8-133239088-C-G

Variant names:

• chr8-133239088-C-G
• NM_006096.4:c.975G>C
• NDRG1 p.Arg325Arg

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_006096.4(NDRG1):​c.975G>C​(p.Arg325Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. R325R) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NDRG1 NM_006096.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0640
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• Charcot-Marie-Tooth disease type 4D

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Illumina

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.49).
• BP7: Synonymous conserved (PhyloP=-0.064 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006096.4. 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
	NDRG1	NM_006096.4	MANE Select	c.975G>C	p.Arg325Arg	synonymous	Exon 16 of 16	NP_006087.2
	NDRG1	NM_001374844.1		c.1026G>C	p.Arg342Arg	synonymous	Exon 16 of 16	NP_001361773.1
	NDRG1	NM_001135242.2		c.975G>C	p.Arg325Arg	synonymous	Exon 16 of 16	NP_001128714.1	Q92597-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NDRG1	ENST00000323851.13	TSL:1 MANE Select	c.975G>C	p.Arg325Arg	synonymous	Exon 16 of 16	ENSP00000319977.8	Q92597-1
	NDRG1	ENST00000522476.5	TSL:1	c.777G>C	p.Arg259Arg	synonymous	Exon 14 of 14	ENSP00000427894.1	Q92597-2
	NDRG1	ENST00000414097.6	TSL:2	c.975G>C	p.Arg325Arg	synonymous	Exon 16 of 16	ENSP00000404854.2	Q92597-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.49
CADD	Benign	6.8
DANN	Benign	0.82
PhyloP100		-0.064
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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

hg19: chr8-134251331;