16-28486464-C-T

Variant names:

• chr16-28486464-C-T
• rs386833730
• NM_001042432.2:c.560G>A
• CLN3 p.Gly187Glu

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1 PM2 PM5 PP3_Strong

The NM_001042432.2(CLN3):​c.560G>A​(p.Gly187Glu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 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. G187A) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CLN3 NM_001042432.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: 6.52
• Publications: 0 publications found

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: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Myriad Women's Health, G2P, Orphanet

ENSG00000261832 (HGNC:):

ACMG classification

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

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 9 uncertain in NM_001042432.2
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr16-28486464-C-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 56281.Status of the report is no_assertion_criteria_provided, 0 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.991

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001042432.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLN3	NM_001042432.2	MANE Select	c.560G>A	p.Gly187Glu	missense	Exon 9 of 16	NP_001035897.1	Q13286-1
	CLN3	NM_000086.2		c.560G>A	p.Gly187Glu	missense	Exon 8 of 15	NP_000077.1	Q13286-1
	CLN3	NM_001286104.2		c.488G>A	p.Gly163Glu	missense	Exon 8 of 15	NP_001273033.1	Q13286-7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CLN3	ENST00000636147.2	TSL:1 MANE Select	c.560G>A	p.Gly187Glu	missense	Exon 9 of 16	ENSP00000490105.1	Q13286-1
	CLN3	ENST00000359984.12	TSL:1	c.560G>A	p.Gly187Glu	missense	Exon 8 of 15	ENSP00000353073.9	Q13286-1
	CLN3	ENST00000565316.6	TSL:1	c.560G>A	p.Gly187Glu	missense	Exon 8 of 14	ENSP00000456117.1	Q13286-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Juvenile neuronal ceroid lipofuscinosis (1)
-	1	-	Neuronal ceroid lipofuscinosis (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.56	D
BayesDel_noAF	Pathogenic	0.57
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.98	D
Eigen	Pathogenic	0.92
Eigen_PC	Pathogenic	0.84
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.69	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	4.0	H
PhyloP100		6.5
PrimateAI	Pathogenic	0.83	D
PROVEAN	Pathogenic	-7.0	D
REVEL	Pathogenic	0.92
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0020	D
RBP_binding_hub_radar		0.92
RBP_regulation_power_radar		2.6
Varity_R		0.94
gMVP		0.95

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs386833730;

hg19: chr16-28497785;