Variant 6-42173677-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PP3_ModerateBS2

The NM_001384910.1(GUCA1A):c.64T>C(p.Tyr22His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000041 in 1,461,634 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

GUCA1A
NM_001384910.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.02

Variant links:

Genes affected

GUCA1A (HGNC:4678): (guanylate cyclase activator 1A) This gene encodes an enzyme that plays a role in the recovery of retinal photoreceptors from photobleaching. This enzyme promotes the activity of retinal guanylyl cyclase-1 (GC1) at low calcium concentrations and inhibits GC1 at high calcium concentrations. Mutations in this gene can cause cone dystrophy 3 and code-rod dystrophy 14. provided by RefSeq, Jul 2020]

GUCA1A links:

GUCA1ANB-GUCA1A (HGNC:):

GUCA1ANB-GUCA1A links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.87

BS2

High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
GUCA1A	NM_001384910.1 linkuse as main transcript	c.64T>C	p.Tyr22His	missense_variant	1/4	ENST00000372958.2	NP_001371839.1
GUCA1ANB-GUCA1A	NM_001319061.2 linkuse as main transcript	c.64T>C	p.Tyr22His	missense_variant	3/6		NP_001305990.1
GUCA1ANB-GUCA1A	NM_000409.5 linkuse as main transcript	c.64T>C	p.Tyr22His	missense_variant	3/6		NP_000400.2
GUCA1ANB-GUCA1A	NM_001319062.2 linkuse as main transcript	c.64T>C	p.Tyr22His	missense_variant	2/5		NP_001305991.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GUCA1A	ENST00000372958.2 linkuse as main transcript	c.64T>C	p.Tyr22His	missense_variant	1/4	1	NM_001384910.1	ENSP00000362049	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251474

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135910

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461634

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727138

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

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

Sep 27, 2023

This sequence change replaces tyrosine, which is neutral and polar, with histidine, which is basic and polar, at codon 22 of the GUCA1A protein (p.Tyr22His). This variant is present in population databases (no rsID available, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with GUCA1A-related conditions. 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

0.96

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.22

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.60

.;.;D;D;D

Eigen

Pathogenic

0.77

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.90

.;D;.;.;D

M_CAP

Benign

0.041

MetaRNN

Pathogenic

0.87

D;D;D;D;D

MetaSVM

Benign

-0.33

MutationAssessor

Uncertain

2.1

.;.;M;M;M

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Pathogenic

0.89

PROVEAN

Pathogenic

-4.9

D;.;D;D;D

REVEL

Pathogenic

0.68

Sift

Pathogenic

0.0

D;.;D;D;D

Sift4G

Benign

0.091

T;D;D;D;D

Polyphen

1.0

.;.;D;D;D

Vest4

0.83, 0.88, 0.91, 0.90

MutPred

0.72

Gain of disorder (P = 0.0129);.;Gain of disorder (P = 0.0129);Gain of disorder (P = 0.0129);Gain of disorder (P = 0.0129);

MVP

0.80

MPC

1.0

ClinPred

0.99

GERP RS

5.8

Varity_R

0.85

gMVP

0.79

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