:
0
Cov.:
33
AF XY:
0.0000941
AC XY:
7
AN XY:
74380
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.0000654
Gnomad4 ASJ
AF:
0.00461
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.000478
Alfa
AF:
0.000685
Hom.:
0
Bravo
AF:
0.000132
EpiCase
AF:
0.0000545
EpiControl
AF:
0.000119

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

SDK2-related disorder Benign:1
Likely benign, no assertion criteria providedclinical testingPreventionGenetics, part of Exact SciencesFeb 26, 2022This 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
-0.23
CADD
Benign
22
DANN
Benign
0.97

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
1.0
dbscSNV1_RF
Pathogenic
0.88
SpliceAI score (max)
0.010
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.

Other links and lift over

dbSNP: rs374117631; hg19: chr17-71344733; API