6-121080820-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_152730.6(TBC1D32):​c.3725G>A​(p.Arg1242Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000558 in 1,613,702 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)
Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

TBC1D32
NM_152730.6 missense

Scores

4
6
8

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.68
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.759

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
TBC1D32NM_152730.6 linkuse as main transcriptc.3725G>A p.Arg1242Gln missense_variant 32/32 ENST00000398212.7 NP_689943.4 Q96NH3-1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
TBC1D32ENST00000398212.7 linkuse as main transcriptc.3725G>A p.Arg1242Gln missense_variant 32/325 NM_152730.6 ENSP00000381270.2 Q96NH3-1
TBC1D32ENST00000275159.11 linkuse as main transcriptc.3848G>A p.Arg1283Gln missense_variant 33/335 ENSP00000275159.6 Q96NH3-4
TBC1D32ENST00000464622.5 linkuse as main transcriptn.*4365G>A non_coding_transcript_exon_variant 36/362 ENSP00000428839.1 Q96NH3-5
TBC1D32ENST00000464622.5 linkuse as main transcriptn.*4365G>A 3_prime_UTR_variant 36/362 ENSP00000428839.1 Q96NH3-5

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
152074
Hom.:
0
Cov.:
31
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
GnomAD4 exome
AF:
0.00000547
AC:
8
AN:
1461628
Hom.:
0
Cov.:
30
AF XY:
0.00000825
AC XY:
6
AN XY:
727124
show subpopulations
Gnomad4 AFR exome
AF:
0.00
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:
0.00000630
Gnomad4 OTH exome
AF:
0.0000166
GnomAD4 genome
AF:
0.00000658
AC:
1
AN:
152074
Hom.:
0
Cov.:
31
AF XY:
0.0000135
AC XY:
1
AN XY:
74300
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:
0.00000756

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Inborn genetic diseases Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsFeb 28, 2023The c.3725G>A (p.R1242Q) alteration is located in exon 32 (coding exon 32) of the TBC1D32 gene. This alteration results from a G to A substitution at nucleotide position 3725, causing the arginine (R) at amino acid position 1242 to be replaced by a glutamine (Q). 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
Benign
0.19
BayesDel_addAF
Benign
-0.028
T
BayesDel_noAF
Benign
-0.28
CADD
Pathogenic
29
DANN
Pathogenic
1.0
DEOGEN2
Benign
0.078
.;T
Eigen
Uncertain
0.64
Eigen_PC
Uncertain
0.59
FATHMM_MKL
Uncertain
0.93
D
LIST_S2
Uncertain
0.91
D;D
M_CAP
Benign
0.053
D
MetaRNN
Pathogenic
0.76
D;D
MetaSVM
Benign
-0.96
T
MutationAssessor
Uncertain
2.7
.;M
PROVEAN
Benign
-2.2
N;N
REVEL
Uncertain
0.36
Sift
Pathogenic
0.0
D;D
Sift4G
Pathogenic
0.0
D;D
Polyphen
1.0
.;D
Vest4
0.68
MutPred
0.59
.;Loss of MoRF binding (P = 0.0352);
MVP
0.44
MPC
0.29
ClinPred
1.0
D
GERP RS
4.7
Varity_R
0.61
gMVP
0.36

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
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.

Other links and lift over

dbSNP: rs1775563391; hg19: chr6-121401966; API