NM_004795.4:c.20C>T

Variant names:

• chr13-33016460-C-T
• NM_004795.4:c.20C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_004795.4(KL):​c.20C>T​(p.Pro7Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. P7S) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 30)
• Consequence: KL NM_004795.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.542
• Publications: 0 publications found

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

LOC124903151 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.11812231).

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.20C>T	p.Pro7Leu	missense	Exon 1 of 5	NP_004786.2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KL	ENST00000380099.4	TSL:1 MANE Select	c.20C>T	p.Pro7Leu	missense	Exon 1 of 5	ENSP00000369442.3	Q9UEF7-1
	KL	ENST00000487852.1	TSL:5	n.28C>T		non_coding_transcript_exon	Exon 1 of 5
	ENSG00000308044	ENST00000830674.1		n.-216G>A		upstream_gene	N/A

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 30

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	-0.29	T
BayesDel_noAF	Benign	-0.65
CADD	Benign	14
DANN	Uncertain	0.99
DEOGEN2	Benign	0.12	T
Eigen	Benign	-0.71
Eigen_PC	Benign	-0.65
FATHMM_MKL	Benign	0.13	N
LIST_S2	Benign	0.36	T
M_CAP	Uncertain	0.28	D
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N
PhyloP100		0.54
PrimateAI	Pathogenic	0.86	D
PROVEAN	Benign	0.36	N
REVEL	Benign	0.050
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.015	D
Polyphen		0.0010	B
Vest4		0.14
MutPred		0.20		Gain of catalytic residue at P2 (P = 0)
MVP		0.40
MPC		0.96
ClinPred		0.21	T
GERP RS		1.9
PromoterAI		0.028	Neutral
Varity_R		0.095
gMVP		0.42
Mutation Taster		=90/10	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

hg19: chr13-33590598;