NM_175737.4:c.420C>G

Variant names:

• chr4-39407369-C-G
• rs56130063
• NM_175737.4:c.420C>G

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_175737.4(KLB):​c.420C>G​(p.Ala140Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00087 in 1,613,962 control chromosomes in the GnomAD database, including 21 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0012 (4 hom., cov: 32)
  • Exomes 𝑓: 0.00084 (17 hom.)
• Consequence: KLB NM_175737.4 synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.131
• Publications: 2 publications found

Genes affected

KLB (HGNC:15527): (klotho beta) Enables fibroblast growth factor binding activity and fibroblast growth factor receptor binding activity. Predicted to be involved in fibroblast growth factor receptor signaling pathway. Predicted to act upstream of or within positive regulation of MAPKKK cascade by fibroblast growth factor receptor signaling pathway and positive regulation of cell population proliferation. Predicted to be located in plasma membrane. Predicted to be active in endoplasmic reticulum. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Benign. The variant received -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.67).
• BP6: Variant 4-39407369-C-G is Benign according to our data. Variant chr4-39407369-C-G is described in ClinVar as Benign. ClinVar VariationId is 1663556.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.131 with no splicing effect.
• BS1: Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.00116 (176/152206) while in subpopulation EAS AF = 0.0291 (151/5182). AF 95% confidence interval is 0.0254. There are 4 homozygotes in GnomAd4. There are 86 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 4 AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_175737.4. 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
	KLB	NM_175737.4	MANE Select	c.420C>G	p.Ala140Ala	synonymous	Exon 1 of 5	NP_783864.1	Q86Z14

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KLB	ENST00000257408.5	TSL:1 MANE Select	c.420C>G	p.Ala140Ala	synonymous	Exon 1 of 5	ENSP00000257408.4	Q86Z14
	KLB	ENST00000859482.1		c.420C>G	p.Ala140Ala	synonymous	Exon 1 of 5	ENSP00000529541.1

Frequencies

GnomAD3 genomes AF: 0.00115 AC: 175 AN: 152088 Hom.: 4 Cov.: 32

Gnomad AFR AF: 0.000338

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000524

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0291

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.000957

GnomAD2 exomes AF: 0.00237 AC: 595 AN: 250988 AF XY: 0.00211

Gnomad AFR exome AF: 0.000372

Gnomad AMR exome AF: 0.000116

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0310

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000264

Gnomad OTH exome AF: 0.00164

GnomAD4 exome AF: 0.000840 AC: 1228 AN: 1461756 Hom.: 17 Cov.: 32 AF XY: 0.000792 AC XY: 576 AN XY: 727200

African (AFR) AF: 0.0000598 AC: 2 AN: 33458

American (AMR) AF: 0.000201 AC: 9 AN: 44690

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.0275 AC: 1090 AN: 39698

South Asian (SAS) AF: 0.0000348 AC: 3 AN: 86246

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000108 AC: 12 AN: 1111958

Other (OTH) AF: 0.00185 AC: 112 AN: 60386

GnomAD4 genome AF: 0.00116 AC: 176 AN: 152206 Hom.: 4 Cov.: 32 AF XY: 0.00116 AC XY: 86 AN XY: 74402

African (AFR) AF: 0.000337 AC: 14 AN: 41528

American (AMR) AF: 0.000523 AC: 8 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.0291 AC: 151 AN: 5182

South Asian (SAS) AF: 0.00 AC: 0 AN: 4814

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10590

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68022

Other (OTH) AF: 0.00142 AC: 3 AN: 2112

Alfa AF: 0.000357 Hom.: 1

Bravo AF: 0.00141

Asia WGS AF: 0.0120 AC: 41 AN: 3478

ClinVar

ClinVar submissions as Germline

Significance: Benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	2	not provided (2)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.67
CADD	Benign	7.2
DANN	Benign	0.73
PhyloP100		-0.13
PromoterAI		0.00020	Neutral
Mutation Taster		=100/0	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

dbSNP: rs56130063; hg19: chr4-39408989; COSMIC: COSV57305000; COSMIC: COSV57305000;