chr8-133242079-G-A

Position:

chr8-133242079-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_006096.4(NDRG1):c.892-5C>T variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00247 in 1,614,188 control chromosomes in the GnomAD database, including 75 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.012 ( 40 hom., cov: 33)

Exomes 𝑓: 0.0015 ( 35 hom. )

Consequence

NDRG1
NM_006096.4 splice_region, splice_polypyrimidine_tract, intron

Scores

Splicing: ADA: 0.00001699

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 0.956

Variant links:

Genes affected

NDRG1 (HGNC:7679): (N-myc downstream regulated 1) This gene is a member of the N-myc downregulated gene family which belongs to the alpha/beta hydrolase superfamily. The protein encoded by this gene is a cytoplasmic protein involved in stress responses, hormone responses, cell growth, and differentiation. The encoded protein is necessary for p53-mediated caspase activation and apoptosis. Mutations in this gene are a cause of Charcot-Marie-Tooth disease type 4D, and expression of this gene may be a prognostic indicator for several types of cancer. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, May 2012]

NDRG1 links:

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=-0.72).

BP6

Variant 8-133242079-G-A is Benign according to our data. Variant chr8-133242079-G-A is described in ClinVar as [Benign]. Clinvar id is 362033.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr8-133242079-G-A is described in Lovd as [Benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.012 (1829/152320) while in subpopulation AFR AF= 0.0403 (1673/41562). AF 95% confidence interval is 0.0386. There are 40 homozygotes in gnomad4. There are 855 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 40 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NDRG1	NM_006096.4 linkuse as main transcript	c.892-5C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000323851.13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NDRG1	ENST00000323851.13 linkuse as main transcript	c.892-5C>T		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		1	NM_006096.4	P1	Q92597-1

Frequencies

GnomAD3 genomes

AF:

0.0120

AC:

1821

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0402

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00451

Gnomad ASJ

AF:

0.0124

Gnomad EAS

AF:

0.000577

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000250

Gnomad OTH

AF:

0.0105

GnomAD3 exomes

AF:

0.00338

AC:

851

AN:

251458

Hom.:

AF XY:

0.00253

AC XY:

344

AN XY:

135908

show subpopulations

Gnomad AFR exome

AF:

0.0403

Gnomad AMR exome

AF:

0.00191

Gnomad ASJ exome

AF:

0.00804

Gnomad EAS exome

AF:

0.000272

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000264

Gnomad OTH exome

AF:

0.00130

GnomAD4 exome

AF:

0.00148

AC:

2166

AN:

1461868

Hom.:

Cov.:

AF XY:

0.00131

AC XY:

950

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.0419

Gnomad4 AMR exome

AF:

0.00201

Gnomad4 ASJ exome

AF:

0.00941

Gnomad4 EAS exome

AF:

0.000151

Gnomad4 SAS exome

AF:

0.000139

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000171

Gnomad4 OTH exome

AF:

0.00339

GnomAD4 genome

AF:

0.0120

AC:

1829

AN:

152320

Hom.:

Cov.:

AF XY:

0.0115

AC XY:

855

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.0403

Gnomad4 AMR

AF:

0.00451

Gnomad4 ASJ

AF:

0.0124

Gnomad4 EAS

AF:

0.000578

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000250

Gnomad4 OTH

AF:

0.0104

Alfa

AF:

0.00752

Hom.:

Bravo

AF:

0.0136

Asia WGS

AF:

0.00346

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.000356

ClinVar

Significance: Benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Dec 12, 2017	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Charcot-Marie-Tooth disease type 4D

Benign:2

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Nov 23, 2019	- -

Charcot-Marie-Tooth disease

Benign:1

Benign, criteria provided, single submitter

clinical testing

Molecular Genetics Laboratory, London Health Sciences Centre

- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Oct 27, 2015

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Charcot-Marie-Tooth disease type 4

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 30, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.72

CADD

Benign

1.1

DANN

Benign

0.61

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000017

dbscSNV1_RF

Benign

0.0

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

Publications

LitVar

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

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over