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GeneBe

7-128772654-T-C

Variant summary

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

The NM_001385125.1(OPN1SW):c.924A>G(p.Gln308=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Consequence

OPN1SW
NM_001385125.1 synonymous

Scores

2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.117
Variant links:
Genes affected
OPN1SW (HGNC:1012): (opsin 1, short wave sensitive) This gene belongs to the G-protein coupled receptor 1 family, opsin subfamily. It encodes the blue cone pigment gene which is one of three types of cone photoreceptors responsible for normal color vision. Defects in this gene are the cause of tritan color blindness (tritanopia). Affected individuals lack blue and yellow sensory mechanisms while retaining those for red and green. Defective blue vision is characteristic. [provided by RefSeq, Jul 2008]
CALU (HGNC:1458): (calumenin) The product of this gene is a calcium-binding protein localized in the endoplasmic reticulum (ER) and it is involved in such ER functions as protein folding and sorting. This protein belongs to a family of multiple EF-hand proteins (CERC) that include reticulocalbin, ERC-55, and Cab45 and the product of this gene. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Oct 2008]

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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
OPN1SWNM_001385125.1 linkuse as main transcriptc.924A>G p.Gln308= synonymous_variant 5/5 ENST00000249389.3
CALUNM_001219.5 linkuse as main transcriptc.*3487T>C 3_prime_UTR_variant 7/7 ENST00000249364.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
OPN1SWENST00000249389.3 linkuse as main transcriptc.924A>G p.Gln308= synonymous_variant 5/51 NM_001385125.1 P1
CALUENST00000249364.9 linkuse as main transcriptc.*3487T>C 3_prime_UTR_variant 7/71 NM_001219.5 O43852-1
CALUENST00000449187.7 linkuse as main transcriptc.*3487T>C 3_prime_UTR_variant 7/71 P1O43852-2
CALUENST00000542996.7 linkuse as main transcriptc.*3487T>C 3_prime_UTR_variant 8/81 O43852-4

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
Cov.:
31
GnomAD4 genome
Cov.:
32

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 submitterclinical testingInvitaeOct 07, 2021In 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. This variant has not been reported in the literature in individuals affected with OPN1SW-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change affects codon 311 of the OPN1SW mRNA. It is a 'silent' change, meaning that it does not change the encoded amino acid sequence of the OPN1SW protein. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.65
CADD
Benign
16
DANN
Benign
0.78

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.42
Details are displayed if max score is > 0.2
DS_AG_spliceai
0.42
Position offset: -1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr7-128412708; API