1-235380161-TTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTG-TTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTG

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP6BA1

The NM_003193.5(TBCE):c.100+64_100+65delGT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0462 in 1,120,498 control chromosomes in the GnomAD database, including 788 homozygotes. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.10 ( 691 hom., cov: 0)

Exomes 𝑓: 0.039 ( 97 hom. )

Consequence

TBCE
NM_003193.5 intron

Scores

Not classified

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: -0.401

Publications

1 publications found

Variant links:

Genes affected

TBCE (HGNC:11582): (tubulin folding cofactor E) Cofactor E 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. Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2008]

TBCE Gene-Disease associations (from GenCC):

hypoparathyroidism-retardation-dysmorphism syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Orphanet
early-onset progressive diffuse brain atrophy-microcephaly-muscle weakness-optic atrophy syndrome
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
encephalopathy, progressive, with amyotrophy and optic atrophy
Inheritance: AR Classification: STRONG, LIMITED Submitted by: Ambry Genetics, G2P
autosomal recessive Kenny-Caffey syndrome
Inheritance: AR Classification: MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics

TBCE links:

ENSG00000285053 (HGNC:):

ENSG00000285053 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP6

Variant 1-235380161-TTG-T is Benign according to our data. Variant chr1-235380161-TTG-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 296291.

BA1

GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.131 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
TBCE	NM_003193.5 link	c.100+64_100+65delGT	intron_variant	Intron 2 of 16	ENST00000642610.2	NP_003184.1	Q15813-1
TBCE	NM_001287801.2 link	c.100+64_100+65delGT	intron_variant	Intron 2 of 17		NP_001274730.1	Q15813-2
TBCE	NM_001079515.3 link	c.100+64_100+65delGT	intron_variant	Intron 2 of 16		NP_001072983.1
TBCE	NM_001287802.2 link	c.-211+64_-211+65delGT	intron_variant	Intron 2 of 15		NP_001274731.1	Q15813A0A2R8Y6Q1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBCE	ENST00000642610.2 link	c.100+13_100+14delTG		intron_variant	Intron 2 of 16		NM_003193.5	ENSP00000494796.1		Q15813-1
ENSG00000285053	ENST00000647186.1 link	c.100+13_100+14delTG		intron_variant	Intron 4 of 18			ENSP00000494775.1		Q15813-1

Frequencies

GnomAD3 genomes

AF:

0.100

AC:

13913

AN:

138950

Hom.:

694

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0364

Gnomad AMI

AF:

0.0719

Gnomad AMR

AF:

0.113

Gnomad ASJ

AF:

0.141

Gnomad EAS

AF:

0.0788

Gnomad SAS

AF:

0.136

Gnomad FIN

AF:

0.100

Gnomad MID

AF:

0.0912

Gnomad NFE

AF:

0.133

Gnomad OTH

AF:

0.0846

GnomAD4 exome

AF:

0.0386

AC:

37907

AN:

981426

Hom.:

AF XY:

0.0409

AC XY:

20525

AN XY:

502404

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0108

AC:

270

AN:

24972

American (AMR)

AF:

0.0373

AC:

1515

AN:

40664

Ashkenazi Jewish (ASJ)

AF:

0.0430

AC:

889

AN:

20688

East Asian (EAS)

AF:

0.0445

AC:

1479

AN:

33270

South Asian (SAS)

AF:

0.0583

AC:

4228

AN:

72478

European-Finnish (FIN)

AF:

0.0451

AC:

2049

AN:

45482

Middle Eastern (MID)

AF:

0.0423

AC:

187

AN:

4420

European-Non Finnish (NFE)

AF:

0.0366

AC:

25474

AN:

696904

Other (OTH)

AF:

0.0427

AC:

1816

AN:

42548

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.345

Heterozygous variant carriers

2244

4488

6732

8976

11220

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

422

844

1266

1688

2110

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.100

AC:

13902

AN:

139072

Hom.:

691

Cov.:

AF XY:

0.0984

AC XY:

6564

AN XY:

66724

show subpopulations

African (AFR)

AF:

0.0362

AC:

1387

AN:

38264

American (AMR)

AF:

0.114

AC:

1526

AN:

13430

Ashkenazi Jewish (ASJ)

AF:

0.141

AC:

466

AN:

3300

East Asian (EAS)

AF:

0.0785

AC:

371

AN:

4724

South Asian (SAS)

AF:

0.135

AC:

546

AN:

4054

European-Finnish (FIN)

AF:

0.100

AC:

825

AN:

8254

Middle Eastern (MID)

AF:

0.0949

AC:

AN:

274

European-Non Finnish (NFE)

AF:

0.133

AC:

8535

AN:

64004

Other (OTH)

AF:

0.0830

AC:

157

AN:

1892

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.419

Heterozygous variant carriers

486

971

1457

1942

2428

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

168

336

504

672

840

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0751

Hom.:

546

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Hypoparathyroidism-retardation-dysmorphism syndrome

Uncertain:2

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Jan 15, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

-0.40

Mutation Taster

=100/0

polymorphism (auto)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over