FOXL2 rs767764: Genetics of Nose Shape Variation
The genetic variant rs767764 is a common single-nucleotide polymorphism located in the region of the FOXL2 gene on chromosome 3. Genome-wide association studies have identified this variant as being associated with normal human facial morphology, specifically quantitative nasal dimensions. Rather than causing disease, rs767764 contributes modestly to the natural diversity observed in human nose shape across populations.
What each genotype means
Typical facial morphology profile
You carry two copies of the ancestral A allele at rs767764 near the FOXL2 gene. In genome-wide association studies evaluating normal human facial variation, this genotype is typically associated with standard baseline measurements of nasal morphology, including nasal bridge and width characteristics. Because facial features are polygenic and influenced by environmental and developmental factors, this variant represents only an incremental statistical contribution to overall facial shape.
Found in approximately 30% to 35% of individuals of East Asian ancestry, and more common in European and African populations where the A allele is predominant.
Intermediate nose shape profile
You carry one copy of the A allele and one copy of the G allele at rs767764. Research into craniofacial traits indicates that the G allele is moderately associated with slight shifts in quantitative nasal dimensions, such as nasal bridge height and width. This genetic association reflects normal anthropometric variation across populations rather than any clinical or pathological condition.
Carried by approximately 45% to 50% of people in East Asian cohorts, and observed at varying frequencies across other global populations.
Modified nasal dimension profile
You carry two copies of the G allele at rs767764 in the FOXL2 locus. Studies examining facial morphological traits identify this genotype as being associated with subtle alterations in quantitative nose shape metrics, notably in cohorts of East Asian descent. Overall nasal appearance remains governed by the combined effects of dozens of genetic loci and developmental factors.
Present in roughly 15% to 20% of East Asian populations, where the G allele has a frequency of approximately 0.42, but is less frequent in European ancestries.
What Is rs767764 and Where Is It Located?
The single-nucleotide polymorphism rs767764 is a common point variation residing on chromosome 3 within the 3q22.3 genomic region. This region houses the FOXL2 gene locus, an area of high interest in developmental and evolutionary biology. At rs767764, individuals carry combinations of the common cytosine (C) and thymine (T) alleles. Like most common variants detected through genome-wide scans, rs767764 is located in non-coding sequence, likely functioning as a regulatory element or existing in linkage disequilibrium with other regulatory variants that modulate gene expression during tissue development. Because it does not directly alter the primary amino acid sequence of a protein, its biological effects manifest as subtle, quantitative shifts in anatomical measurements rather than dramatic structural alterations.
The Biological Function of the FOXL2 Gene
The FOXL2 gene encodes forkhead box L2, a member of the forkhead/winged-helix family of transcription factors that regulate gene expression by binding specific DNA target sequences. As detailed by [MedlinePlus Genetics FOXL2](https://medlineplus.gov/genetics/gene/foxl2/), the FOXL2 protein plays essential roles in female reproductive biology, specifically in ovarian development, maintenance, and granulosa cell differentiation. In addition to its classical endocrine functions, FOXL2 is actively expressed during early embryonic craniofacial development. It is involved in coordinating cellular proliferation, differentiation, and tissue patterning in periocular and facial structures. Rare loss-of-function mutations in FOXL2 lead to Mendelian craniofacial syndromes such as blepharophimosis, ptosis, and epicanthus inversus syndrome, demonstrating that proper regulation of this locus is critical for facial morphology.
Research Evidence on Nasal Dimensions and Facial Traits
In large-scale population studies indexed in repositories like the [GWAS Catalog](https://www.ebi.ac.uk/gwas/), rs767764 has shown replicated associations with quantitative facial phenotypes, notably human nasal dimensions. High-density facial surface imaging and dense phenotyping have allowed researchers to dissect the complex genetics underlying human facial diversity. Multiple cohorts have linked the FOXL2 locus, tagged by rs767764, to variations in nose bridge width, alar base width, and nasal projection. The evidence strength for this association is moderate; while replication has confirmed statistical significance across distinct study groups, the effect size attributable to this single variant is modest. Complex morphological features such as nose shape are highly polygenic, meaning rs767764 acts in concert with hundreds of other genetic variants to shape the final anatomical outcome.
How Common Is rs767764 Across Populations?
Allele frequencies for rs767764 vary significantly across global ancestries, a typical feature of genetic loci that govern external phenotypic diversity. Research catalog data indicates that the minor allele has an approximate frequency of 0.42 (42%) in East Asian populations. In other ancestral groups, such as European, African, and South Asian cohorts, the allele frequencies may differ, reflecting distinct demographic histories, genetic drift, and regional evolutionary selection pressures. Because the minor allele is present in a substantial fraction of individuals in tested populations, carrying the alternate allele is entirely typical and represents normal human genetic variation rather than a clinical abnormality.
Understanding What This Information Means for You
Discovering your genotype at rs767764 provides interesting insight into the genetic architecture of human facial variation, but it carries no clinical diagnostic value. This variant is categorized as a benign physical trait marker rather than a disease susceptibility allele. Genotypic data at this single locus cannot predict your exact nasal profile or reconstruct your facial appearance in isolation, as nose shape is shaped by polygenic inheritance, cartilage remodeling, and environmental factors such as developmental conditions or nasal trauma. Genetic tests reporting rs767764 are educational and should not be used to infer medical risks or make decisions regarding clinical care.
How common is this variant?
The minor allele of rs767764 demonstrates a frequency of approximately 0.42 in East Asian populations, with varying frequencies across other global ancestries as documented in genomic population databases.
Frequently asked questions
Does rs767764 cause any diseases or medical conditions?
No, rs767764 is a common non-coding variant associated strictly with normal variations in facial traits and nasal dimensions. It is not classified as a pathogenic mutation and does not cause congenital malformations or disease.
Can my rs767764 genotype predict what my nose looks like?
No, a single genetic variant cannot predict your facial structure. Nasal shape is a complex polygenic trait influenced by many hundreds of genetic variants acting together, along with non-genetic factors.
How is rs767764 related to the FOXL2 gene's known medical conditions?
Severe clinical conditions involving FOXL2, such as BPES, arise from rare coding mutations or structural deletions. In contrast, rs767764 is a common regulatory variant that subtly influences natural anatomical traits without causing medical disorders.
What should I do if this variant appears in my consumer DNA test?
No medical action is necessary. The result simply highlights one genetic factor involved in facial development and can be appreciated as an educational insight into human morphological diversity.
Sources & further reading
Educational information only, last refreshed 9/13/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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