8-1770805-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_018941.4(CLN8):​c.-123-127C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.802 in 586,928 control chromosomes in the GnomAD database, including 189,842 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.81 ( 49809 hom., cov: 32)
Exomes 𝑓: 0.80 ( 140033 hom. )

Consequence

CLN8
NM_018941.4 intron

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.0460
Variant links:
Genes affected
CLN8 (HGNC:2079): (CLN8 transmembrane ER and ERGIC protein) This gene encodes a transmembrane protein belonging to a family of proteins containing TLC domains, which are postulated to function in lipid synthesis, transport, or sensing. The protein localizes to the endoplasmic reticulum (ER), and may recycle between the ER and ER-Golgi intermediate compartment. Mutations in this gene are associated with a disorder characterized by progressive epilepsy with cognitive disabilities (EPMR), which is a subtype of neuronal ceroid lipofuscinoses (NCL). Patients with mutations in this gene have altered levels of sphingolipid and phospholipids in the brain. [provided by RefSeq, Jul 2017]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-1.0).
BP6
Variant 8-1770805-C-T is Benign according to our data. Variant chr8-1770805-C-T is described in ClinVar as [Benign]. Clinvar id is 1181243.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.84 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
CLN8NM_018941.4 linkuse as main transcriptc.-123-127C>T intron_variant ENST00000331222.6 NP_061764.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
CLN8ENST00000331222.6 linkuse as main transcriptc.-123-127C>T intron_variant 1 NM_018941.4 ENSP00000328182 P1

Frequencies

GnomAD3 genomes
AF:
0.807
AC:
122690
AN:
152030
Hom.:
49760
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.848
Gnomad AMI
AF:
0.940
Gnomad AMR
AF:
0.664
Gnomad ASJ
AF:
0.766
Gnomad EAS
AF:
0.753
Gnomad SAS
AF:
0.780
Gnomad FIN
AF:
0.824
Gnomad MID
AF:
0.791
Gnomad NFE
AF:
0.818
Gnomad OTH
AF:
0.802
GnomAD4 exome
AF:
0.801
AC:
348112
AN:
434780
Hom.:
140033
AF XY:
0.801
AC XY:
182722
AN XY:
228108
show subpopulations
Gnomad4 AFR exome
AF:
0.848
Gnomad4 AMR exome
AF:
0.599
Gnomad4 ASJ exome
AF:
0.768
Gnomad4 EAS exome
AF:
0.744
Gnomad4 SAS exome
AF:
0.789
Gnomad4 FIN exome
AF:
0.829
Gnomad4 NFE exome
AF:
0.820
Gnomad4 OTH exome
AF:
0.800
GnomAD4 genome
AF:
0.807
AC:
122791
AN:
152148
Hom.:
49809
Cov.:
32
AF XY:
0.803
AC XY:
59737
AN XY:
74382
show subpopulations
Gnomad4 AFR
AF:
0.848
Gnomad4 AMR
AF:
0.663
Gnomad4 ASJ
AF:
0.766
Gnomad4 EAS
AF:
0.754
Gnomad4 SAS
AF:
0.780
Gnomad4 FIN
AF:
0.824
Gnomad4 NFE
AF:
0.818
Gnomad4 OTH
AF:
0.802
Alfa
AF:
0.801
Hom.:
5009
Bravo
AF:
0.793
Asia WGS
AF:
0.781
AC:
2717
AN:
3478

ClinVar

Significance: Benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2
Benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
Benign, criteria provided, single submitterclinical testingGeneDxJun 25, 2018- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-1.0
CADD
Benign
2.6
DANN
Benign
0.30

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs4875957; hg19: chr8-1718971; API