Menu
GeneBe

rs386833985

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2PP3_StrongPP5

The NM_007035.4(KERA):c.391A>G(p.Asn131Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,611,138 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 Likely pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N131S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

KERA
NM_007035.4 missense

Scores

11
6
2

Clinical Significance

Likely pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 7.67
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.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.967
PP5
Variant 12-91055891-T-C is Pathogenic according to our data. Variant chr12-91055891-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 56549.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr12-91055891-T-C is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
KERANM_007035.4 linkuse as main transcriptc.391A>G p.Asn131Asp missense_variant 2/3 ENST00000266719.4

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
KERAENST00000266719.4 linkuse as main transcriptc.391A>G p.Asn131Asp missense_variant 2/31 NM_007035.4 P1

Frequencies

GnomAD3 genomes
AF:
0.00000661
AC:
1
AN:
151182
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000662
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:
0.00
GnomAD3 exomes
AF:
0.0000160
AC:
4
AN:
250176
Hom.:
0
AF XY:
0.0000148
AC XY:
2
AN XY:
135256
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000116
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000274
AC:
4
AN:
1459956
Hom.:
0
Cov.:
33
AF XY:
0.00000275
AC XY:
2
AN XY:
726300
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000897
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:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000661
AC:
1
AN:
151182
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
73806
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.0000662
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:
0.00
Bravo
AF:
0.00000378
ExAC
AF:
0.00000824
AC:
1

ClinVar

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

Submissions by phenotype

Cornea plana 2 Pathogenic:1
Likely pathogenic, no assertion criteria providedliterature onlyJuha Muilu Group; Institute for Molecular Medicine Finland (FIMM)-- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.99
BayesDel_addAF
Benign
-0.047
T
BayesDel_noAF
Uncertain
-0.080
Cadd
Pathogenic
27
Dann
Uncertain
1.0
DEOGEN2
Uncertain
0.68
D
Eigen
Pathogenic
1.0
Eigen_PC
Pathogenic
0.95
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.92
D
M_CAP
Pathogenic
0.38
D
MetaRNN
Pathogenic
0.97
D
MetaSVM
Uncertain
0.64
D
MutationAssessor
Pathogenic
4.9
H
MutationTaster
Benign
1.0
D
PrimateAI
Uncertain
0.64
T
PROVEAN
Pathogenic
-5.0
D
REVEL
Pathogenic
0.81
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.96
MutPred
0.78
Gain of relative solvent accessibility (P = 0.0479);
MVP
0.97
MPC
0.12
ClinPred
1.0
D
GERP RS
6.1
Varity_R
0.96
gMVP
0.90

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.

Other links and lift over

dbSNP: rs386833985; hg19: chr12-91449668; API