2-58159637-C-G

Variant names:

• chr2-58159637-C-G
• rs781556579
• NM_006296.7:c.1471C>G

Variant summary

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

The NM_006296.7(VRK2):​c.1471C>G​(p.Arg491Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,540 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign 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. R491S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: VRK2 NM_006296.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0590
• Publications: 2 publications found

Genes affected

VRK2 (HGNC:12719): (VRK serine/threonine kinase 2) This gene encodes a member of the vaccinia-related kinase (VRK) family of serine/threonine protein kinases. The encoded protein acts as an effector of signaling pathways that regulate apoptosis and tumor cell growth. Variants in this gene have been associated with schizophrenia. Alternative splicing results in multiple transcript variants that differ in their subcellular localization and biological activity. [provided by RefSeq, Jan 2014]

FANCL (HGNC:20748): (FA complementation group L) This gene encodes a ubiquitin ligase that is a member of the Fanconi anemia complementation group (FANC). Members of this group are related by their assembly into a common nuclear protein complex rather than by sequence similarity. This gene encodes the protein for complementation group L that mediates monoubiquitination of FANCD2 as well as FANCI. Fanconi anemia is a genetically heterogeneous recessive disorder characterized by cytogenetic instability, hypersensitivity to DNA crosslinking agents, increased chromosomal breakage, and defective DNA repair. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2018]

FANCL Gene-Disease associations (from GenCC):

• Fanconi anemia complementation group L

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Laboratory for Molecular Medicine, G2P
• Fanconi anemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

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 (MetaRNN=0.028648019).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006296.7. 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
	VRK2	NM_006296.7	MANE Select	c.1471C>G	p.Arg491Gly	missense	Exon 13 of 13	NP_006287.2	Q86Y07-1
	FANCL	NM_018062.4	MANE Select	c.*128G>C		3_prime_UTR	Exon 14 of 14	NP_060532.2
	VRK2	NM_001130480.2		c.1471C>G	p.Arg491Gly	missense	Exon 13 of 13	NP_001123952.1	Q86Y07-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	VRK2	ENST00000340157.9	TSL:1 MANE Select	c.1471C>G	p.Arg491Gly	missense	Exon 13 of 13	ENSP00000342381.4	Q86Y07-1
	VRK2	ENST00000435505.6	TSL:1	c.1471C>G	p.Arg491Gly	missense	Exon 16 of 16	ENSP00000408002.2	Q86Y07-1
	VRK2	ENST00000440705.6	TSL:1	c.1402C>G	p.Arg468Gly	missense	Exon 13 of 13	ENSP00000398323.2	Q86Y07-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00 AC: 0 AN: 249302 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461540 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727070

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26116

East Asian (EAS) AF: 0.00 AC: 0 AN: 39672

South Asian (SAS) AF: 0.00 AC: 0 AN: 86238

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53386

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111800

Other (OTH) AF: 0.00 AC: 0 AN: 60372

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.051
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.69
CADD	Benign	0.25
DANN	Benign	0.54
DEOGEN2	Benign	0.060	T
Eigen	Benign	-1.6
Eigen_PC	Benign	-1.5
FATHMM_MKL	Benign	0.0026	N
LIST_S2	Benign	0.52	T
M_CAP	Benign	0.0033	T
MetaRNN	Benign	0.029	T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	-2.2	N
PhyloP100		-0.059
PrimateAI	Benign	0.21	T
PROVEAN	Benign	0.89	N
REVEL	Benign	0.029
Sift	Benign	1.0	T
Sift4G	Benign	1.0	T
Polyphen		0.0	B
Vest4		0.080
MutPred		0.49		Loss of helix (P = 0.0626)
MVP		0.061
MPC		0.015
ClinPred		0.024	T
GERP RS		-0.86
Varity_R		0.027
gMVP		0.51
Mutation Taster		=97/3	polymorphism

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: rs781556579; hg19: chr2-58386772;