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rs121917863

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PVS1_StrongPM2PP5

The NM_007035.4(KERA):c.937C>T(p.Arg313Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000124 in 1,610,592 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 Pathogenic (no stars).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

KERA
NM_007035.4 stop_gained

Scores

2
1
4

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 2.40
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

PVS1
Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.115 CDS is truncated, and there are 3 pathogenic variants in the truncated region.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 12-91051468-G-A is Pathogenic according to our data. Variant chr12-91051468-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 6522.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr12-91051468-G-A is described in Lovd as [Pathogenic]. Variant chr12-91051468-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
KERANM_007035.4 linkuse as main transcriptc.937C>T p.Arg313Ter stop_gained 3/3 ENST00000266719.4

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
KERAENST00000266719.4 linkuse as main transcriptc.937C>T p.Arg313Ter stop_gained 3/31 NM_007035.4 P1

Frequencies

GnomAD3 genomes
AF:
0.0000132
AC:
2
AN:
151608
Hom.:
0
Cov.:
32
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:
0.0000943
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000148
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000200
AC:
5
AN:
250408
Hom.:
0
AF XY:
0.0000369
AC XY:
5
AN XY:
135336
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.0000464
Gnomad NFE exome
AF:
0.0000353
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000123
AC:
18
AN:
1458984
Hom.:
0
Cov.:
30
AF XY:
0.0000152
AC XY:
11
AN XY:
725878
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.0000375
Gnomad4 NFE exome
AF:
0.0000135
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000132
AC:
2
AN:
151608
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74016
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:
0.0000943
Gnomad4 NFE
AF:
0.0000148
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.00000756
ExAC
AF:
0.0000165
AC:
2
EpiCase
AF:
0.0000546
EpiControl
AF:
0.0000593

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Cornea plana 2 Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMJun 01, 2004- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.55
D
BayesDel_noAF
Pathogenic
0.29
Cadd
Pathogenic
37
Dann
Uncertain
0.99
Eigen
Benign
0.11
Eigen_PC
Benign
-0.18
FATHMM_MKL
Benign
0.15
N
MutationTaster
Benign
1.0
A
Vest4
0.47
GERP RS
4.6

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.030
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.

Other links and lift over

dbSNP: rs121917863; hg19: chr12-91445245; COSMIC: COSV57131118; API