12-52834104-C-T

Variant names:

• chr12-52834104-C-T
• rs201617351
• NM_175834.3:c.157G>A

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_175834.3(KRT79):​c.157G>A​(p.Gly53Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000112 in 1,613,256 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000010 (0 hom.)
• Consequence: KRT79 NM_175834.3 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.562

Genes affected

KRT79 (HGNC:28930): (keratin 79) Keratins are intermediate filament proteins responsible for the structural integrity of epithelial cells and are subdivided into epithelial keratins and hair keratins. This gene encodes an epithelial keratin that is expressed in skeletal muscle, skin and scalp. The type II keratins are clustered in a region of chromosome 12q13.[provided by RefSeq, Jun 2009]

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.031499088).
• BP6: Variant 12-52834104-C-T is Benign according to our data. Variant chr12-52834104-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 2329190.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KRT79	NM_175834.3	c.157G>A	p.Gly53Ser	missense_variant	Exon 1 of 9	ENST00000330553.6	NP_787028.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KRT79	ENST00000330553.6	c.157G>A	p.Gly53Ser	missense_variant	Exon 1 of 9	1	NM_175834.3	ENSP00000328358.5

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152108 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000194

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000404 AC: 10 AN: 247450 AF XY: 0.0000668

Gnomad AFR exome AF: 0.0000667

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000546

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000628

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000103 AC: 15 AN: 1461030 Hom.: 0 Cov.: 35 AF XY: 0.00000963 AC XY: 7 AN XY: 726810

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52740

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.0000117 AC: 13 AN: 1111864

Other (OTH) AF: 0.00 AC: 0 AN: 60368

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152226 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74420

African (AFR) AF: 0.0000241 AC: 1 AN: 41560

American (AMR) AF: 0.00 AC: 0 AN: 15298

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

East Asian (EAS) AF: 0.000195 AC: 1 AN: 5136

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10606

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

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68010

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.0000868 Hom.: 0

Bravo AF: 0.0000113

ExAC AF: 0.0000412 AC: 5

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Nov 21, 2022

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.065
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.45
CADD	Benign	2.4
DANN	Benign	0.92
DEOGEN2	Benign	0.0070	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.015	N
LIST_S2	Benign	0.20	T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.031	T
MetaSVM	Benign	-0.85	T
MutationAssessor	Benign	0.72	N
PhyloP100		-0.56
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-0.76	N
REVEL	Benign	0.11
Sift	Benign	0.59	T
Sift4G	Benign	0.15	T
Polyphen		0.0	B
Vest4		0.13
MutPred		0.42		Gain of catalytic residue at T54 (P = 2e-04);
MVP		0.30
MPC		0.10
ClinPred		0.014	T
GERP RS		0.20
PromoterAI		0.0020	Neutral
Varity_R		0.036
gMVP		0.15
Mutation Taster		=99/1	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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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Other links and lift over

dbSNP: rs201617351; hg19: chr12-53227888; COSMIC: COSV57939696; COSMIC: COSV57939696;