NM_170678.3:c.-215+56T>G

Variant names:

• chr19-3933234-T-G
• rs2304191
• NM_170678.3:c.-215+56T>G

Variant summary

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

The NM_170678.3(NMRK2):​c.-215+56T>G variant causes a intron 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.

• Frequency: Genomes: not found (cov: 29)
• Consequence: NMRK2 NM_170678.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0660
• Publications: 11 publications found

Genes affected

NMRK2 (HGNC:17871): (nicotinamide riboside kinase 2) Enables ribosylnicotinamide kinase activity and ribosylnicotinate kinase activity. Predicted to be involved in NAD metabolic process. Predicted to act upstream of or within negative regulation of myoblast differentiation. Located in nucleoplasm and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000289254 (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=-0.78).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_170678.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NMRK2	NM_170678.3	MANE Select	c.-215+56T>G		intron	N/A	NP_733778.1
	NMRK2	NM_001289117.2		c.-215+56T>G		intron	N/A	NP_001276046.1
	NMRK2	NR_110316.2		n.110+56T>G		intron	N/A

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NMRK2	ENST00000168977.7	TSL:2 MANE Select	c.-215+56T>G		intron	N/A	ENSP00000168977.1
	ENSG00000289254	ENST00000723109.1		n.56A>C		non_coding_transcript_exon	Exon 1 of 2
	ENSG00000289254	ENST00000723110.1		n.8A>C		non_coding_transcript_exon	Exon 1 of 2

Frequencies

GnomAD3 genomes Cov.: 29

GnomAD4 exome Cov.: 0

GnomAD4 genome Cov.: 29

Alfa AF: 0.00 Hom.: 2525

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
CADD	Benign	9.1
DANN	Benign	0.60
PhyloP100		-0.066
PromoterAI		0.053	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: rs2304191; hg19: chr19-3933232;