HSA | FSA CARDS ARE NOW ACCEPTED

Last reviewed: May 12, 2026 Last updated: May 12, 2026

Written by: Jay Hastings , CEO of PlexusDx

Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations. He has more than 20 years of experience across healthcare innovation, genomics, laboratory operations, healthcare investing, and strategic finance. His work has included scaling healthcare startups, leading CLIA lab integrations, and helping expand consumer access to precision health tools.

Medically reviewed by: Jayden Lee, PharmD, EMBA

Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes. Dr. Lee has more than 10 years of professional experience in clinical pharmacy, academia, and research.

Understanding Your HMGA2 Result and Peanut Sensitivity

Peanut allergy occurs when the immune system mistakenly treats peanut proteins as harmful, producing reactions that range from mild symptoms to severe, life-threatening anaphylaxis. The HMGA2 gene plays a role in immune system regulation, and certain variations in this gene can influence how strongly the immune system reacts to peanuts. Your PlexusDx genetic results for the HMGA2 variant rs10878354 indicate one of three possible genotypes: GG, AG, or AA. Each genotype reflects a different level of genetic predisposition to increased immune reactivity to peanut proteins.

How to read this result

  • Genotype = the two-letter code (GG, AG, AA) for the rs10878354 position.
  • Effect allele = the G allele for rs10878354. More copies of G are associated with higher immune reactivity in this context.
  • This result shows predisposition only. It does not diagnose a peanut allergy.

Genetic Interpretations

2 effect alleles (GG) — Higher potential for peanut sensitivity

If you have the GG genotype, you carry two copies of the effect allele. This genotype is associated with a higher tendency for immune reactivity related to peanut proteins. The HMGA2 gene helps regulate immune system function, and your variant may make your immune system more likely to mount a strong response when exposed to peanuts.

Important points:

  • This indicates increased predisposition, not a confirmed allergy.
  • If you have experienced symptoms after peanut exposure, seek clinical evaluation and testing.
  • Avoiding peanuts and having an emergency plan are recommended when advised by a clinician.
1 effect allele (AG) — Moderate potential for peanut sensitivity

If you have the AG genotype, you carry one copy of the effect allele and one non-effect allele. This suggests an intermediate predisposition: your immune system may be somewhat more prone to react to peanut proteins compared with people who have no effect alleles, but less so than those with two effect alleles.

Important points:

  • This is not a diagnosis. Many people with AG do not develop clinical peanut allergy.
  • Be attentive to symptoms after exposure and discuss testing with your healthcare provider if you suspect sensitivity.
  • Consider precautionary measures based on personal history and clinician guidance.
0 effect alleles (AA) — Typical genetic risk

If you have the AA genotype, you carry two copies of the non-effect allele. At this rs10878354 position in HMGA2, your genetic profile does not contribute additional risk for heightened immune reactivity to peanuts. This suggests a typical immune response tendency at this specific genetic location.

Important points:

  • Having AA does not rule out peanut allergy. Other genes and environmental factors can still influence risk.
  • Maintain usual caution if you have symptoms or a family history of allergy and consult a clinician for evaluation.

What This Means for Health and Safety

Genetic predisposition is one piece of the allergy picture. Environmental exposures, timing of peanut introduction in infancy, skin barrier health, family history, and other genes also influence whether someone develops a clinical peanut allergy. If you have symptoms such as hives, swelling, difficulty breathing, vomiting, or fainting after peanut exposure, seek immediate medical attention. For long-term safety, people with diagnosed peanut allergy are typically advised to carry emergency medication such as epinephrine auto-injectors and to have a written emergency action plan.

Practical Recommendations

Avoidance and Emergency Preparedness

  • If you have a diagnosed peanut allergy, avoid peanuts and peanut-containing products strictly.
  • If your clinician recommends carrying epinephrine, always have it available and know how to use it.
  • Read food labels and ask about ingredients when eating out. Cross-contact is a common source of accidental exposure.

Testing and Clinical Follow-up

  • Genetic results do not replace clinical testing. Consider discussion with an allergist or primary care provider if you have suspicious symptoms or a family history.
  • Common clinical tests include skin prick testing, serum-specific IgE testing, and supervised oral food challenges when appropriate.

Diet and Nutrition to Support Immune Health

Although diet will not prevent a true IgE-mediated peanut allergy, supporting overall immune and gut health can be beneficial for general allergy risk management and resilience.

  • Adopt a balanced, anti-inflammatory diet rich in whole foods: vegetables, fruits, legumes (unless allergic), whole grains, nuts and seeds if tolerated, lean proteins, and healthy fats.
  • Include omega-3 rich foods such as fatty fish or consider an omega-3 supplement if diet is low in these fats.
  • Ensure adequate vitamin D through safe sun exposure, diet, or supplementation after checking levels with your healthcare provider.
  • Support gut microbiome health with fermented foods and, when advised by a clinician, probiotics that are appropriate for your age and health status.

Supplements and Considerations

  • Vitamin D: appropriate for immune support when deficient; check blood levels first.
  • Omega-3s: may support lower inflammation; discuss dosage with your clinician.
  • Probiotics: some strains can support gut health; choose clinically studied strains and consult your healthcare provider.
  • Do not use supplements as a substitute for medical treatment or emergency medication.

Lifestyle Habits That Help

  • Sleep: aim for regular, sufficient sleep to support immune regulation.
  • Stress management: chronic stress can alter immune responses. Try stress-reduction techniques such as mindfulness, breathing exercises, and regular physical activity.
  • Regular, moderate exercise: supports immune function and overall health.

When to Contact a Healthcare Provider

  • If you have experienced any allergic symptoms after peanut exposure.
  • If you want testing to confirm or rule out peanut allergy.
  • If you are considering starting or changing supplements, especially if pregnant, breastfeeding, taking medications, or managing chronic conditions.

Important Disclaimer

PlexusDx provides educational information about genetic predispositions only. This information is not medical advice and does not diagnose, treat, or predict clinical outcomes. Always consult your healthcare provider or an allergist for diagnosis, testing, personalized recommendations, and before starting or stopping medications or supplements.

If this genetic variant is present in your PlexusDx results, the following tests and reports are commonly used to explore it further:

🧬 Genetic Tests:

🧪 Blood Tests:

📄 Genetic Report:

Frequently Asked Questions About Peanut Allergy and HMGA2 rs10878354

What does the HMGA2 rs10878354 result mean for peanut sensitivity?

Your HMGA2 variant rs10878354 reflects a genetic predisposition to how strongly your immune system may react to peanut proteins. It does not diagnose a peanut allergy. Your genotype (GG, AG, or AA) indicates higher, moderate, or typical genetic risk for increased immune reactivity in this specific context.

How do the HMGA2 rs10878354 genotypes (GG, AG, AA) differ in peanut allergy risk?

GG (two effect alleles) suggests higher potential for peanut sensitivity, AG (one effect allele) suggests moderate potential, and AA (zero effect alleles) suggests typical genetic risk at this rs10878354 position. These results only indicate predisposition, and clinical peanut allergy depends on multiple factors beyond this single gene variation.

What should I do if I suspect peanut sensitivity based on my HMGA2 genetic result?

Follow clinical safety first: if you’ve had symptoms after peanut exposure (hives, swelling, breathing trouble, vomiting, or fainting), seek immediate medical attention. Talk with an allergist or primary care provider for testing such as skin prick testing, serum-specific IgE testing, or supervised oral food challenges when appropriate. If peanut allergy is diagnosed, clinicians typically recommend strict avoidance and an emergency action plan (often including epinephrine auto-injectors).

What tests can help me learn more about Peanut Allergy and HMGA2 rs10878354?

The Food Sensitivity & Allergy Genetic Test analyzes over 240 genetic insights related to immune response, inflammation, and dietary tolerance. The Allergies and Food Sensitivities Genetic Report translates your results into personalized, actionable guidance. Your healthcare provider can also recommend targeted blood tests based on your specific pathway results and health history to complement your genetic insights with current biomarker data.

Medical and Editorial Standards

Medical review process: This article was reviewed for medical accuracy, scientific clarity, evidence alignment, and appropriate discussion of genetics, medications, supplements, biomarkers, and health-related claims.

Sources and evidence: PlexusDx educational content is developed using peer-reviewed research, clinical literature, reputable medical references, and, where applicable, public health or regulatory guidance. References are included at the end of the article when scientific, medical, or health-related claims are discussed.

Commercial transparency: PlexusDx offers genetic testing, blood biomarker testing, personalized supplement recommendations, and related precision wellness services. Product mentions are intended to help readers understand available options and should not be interpreted as medical advice.

Important disclaimer: PlexusDx educational content is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about medications, supplements, genetic testing, lab testing, or health-related care.