rs1555634713

Variant names:

• chr17-8004027-CCAGCTTCG-C
• rs1555634713
• NM_000180.4:c.901_908delCTTCGCAG

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_000180.4(GUCY2D):​c.901_908delCTTCGCAG​(p.Leu301GlyfsTer15) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: GUCY2D NM_000180.4 frameshift
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 5.80
• Publications: 1 publications found

Genes affected

GUCY2D (HGNC:4689): (guanylate cyclase 2D, retinal) This gene encodes a retina-specific guanylate cyclase, which is a member of the membrane guanylyl cyclase family. Like other membrane guanylyl cyclases, this enzyme has a hydrophobic amino-terminal signal sequence followed by a large extracellular domain, a single membrane spanning domain, a kinase homology domain, and a guanylyl cyclase catalytic domain. In contrast to other membrane guanylyl cyclases, this enzyme is not activated by natriuretic peptides. Mutations in this gene result in Leber congenital amaurosis and cone-rod dystrophy-6 diseases. [provided by RefSeq, Dec 2008]

GUCY2D Gene-Disease associations (from GenCC):

• cone-rod dystrophy

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, G2P
• GUCY2D-related dominant retinopathy

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• GUCY2D-related recessive retinopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Leber congenital amaurosis 1

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• cone-rod dystrophy 6

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• night blindness, congenital stationary, type1i

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• Leber congenital amaurosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• central areolar choroidal dystrophy

  Inheritance: AR, AD Classification: SUPPORTIVE, LIMITED Submitted by: G2P, Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GUCY2D	NM_000180.4	c.901_908delCTTCGCAG	p.Leu301GlyfsTer15	frameshift_variant	Exon 3 of 20	ENST00000254854.5	NP_000171.1
GUCY2D	XM_011523816.2	c.901_908delCTTCGCAG	p.Leu301GlyfsTer15	frameshift_variant	Exon 2 of 19		XP_011522118.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GUCY2D	ENST00000254854.5	c.901_908delCTTCGCAG	p.Leu301GlyfsTer15	frameshift_variant	Exon 3 of 20	1	NM_000180.4	ENSP00000254854.4

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

Submissions by phenotype

Retinal dystrophy Uncertain:1

Jan 01, 2015

NIHR Bioresource Rare Diseases, University of Cambridge

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: research

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		5.8
Mutation Taster		=4/196	disease causing (fs/PTC)

Splicing

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

Other links and lift over

dbSNP: rs1555634713; hg19: chr17-7907345;