chr17-28547308-C-T

Position:

chr17-28547308-C-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_005148.4(UNC119):c.712G>A(p.Gly238Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000967 in 1,613,960 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

UNC119
NM_005148.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.91

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]

UNC119 links:

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]

RSKR links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High AC in GnomAd4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
UNC119	NM_005148.4 link	c.712G>A	p.Gly238Arg	missense_variant	5/5	ENST00000335765.9	NP_005139.1	Q13432-1
UNC119	NM_001330166.2 link	c.427G>A	p.Gly143Arg	missense_variant	6/6		NP_001317095.1	Q13432K7EN86
UNC119	NM_054035.2 link	c.*316G>A		3_prime_UTR_variant	4/4		NP_473376.1	Q13432-2
UNC119	XM_011525459.3 link	c.*495G>A		3_prime_UTR_variant	3/3		XP_011523761.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
UNC119	ENST00000335765.9 link	c.712G>A	p.Gly238Arg	missense_variant	5/5	1	NM_005148.4	ENSP00000337040.3		Q13432-1

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152128

Hom.:

Cov.:

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000118

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000398

AC:

AN:

251280

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135868

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000616

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000101

AC:

147

AN:

1461832

Hom.:

Cov.:

AF XY:

0.0000949

AC XY:

AN XY:

727224

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:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000127

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000592

AC:

AN:

152128

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74300

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.000118

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.0000529

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.000164

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 10, 2023

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 238 of the UNC119 protein (p.Gly238Arg). This variant is present in population databases (rs143353275, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with UNC119-related conditions. ClinVar contains an entry for this variant (Variation ID: 1043784). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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

AlphaMissense

Pathogenic

0.91

BayesDel_addAF

Pathogenic

0.31

BayesDel_noAF

Pathogenic

0.39

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.71

D;T

Eigen

Pathogenic

0.85

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.83

T;T

M_CAP

Uncertain

0.17

MetaRNN

Uncertain

0.54

D;D

MetaSVM

Uncertain

0.58

MutationAssessor

Uncertain

2.8

M;.

PrimateAI

Pathogenic

0.82

PROVEAN

Pathogenic

-7.2

D;.

REVEL

Pathogenic

0.76

Sift

Uncertain

0.0010

D;.

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;.

Vest4

0.47

MutPred

0.39

Loss of glycosylation at T239 (P = 0.0563);.;

MVP

0.94

MPC

1.4

ClinPred

0.85

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.91

gMVP

0.70

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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