rs1555891321

Variant names:

• chr21-43421049-G-C
• rs1555891321
• NM_173354.5:c.709C>G

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4

The NM_173354.5(SIK1):​c.709C>G​(p.Leu237Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. 13/22 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. L237P) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 0)
• Consequence: SIK1 NM_173354.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.06
• Publications: 0 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 -1 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.41067562).

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.709C>G	p.Leu237Val	missense	Exon 7 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.709C>G	p.Leu237Val	missense	Exon 7 of 14	ENSP00000270162.6	P57059
	SIK1	ENST00000880890.1		c.709C>G	p.Leu237Val	missense	Exon 7 of 13	ENSP00000550949.1
	SIK1	ENST00000880889.1		c.709C>G	p.Leu237Val	missense	Exon 7 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	0.15
BayesDel_addAF	Benign	-0.058	T
BayesDel_noAF	Benign	-0.32
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.31	T
Eigen	Benign	-0.038
Eigen_PC	Benign	0.057
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Pathogenic	0.97	D
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.41	T
MetaSVM	Benign	-0.70	T
MutationAssessor	Benign	1.1	L
PhyloP100		3.1
PrimateAI	Uncertain	0.53	T
PROVEAN	Uncertain	-2.4	N
REVEL	Benign	0.18
Sift	Benign	0.030	D
Sift4G	Uncertain	0.0070	D
Polyphen		0.47	P
Vest4		0.48
MutPred		0.56		Loss of catalytic residue at L237 (P = 0.0812)
MVP		0.43
MPC		0.60
ClinPred		0.80	D
GERP RS		2.6
Varity_R		0.33
gMVP		0.33
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: rs1555891321; hg19: chr21-44840929;