4-851812-T-C

Position:

• chr4-851812-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_005255.4(GAK):​c.3446A>G​(p.Tyr1149Cys) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: GAK NM_005255.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.57

Genes affected

GAK (HGNC:4113): (cyclin G associated kinase) In all eukaryotes, the cell cycle is governed by cyclin-dependent protein kinases (CDKs), whose activities are regulated by cyclins and CDK inhibitors in a diverse array of mechanisms that involve the control of phosphorylation and dephosphorylation of Ser, Thr or Tyr residues. Cyclins are molecules that possess a consensus domain called the 'cyclin box.' In mammalian cells, 9 cyclin species have been identified, and they are referred to as cyclins A through I. Cyclin G is a direct transcriptional target of the p53 tumor suppressor gene product and thus functions downstream of p53. GAK is an association partner of cyclin G and CDK5. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GAK	NM_005255.4	c.3446A>G	p.Tyr1149Cys	missense_variant	25/28	ENST00000314167.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GAK	ENST00000314167.9	c.3446A>G	p.Tyr1149Cys	missense_variant	25/28	1	NM_005255.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 09, 2021

The c.3446A>G (p.Y1149C) alteration is located in exon 25 (coding exon 25) of the GAK gene. This alteration results from a A to G substitution at nucleotide position 3446, causing the tyrosine (Y) at amino acid position 1149 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.020
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.47	T;.;T
Eigen	Uncertain	0.24
Eigen_PC	Benign	0.10
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Pathogenic	0.98	D;D;D
M_CAP	Uncertain	0.16	D
MetaRNN	Uncertain	0.68	D;D;D
MetaSVM	Uncertain	-0.029	T
MutationAssessor	Pathogenic	3.2	M;.;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.62	T
PROVEAN	Pathogenic	-6.0	D;D;.
REVEL	Uncertain	0.47
Sift	Pathogenic	0.0	D;D;.
Sift4G	Uncertain	0.0040	D;D;D
Polyphen		1.0	D;.;.
Vest4		0.74
MutPred		0.35		Gain of glycosylation at Y1149 (P = 0.0038);.;.;
MVP		0.80
MPC		0.64
ClinPred		0.99	D
GERP RS		2.6
Varity_R		0.67
gMVP		0.29

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-845600;