chr16-28482105-C-G

Position:

• chr16-28482105-C-G

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_001042432.2(CLN3):​c.1056G>C​(p.Gln352His) variant causes a missense, splice region change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (no stars).

• Frequency: Genomes: not found (cov: 31)
• Consequence: CLN3 NM_001042432.2 missense, splice_region
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 4.66

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]

ENSG00000261832 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.988
• PP5: Variant 16-28482105-C-G is Pathogenic according to our data. Variant chr16-28482105-C-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 56248.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr16-28482105-C-G is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CLN3	NM_001042432.2	c.1056G>C	p.Gln352His	missense_variant, splice_region_variant	14/16	ENST00000636147.2	NP_001035897.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CLN3	ENST00000636147.2	c.1056G>C	p.Gln352His	missense_variant, splice_region_variant	14/16	1	NM_001042432.2	ENSP00000490105.1
ENSG00000261832	ENST00000637378.1	c.228G>C	p.Gln76His	missense_variant, splice_region_variant	4/10	5		ENSP00000490831.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Neuronal ceroid lipofuscinosis 3 Pathogenic:1

Likely pathogenic, no assertion criteria provided

literature only

Juha Muilu Group; Institute for Molecular Medicine Finland (FIMM)

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.55	D
BayesDel_noAF	Pathogenic	0.56
CADD	Pathogenic	33
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.99	.;.;D;D;.;D;.;.;D;D;D;.;D;.;.;.
Eigen	Uncertain	0.67
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.83	T;T;.;.;.;.;D;D;D;.;D;D;D;.;D;D
M_CAP	Pathogenic	0.83	D
MetaRNN	Pathogenic	0.99	D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	4.0	.;.;H;H;.;.;.;.;.;H;.;.;.;.;.;.
PrimateAI	Uncertain	0.50	T
PROVEAN	Pathogenic	-4.4	.;.;.;D;.;D;D;D;.;D;.;D;.;.;D;.
REVEL	Pathogenic	0.96
Sift	Uncertain	0.0010	.;.;.;D;.;D;D;D;.;D;.;D;.;.;D;.
Sift4G	Pathogenic	0.0	.;.;.;.;.;D;D;D;.;D;.;D;.;.;.;.
Polyphen		1.0, 1.0	.;.;D;D;.;D;.;.;.;D;D;D;D;.;D;.
Vest4		0.90, 0.88, 0.83, 0.91
MutPred		0.92		.;.;Loss of MoRF binding (P = 0.1253);Loss of MoRF binding (P = 0.1253);.;.;.;.;.;Loss of MoRF binding (P = 0.1253);.;.;.;.;.;.;
MVP		0.96
MPC		0.62
ClinPred		1.0	D
GERP RS		4.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.94
gMVP		0.92

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	1.0
SpliceAI score (max)		0.97		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.97		Position offset: 0

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

Publications

LitVar

Other links and lift over

dbSNP: rs386833699; hg19: chr16-28493426;