Genetic Variant NM_018723.4:c.220G>A (chr16-7518339-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_018723.4(RBFOX1):c.220G>A(p.Glu74Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,436 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E74Q) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

RBFOX1
NM_018723.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.27

Publications

0 publications found

Variant links:

Genes affected

RBFOX1 (HGNC:18222): (RNA binding fox-1 homolog 1) The Fox-1 family of RNA-binding proteins is evolutionarily conserved, and regulates tissue-specific alternative splicing in metazoa. Fox-1 recognizes a (U)GCAUG stretch in regulated exons or in flanking introns. The protein binds to the C-terminus of ataxin-2 and may contribute to the restricted pathology of spinocerebellar ataxia type 2 (SCA2). Ataxin-2 is the product of the SCA2 gene which causes familial neurodegenerative diseases. Fox-1 and ataxin-2 are both localized in the trans-Golgi network. Several alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2011]

RBFOX1 Gene-Disease associations (from GenCC):

epilepsy
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
neurodevelopmental disorder
Inheritance: AD Classification: LIMITED Submitted by: G2P
autism susceptibility 1
Inheritance: Unknown Classification: LIMITED Submitted by: Laboratory for Molecular Medicine

RBFOX1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RBFOX1	NM_018723.4 link	c.220G>A	p.Glu74Lys	missense_variant	Exon 5 of 16	ENST00000550418.6	NP_061193.2	Q9NWB1-1Q59HD3
RBFOX1	NM_145893.3 link	c.280G>A	p.Glu94Lys	missense_variant	Exon 2 of 14	ENST00000355637.9	NP_665900.1	Q9NWB1-5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RBFOX1	ENST00000550418.6 link	c.220G>A	p.Glu74Lys	missense_variant	Exon 5 of 16	1	NM_018723.4	ENSP00000450031.1		Q9NWB1-1
RBFOX1	ENST00000355637.9 link	c.280G>A	p.Glu94Lys	missense_variant	Exon 2 of 14	1	NM_145893.3	ENSP00000347855.4		Q9NWB1-5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461436

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727020

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44658

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39690

South Asian (SAS)

AF:

0.00

AC:

AN:

86138

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53394

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111792

Other (OTH)

AF:

0.00

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.39

BayesDel_addAF

Uncertain

0.13

BayesDel_noAF

Uncertain

-0.050

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.18

.;.;.;T;.;T;.;.;.;T;.;.;.;.;.;.

Eigen

Pathogenic

0.70

Eigen_PC

Pathogenic

0.68

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

D;D;D;.;D;D;D;D;D;D;D;D;D;D;D;D

M_CAP

Benign

0.069

MetaRNN

Uncertain

0.51

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-0.78

MutationAssessor

Uncertain

2.3

.;.;M;M;.;.;.;.;.;M;.;.;.;.;.;.

PhyloP100

9.3

PrimateAI

Pathogenic

0.79

PROVEAN

Uncertain

-2.7

.;D;D;D;D;D;D;D;D;D;D;D;D;D;.;.

REVEL

Benign

0.26

Sift

Uncertain

0.027

.;D;D;D;D;D;D;D;D;D;D;D;D;D;.;.

Sift4G

Benign

0.23

.;T;T;T;D;T;D;T;T;T;T;T;T;T;T;T

Polyphen

0.99, 0.99, 1.0, 1.0, 0.97, 1.0

.;.;D;D;D;D;D;.;.;D;D;D;D;.;.;.

Vest4

0.74, 0.77, 0.81, 0.79, 0.84, 0.82, 0.75, 0.81, 0.78, 0.84, 0.81, 0.86

MutPred

0.26

.;.;.;.;Gain of methylation at E117 (P = 0.0026);Gain of methylation at E117 (P = 0.0026);.;.;.;.;.;.;.;.;.;.;

MVP

0.24

MPC

0.016

ClinPred

0.99

GERP RS

4.7

Varity_R

0.75

gMVP

0.60

Mutation Taster

=29/71

disease causing

(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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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