MTHFR Gene Polymorphisms: A Single Gene with Wide-Ranging Clinical Implications-A Review.
This genetics review gives background on MTHFR variants but offers zero ABA tactics.
01Research in Context
What this study did
AFerguson et al. (2025) wrote a narrative review. They pulled together studies on MTHFR gene changes and health issues.
The paper lists cancers, heart disease, and autism as conditions linked to these gene changes. It does not run new experiments.
What they found
The review says one gene, MTHFR, shows up in many medical papers. It does not give ABA data or behavior graphs.
No skill gains, no reduction in problem behavior, and no teaching protocols are reported.
How this fits with other research
Pu et al. (2013) meta-analysis is folded into the review. That study found the C677T change raises autism odds about 1.4 times.
Ezedinma et al. (2025) extends the idea. They show a 4.5-Hz EEG mark spots the same gene change in kids with ASD. This gives a cheap, non-invasive screener.
Whitehouse et al. (2014) seems to clash at first. Moms who took prenatal vitamins had kids with fewer autistic traits, even though MTHFR can hinder folate use. The studies differ in timing: vitamins act early in pregnancy, while gene risk is lifelong. The papers sit together once you see one talks prevention, the other talks risk.
Why it matters
Right now, this review offers background, not a treatment roadmap. If you assess ASD, know that MTHFR changes may ride along with the diagnosis. Pair the new EEG hint from Uchenna et al. with your standard intake. You still write behavior plans based on direct observation, not on gene printouts, but the data may help explain medical histories to parents or physicians.
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02At a glance
03Original abstract
The enzyme 5,10-methylenetetrahydrofolate reductase (MTHFR) catalyzes the conversion of 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate, a process essential for the methylation of homocysteine to methionine. Polymorphisms in the MTHFR gene can reduce enzyme activity, disrupting the folate cycle and leading to hyperhomocysteinemia. The two most common polymorphisms associated with this gene are 667C>T (rs1801133) and 1298A>C (rs1801131). <b>Background:</b> This review provides a comprehensive summary of the current knowledge regarding MTHFR polymorphisms, with a particular focus on their potential impact on disease susceptibility. We hope this review will serve as a valuable resource for understanding the significance of MTHFR polymorphisms and their complex relationships with various diseases. <b>Methods:</b> For this review, we prioritized recent evidence, focusing on reviews and meta-analyses published between 2015 and 2025, sourced from PubMed and Google Scholar. <b>Results:</b> We explore the connection between these polymorphisms and a broad spectrum of medical conditions, including cardiovascular diseases and oxidative stress pathology; neurological and psychiatric disorders, such as Autism Spectrum Disorder, Alzheimer's disease, Schizophrenia, and Major Depressive Disorder; fertility, pregnancy, and neonatal complications, including recurrent pregnancy loss, pre-eclampsia, preterm birth, low birth weight, and neural tube defects; metabolic disorders, such as diabetes mellitus, inflammatory bowel disease, and non-alcoholic fatty liver disease; and oncological conditions, including breast, prostate, and ovarian cancers; as well as leukemia, and autoimmune diseases, particularly rheumatoid arthritis. <b>Conclusions:</b> While some diseases have a well-established association with MTHFR polymorphisms, others require further investigation. Our analysis highlights the crucial role of environmental factors, such as ethnic background and dietary folate intake, in influencing study outcomes.
, 2025 · doi:10.3390/genes16040441