21-43417676-C-T

Position:

chr21-43417676-C-T

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_173354.5(SIK1):c.1843G>A(p.Ala615Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00012 ( 2 hom., cov: 0)

Exomes 𝑓: 0.000095 ( 12 hom. )

Failed GnomAD Quality Control

Consequence

SIK1
NM_173354.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 0.468

Variant links:

Genes affected

SIK1 (HGNC:11142): (salt inducible kinase 1) This gene encodes a serine/threonine protein kinase that contains a ubiquitin-associated (UBA) domain. The encoded protein is a member of the adenosine monophosphate-activated kinase (AMPK) subfamily of kinases that play a role in conserved signal transduction pathways. A mutation in this gene is associated with early infantile epileptic encephalopathy 30. [provided by RefSeq, Nov 2016]

SIK1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.04920712).

BP6

Variant 21-43417676-C-T is Benign according to our data. Variant chr21-43417676-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 577708.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000117 (5/42608) while in subpopulation AMR AF= 0.00078 (2/2564). AF 95% confidence interval is 0.000138. There are 2 homozygotes in gnomad4. There are 2 alleles in male gnomad4 subpopulation. Median coverage is 0. This position pass quality control queck.

BS2

High AC in GnomAd4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SIK1	NM_173354.5 linkuse as main transcript	c.1843G>A	p.Ala615Thr	missense_variant	13/14	ENST00000270162.8	NP_775490.2
SIK1	XM_011529474.3 linkuse as main transcript	c.1696G>A	p.Ala566Thr	missense_variant	12/13		XP_011527776.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SIK1	ENST00000270162.8 linkuse as main transcript	c.1843G>A	p.Ala615Thr	missense_variant	13/14	1	NM_173354.5	ENSP00000270162	P1

Frequencies

GnomAD3 genomes

AF:

0.000117

AC:

AN:

42608

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000780

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000189

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000286

AC:

AN:

209984

Hom.:

AF XY:

0.0000523

AC XY:

AN XY:

114628

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:

0.0000369

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000438

Gnomad OTH exome

AF:

0.000189

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000945

AC:

AN:

338506

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

167564

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:

0.0000469

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000879

Gnomad4 OTH exome

AF:

0.000251

GnomAD4 genome

AF:

0.000117

AC:

AN:

42608

Hom.:

Cov.:

AF XY:

0.000101

AC XY:

AN XY:

19864

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000780

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000189

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000238

Hom.:

ExAC

AF:

0.0000420

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

- -

Developmental and epileptic encephalopathy, 30

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 28, 2023

This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 615 of the SIK1 protein (p.Ala615Thr). This variant is present in population databases (rs777106028, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with SIK1-related conditions. ClinVar contains an entry for this variant (Variation ID: 577708). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt SIK1 protein function with a negative predictive value of 95%. 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. -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 15, 2021

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.071

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.55

CADD

Benign

8.4

DANN

Benign

0.91

DEOGEN2

Benign

0.077

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.75

LIST_S2

Benign

0.71

M_CAP

Benign

0.018

MetaRNN

Benign

0.049

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.0

MutationTaster

Benign

1.0

PrimateAI

Benign

0.43

PROVEAN

Benign

-0.42

REVEL

Benign

0.097

Sift

Uncertain

0.0060

Sift4G

Benign

0.56

Polyphen

0.075

Vest4

0.039

MutPred

0.14

Gain of catalytic residue at A615 (P = 0.0388);

MVP

0.29

MPC

0.14

ClinPred

0.032

GERP RS

-5.4

Varity_R

0.053

gMVP

0.11

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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