Variant chr17-75239516-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_138619.4(GGA3):c.1639G>A(p.Ala547Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000704 in 1,419,680 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

GGA3
NM_138619.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.48

Variant links:

Genes affected

GGA3 (HGNC:17079): (golgi associated, gamma adaptin ear containing, ARF binding protein 3) This gene encodes a member of the Golgi-localized, gamma adaptin ear-containing, ARF-binding (GGA) family. This family includes ubiquitous coat proteins that regulate the trafficking of proteins between the trans-Golgi network and the lysosome. These proteins share an amino-terminal VHS domain which mediates sorting of the mannose 6-phosphate receptors at the trans-Golgi network. They also contain a carboxy-terminal region with homology to the ear domain of gamma-adaptins. Multiple alternatively spliced transcript variants have been identified in this gene. [provided by RefSeq, Feb 2010]

GGA3 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GGA3	NM_138619.4 linkuse as main transcript	c.1639G>A	p.Ala547Thr	missense_variant	14/17	ENST00000537686.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GGA3	ENST00000537686.6 linkuse as main transcript	c.1639G>A	p.Ala547Thr	missense_variant	14/17	1	NM_138619.4	P1	Q9NZ52-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.04e-7

AC:

AN:

1419680

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

704494

show subpopulations

Gnomad4 AFR exome

AF:

0.0000316

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000378

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

Mar 06, 2023

The c.1639G>A (p.A547T) alteration is located in exon 14 (coding exon 14) of the GGA3 gene. This alteration results from a G to A substitution at nucleotide position 1639, causing the alanine (A) at amino acid position 547 to be replaced by a threonine (T). 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

0.065

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.48

CADD

Benign

DANN

Benign

0.86

DEOGEN2

Benign

0.026

.;T;.;.;.

Eigen

Benign

-0.42

Eigen_PC

Benign

-0.45

FATHMM_MKL

Benign

0.63

LIST_S2

Benign

0.81

T;.;T;T;T

M_CAP

Benign

0.0094

MetaRNN

Benign

0.098

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.7

.;L;.;.;.

MutationTaster

Benign

1.0

N;N;N;N;N;N

PrimateAI

Benign

0.33

REVEL

Benign

0.041

Sift4G

Benign

0.26

T;T;T;T;T

Polyphen

0.76

P;P;.;.;.

Vest4

0.10

MutPred

0.19

.;Gain of glycosylation at A547 (P = 0.0011);.;.;.;

MVP

0.43

ClinPred

0.15

GERP RS

3.0

Varity_R

0.080

gMVP

0.34

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.33

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.33

Position offset: -5

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