chr15-23644726-G-C

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.3017C>G(p.Thr1006Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00454 in 1,613,800 control chromosomes in the GnomAD database, including 23 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0034 ( 2 hom., cov: 32)

Exomes 𝑓: 0.0047 ( 21 hom. )

Consequence

MAGEL2
NM_019066.5 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:12

Conservation

PhyloP100: 0.419

Publications

8 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: G2P, ClinGen, Illumina, Labcorp Genetics (formerly Invitae)

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=0.0063773096).

BP6

Variant 15-23644726-G-C is Benign according to our data. Variant chr15-23644726-G-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 193399.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00338 (514/152244) while in subpopulation NFE AF = 0.0059 (401/68014). AF 95% confidence interval is 0.00542. There are 2 homozygotes in GnomAd4. There are 240 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 514 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAGEL2	NM_019066.5 link	c.3017C>G	p.Thr1006Ser	missense_variant	Exon 1 of 1	ENST00000650528.1	NP_061939.3	Q9UJ55

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAGEL2	ENST00000650528.1 link	c.3017C>G	p.Thr1006Ser	missense_variant	Exon 1 of 1		NM_019066.5	ENSP00000497810.1		Q9UJ55

Frequencies

GnomAD3 genomes

AF:

0.00338

AC:

514

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000893

Gnomad AMI

AF:

0.00110

Gnomad AMR

AF:

0.000917

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00471

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00590

Gnomad OTH

AF:

0.00335

GnomAD2 exomes

AF:

0.00334

AC:

832

AN:

249152

AF XY:

0.00320

show subpopulations

Gnomad AFR exome

AF:

0.00117

Gnomad AMR exome

AF:

0.00145

Gnomad ASJ exome

AF:

0.000298

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00580

Gnomad NFE exome

AF:

0.00538

Gnomad OTH exome

AF:

0.00347

GnomAD4 exome

AF:

0.00466

AC:

6817

AN:

1461556

Hom.:

Cov.:

AF XY:

0.00452

AC XY:

3287

AN XY:

727064

show subpopulations

African (AFR)

AF:

0.000687

AC:

AN:

33480

American (AMR)

AF:

0.00183

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.000344

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000278

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00590

AC:

314

AN:

53258

Middle Eastern (MID)

AF:

0.000520

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00553

AC:

6147

AN:

1111862

Other (OTH)

AF:

0.00356

AC:

215

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

443

886

1328

1771

2214

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

228

456

684

912

1140

<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:

0.00338

AC:

514

AN:

152244

Hom.:

Cov.:

AF XY:

0.00322

AC XY:

240

AN XY:

74444

show subpopulations

African (AFR)

AF:

0.000890

AC:

AN:

41556

American (AMR)

AF:

0.000916

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.000576

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5160

South Asian (SAS)

AF:

0.000208

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00471

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00590

AC:

401

AN:

68014

Other (OTH)

AF:

0.00331

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

104

130

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:

0.00425

Hom.:

Bravo

AF:

0.00291

TwinsUK

AF:

0.00378

AC:

ALSPAC

AF:

0.00649

AC:

ESP6500AA

AF:

0.000748

AC:

ESP6500EA

AF:

0.00562

AC:

ExAC

AF:

0.00331

AC:

400

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00453

EpiControl

AF:

0.00474

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:12

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:7

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jun 17, 2021

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

May 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

MAGEL2: BP4, BS2 -

Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Nov 11, 2016

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:4

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Jun 02, 2015

Genetic Services Laboratory, University of Chicago

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Aug 27, 2014

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Prader-Willi syndrome;C5575066:Schaaf-Yang syndrome

Benign:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.69

BayesDel_noAF

Benign

-0.76

CADD

Benign

1.1

(source)

DANN

Benign

0.53

DEOGEN2

Benign

0.028

T;T

Eigen

Benign

-0.84

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.068

LIST_S2

Benign

0.22

.;T

M_CAP

Benign

0.0078

MetaRNN

Benign

0.0064

T;T

PhyloP100

0.42

PrimateAI

Benign

0.31

Sift4G

Benign

0.35

T;.

Vest4

0.022

MVP

0.043

MPC

0.059

ClinPred

0.00040

GERP RS

-1.8

Varity_R

0.028

gMVP

0.14

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

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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