Variant chr6-10529940-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_145649.5(GCNT2):c.925+104C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00252 in 969,140 control chromosomes in the GnomAD database, including 36 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.010 ( 25 hom., cov: 32)

Exomes 𝑓: 0.0011 ( 11 hom. )

Consequence

GCNT2
NM_145649.5 intron

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.734

Variant links:

Genes affected

GCNT2 (HGNC:4204): (glucosaminyl (N-acetyl) transferase 2 (I blood group)) This gene encodes the enzyme responsible for formation of the blood group I antigen. The i and I antigens are distinguished by linear and branched poly-N-acetyllactosaminoglycans, respectively. The encoded protein is the I-branching enzyme, a beta-1,6-N-acetylglucosaminyltransferase responsible for the conversion of fetal i antigen to adult I antigen in erythrocytes during embryonic development. Mutations in this gene have been associated with adult i blood group phenotype. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

GCNT2 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.85).

BP6

Variant 6-10529940-C-A is Benign according to our data. Variant chr6-10529940-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 1191362.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0102 (1545/152066) while in subpopulation AFR AF= 0.0351 (1456/41474). AF 95% confidence interval is 0.0336. There are 25 homozygotes in gnomad4. There are 722 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 25 BG,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GCNT2	NM_145649.5 linkuse as main transcript	c.925+104C>A		intron_variant		ENST00000495262.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GCNT2	ENST00000495262.7 linkuse as main transcript	c.925+104C>A		intron_variant		2	NM_145649.5	P3	Q8N0V5-1

Frequencies

GnomAD3 genomes

AF:

0.0101

AC:

1540

AN:

151948

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0351

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00433

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00318

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00813

GnomAD4 exome

AF:

0.00110

AC:

901

AN:

817074

Hom.:

Cov.:

AF XY:

0.000895

AC XY:

380

AN XY:

424356

show subpopulations

Gnomad4 AFR exome

AF:

0.0336

Gnomad4 AMR exome

AF:

0.00279

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000298

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000610

Gnomad4 OTH exome

AF:

0.00250

GnomAD4 genome

AF:

0.0102

AC:

1545

AN:

152066

Hom.:

Cov.:

AF XY:

0.00972

AC XY:

722

AN XY:

74292

show subpopulations

Gnomad4 AFR

AF:

0.0351

Gnomad4 AMR

AF:

0.00432

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000208

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00805

Alfa

AF:

0.00161

Hom.:

Bravo

AF:

0.0115

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jul 31, 2018	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.85

CADD

Benign

0.52

DANN

Benign

0.51

Splicing

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