NM_001082538.3:c.512A>G

Variant summary

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

The NM_001082538.3(TCTN1):​c.512A>G​(p.Asp171Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000656 in 152,330 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Consequence

TCTN1
NM_001082538.3 missense

Scores

11
7

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.23

Publications

0 publications found
Variant links:
Genes affected
TCTN1 (HGNC:26113): (tectonic family member 1) This gene encodes a member of a family of secreted and transmembrane proteins. The orthologous gene in mouse functions downstream of smoothened and rab23 to modulate hedgehog signal transduction. This protein is a component of the tectonic-like complex, which forms a barrier between the ciliary axoneme and the basal body. A mutation in this gene was found in a family with Joubert syndrome-13. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2016]
HVCN1 (HGNC:28240): (hydrogen voltage gated channel 1) This gene encodes a voltage-gated protein channel protein expressed more highly in certain cells of the immune system. Phagocytic cells produce superoxide anions which require this channel protein, and in B cells this same process facilitates antibody production. This same channel protein, however, can also regulate functions in other cells including spermatozoa. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2012]

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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=0.3263837).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001082538.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TCTN1
NM_001082538.3
MANE Select
c.512A>Gp.Asp171Gly
missense
Exon 4 of 15NP_001076007.1Q2MV58-2
TCTN1
NM_001082537.3
c.512A>Gp.Asp171Gly
missense
Exon 4 of 15NP_001076006.1Q2MV58-1
TCTN1
NM_024549.6
c.512A>Gp.Asp171Gly
missense
Exon 4 of 15NP_078825.2

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TCTN1
ENST00000397659.9
TSL:1 MANE Select
c.512A>Gp.Asp171Gly
missense
Exon 4 of 15ENSP00000380779.4Q2MV58-2
TCTN1
ENST00000551590.5
TSL:1
c.512A>Gp.Asp171Gly
missense
Exon 4 of 15ENSP00000448735.1Q2MV58-1
TCTN1
ENST00000397655.7
TSL:1
c.512A>Gp.Asp171Gly
missense
Exon 4 of 15ENSP00000380775.3Q2MV58-3

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152210
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000655
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.:
30
GnomAD4 genome
AF:
0.00000656
AC:
1
AN:
152330
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74490
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41586
American (AMR)
AF:
0.0000654
AC:
1
AN:
15290
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5190
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10614
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68034
Other (OTH)
AF:
0.00
AC:
0
AN:
2110
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Meckel-Gruber syndrome;C5979921:Joubert syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.11
BayesDel_addAF
Uncertain
0.065
T
BayesDel_noAF
Benign
-0.14
CADD
Benign
23
DANN
Uncertain
1.0
DEOGEN2
Benign
0.41
T
Eigen
Uncertain
0.35
Eigen_PC
Uncertain
0.36
FATHMM_MKL
Uncertain
0.80
D
LIST_S2
Uncertain
0.89
D
M_CAP
Uncertain
0.15
D
MetaRNN
Benign
0.33
T
MetaSVM
Uncertain
-0.19
T
MutationAssessor
Uncertain
2.6
M
PhyloP100
4.2
PrimateAI
Benign
0.32
T
PROVEAN
Uncertain
-2.4
N
REVEL
Uncertain
0.55
Sift
Benign
0.080
T
Sift4G
Benign
0.12
T
Polyphen
0.97
D
Vest4
0.23
MutPred
0.53
Gain of catalytic residue at P167 (P = 3e-04)
MVP
0.85
MPC
0.50
ClinPred
0.91
D
GERP RS
5.1
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.18
gMVP
0.57
Mutation Taster
=87/13
polymorphism

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

Other links and lift over

dbSNP: rs2136005462; hg19: chr12-111066611; API