rs121434631

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 7P and 1B. PM1PM2PM5PP2BP4

The NM_001384910.1(GUCA1A):​c.451C>G​(p.Leu151Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,158 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L151F) has been classified as Pathogenic.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Consequence

GUCA1A
NM_001384910.1 missense

Scores

7
12

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.77

Publications

23 publications found
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]
GUCA1ANB-GUCA1A (HGNC:56129): (GUCA1ANB-GUCA1A readthrough) This locus represents naturally occurring readthrough transcription between the neighboring GUCA1ANB (GUCA1A neighbor) and GUCA1A (guanylate cyclase activator 1A) genes on chromosome 6. The readthrough transcript encodes the same protein as GUCA1A. [provided by RefSeq, Jul 2020]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM1
In a hotspot region, there are 10 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 10 uncertain in NM_001384910.1
PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr6-42179248-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 9152.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
PP2
Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 21 curated pathogenic missense variants (we use a threshold of 10). The gene has 3 curated benign missense variants. Trascript score misZ: 0.22619 (below the threshold of 3.09). GenCC associations: The gene is linked to cone dystrophy 3, cone-rod dystrophy 14, hereditary macular dystrophy, cone dystrophy, central areolar choroidal dystrophy, cone-rod dystrophy.
BP4
Computational evidence support a benign effect (MetaRNN=0.28281975).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
GUCA1ANM_001384910.1 linkc.451C>G p.Leu151Val missense_variant Exon 4 of 4 ENST00000372958.2 NP_001371839.1
GUCA1ANB-GUCA1ANM_000409.5 linkc.451C>G p.Leu151Val missense_variant Exon 6 of 6 NP_000400.2 P43080
GUCA1ANB-GUCA1ANM_001319061.2 linkc.451C>G p.Leu151Val missense_variant Exon 6 of 6 NP_001305990.1 P43080
GUCA1ANB-GUCA1ANM_001319062.2 linkc.451C>G p.Leu151Val missense_variant Exon 5 of 5 NP_001305991.1 P43080B2R9P6

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
GUCA1AENST00000372958.2 linkc.451C>G p.Leu151Val missense_variant Exon 4 of 4 1 NM_001384910.1 ENSP00000362049.1 P43080
GUCA1ANB-GUCA1AENST00000654459.1 linkc.451C>G p.Leu151Val missense_variant Exon 5 of 5 ENSP00000499539.1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152158
Hom.:
0
Cov.:
32
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000400
AC:
1
AN:
250276
AF XY:
0.00000739
show subpopulations
Gnomad AFR exome
AF:
0.0000621
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
Cov.:
31
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152158
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74332
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41436
American (AMR)
AF:
0.00
AC:
0
AN:
15282
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5184
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10618
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68024
Other (OTH)
AF:
0.00
AC:
0
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.50
BayesDel_addAF
Benign
-0.13
T
BayesDel_noAF
Benign
-0.24
CADD
Uncertain
24
DANN
Uncertain
1.0
DEOGEN2
Benign
0.38
.;T;T;T
Eigen
Uncertain
0.28
Eigen_PC
Benign
0.18
FATHMM_MKL
Uncertain
0.89
D
LIST_S2
Uncertain
0.90
D;.;.;D
M_CAP
Benign
0.027
D
MetaRNN
Benign
0.28
T;T;T;T
MetaSVM
Benign
-0.67
T
MutationAssessor
Benign
0.97
.;L;L;L
PhyloP100
2.8
PrimateAI
Uncertain
0.53
T
PROVEAN
Benign
-1.8
.;N;N;N
REVEL
Uncertain
0.38
Sift
Benign
0.066
.;T;T;T
Sift4G
Benign
0.078
T;T;T;T
Polyphen
1.0
.;D;D;D
Vest4
0.48
MutPred
0.56
.;Gain of disorder (P = 0.2233);Gain of disorder (P = 0.2233);Gain of disorder (P = 0.2233);
MVP
0.79
MPC
0.88
ClinPred
0.74
D
GERP RS
3.3
Varity_R
0.23
gMVP
0.64
Mutation Taster
=72/28
polymorphism

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

Other links and lift over

dbSNP: rs121434631; hg19: chr6-42146986; API