Genetic Variant GUCA2A:p.Ala16Thr (chr1-42164667-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_033553.3(GUCA2A):c.46G>A(p.Ala16Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000232 in 1,550,806 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000022 ( 0 hom. )

Consequence

GUCA2A
NM_033553.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.341

Variant links:

Genes affected

GUCA2A (HGNC:4682): (guanylate cyclase activator 2A) Predicted to enable guanylate cyclase activator activity. Predicted to be involved in positive regulation of guanylate cyclase activity and signal transduction. Predicted to be located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

GUCA2A links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.30039304).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GUCA2A	NM_033553.3 link	c.46G>A	p.Ala16Thr	missense_variant	Exon 1 of 3	ENST00000357001.3	NP_291031.2	Q02747

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GUCA2A	ENST00000357001.3 link	c.46G>A	p.Ala16Thr	missense_variant	Exon 1 of 3	1	NM_033553.3	ENSP00000349493.2		Q02747

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152236

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.000159

AC:

AN:

156902

Hom.:

AF XY:

0.0000968

AC XY:

AN XY:

82628

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00101

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:

0.0000222

AC:

AN:

1398570

Hom.:

Cov.:

AF XY:

0.0000130

AC XY:

AN XY:

689980

show subpopulations

Gnomad4 AFR exome

AF:

0.0000632

Gnomad4 AMR exome

AF:

0.000755

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:

9.27e-7

Gnomad4 OTH exome

AF:

0.0000173

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152236

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74374

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.000196

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:

0.0000529

ExAC

AF:

0.0000414

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 23, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.46G>A (p.A16T) alteration is located in exon 1 (coding exon 1) of the GUCA2A gene. This alteration results from a G to A substitution at nucleotide position 46, causing the alanine (A) at amino acid position 16 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

0.11

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.45

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

Eigen

Benign

0.016

Eigen_PC

Benign

-0.041

FATHMM_MKL

Benign

0.30

LIST_S2

Benign

0.69

M_CAP

Benign

0.015

MetaRNN

Benign

0.30

MetaSVM

Benign

-0.91

MutationAssessor

Uncertain

2.2

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.6

REVEL

Benign

0.17

Sift

Uncertain

0.015

Sift4G

Benign

0.26

Polyphen

0.96

Vest4

0.17

MutPred

0.72

Loss of catalytic residue at A16 (P = 0.1488);

MVP

0.29

MPC

0.0020

ClinPred

0.096

GERP RS

4.6

Varity_R

0.11

gMVP

0.41

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