10-101828452-G-C

Position:

• chr10-101828452-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_173191.3(KCNIP2):​c.426C>G​(p.Ser142Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: KCNIP2 NM_173191.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.27

Genes affected

KCNIP2 (HGNC:15522): (potassium voltage-gated channel interacting protein 2) This gene encodes a member of the family of voltage-gated potassium (Kv) channel-interacting proteins (KCNIPs), which belongs to the recoverin branch of the EF-hand superfamily. Members of the KCNIP family are small calcium binding proteins. They all have EF-hand-like domains, and differ from each other in the N-terminus. They are integral subunit components of native Kv4 channel complexes. They may regulate A-type currents, and hence neuronal excitability, in response to changes in intracellular calcium. Multiple alternatively spliced transcript variants encoding distinct isoforms have been identified from this gene. [provided by RefSeq, Jul 2008]

KCNIP2-AS1 (HGNC:48680): (KCNIP2 antisense RNA 1)

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KCNIP2	NM_173191.3	c.426C>G	p.Ser142Arg	missense_variant	6/10	ENST00000356640.7
KCNIP2-AS1	NR_045118.1	n.533G>C		non_coding_transcript_exon_variant	3/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KCNIP2	ENST00000356640.7	c.426C>G	p.Ser142Arg	missense_variant	6/10	1	NM_173191.3
KCNIP2-AS1	ENST00000412353.3	n.828G>C		non_coding_transcript_exon_variant	3/3	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 03, 2023

The c.471C>G (p.S157R) alteration is located in exon 6 (coding exon 6) of the KCNIP2 gene. This alteration results from a C to G substitution at nucleotide position 471, causing the serine (S) at amino acid position 157 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.90
BayesDel_addAF	Uncertain	0.086	D
BayesDel_noAF	Benign	-0.11
CADD	Uncertain	24
DANN	Uncertain	0.99
Eigen	Uncertain	0.33
Eigen_PC	Uncertain	0.35
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.87	D;D;D;D;D;D;D;D
M_CAP	Benign	0.038	D
MetaRNN	Uncertain	0.58	D;D;D;D;D;D;D;D
MetaSVM	Benign	-0.88	T
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D;D
PrimateAI	Uncertain	0.77	T
PROVEAN	Uncertain	-3.8	D;D;D;D;.;D;D;D
REVEL	Benign	0.22
Sift	Uncertain	0.0010	D;D;D;D;.;D;D;D
Sift4G	Uncertain	0.017	D;D;D;D;.;D;D;D
Polyphen		0.81, 0.87, 0.14, 0.93, 0.68	.;P;P;.;.;B;P;P
Vest4		0.46
MutPred		0.42		.;.;Gain of catalytic residue at S142 (P = 0.0214);.;.;.;.;.;
MVP		0.52
MPC		1.7
ClinPred		0.99	D
GERP RS		4.3
Varity_R		0.78
gMVP		0.51

Splicing

Name	Calibrated prediction	Score	Prediction
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

No publications associated with this variant yet.

Other links and lift over

hg19: chr10-103588209;