rs2073833: Understanding This Genetic Variant and Medication Response
The rs2073833 variant is a single nucleotide polymorphism located in an intergenic region of the human genome. It has been investigated for potential associations with individual responses to methylphenidate, a medication commonly used to treat ADHD.
What each genotype means
Potential methylphenidate treatment resistance
This genotype has been associated in some studies with a higher likelihood of treatment failure when using methylphenidate for ADHD. Because the evidence for this association is limited and not definitive, you should not make changes to your medication based on this result alone. Please discuss your treatment response and any concerns about dosing with your clinician or pharmacist.
The frequency of this genotype varies significantly by ancestry and is not universally documented in large-scale public databases.
Uncertain methylphenidate response
There is currently insufficient evidence to determine how carrying one copy of the T allele affects your response to methylphenidate compared to the C/C genotype. Research into this variant is ongoing, and clinical outcomes remain highly variable between individuals. Please consult with your healthcare provider to evaluate your current treatment plan and medication efficacy.
The frequency of this heterozygous genotype is not specifically recorded in standard pharmacogenomic reference populations.
Uncertain methylphenidate response
There is no established evidence linking the T/T genotype to specific outcomes in methylphenidate therapy. Current research has primarily focused on the potential risks associated with the C allele, leaving the clinical significance of the T/T genotype unclear. Always discuss your medication management and any observed side effects or lack of efficacy with your prescribing physician.
The frequency of this genotype is not specifically recorded in standard pharmacogenomic reference populations.
What is rs2073833?
The rs2073833 variant is a specific location in your DNA where a single nucleotide change can occur. In genetics, a single nucleotide polymorphism, or SNP, represents a variation at a single position in a DNA sequence among individuals. This particular SNP is classified as intergenic, meaning it is situated in the vast stretches of DNA that lie between protein-coding genes. While intergenic regions do not provide the direct instructions for building proteins, they often contain regulatory elements that help control when and how genes are turned on or off in different tissues. Because rs2073833 does not sit within a known gene, researchers look at its proximity to nearby genomic features to hypothesize how it might influence biological processes. Understanding these non-coding variants is a major focus of modern genomics, as they may play subtle but important roles in how our bodies function and respond to external stimuli, including pharmaceutical treatments.
Research and Medication Response
The primary interest in rs2073833 stems from its potential role in pharmacogenomics, the study of how genes affect a person's response to drugs. Specifically, some research has explored whether this variant influences the efficacy of methylphenidate, a stimulant medication frequently prescribed for Attention Deficit Hyperactivity Disorder (ADHD). The hypothesis is that certain genetic profiles might correlate with better or worse therapeutic outcomes when using this medication. However, it is important to note that the evidence linking rs2073833 to methylphenidate response is currently limited. Genome-wide association studies, which scan the entire genome to find links between variants and traits, have not consistently identified this SNP as a major driver of drug response. While some preliminary studies have suggested associations, these findings often require replication in larger, more diverse cohorts to confirm their clinical relevance. Consequently, the scientific community views these associations as preliminary rather than definitive markers for clinical decision-making.
Interpreting Genetic Information
When you encounter information about genetic variants like rs2073833, it is essential to maintain a balanced perspective. Genetic testing can provide fascinating insights into your biological makeup, but it is rarely the sole determinant of how you will respond to a medication. Factors such as age, overall health, lifestyle, and the specific nature of the condition being treated play significant roles in therapeutic outcomes. Because the evidence for rs2073833 is not yet robust enough to guide standard medical practice, this information should not be used to make changes to your healthcare regimen. If you are curious about how your genetics might influence your response to a specific treatment, the best course of action is to consult with your physician or a qualified pharmacist. They can help you interpret your results in the context of your full medical history and provide guidance based on established clinical guidelines rather than preliminary research findings.
How common is this variant?
There is no widely recorded population frequency data for the rs2073833 variant in major public databases, indicating that its prevalence across different ancestral groups remains largely uncharacterized.
Frequently asked questions
Can I use rs2073833 to predict if ADHD medication will work for me?
No. The current scientific evidence for rs2073833 is limited and not sufficient to predict individual responses to ADHD medication. You should always discuss treatment efficacy and side effects directly with your healthcare provider.
Is rs2073833 a gene?
No, rs2073833 is not a gene. It is an intergenic variant, meaning it is located in the DNA sequence between genes.
Where can I find more information about this SNP?
You can search for rs2073833 in the NCBI dbSNP database or the GWAS Catalog to see the latest research and study associations. These resources provide the most up-to-date scientific data on known genetic variants.
Should I change my medication based on my genotype?
Absolutely not. Never change your medication dosage or stop taking a prescribed treatment based on genetic test results without consulting your doctor or pharmacist first.
Sources & further reading
Educational information only, last refreshed 9/23/2026. Not medical advice — these associations describe population statistics, not individual predictions.
Curious what your genotype is for rs2073833?
Upload a raw DNA file from 23andMe, AncestryDNA, MyHeritage, or FamilyTreeDNA and see this variant — plus thousands more — interpreted in your full report.
Get my report — $29Related variants
Functional polymorphism (c.235A>G, p.Ile79Val) in the mismatch repair gene MSH3 associated with differential sensitivity and clinical response to fluoropyrimidine- and platinum-based regimens.
Coding variant Ala499Val (c.1496C>T) in XPC that impacts DNA repair efficiency and influences sensitivity and survival outcomes following DNA-damaging chemotherapeutics.
Extracellular domain missense variant Thr227Met in FLT3 receptor tyrosine kinase associated with altered responsiveness to tyrosine kinase inhibitor therapy.
Missense variant Lys939Gln (c.2815A>C) in the nucleotide excision repair gene XPC altering DNA repair capacity and modulating platinum-based chemotherapy response and toxicity.
This variant is located in the promoter region of the VKORC1 gene and is a primary genetic factor influencing individual sensitivity to warfarin dosing.
Intronic regulatory variant in VKORC1 associated with warfarin maintenance dose requirements and anticoagulant sensitivity.