Genetic Variant NM_018317.4:c.785C>T (chr4-26673857-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_018317.4(TBC1D19):c.785C>T(p.Ala262Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000132 in 151,842 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 31)

Consequence

TBC1D19
NM_018317.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.08

Publications

0 publications found

Variant links:

Genes affected

TBC1D19 (HGNC:25624): (TBC1 domain family member 19) Predicted to enable GTPase activator activity. Predicted to be involved in regulation of catalytic activity. [provided by Alliance of Genome Resources, Apr 2022]

TBC1D19 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28546217).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018317.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TBC1D19	NM_018317.4	MANE Select	c.785C>T	p.Ala262Val	missense	Exon 11 of 21	NP_060787.2	Q8N5T2-1
	TBC1D19	NM_001292054.2		c.590C>T	p.Ala197Val	missense	Exon 8 of 18	NP_001278983.1	Q8N5T2-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TBC1D19	ENST00000264866.9	TSL:1 MANE Select	c.785C>T	p.Ala262Val	missense	Exon 11 of 21	ENSP00000264866.4	Q8N5T2-1
TBC1D19	ENST00000511789.5	TSL:1	c.590C>T	p.Ala197Val	missense	Exon 8 of 18	ENSP00000425569.1	Q8N5T2-2
TBC1D19	ENST00000502873.5	TSL:1	n.895C>T		non_coding_transcript_exon	Exon 11 of 20

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151842

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000484

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151842

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74134

show subpopulations

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

African (AFR)

AF:

0.0000484

AC:

AN:

41340

American (AMR)

AF:

0.00

AC:

AN:

15212

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10580

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67934

Other (OTH)

AF:

0.00

AC:

AN:

2082

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000203476), 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:

0.000132

Hom.:

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

Benign

0.26

BayesDel_addAF

Benign

-0.054

BayesDel_noAF

Benign

-0.32

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.19

Eigen

Benign

0.14

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.96

M_CAP

Benign

0.010

MetaRNN

Benign

0.29

MetaSVM

Benign

-0.90

MutationAssessor

Benign

2.0

PhyloP100

4.1

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-2.3

REVEL

Benign

0.12

Sift

Uncertain

0.017

Sift4G

Uncertain

0.045

Polyphen

0.079

Vest4

0.56

MVP

0.64

MPC

0.32

ClinPred

0.85

GERP RS

5.2

Varity_R

0.21

gMVP

0.45

Mutation Taster

=50/50

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over