Genetic Variant FAM13B:p.Val628Leu (chr5-137952676-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001385994.1(FAM13B):c.1882G>T(p.Val628Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000685 in 1,605,944 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

FAM13B
NM_001385994.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.96

Variant links:

Genes affected

FAM13B (HGNC:1335): (family with sequence similarity 13 member B) Predicted to enable GTPase activator activity. Predicted to be involved in regulation of small GTPase mediated signal transduction. Predicted to be located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

FAM13B 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 rank	MANE	Protein	UniProt
FAM13B	NM_001385994.1 link	c.1882G>T	p.Val628Leu	missense_variant	Exon 17 of 24	ENST00000689681.1	NP_001372923.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FAM13B	ENST00000689681.1 link	c.1882G>T	p.Val628Leu	missense_variant	Exon 17 of 24		NM_001385994.1	ENSP00000509788.1	A0A8I5KSB9
FAM13B	ENST00000033079.7 link	c.1816G>T	p.Val606Leu	missense_variant	Exon 16 of 23	1		ENSP00000033079.3	Q9NYF5-1
FAM13B	ENST00000420893.6 link	c.1816G>T	p.Val606Leu	missense_variant	Exon 16 of 22	1		ENSP00000388521.2	Q9NYF5-2
FAM13B	ENST00000425075.6 link	c.1528G>T	p.Val510Leu	missense_variant	Exon 16 of 22	1		ENSP00000394669.2	Q9NYF5-3

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152160

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000403

AC:

AN:

248360

Hom.:

AF XY:

0.00

AC XY:

AN XY:

134280

show subpopulations

Gnomad AFR exome

AF:

0.00

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:

0.00000884

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000688

AC:

AN:

1453784

Hom.:

Cov.:

AF XY:

0.00000553

AC XY:

AN XY:

723118

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.00

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:

0.00000722

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152160

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74334

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 08, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1816G>T (p.V606L) alteration is located in exon 16 (coding exon 14) of the FAM13B gene. This alteration results from a G to T substitution at nucleotide position 1816, causing the valine (V) at amino acid position 606 to be replaced by a leucine (L). 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

Pathogenic

0.89

BayesDel_addAF

Pathogenic

0.33

BayesDel_noAF

Pathogenic

0.24

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

T;.;.

Eigen

Pathogenic

0.84

Eigen_PC

Pathogenic

0.85

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

1.0

D;D;D

M_CAP

Uncertain

0.10

MetaRNN

Uncertain

0.65

D;D;D

MetaSVM

Pathogenic

0.91

MutationAssessor

Uncertain

2.5

M;.;M

PrimateAI

Pathogenic

0.86

PROVEAN

Uncertain

-2.5

N;D;N

REVEL

Uncertain

0.55

Sift

Uncertain

0.0030

D;D;D

Sift4G

Uncertain

0.019

D;D;D

Polyphen

1.0

D;.;D

Vest4

0.79

MutPred

0.32

Loss of catalytic residue at V606 (P = 0.031);.;Loss of catalytic residue at V606 (P = 0.031);

MVP

0.76

MPC

0.16

ClinPred

0.87

GERP RS

6.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.8

Varity_R

0.53

gMVP

0.32

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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