rs200926181

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_019066.5(MAGEL2):c.2074G>A(p.Val692Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0032 in 1,567,664 control chromosomes in the GnomAD database, including 41 homozygotes. In-silico tool predicts a benign outcome for this variant. 9/13 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. V692V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0020 ( 5 hom., cov: 32)

Exomes 𝑓: 0.0033 ( 36 hom. )

Consequence

MAGEL2
NM_019066.5 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 0.387

Publications

2 publications found

Variant links:

Genes affected

MAGEL2 (HGNC:6814): (MAGE family member L2) Prader-Willi syndrome (PWS) is caused by the loss of expression of imprinted genes in chromosome 15q11-q13 region. Affected individuals exhibit neonatal hypotonia, developmental delay, and childhood-onset obesity. Necdin (NDN), a gene involved in the terminal differentiation of neurons, localizes to this region of the genome and has been implicated as one of the genes responsible for the etiology of PWS. This gene is structurally similar to NDN, is also localized to the PWS chromosomal region, and is paternally imprinted, suggesting a possible role for it in PWS. [provided by RefSeq, Oct 2010]

MAGEL2 Gene-Disease associations (from GenCC):

Schaaf-Yang syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, G2P, Illumina

MAGEL2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.003316313).

BP6

Variant 15-23645669-C-T is Benign according to our data. Variant chr15-23645669-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 193400.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.00205 (312/152352) while in subpopulation SAS AF = 0.0193 (93/4830). AF 95% confidence interval is 0.0161. There are 5 homozygotes in GnomAd4. There are 171 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 312 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_019066.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAGEL2	NM_019066.5	MANE Select	c.2074G>A	p.Val692Ile	missense	Exon 1 of 1	NP_061939.3	Q9UJ55

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAGEL2	ENST00000650528.1	MANE Select	c.2074G>A	p.Val692Ile	missense	Exon 1 of 1	ENSP00000497810.1	Q9UJ55

Frequencies

GnomAD3 genomes

AF:

0.00206

AC:

313

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000386

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000654

Gnomad ASJ

AF:

0.00547

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.0194

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00248

Gnomad OTH

AF:

0.00191

GnomAD2 exomes

AF:

0.00388

AC:

749

AN:

192994

AF XY:

0.00468

show subpopulations

Gnomad AFR exome

AF:

0.000637

Gnomad AMR exome

AF:

0.000992

Gnomad ASJ exome

AF:

0.00389

Gnomad EAS exome

AF:

0.000191

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00266

Gnomad OTH exome

AF:

0.00392

GnomAD4 exome

AF:

0.00332

AC:

4700

AN:

1415312

Hom.:

Cov.:

AF XY:

0.00380

AC XY:

2662

AN XY:

699806

show subpopulations

African (AFR)

AF:

0.000531

AC:

AN:

32006

American (AMR)

AF:

0.00106

AC:

AN:

37748

Ashkenazi Jewish (ASJ)

AF:

0.00365

AC:

AN:

22994

East Asian (EAS)

AF:

0.000128

AC:

AN:

39058

South Asian (SAS)

AF:

0.0201

AC:

1560

AN:

77554

European-Finnish (FIN)

AF:

0.0000198

AC:

AN:

50486

Middle Eastern (MID)

AF:

0.00940

AC:

AN:

5534

European-Non Finnish (NFE)

AF:

0.00248

AC:

2713

AN:

1091752

Other (OTH)

AF:

0.00392

AC:

228

AN:

58180

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

295

590

886

1181

1476

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

118

236

354

472

590

<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:

0.00205

AC:

312

AN:

152352

Hom.:

Cov.:

AF XY:

0.00230

AC XY:

171

AN XY:

74492

show subpopulations

African (AFR)

AF:

0.000385

AC:

AN:

41596

American (AMR)

AF:

0.000653

AC:

AN:

15314

Ashkenazi Jewish (ASJ)

AF:

0.00547

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5156

South Asian (SAS)

AF:

0.0193

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10632

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00248

AC:

169

AN:

68030

Other (OTH)

AF:

0.00189

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

100

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.00267

Hom.:

Bravo

AF:

0.00172

TwinsUK

AF:

0.00378

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.000268

AC:

ESP6500EA

AF:

0.00159

AC:

ExAC

AF:

0.00359

AC:

432

Asia WGS

AF:

0.00636

AC:

AN:

3476

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

not specified (2)

Prader-Willi syndrome;C5575066:Schaaf-Yang syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.72

BayesDel_noAF

Benign

-0.79

CADD

Benign

1.6

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.046

FATHMM_MKL

Benign

0.089

LIST_S2

Benign

0.44

MetaRNN

Benign

0.0033

PhyloP100

0.39

PrimateAI

Uncertain

0.51

Sift4G

Uncertain

0.043

Vest4

0.043

MVP

0.043

MPC

0.054

GERP RS

1.4

Varity_R

0.015

gMVP

0.11

Mutation Taster

=99/1

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

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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