Genetic Variant KLC3:p.Arg208Trp (chr19-45348003-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3

The NM_177417.3(KLC3):c.622C>T(p.Arg208Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000305 in 1,608,860 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. R208Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

KLC3
NM_177417.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.00

Publications

1 publications found

Variant links:

Genes affected

KLC3 (HGNC:20717): (kinesin light chain 3) This gene encodes a member of the kinesin light chain gene family. Kinesins are molecular motors involved in the transport of cargo along microtubules, and are composed of two kinesin heavy chain (KHC) and two kinesin light chain (KLC) molecules. KLCs are thought to typically be involved in binding cargo and regulating kinesin activity. In the rat, a protein similar to this gene product is expressed in post-meiotic spermatids, where it associates with structural components of sperm tails and mitochondria. [provided by RefSeq, Jul 2008]

KLC3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.777

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KLC3	NM_177417.3 link	c.622C>T	p.Arg208Trp	missense_variant	Exon 5 of 13	ENST00000391946.7	NP_803136.2	Q6P597-1A0A024R0V3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KLC3	ENST00000391946.7 link	c.622C>T	p.Arg208Trp	missense_variant	Exon 5 of 13	1	NM_177417.3	ENSP00000375810.2		Q6P597-1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152174

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000589

AC:

AN:

237674

AF XY:

0.0000542

show subpopulations

Gnomad AFR exome

AF:

0.000278

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000229

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000278

Gnomad OTH exome

AF:

0.000172

GnomAD4 exome

AF:

0.0000288

AC:

AN:

1456686

Hom.:

Cov.:

AF XY:

0.0000304

AC XY:

AN XY:

724180

show subpopulations

African (AFR)

AF:

0.000329

AC:

AN:

33394

American (AMR)

AF:

0.00

AC:

AN:

44034

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25942

East Asian (EAS)

AF:

0.000127

AC:

AN:

39500

South Asian (SAS)

AF:

0.0000588

AC:

AN:

85024

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52906

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.0000162

AC:

AN:

1109962

Other (OTH)

AF:

0.0000332

AC:

AN:

60166

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152174

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74334

show subpopulations

African (AFR)

AF:

0.0000965

AC:

AN:

41444

American (AMR)

AF:

0.00

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000379

Hom.:

Bravo

AF:

0.0000264

ESP6500AA

AF:

0.000231

AC:

ESP6500EA

AF:

0.000117

AC:

ExAC

AF:

0.0000495

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 22, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.622C>T (p.R208W) alteration is located in exon 5 (coding exon 4) of the KLC3 gene. This alteration results from a C to T substitution at nucleotide position 622, causing the arginine (R) at amino acid position 208 to be replaced by a tryptophan (W). 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

0.88

BayesDel_addAF

Benign

-0.088

BayesDel_noAF

Uncertain

-0.060

CADD

Uncertain

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.39

.;T;.;.;.

Eigen

Uncertain

0.22

Eigen_PC

Benign

0.087

FATHMM_MKL

Benign

0.66

LIST_S2

Pathogenic

0.99

D;D;D;D;D

M_CAP

Pathogenic

0.37

MetaRNN

Pathogenic

0.78

D;D;D;D;D

MetaSVM

Benign

-0.73

MutationAssessor

Uncertain

2.6

.;M;.;.;.

PhyloP100

1.0

PrimateAI

Pathogenic

0.88

PROVEAN

Pathogenic

-7.3

.;D;.;.;D

REVEL

Benign

0.26

Sift

Pathogenic

0.0

.;D;.;.;D

Sift4G

Pathogenic

0.0010

D;D;D;D;D

Polyphen

1.0

.;D;D;.;D

Vest4

0.84, 0.85, 0.83

MVP

0.87

MPC

0.092

ClinPred

0.97

GERP RS

2.6

Varity_R

0.72

gMVP

0.85

Mutation Taster

=88/12

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over