11-119339434-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1PM2PP2

The NM_001278431.2(C1QTNF5):c.629G>A(p.Gly210Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,674 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G210R) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

C1QTNF5
NM_001278431.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.10

Publications

0 publications found

Variant links:

Genes affected

C1QTNF5 (HGNC:14344): (C1q and TNF related 5) This gene encodes a member of a family of proteins that function as components of basement membranes and may play a role in cell adhesion. Mutations in this gene have been associated with late-onset retinal degeneration. The protein may be encoded by either a bicistronic transcript including sequence from the upstream membrane frizzled-related protein gene (MFRP), or by a monocistronic transcript expressed from an internal promoter. [provided by RefSeq, Jun 2013]

C1QTNF5 links:

MFRP (HGNC:18121): (membrane frizzled-related protein) This gene encodes a member of the frizzled-related protein family. The encoded protein plays an important role in eye development and mutations in this gene have been associated with nanophthalmos, posterior microphthalmia, retinitis pigmentosa, foveoschisis, and optic disc drusen. The protein is encoded by a bicistronic transcript which also encodes C1q and tumor necrosis factor related protein 5 (C1QTNF5). [provided by RefSeq, Jun 2013]

MFRP Gene-Disease associations (from GenCC):

isolated microphthalmia 5
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia, G2P, Orphanet
nanophthalmos 2
Inheritance: AR Classification: DEFINITIVE, MODERATE Submitted by: Ambry Genetics, G2P
nanophthalmia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

MFRP links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM1

In a domain C1q (size 139) in uniprot entity C1QT5_HUMAN there are 7 pathogenic changes around while only 2 benign (78%) in NM_001278431.2

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 6 curated pathogenic missense variants (we use a threshold of 10). The gene has 1 curated benign missense variants. Trascript score misZ: 0.7257 (below the threshold of 3.09). GenCC associations: The gene is linked to late-onset retinal degeneration.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
C1QTNF5	NM_001278431.2 link	c.629G>A	p.Gly210Asp	missense_variant	Exon 3 of 3	ENST00000528368.3	NP_001265360.1	Q9BXJ0A0A024R3F8
MFRP	NM_031433.4 link	c.*1525G>A		3_prime_UTR_variant	Exon 15 of 15	ENST00000619721.6	NP_113621.1	Q9BY79-1
C1QTNF5	NM_015645.5 link	c.629G>A	p.Gly210Asp	missense_variant	Exon 15 of 15		NP_056460.1	Q9BXJ0A0A024R3F8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
C1QTNF5	ENST00000528368.3 link	c.629G>A	p.Gly210Asp	missense_variant	Exon 3 of 3	1	NM_001278431.2	ENSP00000431140.1	Q9BXJ0
C1QTNF5	ENST00000530681.2 link	c.629G>A	p.Gly210Asp	missense_variant	Exon 2 of 2	1		ENSP00000456533.2	Q9BXJ0
MFRP	ENST00000619721.6 link	c.*1525G>A		3_prime_UTR_variant	Exon 15 of 15	1	NM_031433.4	ENSP00000481824.1	Q9BY79-1
C1QTNF5	ENST00000525657.2 link	n.519G>A		non_coding_transcript_exon_variant	Exon 2 of 2	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461674

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727126

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53358

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111884

Other (OTH)

AF:

0.00

AC:

AN:

60386

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

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

Sep 20, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 210 of the C1QTNF5 protein (p.Gly210Asp). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with C1QTNF5-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). 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

0.75

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

-0.070

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.32

T;T

Eigen

Benign

0.18

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Uncertain

0.79

LIST_S2

Benign

0.85

.;T

M_CAP

Uncertain

0.15

MetaRNN

Uncertain

0.67

D;D

MetaSVM

Uncertain

-0.021

MutationAssessor

Benign

0.97

L;L

PhyloP100

2.1

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-2.0

N;N

REVEL

Uncertain

0.50

Sift

Uncertain

0.0050

D;T

Sift4G

Uncertain

0.020

D;D

Vest4

0.58

MutPred

0.51

Gain of catalytic residue at G210 (P = 0.0957);Gain of catalytic residue at G210 (P = 0.0957);

MVP

0.57

ClinPred

0.91

GERP RS

4.4

Varity_R

0.54

gMVP

0.64

Mutation Taster

=80/20

polymorphism

(source)

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

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11-119339434-C-T

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over