7-80488539-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001102386.3(GNAT3):c.299G>T(p.Ser100Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000275 in 1,600,524 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00019 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

GNAT3
NM_001102386.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.79

Variant links:

Genes affected

GNAT3 (HGNC:22800): (G protein subunit alpha transducin 3) Sweet, bitter, and umami tastes are transmitted from taste receptors by a specific guanine nucleotide binding protein. The protein encoded by this gene is the alpha subunit of this heterotrimeric G protein, which is found not only in the oral epithelium but also in gut tissues. Variations in this gene have been linked to metabolic syndrome. [provided by RefSeq, Dec 2015]

GNAT3 links:

LOC107986812 (HGNC:):

LOC107986812 links:

CD36 (HGNC:1663): (CD36 molecule (CD36 blood group)) The protein encoded by this gene is the fourth major glycoprotein of the platelet surface and serves as a receptor for thrombospondin in platelets and various cell lines. Since thrombospondins are widely distributed proteins involved in a variety of adhesive processes, this protein may have important functions as a cell adhesion molecule. It binds to collagen, thrombospondin, anionic phospholipids and oxidized LDL. It directly mediates cytoadherence of Plasmodium falciparum parasitized erythrocytes and it binds long chain fatty acids and may function in the transport and/or as a regulator of fatty acid transport. Mutations in this gene cause platelet glycoprotein deficiency. Multiple alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Feb 2014]

CD36 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.19762653).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GNAT3	NM_001102386.3 linkuse as main transcript	c.299G>T	p.Ser100Ile	missense_variant	3/8	ENST00000398291.4
LOC107986812	XR_001745252.2 linkuse as main transcript	n.217+758C>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GNAT3	ENST00000398291.4 linkuse as main transcript	c.299G>T	p.Ser100Ile	missense_variant	3/8	1	NM_001102386.3	P1
CD36	ENST00000435819.5 linkuse as main transcript	c.-261+758C>A		intron_variant		2		P1	P16671-1

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152084

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000700

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000172

AC:

AN:

232234

Hom.:

AF XY:

0.0000160

AC XY:

AN XY:

125286

show subpopulations

Gnomad AFR exome

AF:

0.000283

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:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000104

AC:

AN:

1448322

Hom.:

Cov.:

AF XY:

0.00000834

AC XY:

AN XY:

719162

show subpopulations

Gnomad4 AFR exome

AF:

0.000421

Gnomad4 AMR exome

AF:

0.00

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:

9.06e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000191

AC:

AN:

152202

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74404

show subpopulations

Gnomad4 AFR

AF:

0.000698

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:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000990

Hom.:

Bravo

AF:

0.000132

ExAC

AF:

0.00000829

AC:

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

Feb 10, 2023

The c.299G>T (p.S100I) alteration is located in exon 3 (coding exon 3) of the GNAT3 gene. This alteration results from a G to T substitution at nucleotide position 299, causing the serine (S) at amino acid position 100 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

Benign

0.18

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.16

Cadd

Uncertain

Dann

Uncertain

0.99

DEOGEN2

Uncertain

0.61

Eigen

Benign

0.12

Eigen_PC

Uncertain

0.33

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.61

M_CAP

Benign

0.061

MetaRNN

Benign

0.20

MetaSVM

Uncertain

-0.22

MutationAssessor

Benign

0.34

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.38

PROVEAN

Benign

-1.5

REVEL

Uncertain

0.34

Sift

Uncertain

0.0030

Sift4G

Benign

0.16

Polyphen

0.027

Vest4

0.20

MVP

0.83

MPC

0.037

ClinPred

0.22

GERP RS

5.8

Varity_R

0.32

gMVP

0.52

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