rs154774637

Variant names:

• chr15-68208364-A-G
• rs154774637
• NM_017882.3:c.712T>C

Your query was ambiguous. Multiple possible variants found:

• chr15-68208364-A-G
• chr15-68208364-A-T

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM1 PM2 PM5 PP3

The NM_017882.3(CLN6):​c.712T>C​(p.Phe238Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,566 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. F238I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CLN6 NM_017882.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.95
• Publications: 1 publications found

Genes affected

CLN6 (HGNC:2077): (CLN6 transmembrane ER 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]

CLN6 Gene-Disease associations (from GenCC):

• ceroid lipofuscinosis, neuronal, 6A

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P, Myriad Women’s Health, Orphanet
• ceroid lipofuscinosis, neuronal, 6B (Kufs type)

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, G2P, Orphanet
• neuronal ceroid lipofuscinosis

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen

ENSG00000260007 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 13 uncertain in NM_017882.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr15-68208363-AA-GT is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 1072428.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.832

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLN6	NM_017882.3	c.712T>C	p.Phe238Leu	missense_variant	Exon 7 of 7	ENST00000249806.11	NP_060352.1
CLN6	NM_001411068.1	c.808T>C	p.Phe270Leu	missense_variant	Exon 7 of 7		NP_001397997.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLN6	ENST00000249806.11	c.712T>C	p.Phe238Leu	missense_variant	Exon 7 of 7	1	NM_017882.3	ENSP00000249806.5
ENSG00000260007	ENST00000562767.2	c.84-10736T>C		intron_variant	Intron 1 of 2	3		ENSP00000456336.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461566 Hom.: 0 Cov.: 38 AF XY: 0.00000138 AC XY: 1 AN XY: 727086

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53112

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112006

Other (OTH) AF: 0.00 AC: 0 AN: 60388

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.70
BayesDel_addAF	Pathogenic	0.33	D
BayesDel_noAF	Pathogenic	0.23
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.94	D;D;D;.;T;T
Eigen	Uncertain	0.23
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.90	D;D;D;D;D;D
M_CAP	Uncertain	0.25	D
MetaRNN	Pathogenic	0.83	D;D;D;D;D;D
MetaSVM	Uncertain	0.50	D
MutationAssessor	Uncertain	2.1	M;.;.;.;.;.
PhyloP100		8.9
PrimateAI	Uncertain	0.67	T
PROVEAN	Uncertain	-4.0	D;D;D;D;.;.
REVEL	Pathogenic	0.75
Sift	Uncertain	0.017	D;D;D;D;.;.
Sift4G	Uncertain	0.021	D;D;D;D;.;.
Polyphen		0.29	B;.;.;.;.;.
Vest4		0.49
MutPred		0.54		.;.;.;Loss of MoRF binding (P = 0.3586);.;.;
MVP		0.95
MPC		0.37
ClinPred		0.99	D
GERP RS		4.2
Varity_R		0.42
gMVP		0.78
Mutation Taster		=35/65	disease causing

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: rs154774637; hg19: chr15-68500702;