Human Gene Module / Chromosome 7 / BAIAP2L1

BAIAP2L1BAR/IMD domain containing adaptor protein 2 like 1

SFARI Gene Score
3
Suggestive Evidence Criteria 3.1
Autism Reports / Total Reports
6 / 6
Rare Variants / Common Variants
9 / 0
Aliases
-
Associated Syndromes
-
Chromosome Band
7q21.3-q22.1
Associated Disorders
-
Relevance to Autism

Rare de novo variants in the BAIAP2L1 gene have been identified in ASD probands, including a de novo missense variant (p.Ala481Val) in a proband from the Simons Simplex Collection (Iossifov et al., 2014; Sanders et al., 2015; Yuen et al., 2017; Turner et al., 2017; Satterstrom et al., 2020). Functional assessment of the ASD-associated p.Ala481Val missense variant in Drosophila using an overexpression-based strategy in Macrogliese et al., 2022 demonstrated that flies overexpressing BAIAP2L1-p.Ala481Val exhibited a smaller, more crumpled wing phenotype compared to the reference allele, consistent with a gain-of-function effect.

Molecular Function

This gene encodes a member of the IMD (IRSp53/MIM homology domain) family. Members of this family can be subdivided in two groups, the IRSp53-like and MIM-like, based on the presence or absence of the SH3 (Src homology 3) domain. The protein encoded by this gene contains a conserved IMD, also known as F-actin bundling domain, at the N-terminus, and a canonical SH3 domain near the C-terminus, so it belongs to the IRSp53-like group. This protein is the substrate for insulin receptor tyrosine kinase and binds to the small GTPase Rac. It is involved in signal transduction pathways that link deformation of the plasma membrane and remodeling of the actin cytoskeleton. It also promotes actin assembly and membrane protrusions when overexpressed in mammalian cells, and is essential to the formation of a potent actin assembly complex during EHEC (Enterohemorrhagic Escherichia coli) pedestal formation.

External Links
Gene CardOpen Targets PlatformgnomAD browserPubMed
Human
Entrez GeneOMIMUniProtHumanBaseVariCarta
SFARI Genomic Platforms
GPF browser SFARI genome browser
Reports related to BAIAP2L1 (6 Reports)
# Type Title Author, Year Autism Report Associated Disorders
1 Primary The contribution of de novo coding mutations to autism spectrum disorder Iossifov I et al. (2014) Yes -
2 Support Insights into Autism Spectrum Disorder Genomic Architecture and Biology from 71 Risk Loci Sanders SJ , et al. (2015) Yes -
3 Support Whole genome sequencing resource identifies 18 new candidate genes for autism spectrum disorder C Yuen RK et al. (2017) Yes -
4 Support Genomic Patterns of De Novo Mutation in Simplex Autism Turner TN et al. (2017) Yes -
5 Support Large-Scale Exome Sequencing Study Implicates Both Developmental and Functional Changes in the Neurobiology of Autism Satterstrom FK et al. (2020) Yes -
6 Recent Recommendation - Marcogliese PC et al. (2022) Yes -
Rare Variants   (9)
Status Allele Change Residue Change Variant Type Inheritance Pattern Parental Transmission Family Type PubMed ID Author, Year
c.52-9182A>C - intron_variant De novo - Simplex 28263302 C Yuen RK et al. (2017)
c.215-16593G>T - intron_variant De novo - Simplex 28263302 C Yuen RK et al. (2017)
c.*211A>G - 3_prime_UTR_variant De novo - Simplex 28965761 Turner TN et al. (2017)
c.1423-1873G>A - intron_variant De novo - Multiplex 28263302 C Yuen RK et al. (2017)
c.214+14205G>T - intron_variant De novo - Multiplex 28263302 C Yuen RK et al. (2017)
c.487-10_487-9insATTA - intron_variant De novo - - 26402605 Sanders SJ , et al. (2015)
c.*805G>A - 3_prime_UTR_variant De novo - Simplex 31981491 Satterstrom FK et al. (2020)
c.640-34_640-32del - intron_variant De novo - Multiplex 28263302 C Yuen RK et al. (2017)
c.1442C>T p.Ala481Val missense_variant De novo - Simplex 25363768 Iossifov I et al. (2014)
Common Variants  

No common variants reported.

SFARI Gene score
3

Suggestive Evidence

Score Delta: Score remained at 3

criteria met
See SFARI Gene'scoring criteria
3

Suggestive Evidence

See all Category 3 Genes

The literature is replete with relatively small studies of candidate genes, using either common or rare variant approaches, which do not reach the criteria set out for categories 1 and 2. Genes that had two such lines of supporting evidence were placed in category 3, and those with one line of evidence were placed in category 4. Some additional lines of "accessory evidence" (indicated as "acc" in the score cards) could also boost a gene from category 4 to 3.

4/1/2022
icon
3

Increased from to 3

Krishnan Probability Score

Score 0.33366400667054

Ranking 24533/25841 scored genes


[Show Scoring Methodology]
Krishnan and colleagues generated probability scores genome-wide by using a machine learning approach on a human brain-specific gene network. The method was first presented in Nat Neurosci 19, 1454-1462 (2016), and scores for more than 25,000 RefSeq genes can be accessed in column G of supplementary table 3 (see: http://www.nature.com/neuro/journal/v19/n11/extref/nn.4353-S5.xlsx). A searchable browser, with the ability to view networks of associated ASD risk genes, can be found at asd.princeton.edu.
Original Source
ExAC Score

Score 0.042773725631072

Ranking 8719/18225 scored genes


[Show Scoring Methodology]
The Exome Aggregation Consortium (ExAC) is a summary database of 60,706 exomes that has been widely used to estimate 'constraint' on mutation for individual genes. It was introduced by Lek et al. Nature 536, 285-291 (2016), and the ExAC browser can be found at exac.broadinstitute.org. The pLI score was developed as measure of intolerance to loss-of- function mutation. A pLI > 0.9 is generally viewed as highly constrained, and thus any loss-of- function mutations in autism in such a gene would be more likely to confer risk. For a full list of pLI scores see: ftp://ftp.broadinstitute.org/pub/ExAC_release/release0.3.1/functional_gene_constraint/fordist_cle aned_exac_nonTCGA_z_pli_rec_null_data.txt
Original Source
Sanders TADA Score

Score 0.85290680244497

Ranking 3568/18665 scored genes


[Show Scoring Methodology]
The TADA score ('Transmission and De novo Association') was introduced by He et al. PLoS Genet 9(8):e1003671 (2013), and is a statistic that integrates evidence from both de novo and transmitted mutations. It forms the basis for the claim of 65 individual genes being strongly associated with autism risk at a false discovery rate of 0.1 (Sanders et al. Neuron 87, 1215-1233 (2015)). The calculated TADA score for 18,665 RefSeq genes can be found in column P of Supplementary Table 6 in the Sanders et al. paper (the column headed 'tadaFdrAscSscExomeSscAgpSmallDel'), which represents a combined analysis of exome data and small de novo deletions (see www.cell.com/cms/attachment/2038545319/2052606711/mmc7.xlsx).
Original Source
Zhang D Score

Score -0.1843458709359

Ranking 15066/20870 scored genes


[Show Scoring Methodology]
The DAMAGES score (disease-associated mutation analysis using gene expression signatures), or D score, was developed to combine evidence from de novo loss-of- function mutation with evidence from cell-type- specific gene expression in the mouse brain (specifically translational profiles of 24 specific mouse CNS cell types isolated from 6 different brain regions). Genes with positive D scores are more likely to be associated with autism risk, with higher-confidence genes having higher D scores. This statistic was first presented by Zhang & Shen (Hum Mutat 38, 204- 215 (2017), and D scores for more than 20,000 RefSeq genes can be found in column M in supplementary table 2 from that paper.
Original Source
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