GNRHR rs104894466: What Your Genotype Means
The rs104894466 variant is a specific genetic change located within the GNRHR gene. It is recognized in scientific literature as a recessive pathogenic missense variant associated with normosmic idiopathic hypogonadotropic hypogonadism and delayed puberty.
What each genotype means
Typical GNRHR function
This genotype represents the most common sequence found in the GNRHR gene. It is associated with typical receptor function for gonadotropin-releasing hormone, which is essential for normal reproductive development.
This is the predominant genotype found in the vast majority of the global population.
Carrier of GNRHR variant
You carry one copy of this variant, which is associated with autosomal recessive hypogonadotropic hypogonadism. Because this condition is typically recessive, carrying a single copy is generally not expected to cause the clinical symptoms of the disorder, though you may be a carrier for the condition.
This genotype is rare, occurring in approximately 0.06% of European populations based on the reported minor allele frequency.
Potential GNRHR-related reproductive impact
This genotype indicates you carry two copies of the variant, which has been linked to autosomal recessive normosmic idiopathic hypogonadotropic hypogonadism. This condition can affect the body's ability to produce necessary reproductive hormones, potentially leading to delayed puberty or reproductive challenges. Please discuss these findings with a medical professional or genetic counselor to understand your specific health context.
This genotype is extremely rare in the general population.
Understanding the Variant
The variant rs104894466 is a single nucleotide polymorphism (SNP) located within the GNRHR gene, which provides instructions for making the gonadotropin-releasing hormone receptor. This receptor is a critical component of the endocrine system, acting as a gatekeeper for reproductive signaling. When a variant occurs at this specific site, it can alter the structure or function of the resulting protein. In the context of clinical genetics, this variant is categorized as a missense mutation, meaning the change in the DNA sequence results in a different amino acid being incorporated into the receptor protein. This alteration can potentially disrupt the receptor's ability to bind to its signaling hormone, which is a necessary step for the body to initiate the cascade of events leading to sexual maturation and reproductive function.
The Role of the GNRHR Gene
The GNRHR gene encodes the receptor for gonadotropin-releasing hormone (GnRH). This hormone is released by the hypothalamus and travels to the pituitary gland, where it binds to the GnRH receptor. This binding event triggers the pituitary to secrete luteinizing hormone (LH) and follicle-stimulating hormone (FSH). These two hormones are essential for the development and function of the gonads—the testes in males and the ovaries in females. By regulating the release of these hormones, the GNRHR gene acts as a master switch for puberty and fertility. When the receptor is dysfunctional due to genetic variants, the pituitary may not receive the necessary signals to produce sufficient levels of LH and FSH, which can lead to a condition known as hypogonadotropic hypogonadism, characterized by a lack of pubertal development and potential infertility.
Research and Evidence Strength
Research into GNRHR variants has established a clear link between loss-of-function mutations and reproductive health conditions. The evidence for rs104894466 is classified as limited in some clinical databases, though it is widely cited in studies regarding idiopathic hypogonadotropic hypogonadism. Scientific literature, including studies published in journals like the Journal of Clinical Endocrinology & Metabolism, has documented how various GNRHR mutations can lead to a spectrum of reproductive phenotypes. These range from constitutional delay of growth and puberty to more complete forms of hypogonadism. Because the condition is typically inherited in an autosomal recessive pattern, an individual usually needs to inherit two copies of a pathogenic variant—one from each parent—to manifest the clinical symptoms. Digenic inheritance, where variants in two different genes interact, has also been observed in some families, adding complexity to how these genetic findings translate into clinical outcomes.
Population Frequency
The rs104894466 variant is considered rare in the general population. Current data indicates a minor allele frequency (MAF) of approximately 0.0003 in European populations. Because this variant is rare, the likelihood of an individual carrying two copies of the variant is extremely low in the general population. Most individuals who carry the variant are asymptomatic heterozygotes, meaning they have one copy of the variant and one functional copy of the gene. These carriers typically do not exhibit the clinical features of hypogonadotropic hypogonadism. The rarity of the variant underscores the importance of clinical context; genetic findings should always be interpreted by a qualified healthcare professional or genetic counselor who can consider family history and clinical symptoms rather than relying on the genotype alone.
Interpreting Your Results
If you have received information about your status for rs104894466, it is important to understand that this information is for educational purposes and does not constitute a medical diagnosis. Genetic variants are only one piece of a complex biological puzzle. If you are concerned about pubertal development, fertility, or reproductive health, you should consult with an endocrinologist or a reproductive specialist. These professionals can provide appropriate testing, such as hormone level assessments, to determine if there is an underlying clinical issue. Never make changes to your health management or medication based on genetic reports without professional guidance. If you are currently undergoing treatment for a reproductive condition, discuss your genetic profile with your clinician, as it may provide context for your response to specific therapies, but it should not replace standard clinical evaluation and care.
How common is this variant?
The rs104894466 variant is rare, with a minor allele frequency of approximately 0.0003 in European populations.
Frequently asked questions
What is GNRHR-related hypogonadism?
It is a condition where the body fails to produce enough reproductive hormones because the GnRH receptor is not functioning correctly. This often results in delayed or absent puberty and potential fertility challenges.
Is rs104894466 a cause of infertility?
While variants in the GNRHR gene can contribute to reproductive challenges, they are only one of many potential causes. A diagnosis of infertility requires a comprehensive evaluation by a medical professional.
Can I be a carrier of this variant?
Yes, it is possible to be a carrier if you have one copy of the variant. Because the condition is recessive, carriers usually do not show symptoms of the disorder.
Should I get tested for this variant?
Genetic testing is typically recommended by a doctor if there are clinical symptoms or a strong family history of reproductive issues. It is not generally recommended for the general population without a clinical reason.
Sources & further reading
Educational information only, last refreshed 9/20/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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This synonymous variant in the gonadotropin-releasing hormone receptor gene is studied for its potential role in modulating reproductive hormone responsiveness.
Pathogenic missense substitution (p.Arg262Gln) in GNRHR linked to autosomal recessive normosmic congenital hypogonadotropic hypogonadism.
Gonadotropin-releasing hormone receptor variant associated with altered gonadotropin pulsatility and susceptibility to delayed puberty.
A missense variant (p.Gln106Arg) in the gonadotropin-releasing hormone receptor associated with normosmic congenital hypogonadotropic hypogonadism.
Common missense variant (p.Gln106Arg) in the gonadotropin-releasing hormone receptor associated with hypogonadotropic hypogonadism and delayed puberty when compound heterozygous.
Pathogenic missense variant disrupting GnRH binding in the pituitary gonadotropes, causing severe hypogonadotropic hypogonadism.