21-43426136-C-A

Variant names:

• chr21-43426136-C-A
• rs3746951
• NM_173354.5:c.43G>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_173354.5(SIK1):​c.43G>T​(p.Gly15Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G15S) has been classified as Benign.

• Frequency: Genomes: not found (cov: 0)
• Consequence: SIK1 NM_173354.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.03
• Publications: 26 publications found

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 Gene-Disease associations (from GenCC):

• developmental and epileptic encephalopathy, 30

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• genetic developmental and epileptic encephalopathy

  Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, ClinGen, PanelApp Australia
• early myoclonic encephalopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• infantile spasms

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• generalized epilepsy

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.2363278).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_173354.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SIK1	NM_173354.5	MANE Select	c.43G>T	p.Gly15Cys	missense	Exon 2 of 14	NP_775490.2	P57059

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SIK1	ENST00000270162.8	TSL:1 MANE Select	c.43G>T	p.Gly15Cys	missense	Exon 2 of 14	ENSP00000270162.6	P57059
	SIK1	ENST00000880890.1		c.43G>T	p.Gly15Cys	missense	Exon 2 of 13	ENSP00000550949.1
	SIK1	ENST00000880889.1		c.43G>T	p.Gly15Cys	missense	Exon 2 of 13	ENSP00000550948.1

Frequencies

GnomAD3 genomes Cov.: 0

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 0

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Developmental and epileptic encephalopathy, 30 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.079	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	21
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.46	T
Eigen	Benign	-0.092
Eigen_PC	Benign	-0.17
FATHMM_MKL	Benign	0.35	N
LIST_S2	Benign	0.56	T
M_CAP	Uncertain	0.16	D
MetaRNN	Benign	0.24	T
MetaSVM	Benign	-0.62	T
MutationAssessor	Benign	1.0	L
PhyloP100		1.0
PrimateAI	Uncertain	0.71	T
PROVEAN	Benign	-2.0	N
REVEL	Benign	0.14
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.010	D
Polyphen		0.99	D
Vest4		0.18
MutPred		0.38		Loss of disorder (P = 0.0354)
MVP		0.31
MPC		2.0
ClinPred		0.59	D
GERP RS		2.4
Varity_R		0.32
gMVP		0.37
Mutation Taster		=94/6	polymorphism

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

Other links and lift over

dbSNP: rs3746951; hg19: chr21-44846016;