Genetic Variant RAPGEF1:p.Met1218Ile (chr9-131579635-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001377935.1(RAPGEF1):c.3654G>T(p.Met1218Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,564 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 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 nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M1218L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

RAPGEF1
NM_001377935.1 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.26

Publications

0 publications found

Variant links:

Genes affected

RAPGEF1 (HGNC:4568): (Rap guanine nucleotide exchange factor 1) This gene encodes a human guanine nucleotide exchange factor. It transduces signals from CRK by binding the SH3 domain of CRK, and activating several members of the Ras family of GTPases. This signaling cascade that may be involved in apoptosis, integrin-mediated signal transduction, and cell transformation. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some variants has not been determined. [provided by RefSeq, Jul 2008]

RAPGEF1 links:

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ACMG classification

Classification was made for transcript

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=0.04173544).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RAPGEF1	NM_001377935.1 link	c.3654G>T	p.Met1218Ile	missense_variant	Exon 27 of 27	ENST00000683357.1	NP_001364864.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RAPGEF1	ENST00000683357.1 link	c.3654G>T	p.Met1218Ile	missense_variant	Exon 27 of 27		NM_001377935.1	ENSP00000508246.1		A0A804HL87
RAPGEF1	ENST00000372189.7 link	c.3096G>T	p.Met1032Ile	missense_variant	Exon 24 of 24	1		ENSP00000361263.2		Q13905-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461564

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727068

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53396

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111762

Other (OTH)

AF:

0.0000166

AC:

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.56

CADD

Benign

(source)

DANN

Benign

0.82

DEOGEN2

Benign

0.17

T;.;.

Eigen

Benign

-0.84

Eigen_PC

Benign

-0.58

FATHMM_MKL

Benign

0.69

LIST_S2

Benign

0.63

T;T;T

M_CAP

Benign

0.0063

MetaRNN

Benign

0.042

T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

-1.9

N;.;.

PhyloP100

2.3

PrimateAI

Uncertain

0.70

PROVEAN

Benign

0.95

N;N;N

REVEL

Benign

0.084

Sift

Benign

0.66

T;T;T

Sift4G

Benign

0.67

T;T;T

Polyphen

0.0

B;.;B

Vest4

0.12

MutPred

0.48

Loss of helix (P = 0.028);.;.;

MVP

0.13

MPC

1.2

ClinPred

0.60

GERP RS

3.9

Varity_R

0.10

gMVP

0.52

Mutation Taster

=99/1

polymorphism

(source)

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

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9-131579635-C-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over