Variant 12-91051498-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The ENST00000266719.4(KERA):c.907T>C(p.Cys303Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000106 in 1,609,686 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 (★).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

KERA
ENST00000266719.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.94

Variant links:

Genes affected

KERA (HGNC:6309): (keratocan) The protein encoded by this gene is a keratan sulfate proteoglycan that is involved in corneal transparency. Defects in this gene are a cause of autosomal recessive cornea plana 2 (CNA2).[provided by RefSeq, May 2010]

KERA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.871

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KERA	NM_007035.4 linkuse as main transcript	c.907T>C	p.Cys303Arg	missense_variant	3/3	ENST00000266719.4	NP_008966.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KERA	ENST00000266719.4 linkuse as main transcript	c.907T>C	p.Cys303Arg	missense_variant	3/3	1	NM_007035.4	ENSP00000266719	P1

Frequencies

GnomAD3 genomes

AF:

0.0000527

AC:

AN:

151704

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000132

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:

0.00

Gnomad OTH

AF:

0.000479

GnomAD4 exome

AF:

0.00000617

AC:

AN:

1457982

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

725430

show subpopulations

Gnomad4 AFR exome

AF:

0.0000901

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000541

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000527

AC:

AN:

151704

Hom.:

Cov.:

AF XY:

0.0000540

AC XY:

AN XY:

74088

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.000132

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000479

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000756

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 17, 2021

The c.907T>C (p.C303R) alteration is located in exon 3 (coding exon 2) of the KERA gene. This alteration results from a T to C substitution at nucleotide position 907, causing the cysteine (C) at amino acid position 303 to be replaced by an arginine (R). 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

0.98

BayesDel_addAF

Pathogenic

0.34

BayesDel_noAF

Pathogenic

0.25

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.82

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Benign

0.42

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.87

MetaSVM

Benign

-0.49

MutationAssessor

Pathogenic

3.1

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.75

PROVEAN

Pathogenic

-11

REVEL

Uncertain

0.62

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.0020

Polyphen

1.0

Vest4

0.79

MutPred

0.66

Gain of catalytic residue at P304 (P = 0.0037);

MVP

0.87

MPC

0.062

ClinPred

1.0

GERP RS

5.6

Varity_R

0.97

gMVP

0.83

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over