Variant 1-21598016-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_002885.4(RAP1GAP):c.1928C>T(p.Ala643Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000484 in 1,583,170 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00041 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00049 ( 0 hom. )

Consequence

RAP1GAP
NM_002885.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.47

Variant links:

Genes affected

RAP1GAP (HGNC:9858): (RAP1 GTPase activating protein) This gene encodes a type of GTPase-activating-protein (GAP) that down-regulates the activity of the ras-related RAP1 protein. RAP1 acts as a molecular switch by cycling between an inactive GDP-bound form and an active GTP-bound form. The product of this gene, RAP1GAP, promotes the hydrolysis of bound GTP and hence returns RAP1 to the inactive state whereas other proteins, guanine nucleotide exchange factors (GEFs), act as RAP1 activators by facilitating the conversion of RAP1 from the GDP- to the GTP-bound form. In general, ras subfamily proteins, such as RAP1, play key roles in receptor-linked signaling pathways that control cell growth and differentiation. RAP1 plays a role in diverse processes such as cell proliferation, adhesion, differentiation, and embryogenesis. Alternative splicing results in multiple transcript variants encoding distinct proteins. [provided by RefSeq, Aug 2011]

RAP1GAP links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.031151295).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RAP1GAP	NM_002885.4 linkuse as main transcript	c.1928C>T	p.Ala643Val	missense_variant	23/25	ENST00000374765.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RAP1GAP	ENST00000374765.9 linkuse as main transcript	c.1928C>T	p.Ala643Val	missense_variant	23/25	1	NM_002885.4	A1	P47736-1

Frequencies

GnomAD3 genomes

AF:

0.000408

AC:

AN:

152046

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000750

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000334

AC:

AN:

203422

Hom.:

AF XY:

0.000319

AC XY:

AN XY:

109676

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000343

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000771

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000719

Gnomad OTH exome

AF:

0.000194

GnomAD4 exome

AF:

0.000493

AC:

705

AN:

1431006

Hom.:

Cov.:

AF XY:

0.000477

AC XY:

338

AN XY:

708910

show subpopulations

Gnomad4 AFR exome

AF:

0.0000607

Gnomad4 AMR exome

AF:

0.0000250

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000244

Gnomad4 FIN exome

AF:

0.000137

Gnomad4 NFE exome

AF:

0.000618

Gnomad4 OTH exome

AF:

0.000254

GnomAD4 genome

AF:

0.000407

AC:

AN:

152164

Hom.:

Cov.:

AF XY:

0.000363

AC XY:

AN XY:

74392

show subpopulations

Gnomad4 AFR

AF:

0.000193

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000941

Gnomad4 NFE

AF:

0.000750

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000650

Hom.:

Bravo

AF:

0.000446

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000456

AC:

ESP6500EA

AF:

0.000701

AC:

ExAC

AF:

0.000282

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 16, 2022

The c.2120C>T (p.A707V) alteration is located in exon 23 (coding exon 23) of the RAP1GAP gene. This alteration results from a C to T substitution at nucleotide position 2120, causing the alanine (A) at amino acid position 707 to be replaced by a valine (V). 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

0.077

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.27

CADD

Uncertain

DANN

Uncertain

0.99

Eigen

Benign

-0.36

Eigen_PC

Benign

-0.23

FATHMM_MKL

Benign

0.37

LIST_S2

Benign

0.85

D;D;D;T;D

M_CAP

Benign

0.081

MetaRNN

Benign

0.031

T;T;T;T;T

MetaSVM

Benign

-0.49

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Benign

0.39

REVEL

Benign

0.23

Sift4G

Benign

0.32

T;T;T;T;T

Polyphen

0.15, 0.0010

.;.;B;B;.

Vest4

0.38

MVP

0.22

ClinPred

0.040

GERP RS

3.3

Varity_R

0.081

gMVP

0.11

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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