chr22-33273861-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_133642.5(LARGE1):c.*566G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000862 in 382,616 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000087 ( 0 hom. )

Consequence

LARGE1
NM_133642.5 3_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: 0.320

Publications

0 publications found

Variant links:

Genes affected

LARGE1 (HGNC:6511): (LARGE xylosyl- and glucuronyltransferase 1) This gene encodes a member of the N-acetylglucosaminyltransferase gene family. It encodes a glycosyltransferase which participates in glycosylation of alpha-dystroglycan, and may carry out the synthesis of glycoprotein and glycosphingolipid sugar chains. It may also be involved in the addition of a repeated disaccharide unit. The protein encoded by this gene is the glycotransferase that adds the final xylose and glucuronic acid to alpha-dystroglycan and thereby allows alpha-dystroglycan to bind ligands including laminin 211 and neurexin. Mutations in this gene cause several forms of congenital muscular dystrophy characterized by cognitive disability and abnormal glycosylation of alpha-dystroglycan. Alternative splicing of this gene results in multiple transcript variants that encode the same protein. [provided by RefSeq, May 2018]

LARGE1 Gene-Disease associations (from GenCC):

muscular dystrophy-dystroglycanopathy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
muscular dystrophy-dystroglycanopathy type B6
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A6
Inheritance: AR Classification: STRONG Submitted by: Genomics England PanelApp
congenital muscular dystrophy with intellectual disability
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
muscular dystrophy-dystroglycanopathy, type A
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

LARGE1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.8).

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.0000854 (13/152228) while in subpopulation SAS AF = 0.00125 (6/4810). AF 95% confidence interval is 0.000543. There are 0 homozygotes in GnomAd4. There are 11 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_133642.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
LARGE1	NM_133642.5	MANE Select	c.*566G>A	3_prime_UTR	Exon 15 of 15	NP_598397.1	O95461-1
LARGE1	NM_001362949.2		c.*566G>A	3_prime_UTR	Exon 16 of 16	NP_001349878.1	O95461-1
LARGE1	NM_001362951.2		c.*566G>A	3_prime_UTR	Exon 15 of 15	NP_001349880.1	O95461-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
LARGE1	ENST00000397394.8	TSL:5 MANE Select	c.*566G>A	3_prime_UTR	Exon 15 of 15	ENSP00000380549.2	O95461-1
LARGE1	ENST00000354992.7	TSL:1	c.*566G>A	3_prime_UTR	Exon 16 of 16	ENSP00000347088.2	O95461-1
LARGE1	ENST00000402320.6	TSL:1	c.*566G>A	3_prime_UTR	Exon 14 of 14	ENSP00000385223.1	O95461-2

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152110

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00125

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.000478

GnomAD4 exome

AF:

0.0000868

AC:

AN:

230388

Hom.:

Cov.:

AF XY:

0.000103

AC XY:

AN XY:

117014

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

6730

American (AMR)

AF:

0.00

AC:

AN:

7768

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

8644

East Asian (EAS)

AF:

0.00

AC:

AN:

21080

South Asian (SAS)

AF:

0.00126

AC:

AN:

2372

European-Finnish (FIN)

AF:

0.00

AC:

AN:

18678

Middle Eastern (MID)

AF:

0.00166

AC:

AN:

1204

European-Non Finnish (NFE)

AF:

0.0000942

AC:

AN:

148664

Other (OTH)

AF:

0.0000656

AC:

AN:

15248

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

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:

0.0000854

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74428

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41538

American (AMR)

AF:

0.00

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00125

AC:

AN:

4810

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10610

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68008

Other (OTH)

AF:

0.000473

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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:

0.0000712

Hom.:

Bravo

AF:

0.0000642

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A6 (1)

Muscular dystrophy-dystroglycanopathy type B6 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.80

CADD

Benign

6.0

(source)

DANN

Benign

0.49

PhyloP100

0.32

Mutation Taster

=100/0

polymorphism

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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