1-235448220-CAAAAAAAAAAAAAA-CAAAAAAAAAAAAAAAAAAA

Variant names:

Variant summary

Our verdict is . The variant received 0 ACMG points: 0P and 0B.

The NM_152490.5(B3GALNT2):c.*1981_*1985dupTTTTT variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00045 in 530,564 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00049 ( 0 hom., cov: 24)

Exomes 𝑓: 0.00045 ( 0 hom. )

Consequence

B3GALNT2
NM_152490.5 3_prime_UTR

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -2.40

Publications

0 publications found

Variant links:

Genes affected

B3GALNT2 (HGNC:28596): (beta-1,3-N-acetylgalactosaminyltransferase 2) This gene encodes a member of the glycosyltransferase 31 family. The encoded protein synthesizes GalNAc:beta-1,3GlcNAc, a novel carbohydrate structure, on N- and O-glycans. Alternatively spliced transcript variants that encode different isoforms have been described. [provided by RefSeq, Mar 2013]

B3GALNT2 links:

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: PanelApp Australia, Orphanet, G2P, Labcorp Genetics (formerly Invitae)
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, MODERATE, LIMITED Submitted by: G2P, PanelApp Australia, ClinGen, Ambry Genetics
autosomal recessive Kenny-Caffey syndrome
Inheritance: AR Classification: MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet

TBCE links:

ENSG00000285053 (HGNC:):

ENSG00000285053 links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript NM_152490.5, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_152490.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
B3GALNT2	NM_152490.5	MANE Select	c.1981_1985dupTTTTT	3_prime_UTR	Exon 12 of 12	NP_689703.1	Q8NCR0-1
TBCE	NM_003193.5	MANE Select	c.1400-113_1400-109dupAAAAA	intron	N/A	NP_003184.1	Q15813-1
TBCE	NM_001287801.2		c.1553-113_1553-109dupAAAAA	intron	N/A	NP_001274730.1	Q15813-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
B3GALNT2	ENST00000366600.8	TSL:1 MANE Select	c.1981_1985dupTTTTT	3_prime_UTR	Exon 12 of 12	ENSP00000355559.3	Q8NCR0-1
TBCE	ENST00000642610.2	MANE Select	c.1400-113_1400-109dupAAAAA	intron	N/A	ENSP00000494796.1	Q15813-1
ENSG00000285053	ENST00000647186.1		c.1400-113_1400-109dupAAAAA	intron	N/A	ENSP00000494775.1

Frequencies

GnomAD3 genomes

AF:

0.000489

AC:

AN:

65480

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000624

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000530

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000630

Gnomad FIN

AF:

0.000403

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000430

Gnomad OTH

AF:

0.00117

GnomAD4 exome

AF:

0.000445

AC:

207

AN:

465066

Hom.:

AF XY:

0.000436

AC XY:

110

AN XY:

252054

show subpopulations

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

African (AFR)

AF:

0.00232

AC:

AN:

11218

American (AMR)

AF:

0.000165

AC:

AN:

24284

Ashkenazi Jewish (ASJ)

AF:

0.000586

AC:

AN:

15350

East Asian (EAS)

AF:

0.0000708

AC:

AN:

28248

South Asian (SAS)

AF:

0.000457

AC:

AN:

52476

European-Finnish (FIN)

AF:

0.0000678

AC:

AN:

29510

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2968

European-Non Finnish (NFE)

AF:

0.000456

AC:

126

AN:

276066

Other (OTH)

AF:

0.000561

AC:

AN:

24946

⚠️ 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: 0.273

Heterozygous variant carriers

111

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<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:

0.000489

AC:

AN:

65498

Hom.:

Cov.:

AF XY:

0.000491

AC XY:

AN XY:

30530

show subpopulations

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

African (AFR)

AF:

0.000624

AC:

AN:

20840

American (AMR)

AF:

0.000529

AC:

AN:

5674

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

1634

East Asian (EAS)

AF:

0.00

AC:

AN:

1664

South Asian (SAS)

AF:

0.000634

AC:

AN:

1578

European-Finnish (FIN)

AF:

0.000403

AC:

AN:

2484

Middle Eastern (MID)

AF:

0.00

AC:

AN:

126

European-Non Finnish (NFE)

AF:

0.000429

AC:

AN:

30268

Other (OTH)

AF:

0.00115

AC:

AN:

868

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000536942), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.366

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

-2.4

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over