Variant 12-91055661-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_007035.4(KERA):c.621G>A(p.Met207Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000869 in 1,611,156 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

KERA
NM_007035.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.57

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 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KERA	NM_007035.4 linkuse as main transcript	c.621G>A	p.Met207Ile	missense_variant	2/3	ENST00000266719.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KERA	ENST00000266719.4 linkuse as main transcript	c.621G>A	p.Met207Ile	missense_variant	2/3	1	NM_007035.4	P1

Frequencies

GnomAD3 genomes

AF:

0.00000662

AC:

AN:

151130

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000148

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

250076

Hom.:

AF XY:

0.00000740

AC XY:

AN XY:

135150

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.0000996

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000887

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000890

AC:

AN:

1460026

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

726328

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000673

Gnomad4 ASJ exome

AF:

0.0000384

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000630

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000662

AC:

AN:

151130

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73762

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000148

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000488

Hom.:

Bravo

AF:

0.00000756

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

Jun 03, 2022

The c.621G>A (p.M207I) alteration is located in exon 2 (coding exon 1) of the KERA gene. This alteration results from a G to A substitution at nucleotide position 621, causing the methionine (M) at amino acid position 207 to be replaced by an isoleucine (I). 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

0.81

BayesDel_addAF

Benign

-0.0038

BayesDel_noAF

Benign

-0.24

Cadd

Uncertain

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.49

Eigen

Uncertain

0.30

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.94

M_CAP

Benign

0.042

MetaRNN

Uncertain

0.61

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.77

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.64

PROVEAN

Benign

-2.2

REVEL

Uncertain

0.30

Sift

Uncertain

0.0070

Sift4G

Benign

0.17

Polyphen

0.85

Vest4

0.70

MutPred

0.47

Gain of catalytic residue at P208 (P = 4e-04);

MVP

0.58

MPC

0.019

ClinPred

0.50

GERP RS

6.1

Varity_R

0.74

gMVP

0.50

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