Genetic Variant NM_004795.4:c.52_57dupTCGCTG (chr13-33016484-C-CGTCGCT) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PM4

The NM_004795.4(KL):c.52_57dupTCGCTG(p.Ser18_Leu19dup) variant causes a conservative inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000126 in 1,162,530 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 30)

Exomes 𝑓: 0.00012 ( 1 hom. )

Consequence

KL
NM_004795.4 conservative_inframe_insertion

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.358

Publications

0 publications found

Variant links:

Genes affected

KL (HGNC:6344): (klotho) This gene encodes a type-I membrane protein that is related to beta-glucosidases. Reduced production of this protein has been observed in patients with chronic renal failure (CRF), and this may be one of the factors underlying the degenerative processes (e.g., arteriosclerosis, osteoporosis, and skin atrophy) seen in CRF. Also, mutations within this protein have been associated with ageing and bone loss. [provided by RefSeq, Jul 2008]

KL Gene-Disease associations (from GenCC):

tumoral calcinosis, hyperphosphatemic, familial, 1
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
tumoral calcinosis, hyperphosphatemic, familial, 3
Inheritance: Unknown, AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp

KL links:

LOC124903151 (HGNC:):

LOC124903151 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM4

Nonframeshift variant in NON repetitive region in NM_004795.4.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004795.4. 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
	KL	NM_004795.4	MANE Select	c.52_57dupTCGCTG	p.Ser18_Leu19dup	conservative_inframe_insertion	Exon 1 of 5	NP_004786.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
KL	ENST00000380099.4	TSL:1 MANE Select	c.52_57dupTCGCTG	p.Ser18_Leu19dup	conservative_inframe_insertion	Exon 1 of 5	ENSP00000369442.3	Q9UEF7-1
KL	ENST00000487852.1	TSL:5	n.60_65dupTCGCTG		non_coding_transcript_exon	Exon 1 of 5
ENSG00000308044	ENST00000830674.1		n.-246_-241dupAGCGAC		upstream_gene	N/A

Frequencies

GnomAD3 genomes

AF:

0.000163

AC:

AN:

147332

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00614

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000452

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00

AC:

AN:

314

AF XY:

0.00

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000120

AC:

122

AN:

1015198

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

478594

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

20650

American (AMR)

AF:

0.00

AC:

AN:

6270

Ashkenazi Jewish (ASJ)

AF:

0.00554

AC:

AN:

11542

East Asian (EAS)

AF:

0.00

AC:

AN:

20818

South Asian (SAS)

AF:

0.00

AC:

AN:

18950

European-Finnish (FIN)

AF:

0.00

AC:

AN:

17318

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2548

European-Non Finnish (NFE)

AF:

0.0000444

AC:

AN:

878228

Other (OTH)

AF:

0.000489

AC:

AN:

38874

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.514

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:

0.000163

AC:

AN:

147332

Hom.:

Cov.:

AF XY:

0.000153

AC XY:

AN XY:

71684

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

40872

American (AMR)

AF:

0.00

AC:

AN:

14866

Ashkenazi Jewish (ASJ)

AF:

0.00614

AC:

AN:

3418

East Asian (EAS)

AF:

0.00

AC:

AN:

5030

South Asian (SAS)

AF:

0.00

AC:

AN:

4810

European-Finnish (FIN)

AF:

0.00

AC:

AN:

8764

Middle Eastern (MID)

AF:

0.00

AC:

AN:

310

European-Non Finnish (NFE)

AF:

0.0000452

AC:

AN:

66314

Other (OTH)

AF:

0.00

AC:

AN:

2038

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.527

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:

0.00

Hom.:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.36

Mutation Taster

=78/22

polymorphism

(source)

Splicing

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over