6-121090980-T-C

Position:

chr6-121090980-T-C

Variant summary

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

The NM_152730.6(TBC1D32):c.3527A>G(p.His1176Arg) variant causes a missense change. The variant allele was found at a frequency of 0.00000868 in 1,613,374 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000068 ( 0 hom. )

Consequence

TBC1D32
NM_152730.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 4.55

Variant links:

Genes affected

TBC1D32 (HGNC:21485): (TBC1 domain family member 32) This gene encodes a TBC-domain containing protein. Studies of a similar protein in mouse and zebrafish suggest that the encoded protein is involved in sonic hedgehog signaling, and that it interacts with and stabilizes cell cycle-related kinase. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2014]

TBC1D32 links:

TBC1D32 (HGNC:):

TBC1D32 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/exons	MANE	Protein	UniProt
TBC1D32	NM_152730.6 linkuse as main transcript	c.3527A>G	p.His1176Arg	missense_variant	31/32	ENST00000398212.7	NP_689943.4	Q96NH3-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
TBC1D32	ENST00000398212.7 linkuse as main transcript	c.3527A>G	p.His1176Arg	missense_variant	31/32	5	NM_152730.6	ENSP00000381270.2	Q96NH3-1
TBC1D32	ENST00000275159.11 linkuse as main transcript	c.3650A>G	p.His1217Arg	missense_variant	32/33	5		ENSP00000275159.6	Q96NH3-4
TBC1D32	ENST00000464622.5 linkuse as main transcript	n.*4167A>G		non_coding_transcript_exon_variant	35/36	2		ENSP00000428839.1	Q96NH3-5
TBC1D32	ENST00000464622.5 linkuse as main transcript	n.*4167A>G		3_prime_UTR_variant	35/36	2		ENSP00000428839.1	Q96NH3-5

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

151990

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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

GnomAD3 exomes

AF:

0.00000803

AC:

AN:

249158

Hom.:

AF XY:

0.00000740

AC XY:

AN XY:

135212

show subpopulations

Gnomad AFR exome

AF:

0.0000646

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:

0.00

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.00000684

AC:

AN:

1461268

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

726952

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000112

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:

0.00

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152106

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74346

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000197

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000416

ExAC

AF:

0.00000828

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 17, 2023

The c.3527A>G (p.H1176R) alteration is located in exon 31 (coding exon 31) of the TBC1D32 gene. This alteration results from a A to G substitution at nucleotide position 3527, causing the histidine (H) at amino acid position 1176 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 12, 2024

This sequence change replaces histidine, which is basic and polar, with arginine, which is basic and polar, at codon 1176 of the TBC1D32 protein (p.His1176Arg). This variant is present in population databases (rs757868336, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with TBC1D32-related conditions. ClinVar contains an entry for this variant (Variation ID: 2547813). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.34

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.23

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.14

.;T

Eigen

Uncertain

0.62

Eigen_PC

Uncertain

0.61

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.89

D;D

M_CAP

Benign

0.0091

MetaRNN

Uncertain

0.63

D;D

MetaSVM

Benign

-1.2

MutationAssessor

Uncertain

2.7

.;M

PROVEAN

Uncertain

-3.5

D;D

REVEL

Benign

0.17

Sift

Uncertain

0.0080

D;D

Sift4G

Uncertain

0.014

D;D

Polyphen

1.0

.;D

Vest4

0.69

MutPred

0.41

.;Loss of sheet (P = 0.0357);

MVP

0.67

MPC

0.30

ClinPred

0.94

GERP RS

5.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.58

gMVP

0.49

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