13-76992003-C-A

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The ENST00000636183.2(CLN5):c.-96C>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000011 in 1,450,204 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.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

CLN5
ENST00000636183.2 5_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:4

Conservation

PhyloP100: -1.14

Publications

1 publications found

Variant links:

Genes affected

CLN5 (HGNC:2076): (CLN5 intracellular trafficking protein) This gene is one of eight which have been associated with neuronal ceroid lipofuscinoses (NCL). Also referred to as Batten disease, NCL comprises a class of autosomal recessive, neurodegenerative disorders affecting children. The genes responsible likely encode proteins involved in the degradation of post-translationally modified proteins in lysosomes. The primary defect in NCL disorders is thought to be associated with lysosomal storage function.[provided by RefSeq, Oct 2008]

CLN5 Gene-Disease associations (from GenCC):

neuronal ceroid lipofuscinosis
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
neuronal ceroid lipofuscinosis 5
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Orphanet, Myriad Women’s Health

CLN5 links:

ENSG00000283208 (HGNC:):

ENSG00000283208 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.07624096).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLN5	NM_006493.4 link	c.-96C>A		upstream_gene_variant		ENST00000377453.9	NP_006484.2	O75503A0A024R644
CLN5	NM_001366624.2 link	c.-96C>A		upstream_gene_variant			NP_001353553.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLN5	ENST00000377453.9 link	c.-96C>A		upstream_gene_variant		1	NM_006493.4	ENSP00000366673.5		O75503
ENSG00000283208	ENST00000638147.2 link	c.-96C>A		upstream_gene_variant		5		ENSP00000490953.2		A0A1B0GWJ7

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00

AC:

AN:

214828

AF XY:

0.00

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000110

AC:

AN:

1450204

Hom.:

Cov.:

AF XY:

0.00000971

AC XY:

AN XY:

721034

show subpopulations

African (AFR)

AF:

0.0000300

AC:

AN:

33292

American (AMR)

AF:

0.00

AC:

AN:

43888

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25866

East Asian (EAS)

AF:

0.00

AC:

AN:

39370

South Asian (SAS)

AF:

0.0000117

AC:

AN:

85116

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48402

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5476

European-Non Finnish (NFE)

AF:

0.0000117

AC:

AN:

1108878

Other (OTH)

AF:

0.0000167

AC:

AN:

59916

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000855

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Jun 03, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.52C>A (p.Q18K) alteration is located in exon 1 (coding exon 1) of the CLN5 gene. This alteration results from a C to A substitution at nucleotide position 52, causing the glutamine (Q) at amino acid position 18 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Neuronal ceroid lipofuscinosis 5

Uncertain:1

Sep 05, 2021

Genome-Nilou Lab

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:1

Jan 10, 2014

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Gln18Lys (CAA>AAA): c.52 C>A in exon 1 of the CLN5 gene (NM_006493.2) The Gln18Lys missense change in the CLN5 gene has not been published as a mutation, nor has it been reported as a benign polymorphism to our knowledge. This variant is a non-conservative amino acid substitution of an uncharged Glutamine residue with a positively charged Lysine residue. However, the variant alters a position that is not conserved across species, and in silico analysis predicts this variant likely has a benign effect on the protein structure/function. Therefore, based on the currently available information, it is unclear whether Gln18Lys is a disease-causing mutation or a rare benign variant. The variant is found in INFANT-EPI panel(s). -

Neuronal ceroid lipofuscinosis

Uncertain:1

Mar 09, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces glutamine, which is neutral and polar, with lysine, which is basic and polar, at codon 18 of the CLN5 protein (p.Gln18Lys). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with CLN5-related conditions. ClinVar contains an entry for this variant (Variation ID: 205136). 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: "Benign"; 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

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.59

CADD

Benign

0.55

(source)

DANN

Benign

0.57

DEOGEN2

Benign

0.062

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.10

LIST_S2

Benign

0.28

M_CAP

Benign

0.00085

MetaRNN

Benign

0.076

MetaSVM

Benign

-0.99

PhyloP100

-1.1

PrimateAI

Uncertain

0.58

MutPred

0.29

Gain of ubiquitination at Q18 (P = 0.0031);

ClinPred

0.056

GERP RS

0.68

PromoterAI

-0.036

Neutral

(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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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