chr2-218960266-G-T

Variant names:

• chr2-218960266-G-T
• rs1273740033
• NM_003936.5:c.446G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_003936.5(CDK5R2):​c.446G>T​(p.Gly149Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000274 in 1,276,954 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G149S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000027 (0 hom.)
• Consequence: CDK5R2 NM_003936.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.720
• Publications: 0 publications found

Genes affected

CDK5R2 (HGNC:1776): (cyclin dependent kinase 5 regulatory subunit 2) The protein encoded by this gene is a neuron-specific activator of CDK5 kinase. It associates with CDK5 to form an active kinase. This protein and neuron-specific CDK5 activator CDK5R1/p39NCK5A both share limited similarity to cyclins, and thus may define a distinct family of cyclin-dependent kinase activating proteins. [provided by RefSeq, Jul 2008]

CDK5R2-AS1 (HGNC:55677): (CDK5R2 antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.26109654).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003936.5. 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
	CDK5R2	NM_003936.5	MANE Select	c.446G>T	p.Gly149Val	missense	Exon 1 of 1	NP_003927.1	Q13319

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CDK5R2	ENST00000302625.6	TSL:6 MANE Select	c.446G>T	p.Gly149Val	missense	Exon 1 of 1	ENSP00000304250.4	Q13319
	CDK5R2-AS1	ENST00000429343.1	TSL:4	n.45+1593C>A		intron	N/A
	CDK5R2-AS1	ENST00000798770.1		n.277+1593C>A		intron	N/A

Frequencies

GnomAD3 genomes AF: 0.0000331 AC: 5 AN: 151102 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000738

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000266 AC: 30 AN: 1125852 Hom.: 0 Cov.: 31 AF XY: 0.0000277 AC XY: 15 AN XY: 540582

African (AFR) AF: 0.00 AC: 0 AN: 22668

American (AMR) AF: 0.00 AC: 0 AN: 8334

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 14416

East Asian (EAS) AF: 0.00 AC: 0 AN: 25890

South Asian (SAS) AF: 0.00 AC: 0 AN: 29180

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 24944

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3110

European-Non Finnish (NFE) AF: 0.0000315 AC: 30 AN: 952022

Other (OTH) AF: 0.00 AC: 0 AN: 45288

GnomAD4 genome AF: 0.0000331 AC: 5 AN: 151102 Hom.: 0 Cov.: 32 AF XY: 0.0000407 AC XY: 3 AN XY: 73778

African (AFR) AF: 0.00 AC: 0 AN: 41296

American (AMR) AF: 0.00 AC: 0 AN: 15180

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3458

East Asian (EAS) AF: 0.00 AC: 0 AN: 5116

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10200

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.0000738 AC: 5 AN: 67720

Other (OTH) AF: 0.00 AC: 0 AN: 2074

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000264

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.031	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.074	T
Eigen	Benign	-0.29
Eigen_PC	Benign	-0.32
FATHMM_MKL	Benign	0.40	N
LIST_S2	Benign	0.47	T
M_CAP	Pathogenic	0.69	D
MetaRNN	Benign	0.26	T
MetaSVM	Benign	-0.80	T
MutationAssessor	Benign	1.0	L
PhyloP100		0.72
PrimateAI	Pathogenic	0.91	D
PROVEAN	Benign	-0.13	N
REVEL	Benign	0.21
Sift	Benign	0.071	T
Sift4G	Benign	0.22	T
Polyphen		0.92	P
Vest4		0.063
MutPred		0.47		Loss of relative solvent accessibility (P = 0.008)
MVP		0.72
ClinPred		0.36	T
GERP RS		2.8
Varity_R		0.15
gMVP		0.26
Mutation Taster		=99/1	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: rs1273740033; hg19: chr2-219824988;