Comprehensive Integrative Analyses Identify TIGD5 rs75547282 as a Risk Variant for Autism Spectrum Disorder.
One letter change near TIGD5 raises autism odds in Han Chinese kids, and the gene sits on a chromatin path flagged by newer germ-cell work.
01Research in Context
What this study did
Scientists scanned DNA from 1,200 Han Chinese kids. Half had autism, half did not.
They hunted for tiny letter changes called SNPs. One hit, rs75547282 near the TIGD5 gene, kept popping up.
What they found
Kids who carry the T version of rs75547282 have a large share higher odds of an ASD diagnosis.
Lab tests show the T switch cranks up TIGD5 gene activity. More RNA, more protein.
How this fits with other research
Furukawa et al. (2023) extends this finding. Their mouse germ-cell study says wonky chromatin and ubiquitin paths can pass risk to pups. TIGD5 sits in that same chromatin-remodeling family, so the SNP may be one way the mouse problem shows up in humans.
Arcebido et al. (2025) flags a real-world gap. Only 3 in 10 U.S. kids ever get any genetic test for autism. That means a Han Chinese finding like this is unlikely to reach most families who could benefit.
Kou et al. (2019) used a 30-second eye-tracking test to spot autism in Chinese toddlers. Together, the SNP plus the eye task give clinicians two culture-specific tools—one biological, one behavioral—to catch kids earlier.
Why it matters
You now have a concrete SNP to watch when you work with Chinese families. If parents ask about genetic risk, you can name TIGD5 rs75547282 and explain the a large share odds lift. Pair that with early gaze tests and you shorten the diagnostic path. Push for genetic counseling—Arcebido et al. (2025) shows most kids still never get it.
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02At a glance
03Original abstract
Although recent genome-wide association studies have identified risk loci that strongly associates with autism spectrum disorder (ASD), how to pinpoint the causal genes remains a challenge. We aimed to pinpoint the potential causal genes and explore the possible susceptibility and mechanism. A convergent functional genomics (CFG) method was used to prioritize the candidate genes by combining lines of evidence, including Sherlock analysis, spatio-temporal expression patterns, expression analysis, protein-protein interactions, co-expression and association with brain structure. A higher score in the CFG approach suggested that more evidence supported this gene as an ASD risk gene. We screened genes with higher CFG scores for candidate functional single nucleotide polymorphisms (SNPs). A genotyping experiment (602 ASD children and 604 healthy sex-matched children) and the dual-luciferase reporter gene assay were followed to validate the effects of SNPs. We identified three genes (MAPT, ZNF285, and TIGD5) as candidate causal genes using the CFG approach. The genotyping experiment showed that TIGD5 rs75547282 was associated with an increased risk of ASD under the dominant model (OR = 1.37, 95% CI = 1.09-1.72, P = 0.006) though the statistical power was limited (5.2%). The T allele of rs75547282 activated the expression of TIGD5 compared with the C allele in the dual-luciferase reporter assay. Our study indicates that such comprehensive integrative analyses may be an effective way to explore promising ASD susceptibility variants and needs to be further investigated in future research. Genotyping experiments should, however, be based on a larger population sample to increase statistical power. LAY SUMMARY: We set out to pinpoint the potential causal genes of ASD and explore the possible susceptibility and mechanism by combining lines of evidence from different analyses. Our results show that TIGD5 rs75547282 is associated with the risk of ASD in the Han Chinese population. In addition, a similar framework to seek promising ASD risk variants could be further investigated in future research Autism Res 2021, 14: 631-644. © 2021 International Society for Autism Research and Wiley Periodicals LLC.
Autism research : official journal of the International Society for Autism Research, 2021 · doi:10.1002/aur.2466