dbSNP rs754592022: TCTN1:p.Ala22Asp (chr12-110614247-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001082538.3(TCTN1):c.65C>A(p.Ala22Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000694 in 1,441,502 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

TCTN1
NM_001082538.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.79

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]

TCTN1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.21230781).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TCTN1	NM_001082538.3 link	c.65C>A	p.Ala22Asp	missense_variant	Exon 1 of 15	ENST00000397659.9	NP_001076007.1	Q2MV58-2B4DIB9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TCTN1	ENST00000397659.9 link	c.65C>A	p.Ala22Asp	missense_variant	Exon 1 of 15	1	NM_001082538.3	ENSP00000380779.4	Q2MV58-2
TCTN1	ENST00000551590.5 link	c.65C>A	p.Ala22Asp	missense_variant	Exon 1 of 15	1		ENSP00000448735.1	Q2MV58-1
TCTN1	ENST00000397655.7 link	c.65C>A	p.Ala22Asp	missense_variant	Exon 1 of 15	1		ENSP00000380775.3	Q2MV58-3
TCTN1	ENST00000397656.8 link	n.65C>A		non_coding_transcript_exon_variant	Exon 1 of 16	2		ENSP00000380776.4	J3KPW2
TCTN1	ENST00000480648.5 link	n.65C>A		non_coding_transcript_exon_variant	Exon 1 of 16	5		ENSP00000437196.1	E9PNE4
TCTN1	ENST00000495659.6 link	n.65C>A		non_coding_transcript_exon_variant	Exon 1 of 15	2		ENSP00000436673.2	E9PIB8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.94e-7

AC:

AN:

1441502

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

715258

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:

9.07e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Uncertain

0.037

BayesDel_noAF

Benign

-0.19

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.070

.;.;T;.;T;.

Eigen

Benign

-0.21

Eigen_PC

Benign

-0.040

FATHMM_MKL

Benign

0.61

LIST_S2

Benign

0.85

D;D;D;D;D;D

M_CAP

Uncertain

0.20

MetaRNN

Benign

0.21

T;T;T;T;T;T

MetaSVM

Benign

-0.86

MutationAssessor

Benign

1.7

.;.;L;L;.;L

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-1.8

.;.;N;N;.;N

REVEL

Benign

0.29

Sift

Uncertain

0.010

.;.;D;D;.;D

Sift4G

Uncertain

0.014

D;D;T;D;D;T

Polyphen

0.0060

B;.;B;B;.;B

Vest4

0.22

MutPred

0.26

Gain of catalytic residue at W17 (P = 0);Gain of catalytic residue at W17 (P = 0);Gain of catalytic residue at W17 (P = 0);Gain of catalytic residue at W17 (P = 0);Gain of catalytic residue at W17 (P = 0);Gain of catalytic residue at W17 (P = 0);

MVP

0.79

MPC

0.79

ClinPred

0.92

GERP RS

4.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.41

gMVP

0.50

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

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over