6-13316684-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS1

The NM_016495.6(TBC1D7):c.406G>A(p.Ala136Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000265 in 1,614,062 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00032 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00026 ( 1 hom. )

Consequence

TBC1D7
NM_016495.6 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 4.34

Publications

3 publications found

Variant links:

Genes affected

TBC1D7 (HGNC:21066): (TBC1 domain family member 7) This gene encodes a member of the TBC-domain containing protein family. The encoded protein functions as a subunit of the tuberous sclerosis TSC1-TSC2 complex which plays a role in the regulation of cellular growth and differentiation. Mutations in this gene have been associated with autosomal recessive megalencephaly. Alternative splicing results in multiple transcript variants. Naturally occurring readthrough transcription occurs between this locus and downstream LOC100130357. [provided by RefSeq, Jan 2016]

TBC1D7 Gene-Disease associations (from GenCC):

macrocephaly/megalencephaly syndrome, autosomal recessive
Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp

TBC1D7 links:

TBC1D7-LOC100130357 (HGNC:):

TBC1D7-LOC100130357 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0091024935).

BP6

Variant 6-13316684-C-T is Benign according to our data. Variant chr6-13316684-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 436956.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000315 (48/152278) while in subpopulation EAS AF = 0.00925 (48/5188). AF 95% confidence interval is 0.00717. There are 0 homozygotes in GnomAd4. There are 28 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBC1D7	NM_016495.6 link	c.406G>A	p.Ala136Thr	missense_variant	Exon 5 of 8	ENST00000379300.8	NP_057579.1	Q9P0N9-1A0A024QZX0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBC1D7	ENST00000379300.8 link	c.406G>A	p.Ala136Thr	missense_variant	Exon 5 of 8	1	NM_016495.6	ENSP00000368602.3		Q9P0N9-1

Frequencies

GnomAD3 genomes

AF:

0.000322

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:

0.00942

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

GnomAD2 exomes

AF:

0.000827

AC:

208

AN:

251414

AF XY:

0.000729

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0110

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000260

AC:

380

AN:

1461784

Hom.:

Cov.:

AF XY:

0.000256

AC XY:

186

AN XY:

727200

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.0000447

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00902

AC:

358

AN:

39700

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53412

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000450

AC:

AN:

1111946

Other (OTH)

AF:

0.000215

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

101

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.000315

AC:

AN:

152278

Hom.:

Cov.:

AF XY:

0.000376

AC XY:

AN XY:

74468

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41554

American (AMR)

AF:

0.00

AC:

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00925

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

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:

0.000500

Hom.:

Bravo

AF:

0.000612

ExAC

AF:

0.000774

AC:

Asia WGS

AF:

0.00260

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

May 09, 2016

Genetic Services Laboratory, University of Chicago

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Apr 06, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

TBC1D7-related disorder

Benign:1

May 24, 2019

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.17

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.041

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

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.96

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

MetaRNN

Benign

0.0090

T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.1

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

PhyloP100

4.3

PrimateAI

Uncertain

0.58

PROVEAN

Benign

-1.1

.;N;N;N;.;N;N;N;N;N;N;N

REVEL

Benign

0.11

Sift

Benign

0.15

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

Sift4G

Benign

0.43

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

Polyphen

0.89

P;P;P;P;.;.;.;.;D;.;.;.

Vest4

0.65

MVP

0.28

MPC

0.53

ClinPred

0.063

GERP RS

5.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.20

Mutation Taster

=88/12

polymorphism

(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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over