TFB2Mtranscription factor B2, mitochondrial
Autism Reports / Total Reports
1 / 1Rare Variants / Common Variants
1 / 0Aliases
TFB2M, Hkp1, mtTFB2Associated Syndromes
-Chromosome Band
1q44Associated Disorders
DD/NDD, IDRelevance 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.
External Links
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
Suggestive Evidence


Score Delta: Score remained at 3
criteria met
See SFARI Gene'scoring criteriaThe 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

Increased from to 3
Krishnan Probability Score
Score 0.3284572638415
Ranking 25117/25841 scored genes
[Show Scoring Methodology]
ExAC Score
Score 9.6189952422211E-5
Ranking 13121/18225 scored genes
[Show Scoring Methodology]
Sanders TADA Score
Score 0.92382643870522
Ranking 9859/18665 scored genes
[Show Scoring Methodology]
Zhang D Score
Score 0.068688201412094
Ranking 6780/20870 scored genes
[Show Scoring Methodology]