Genetic Variant NM_001042432.2:c.1309C>G (chr16-28477524-G-C) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_001042432.2(CLN3):c.1309C>G(p.Leu437Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,094 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. L437F) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

CLN3
NM_001042432.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.38

Publications

0 publications found

Variant links:

Genes affected

CLN3 (HGNC:2074): (CLN3 lysosomal/endosomal transmembrane protein, battenin) This gene encodes a protein that is involved in lysosomal function. Mutations in this, as well as other neuronal ceroid-lipofuscinosis (CLN) genes, cause neurodegenerative diseases commonly known as Batten disease or collectively known as neuronal ceroid lipofuscinoses (NCLs). Many alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jul 2008]

CLN3 Gene-Disease associations (from GenCC):

inherited retinal dystrophy
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
neuronal ceroid lipofuscinosis
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
neuronal ceroid lipofuscinosis 3
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae), Myriad Women’s Health

CLN3 links:

ENSG00000261832 (HGNC:):

ENSG00000261832 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.784

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLN3	NM_001042432.2 link	c.1309C>G	p.Leu437Val	missense_variant	Exon 16 of 16	ENST00000636147.2	NP_001035897.1	Q13286-1A0A024QZB8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLN3	ENST00000636147.2 link	c.1309C>G	p.Leu437Val	missense_variant	Exon 16 of 16	1	NM_001042432.2	ENSP00000490105.1		Q13286-1
ENSG00000261832	ENST00000637378.1 link	c.228+4581C>G		intron_variant	Intron 4 of 9	5		ENSP00000490831.1		A0A1B0GW90

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461094

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726820

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33466

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86222

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53240

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5274

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111998

Other (OTH)

AF:

0.00

AC:

AN:

60334

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.087

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.040

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.75

D;D;.;.;D;.;.;D;D;D;.;D;.;.

Eigen

Uncertain

0.43

Eigen_PC

Uncertain

0.32

FATHMM_MKL

Uncertain

0.85

LIST_S2

Benign

0.85

.;.;D;.;.;D;D;D;.;D;D;D;.;D

M_CAP

Uncertain

0.27

MetaRNN

Pathogenic

0.78

D;D;D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Uncertain

0.55

MutationAssessor

Pathogenic

2.9

M;M;.;.;.;.;.;.;M;.;.;.;.;.

PhyloP100

4.4

PrimateAI

Benign

0.39

PROVEAN

Benign

-1.8

.;N;.;.;N;N;N;D;N;.;N;.;.;N

REVEL

Pathogenic

0.69

Sift

Uncertain

0.0040

.;D;.;.;D;D;D;D;D;.;D;.;.;D

Sift4G

Uncertain

0.029

.;.;D;.;D;D;D;.;D;.;D;.;.;.

Polyphen

1.0

D;D;.;.;D;.;.;.;D;D;D;D;.;D

Vest4

0.42, 0.27, 0.28, 0.31, 0.28, 0.38

MutPred

0.58

Gain of catalytic residue at L437 (P = 0.0394);Gain of catalytic residue at L437 (P = 0.0394);.;.;.;.;.;.;Gain of catalytic residue at L437 (P = 0.0394);.;.;.;.;.;

MVP

0.90

MPC

0.57

ClinPred

0.98

GERP RS

3.0

Varity_R

0.14

gMVP

0.23

Mutation Taster

=89/11

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.19

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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NM_001042432.2:c.1309C>G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over