Human Gene Module / Chromosome 1 / TFB2M

TFB2Mtranscription factor B2, mitochondrial

SFARI Gene Score
3
Suggestive Evidence Criteria 3.1
Autism Reports / Total Reports
1 / 1
Rare Variants / Common Variants
1 / 0
Aliases
TFB2M, Hkp1,  mtTFB2
Associated Syndromes
-
Chromosome Band
1q44
Associated Disorders
DD/NDD, ID
Relevance to Autism

A homozygous missense variant in the TFB2M gene (c.790C>T;p.His264Tyr) was identified in two Korean brothers with autism spectrum disorder; functional analysis of this variant demonstrated significantly increased transcription of mitochondrial genes and increased mitochondrial function in patient fibroblasts and transfected primary-cultured fibroblasts (Park et al., 2018).

Molecular Function

This gene encodes a component of the mitochondrial transcription initiation complex, composed at least of TFB2M, TFAM and POLRMT, that is required for basal transcription of mitochondrial DNA.

SFARI Genomic Platforms
Reports related to TFB2M (1 Reports)
# Type Title Author, Year Autism Report Associated Disorders
1 Primary Identification of a rare homozygous c.790C>T variation in the TFB2M gene in Korean patients with autism spectrum disorder Park CB et al. (2018) Yes DD, ID
Rare Variants   (1)
Status Allele Change Residue Change Variant Type Inheritance Pattern Parental Transmission Family Type PubMed ID Author, Year
c.790C>T p.His264Tyr missense_variant Familial Both parents Multiplex 30414672 Park CB et al. (2018)
Common Variants  

No common variants reported.

SFARI Gene score
3

Suggestive Evidence

Score Delta: Score remained at 3

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
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3

Increased from to 3

Krishnan Probability Score

Score 0.3284572638415

Ranking 25117/25841 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.
ExAC Score

Score 9.6189952422211E-5

Ranking 13121/18225 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
Sanders TADA Score

Score 0.92382643870522

Ranking 9859/18665 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).
Zhang D Score

Score 0.068688201412094

Ranking 6780/20870 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.
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