rs267607166

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_005148.4(UNC119):​c.169A>T​(p.Lys57*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000225 in 1,551,476 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 31)
Exomes 𝑓: 0.00023 ( 1 hom. )

Consequence

UNC119
NM_005148.4 stop_gained

Scores

2
4
1

Clinical Significance

Uncertain significance criteria provided, single submitter P:1U:1

Conservation

PhyloP100: 2.60

Publications

3 publications found
Variant links:
Genes affected
UNC119 (HGNC:12565): (unc-119 lipid binding chaperone) This gene is specifically expressed in the photoreceptors in the retina. The encoded product shares strong homology with the C. elegans unc119 protein and it can functionally complement the C. elegans unc119 mutation. It has been localized to the photoreceptor synapses in the outer plexiform layer of the retina, and suggested to play a role in the mechanism of photoreceptor neurotransmitter release through the synaptic vesicle cycle. Two transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Jul 2008]
RSKR (HGNC:26314): (ribosomal protein S6 kinase related) Predicted to enable protein kinase activity. Predicted to be involved in protein phosphorylation. [provided by Alliance of Genome Resources, Apr 2022]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BS2
High AC in GnomAd4 at 23 AD,Unknown gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
UNC119NM_005148.4 linkc.169A>T p.Lys57* stop_gained Exon 1 of 5 ENST00000335765.9 NP_005139.1 Q13432-1
UNC119NM_054035.2 linkc.169A>T p.Lys57* stop_gained Exon 1 of 4 NP_473376.1 Q13432-2
UNC119XM_011525459.3 linkc.169A>T p.Lys57* stop_gained Exon 1 of 3 XP_011523761.1
UNC119NM_001330166.2 linkc.-145A>T 5_prime_UTR_variant Exon 1 of 6 NP_001317095.1 Q13432K7EN86

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
UNC119ENST00000335765.9 linkc.169A>T p.Lys57* stop_gained Exon 1 of 5 1 NM_005148.4 ENSP00000337040.3 Q13432-1

Frequencies

GnomAD3 genomes
AF:
0.000151
AC:
23
AN:
152022
Hom.:
0
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.0000241
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:
0.000377
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000265
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000855
AC:
13
AN:
152098
AF XY:
0.0000709
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 FIN exome
AF:
0.000415
Gnomad NFE exome
AF:
0.000161
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000233
AC:
326
AN:
1399454
Hom.:
1
Cov.:
31
AF XY:
0.000228
AC XY:
158
AN XY:
692786
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
31992
American (AMR)
AF:
0.00
AC:
0
AN:
37680
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25238
East Asian (EAS)
AF:
0.00
AC:
0
AN:
36930
South Asian (SAS)
AF:
0.0000124
AC:
1
AN:
80830
European-Finnish (FIN)
AF:
0.000705
AC:
25
AN:
35452
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4708
European-Non Finnish (NFE)
AF:
0.000266
AC:
290
AN:
1088276
Other (OTH)
AF:
0.000171
AC:
10
AN:
58348
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.483
Heterozygous variant carriers
0
19
38
58
77
96
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.000151
AC:
23
AN:
152022
Hom.:
0
Cov.:
31
AF XY:
0.000135
AC XY:
10
AN XY:
74252
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41408
American (AMR)
AF:
0.00
AC:
0
AN:
15284
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5162
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4834
European-Finnish (FIN)
AF:
0.000377
AC:
4
AN:
10614
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.000265
AC:
18
AN:
67932
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.490
Heterozygous variant carriers
0
1
3
4
6
7
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000137
Hom.:
0
Bravo
AF:
0.000140
ExAC
AF:
0.0000272
AC:
3

ClinVar

Significance: Uncertain significance
Submissions summary: Pathogenic:1Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Cone-rod dystrophy 24 Pathogenic:1
Oct 01, 2000
OMIM
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:literature only

- -

not provided Uncertain:1
Jan 23, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change creates a premature translational stop signal (p.Lys57*) in the UNC119 gene. It is expected to result in an absent or disrupted protein product. However, the current clinical and genetic evidence is not sufficient to establish whether loss-of-function variants in UNC119 cause disease. This variant is present in population databases (rs267607166, gnomAD 0.04%). This premature translational stop signal has been observed in individual(s) with cone-rod dystrophy (PMID: 11006213). ClinVar contains an entry for this variant (Variation ID: 5882). Algorithms developed to predict the effect of variants on gene product structure and function are not available or were not evaluated for this variant. Experimental studies have shown that this premature translational stop signal affects UNC119 function (PMID: 11006213). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.42
D
BayesDel_noAF
Pathogenic
0.48
CADD
Pathogenic
37
DANN
Uncertain
0.99
Eigen
Uncertain
0.57
Eigen_PC
Uncertain
0.41
FATHMM_MKL
Uncertain
0.87
D
PhyloP100
2.6
Vest4
0.61
GERP RS
3.5
PromoterAI
-0.31
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Mutation Taster
=7/193
disease causing (ClinVar)

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.070
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs267607166; hg19: chr17-26879407; API