Intellectual disability
Gene: AP1S2

AP1S2 (adaptor related protein complex 1 sigma 2 subunit)
EnsemblGeneIds (GRCh38): ENSG00000182287
EnsemblGeneIds (GRCh37): ENSG00000182287
OMIM: 300629, Gene2Phenotype
AP1S2 is in 14 panels

4 reviews

Arina Puzriakova (Genomics England Curator)

The mode of inheritance of this gene has been updated to 'X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)' following NHS Genomic Medicine Service approval.
Created: 30 Jan 2023, 5:50 p.m. | Last Modified: 30 Jan 2023, 5:50 p.m.

Panel Version: 4.53

Comment on mode of inheritance: Review of literature did not reveal any confirmed affected females. Female carriers of AP1S2 variants are phenotypically normal and have mostly shown random X-inactivation. Huo et al., 2019 (PMID: 30714330) state that they identified a female patient (I-1) but this individual was not available for genetic testing and so it is unclear whether they harboured a variant on a one or both alleles.

As it is not known definitively whether females require a variant on each allele of this gene in order to be affected, the MOI should be set to the default XL (i.e. monoallelic in females may cause disease).
Created: 18 Oct 2021, 11:55 a.m. | Last Modified: 12 Oct 2022, 2:52 p.m.

Panel Version: 3.1744

Created: 18 Oct 2021, 11:55 a.m.
Last Modified: 12 Oct 2022, 2:52 p.m.
Panel version: 4.53

Caroline Wright (Sanger)

Green List (high evidence)

Mode of inheritance
X-LINKED: hemizygous mutation in males, biallelic mutations in females

Phenotypes
MENTAL RETARDATION X-LINKED TYPE 59 (MRX59)

Publications

Created: 5 Nov 2017, 2:42 a.m.

Panel version: 0

BRIDGE consortium (NIHRBR-RD)

Green List (high evidence)

This is a pertinent gene from the NIHR BioResource - Rare Diseases Study (NIHRBR-RD) BRIDGE Study : SPEED (Specialist Pathology: Evaluating Exomes in Diagnostics) which covers epilepsies, movement and microcephaly disorders, this gene is on the SPEED_NEURO_20170705 gene list. Evidences used for SPEED NEURO gene list: in_ddg2p_20141118_conf;in_ddg2p_20141118_conf;in_ddg2p_201507;in_ddg2p_201507_conf;in_ddg2p_2_4_2017;in_ddg2p_2_4_2017_conf;in_gilissen_2014_known . Main mutation mechanism : Loss of function
Created: 27 Jul 2017, 5:04 p.m.

Evidences key, gene present in following gene lists and main mutation mechanism : ddg2p_20141118; ddg2p_20141118_conf; ddg2p_201507; ddg2p_201507_conf; find_uk10k; gilissen_2014_known; sfari_20150206; Nijmegen_ID_diagnostic; Nijmegen_ID_candidates; gonzalez_mantilla_2016; GEL_ID_green_20160217; neuro_20160418_strict; Loss of function. This is a pertinent gene from the BRIDGE Study : SPEED (Specialist Pathology: Evaluating Exomes in Diagnostics) which covers epilepsies, movement and microcephaly disorders, this gene comes from the SPEED_NEURO_v3.0_20170404 gene list. The following experts from the BRIDGE consortium NIHRBR-RD contributed to this panel: - Professor F. Lucy Raymond, Cambridge Institute for Medical Research, University of Cambridge - Manju Kurian, Paediatric neurologist, Great Ormond Street Hosptial - Keren Carss, NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust - Alba Sanchis-Juan, NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust - Marie Erwood NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust - Louise Daugherty, NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust
Created: 19 Jul 2017, 11:59 a.m.

Mode of inheritance
X-LINKED: hemizygous mutation in males, biallelic mutations in females

Publications

Created: 2 Aug 2017, 2:23 p.m.

Panel version: 1.354

Lu Raymond (university of cambridge )

Green List (high evidence)

Created: 23 Feb 2016, 10:56 a.m.

Panel version: 0.306

Details

Mode of Inheritance

X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)

Sources

NHS GMS
Victorian Clinical Genetics Services
Expert Review Green
Radboud University Medical Center, Nijmegen
Emory Genetics Laboratory

Phenotypes

Pettigrew syndrome, OMIM:304340

OMIM

300629

Clinvar variants

Variants in AP1S2

Penetrance

Complete

Publications

Panels with this gene