Genetic Variant NM_001385994.1:c.1882G>T (chr5-137952676-C-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_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

Publications

2 publications found

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 was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001385994.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FAM13B	NM_001385994.1	MANE Select	c.1882G>T	p.Val628Leu	missense	Exon 17 of 24	NP_001372923.1	A0A8I5KSB9
FAM13B	NM_001385921.1		c.1816G>T	p.Val606Leu	missense	Exon 17 of 24	NP_001372850.1	A0A2X0SG06
FAM13B	NM_016603.4		c.1816G>T	p.Val606Leu	missense	Exon 16 of 23	NP_057687.2	A0A2X0SG06

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FAM13B	ENST00000689681.1	MANE Select	c.1882G>T	p.Val628Leu	missense	Exon 17 of 24	ENSP00000509788.1	A0A8I5KSB9
FAM13B	ENST00000033079.7	TSL:1	c.1816G>T	p.Val606Leu	missense	Exon 16 of 23	ENSP00000033079.3	Q9NYF5-1
FAM13B	ENST00000420893.6	TSL:1	c.1816G>T	p.Val606Leu	missense	Exon 16 of 22	ENSP00000388521.2	Q9NYF5-2

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

GnomAD2 exomes

AF:

0.00000403

AC:

AN:

248360

AF XY:

0.00

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 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

African (AFR)

AF:

0.0000300

AC:

AN:

33326

American (AMR)

AF:

0.00

AC:

AN:

44186

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25972

East Asian (EAS)

AF:

0.00

AC:

AN:

39510

South Asian (SAS)

AF:

0.00

AC:

AN:

84736

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52502

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5742

European-Non Finnish (NFE)

AF:

0.00000722

AC:

AN:

1107794

Other (OTH)

AF:

0.0000167

AC:

AN:

60016

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

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

AF:

0.00000657

AC:

AN:

152160

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74334

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

41422

American (AMR)

AF:

0.00

AC:

AN:

15258

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5206

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68042

Other (OTH)

AF:

0.00

AC:

AN:

2090

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000151

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.89

BayesDel_addAF

Pathogenic

0.33

BayesDel_noAF

Pathogenic

0.24

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

Eigen

Pathogenic

0.84

Eigen_PC

Pathogenic

0.85

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

1.0

M_CAP

Uncertain

0.10

MetaRNN

Uncertain

0.65

MetaSVM

Pathogenic

0.91

MutationAssessor

Uncertain

2.5

PhyloP100

7.0

PrimateAI

Pathogenic

0.86

PROVEAN

Uncertain

-2.5

REVEL

Uncertain

0.55

Sift

Uncertain

0.0030

Sift4G

Uncertain

0.019

Polyphen

1.0

Vest4

0.79

MutPred

0.32

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

Mutation Taster

=68/32

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over