NM_006493.4:c.173+18C>G

Variant names:

• chr13-76992289-C-G
• rs112141862
• NM_006493.4:c.173+18C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_006493.4(CLN5):​c.173+18C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000719 in 1,389,990 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: 7.2e-7 (0 hom.)
• Consequence: CLN5 NM_006493.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.523
• Publications: 0 publications found

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

ENSG00000283208 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLN5	NM_006493.4	c.173+18C>G		intron_variant	Intron 1 of 3	ENST00000377453.9	NP_006484.2
CLN5	NM_001366624.2	c.173+18C>G		intron_variant	Intron 1 of 4		NP_001353553.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLN5	ENST00000377453.9	c.173+18C>G		intron_variant	Intron 1 of 3	1	NM_006493.4	ENSP00000366673.5
ENSG00000283208	ENST00000638147.2	c.173+18C>G		intron_variant	Intron 1 of 4	5		ENSP00000490953.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.19e-7 AC: 1 AN: 1389990 Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0 AN XY: 687444

African (AFR) AF: 0.00 AC: 0 AN: 31414

American (AMR) AF: 0.00 AC: 0 AN: 35480

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24588

East Asian (EAS) AF: 0.0000272 AC: 1 AN: 36810

South Asian (SAS) AF: 0.00 AC: 0 AN: 79992

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 35928

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4042

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1083792

Other (OTH) AF: 0.00 AC: 0 AN: 57944

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	6.1
DANN	Benign	0.49
PhyloP100		-0.52
PromoterAI		0.13	Neutral

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

Other links and lift over

dbSNP: rs112141862; hg19: chr13-77566424;