Genetic Variant KIAA1958:p.Ile280Thr (chr9-112574919-T-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_133465.4(KIAA1958):c.839T>C(p.Ile280Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,794 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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. I280V) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

KIAA1958
NM_133465.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.17

Publications

0 publications found

Variant links:

Genes affected

KIAA1958 (HGNC:23427): (KIAA1958)

KIAA1958 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.04395777).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIAA1958	NM_133465.4 link	c.839T>C	p.Ile280Thr	missense_variant	Exon 2 of 4	ENST00000337530.11	NP_597722.1	Q8N8K9-1
KIAA1958	NM_001287036.2 link	c.839T>C	p.Ile280Thr	missense_variant	Exon 2 of 5		NP_001273965.1	Q8N8K9-3
KIAA1958	NM_001287038.2 link	c.839T>C	p.Ile280Thr	missense_variant	Exon 2 of 4		NP_001273967.1	Q8N8K9
KIAA1958	XM_011518311.3 link	c.839T>C	p.Ile280Thr	missense_variant	Exon 2 of 3		XP_011516613.1	Q8N8K9-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
KIAA1958	ENST00000337530.11 link	c.839T>C	p.Ile280Thr	missense_variant	Exon 2 of 4	1	NM_133465.4	ENSP00000336940.6	Q8N8K9-1
KIAA1958	ENST00000536272.5 link	c.839T>C	p.Ile280Thr	missense_variant	Exon 2 of 5	1		ENSP00000440504.1	Q8N8K9-3
KIAA1958	ENST00000374244.3 link	c.839T>C	p.Ile280Thr	missense_variant	Exon 2 of 3	5		ENSP00000363362.3	Q8N8K9-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250538

AF XY:

0.00000739

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000885

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461794

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727182

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86244

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111958

Other (OTH)

AF:

0.00

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 08, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.839T>C (p.I280T) alteration is located in exon 2 (coding exon 1) of the KIAA1958 gene. This alteration results from a T to C substitution at nucleotide position 839, causing the isoleucine (I) at amino acid position 280 to be replaced by a threonine (T). 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

Benign

0.076

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.67

CADD

Benign

(source)

DANN

Benign

0.65

DEOGEN2

Benign

0.022

T;.;.

Eigen

Benign

-0.90

Eigen_PC

Benign

-0.78

FATHMM_MKL

Benign

0.035

LIST_S2

Benign

0.67

T;T;T

M_CAP

Benign

0.0076

MetaRNN

Benign

0.044

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

N;N;N

PhyloP100

1.2

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.33

N;N;N

REVEL

Benign

0.051

Sift

Benign

0.13

T;T;T

Sift4G

Benign

0.43

T;T;T

Polyphen

0.0

B;.;.

Vest4

0.11

MutPred

0.24

Gain of phosphorylation at I280 (P = 0.0066);Gain of phosphorylation at I280 (P = 0.0066);Gain of phosphorylation at I280 (P = 0.0066);

MVP

0.34

MPC

0.33

ClinPred

0.017

GERP RS

3.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.023

gMVP

0.095

Mutation Taster

=93/7

polymorphism

(source)

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over