Human Gene Module / Chromosome 15 / MAGEL2

MAGEL2MAGE-like 2

Score
2S
Strong Candidate, Syndromic Criteria 2.1, Syndromic
Autism Reports / Total Reports
0 / 9
Rare Variants / Common Variants
25 / 0
Aliases
MAGEL2, NDNL1,  nM15
Associated Syndromes
Schaaf-Yang syndrome
Genetic Category
Rare Single Gene Mutation, Syndromic
Chromosome Band
15q11.2
Associated Disorders
ASD, ID, DD/NDD
Relevance to Autism

Truncating variants on the paternal allele of the MAGEL2 gene were identified in four individuals presenting with autism spectrum disorder (ASD), intellectual disability and a varying degree of clinical and behavioral features of Prader-Willi syndrome (PWS) (Schaaf et al., 2013).

Molecular Function

The protein encoded by this paternally-imprinted gene may enhance ubiquitin ligase activity of RING-type zinc finger-containing E3 ubiquitin-protein ligases and has been proposed to act through recruitment and/or stabilization of the Ubl-conjugating enzyme (E2) at the E3:substrate complex. This gene may play a role in Prader-Willi syndrome (PWS, OMIM 176270), a contiguous gene syndrome characterized by muscular hypotonia, mental retardation, short stature, obesity, hypogonadotropic hypogonadism, and small hands and feet that results from inactivity of the paternal copies of a number of genes on 15q11, through deletion or disruption of these genes or maternal uniparental disomy 15.

Reports related to MAGEL2 (9 Reports)
# Type Title Author, Year Autism Report Associated Disorders
1 Primary Truncating mutations of MAGEL2 cause Prader-Willi phenotypes and autism. Schaaf CP , et al. (2013) No ASD, ID
2 Support Effectiveness of exome and genome sequencing guided by acuity of illness for diagnosis of neurodevelopmental disorders. Soden SE , et al. (2014) No DD, ASD (1 case)
3 Recent recommendation Truncating Mutations of MAGEL2, a Gene within the Prader-Willi Locus, Are Responsible for Severe Arthrogryposis. Mejlachowicz D , et al. (2015) No -
4 Recent recommendation The phenotypic spectrum of Schaaf-Yang syndrome: 18 new affected individuals from 14 families. Fountain MD , et al. (2016) No DD, ID, ASD (4 cases), seizures (2 cases)
5 Recent recommendation Loss of Magel2 impairs the development of hypothalamic Anorexigenic circuits. Maillard J , et al. (2016) No -
6 Support Meta-analysis of 2,104 trios provides support for 10 new genes for intellectual disability. Lelieveld SH , et al. (2016) No -
7 Support Clinical exome sequencing: results from 2819 samples reflecting 1000 families. Trujillano D , et al. (2016) No DD, microcephaly
8 Support A De Novo Nonsense Mutation in MAGEL2 in a Patient Initially Diagnosed as Opitz-C: Similarities Between Schaaf-Yang and Opitz-C Syndromes. Urreizti R , et al. (2017) No Features of Opitz trigonocephaly C syndrome, ID
9 Support Genomic diagnosis for children with intellectual disability and/or developmental delay. Bowling KM , et al. (2017) No -
Rare Variants   (25)
Status Allele Change Residue Change Variant Type Inheritance Pattern Parental Transmission Family Type PubMed ID Author, Year
c.1652delT p.Val551AspfsTer151 frameshift_variant De novo - Simplex 24076603 Schaaf CP , et al. (2013)
c.1802delC p.Pro601GlnfsTer101 frameshift_variant Unknown (not maternal) - - 24076603 Schaaf CP , et al. (2013)
c.3181_3182delAT p.Ile1061HisfsTer7 frameshift_variant De novo - - 24076603 Schaaf CP , et al. (2013)
c.3124C>T p.Gln1024Ter stop_gained De novo - - 24076603 Schaaf CP , et al. (2013)
c.1996dupC p.Gln666ProfsTer47 frameshift_variant De novo - Multiplex 25473036 Soden SE , et al. (2014)
c.1996delC p.Gln666SerfsTer36 frameshift_variant Familial Paternal Multiplex 26365340 Mejlachowicz D , et al. (2015)
c.2118delT p.Leu708TrpfsTer7 frameshift_variant De novo - Simplex 26365340 Mejlachowicz D , et al. (2015)
c.1996dupC p.Gln666fs frameshift_variant Familial Paternal Extended multiplex 27195816 Fountain MD , et al. (2016)
c.3235G>T p.Glu1079Ter stop_gained Familial Paternal - 27195816 Fountain MD , et al. (2016)
c.1912C>T p.Gln638Ter stop_gained De novo - - 27195816 Fountain MD , et al. (2016)
c.1996dupC p.Gln666fs frameshift_variant Familial Paternal Multiplex 27195816 Fountain MD , et al. (2016)
c.1996dupC p.Gln666fs frameshift_variant De novo - - 27195816 Fountain MD , et al. (2016)
c.1621C>T p.Gln541Ter stop_gained Familial Paternal - 27195816 Fountain MD , et al. (2016)
c.1996dupC p.Gln666fs frameshift_variant De novo - - 27195816 Fountain MD , et al. (2016)
c.1996dupC p.Gln666fs frameshift_variant De novo - - 27195816 Fountain MD , et al. (2016)
c.2873G>A p.Trp958Ter stop_gained Unknown - - 27195816 Fountain MD , et al. (2016)
c.1996dupC p.Gln666fs frameshift_variant De novo - - 27195816 Fountain MD , et al. (2016)
c.1580delC p.Pro527fs frameshift_variant Unknown - - 27195816 Fountain MD , et al. (2016)
c.1801_1802del p.Pro601fs frameshift_variant Unknown - - 27195816 Fountain MD , et al. (2016)
c.1996dupC p.Gln666fs frameshift_variant De novo - - 27195816 Fountain MD , et al. (2016)
c.1996dupC p.Gln666fs frameshift_variant Familial Paternal Extended multiplex 27195816 Fountain MD , et al. (2016)
c.1996dup p.Gln666fs frameshift_variant De novo - - 27479843 Lelieveld SH , et al. (2016)
c.1996dup p.Gln666ProfsTer47 frameshift_variant De novo - Simplex 27848944 Trujillano D , et al. (2016)
c.1912C>T p.Gln638Ter stop_gained De novo - Simplex 28281571 Urreizti R , et al. (2017)
c.3208G>T p.Glu1070Ter stop_gained De novo - - 28554332 Bowling KM , et al. (2017)
Common Variants  

No common variants reported.

SFARI Gene score
2S

Strong Candidate, Syndromic

A de novo frameshift variant on the paternal allele of the MAGEL2 gene was identified in a male patient with ASD, mild intellectual disability, and a history of Prader-Willi-like phenotypes; this variant was absent in dbSNP, 1000 Genomes, and ESP5000 . A search of the Baylor College of Medicine Whole-Genome Laboratory database identified an additional three subjects with loss-of-function variants on the paternal allele of MAGEL2 (two of which were de novo) who also presented with ASD, intellectual disability, and some or all of the clinical and behavioral features of Prader-Willi syndrome (PMID 24076603). A frameshift variant in MAGEL2 (c.1996dupC;p.Gln666ProfsTer47) was identified in two siblings presenting with Schaaf-Yang syndrome, one of whom was diagnosed with ASD; this variant was undetectable in DNA from the blood of either parent, suggesting gonadal mosaicism of this paternally expressed gene (Soden et al., 2014). Fountain et al., 2016 reported a total of 18 newly identified individuals with Schaaf-Yang syndrome from 14 families. Of the seven newly identified cases in Fountain et al., 2016 that were formally evaluated for ASD, four cases were formally diagnosed with ASD (including two paternal cousins with a paternally-inherited frameshift variant and a case with a de novo frameshift variant); an additional six cases presented with autistic behaviors but were not formally evaluated for ASD.

2

Strong Candidate

See all Category 2 Genes

We considered a rigorous statistical comparison between cases and controls, yielding genome-wide statistical significance, with independent replication, to be the strongest possible evidence for a gene. These criteria were relaxed slightly for category 2.

The syndromic category includes mutations that are associated with a substantial degree of increased risk and consistently linked to additional characteristics not required for an ASD diagnosis. If there is independent evidence implicating a gene in idiopathic ASD, it will be listed as "#S" (e.g., 2S, 3S, etc.). If there is no such independent evidence, the gene will be listed simply as "S."

04-01-2017
2S

Initial score established: 2S

Description

A de novo frameshift variant on the paternal allele of the MAGEL2 gene was identified in a male patient with ASD, mild intellectual disability, and a history of Prader-Willi-like phenotypes; this variant was absent in dbSNP, 1000 Genomes, and ESP5000 . A search of the Baylor College of Medicine Whole-Genome Laboratory database identified an additional three subjects with loss-of-function variants on the paternal allele of MAGEL2 (two of which were de novo) who also presented with ASD, intellectual disability, and some or all of the clinical and behavioral features of Prader-Willi syndrome (PMID 24076603). A frameshift variant in MAGEL2 (c.1996dupC;p.Gln666ProfsTer47) was identified in two siblings presenting with Schaaf-Yang syndrome, one of whom was diagnosed with ASD; this variant was undetectable in DNA from the blood of either parent, suggesting gonadal mosaicism of this paternally expressed gene (Soden et al., 2014). Fountain et al., 2016 reported a total of 18 newly identified individuals with Schaaf-Yang syndrome from 14 families. Of the seven newly identified cases in Fountain et al., 2016 that were formally evaluated for ASD, four cases were formally diagnosed with ASD (including two paternal cousins with a paternally-inherited frameshift variant and a case with a de novo frameshift variant); an additional six cases presented with autistic behaviors but were not formally evaluated for ASD.

CNVs associated with MAGEL2(1 CNVs)
15q11.2 74 Deletion-Duplication 108  /  2099
Animal Models associated with MAGEL2(1 Models)
Magel2_1_KO_HT_m+p- Genetic
Submit New Gene

Report an Error