17-82921536-C-T

Position:

chr17-82921536-C-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 2P and 9B. PM2BP4_StrongBP6BS1

The NM_005993.5(TBCD):c.2137C>T(p.His713Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000483 in 1,614,046 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000027 ( 1 hom. )

Consequence

TBCD
NM_005993.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 2.46

Variant links:

Genes affected

TBCD (HGNC:11581): (tubulin folding cofactor D) Cofactor D is one of four proteins (cofactors A, D, E, and C) involved in the pathway leading to correctly folded beta-tubulin from folding intermediates. Cofactors A and D are believed to play a role in capturing and stabilizing beta-tubulin intermediates in a quasi-native confirmation. Cofactor E binds to the cofactor D/beta-tubulin complex; interaction with cofactor C then causes the release of beta-tubulin polypeptides that are committed to the native state. [provided by RefSeq, Jul 2008]

TBCD links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.063402176).

BP6

Variant 17-82921536-C-T is Benign according to our data. Variant chr17-82921536-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 2058015.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000256 (39/152336) while in subpopulation AFR AF= 0.000914 (38/41582). AF 95% confidence interval is 0.000684. There are 0 homozygotes in gnomad4. There are 19 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TBCD	NM_005993.5 linkuse as main transcript	c.2137C>T	p.His713Tyr	missense_variant	25/39	ENST00000355528.9	NP_005984.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TBCD	ENST00000355528.9 linkuse as main transcript	c.2137C>T	p.His713Tyr	missense_variant	25/39	1	NM_005993.5	ENSP00000347719	P1	Q9BTW9-1

Frequencies

GnomAD3 genomes

AF:

0.000237

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000844

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.0000682

AC:

AN:

249278

Hom.:

AF XY:

0.0000370

AC XY:

AN XY:

135230

show subpopulations

Gnomad AFR exome

AF:

0.000775

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000267

AC:

AN:

1461710

Hom.:

Cov.:

AF XY:

0.0000275

AC XY:

AN XY:

727138

show subpopulations

Gnomad4 AFR exome

AF:

0.000956

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.000256

AC:

AN:

152336

Hom.:

Cov.:

AF XY:

0.000255

AC XY:

AN XY:

74486

show subpopulations

Gnomad4 AFR

AF:

0.000914

Gnomad4 AMR

AF:

0.0000654

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

Alfa

AF:

0.0000397

Hom.:

Bravo

AF:

0.000287

ESP6500AA

AF:

0.00140

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000908

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 12, 2021

The c.2137C>T (p.H713Y) alteration is located in exon 25 (coding exon 25) of the TBCD gene. This alteration results from a C to T substitution at nucleotide position 2137, causing the histidine (H) at amino acid position 713 to be replaced by a tyrosine (Y). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 23, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.088

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.43

CADD

Benign

9.9

DANN

Benign

0.64

DEOGEN2

Benign

0.037

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

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.029

LIST_S2

Uncertain

0.89

D;D;D;D;D;D;D

M_CAP

Benign

0.052

MetaRNN

Benign

0.063

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

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.69

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

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.30

PROVEAN

Benign

-1.0

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

REVEL

Benign

0.18

Sift

Benign

0.075

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

Sift4G

Benign

1.0

T;T;T;D;T;T;D

Polyphen

0.33

B;.;.;.;.;.;.

Vest4

0.18

MVP

0.41

MPC

0.35

ClinPred

0.013

GERP RS

2.7

Varity_R

0.028

gMVP

0.24

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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