17-29576080-G-A

Position:

chr17-29576080-G-A

Variant summary

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

The NM_014030.4(GIT1):c.1663C>T(p.Arg555Trp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,613,492 control chromosomes in the GnomAD database, with no homozygous occurrence. 3/3 splice prediction tools predict no significant impact on normal splicing. 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. R555Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

GIT1
NM_014030.4 missense, splice_region

Scores

Splicing: ADA: 0.04459

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.10

Variant links:

Genes affected

GIT1 (HGNC:4272): (GIT ArfGAP 1) Enables gamma-tubulin binding activity. Involved in positive regulation of microtubule nucleation and regulation of cytokinesis. Located in several cellular components, including focal adhesion; microtubule cytoskeleton; and mitochondrion. Implicated in attention deficit hyperactivity disorder. Biomarker of Huntington's disease. [provided by Alliance of Genome Resources, Apr 2022]

GIT1 links:

ABHD15-AS1 (HGNC:49685): (ABHD15 antisense RNA 1)

ABHD15-AS1 links:

TP53I13 (HGNC:25102): (tumor protein p53 inducible protein 13) Involved in several processes, including negative regulation of cell cycle; response to UV; and response to xenobiotic stimulus. Located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

TP53I13 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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
GIT1	NM_014030.4 linkuse as main transcript	c.1663C>T	p.Arg555Trp	missense_variant, splice_region_variant	15/20	ENST00000225394.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GIT1	ENST00000225394.8 linkuse as main transcript	c.1663C>T	p.Arg555Trp	missense_variant, splice_region_variant	15/20	1	NM_014030.4	A1	Q9Y2X7-1
ABHD15-AS1	ENST00000581474.1 linkuse as main transcript	n.153+15381G>A		intron_variant, non_coding_transcript_variant		5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251184

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135794

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

AN:

1461354

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726938

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152138

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000227

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 01, 2022

The c.1690C>T (p.R564W) alteration is located in exon 16 (coding exon 16) of the GIT1 gene. This alteration results from a C to T substitution at nucleotide position 1690, causing the arginine (R) at amino acid position 564 to be replaced by a tryptophan (W). 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

Uncertain

0.37

BayesDel_addAF

Uncertain

0.092

BayesDel_noAF

Uncertain

0.080

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.47

T;.;.;.;T

Eigen

Benign

0.066

Eigen_PC

Benign

0.067

FATHMM_MKL

Uncertain

0.89

LIST_S2

Uncertain

0.88

D;D;T;D;D

M_CAP

Uncertain

0.092

MetaRNN

Uncertain

0.61

D;D;D;D;D

MetaSVM

Benign

-0.54

MutationAssessor

Benign

0.55

N;.;.;.;.

MutationTaster

Benign

0.60

N;N;N;N

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-3.2

D;D;.;.;.

REVEL

Uncertain

0.44

Sift

Uncertain

0.0020

D;D;.;.;.

Sift4G

Uncertain

0.0090

D;D;D;D;D

Polyphen

1.0

D;D;.;.;.

Vest4

0.69

MutPred

0.47

Loss of disorder (P = 0.0371);.;.;Loss of disorder (P = 0.0371);.;

MVP

0.90

MPC

0.42

ClinPred

0.85

GERP RS

0.46

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.099

gMVP

0.42

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.045

dbscSNV1_RF

Benign

0.22

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over