LEPR rs1137101: Understanding This Common Genetic Variant
The rs1137101 variant is a common genetic change located in the LEPR gene, which provides instructions for making the leptin receptor. This variant is frequently studied for its potential associations with satiety signaling, body mass index, and metabolic conditions like type 2 diabetes.
What each genotype means
Baseline leptin receptor profile
This genotype is considered the reference or common form of the LEPR gene variant. Research generally uses this as the baseline for comparison when studying associations with obesity or metabolic traits.
This is a common genotype found globally, though frequencies vary significantly by ancestry.
Slightly altered metabolic risk
This genotype, also known as the Q223R variant, has been studied for its potential association with leptin signaling. Some research suggests a slight increase in the risk of obesity or type 2 diabetes, though results across different populations are inconsistent and often depend on other factors like body mass index.
This heterozygous genotype is frequently observed in many global populations.
Increased metabolic risk profile
Individuals with this genotype may have a higher statistical association with obesity and type 2 diabetes compared to those with the A/A genotype. Because these associations are complex and influenced by lifestyle and environmental factors, you should discuss any concerns regarding metabolic health or weight management with your clinician.
This genotype is common, appearing in a significant portion of the global population.
What is rs1137101?
The rs1137101 variant is a single nucleotide polymorphism (SNP) found within the LEPR gene on chromosome 1. In scientific literature, this variant is often referred to as Q223R, reflecting a change in the protein sequence where the amino acid glutamine (Q) is replaced by arginine (R) at position 223. This specific location sits within the CRH1 domain of the leptin receptor protein. Because this is a common variant, it is present in a large portion of the global population. Researchers track this SNP to understand how subtle variations in protein structure might influence the way the body processes signals related to energy balance and metabolism.
The Role of the LEPR Gene
The LEPR gene encodes the leptin receptor, a protein that plays a critical role in energy homeostasis. Leptin is a hormone produced by fat cells that acts as a signal to the brain, specifically the hypothalamus, to regulate appetite and energy expenditure. When leptin binds to its receptor, it triggers a signaling cascade that helps the body maintain a stable body weight by promoting satiety and increasing energy use. Mutations that cause a complete loss of function in the LEPR gene are rare and are associated with severe, early-onset obesity and hyperphagia. In contrast, common variants like rs1137101 are thought to have much more subtle effects on receptor function, potentially influencing how efficiently these satiety signals are transmitted.
Research and Associations
Scientific research into rs1137101 has produced mixed results, making it a subject of ongoing investigation. Many studies have explored whether this variant contributes to an increased risk of obesity or type 2 diabetes, with some meta-analyses suggesting a modest association with these metabolic traits. However, other studies have found no significant link, highlighting the complexity of genetic influences on body weight. It is important to note that obesity and metabolic health are polygenic, meaning they are influenced by hundreds of genetic variants, environmental factors, and lifestyle choices. Because the evidence for rs1137101 is considered moderate and sometimes inconsistent across different ethnic populations, it is not used as a standalone predictor for health outcomes.
What You Can Do With This Information
Understanding your genetic variants can be an interesting way to learn about your biological makeup, but it is essential to maintain perspective. Because the association between rs1137101 and health outcomes is not definitive, this information should not be used to diagnose conditions or predict your future health. Genetic markers are only one small piece of a much larger puzzle that includes diet, physical activity, and overall medical history. If you have concerns about your weight, metabolic health, or family history of diabetes, the most effective approach is to consult with a healthcare professional. They can provide personalized guidance based on clinical assessments rather than relying on individual genetic variants, which are rarely sufficient to determine health risks on their own.
How common is this variant?
The rs1137101 variant is very common globally, with a minor allele frequency (MAF) of approximately 40% to 46% depending on the population studied.
Frequently asked questions
Does having the G allele mean I will become obese?
No. Genetic variants like rs1137101 are not deterministic. Obesity is a complex condition influenced by many genes, environment, and lifestyle, and this variant only has a very small, debated impact on metabolic risk.
Is rs1137101 a mutation that causes disease?
No, it is a common genetic polymorphism. While rare, severe mutations in the LEPR gene can cause medical conditions, rs1137101 is a normal variation found in a large percentage of the healthy population.
Should I change my diet based on this result?
You should not make dietary changes based on a single SNP result. Always consult with a registered dietitian or your primary care physician to create a nutrition plan that is safe and appropriate for your specific health needs.
Where can I find more information on LEPR?
You can visit resources like MedlinePlus Genetics or the NCBI Gene database for authoritative, evidence-based information on the function of the LEPR gene and its role in human health.
Sources & further reading
Educational information only, last refreshed 10/1/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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A missense change (p.Lys656Asn) in the extracellular domain of the leptin receptor linked to differential receptor signaling efficiency and adiposity traits in epidemiological studies.
This SNP is associated with leptin receptor function and regulation of appetite.
Common missense variant (Lys656Asn) in the leptin receptor associated with altered body mass index, insulin resistance, and metabolic traits.