PAX3 rs6535972: Facial Shape and Genetic Variation
The rs6535972 variant is a single-nucleotide polymorphism located in the PAX3 gene region on chromosome 2. Genome-wide association research has linked this variant to normal subtle variations in human craniofacial morphology, specifically upper facial landmarks such as the nasion and forehead profile. It represents benign, natural diversity in human physical appearance rather than a medical condition.
What each genotype means
Typical forehead and nasion morphology
You carry two copies of the common A allele for rs6535972 in the PAX3 gene. Genome-wide association studies link this genomic locus with subtle normal variations in craniofacial architecture, specifically the prominence and height of the nasion and forehead projection. Because facial structure is shaped by hundreds of genetic factors and developmental influences, carrying this genotype is associated with baseline or typical upper facial features rather than a noticeable difference.
Carried by approximately 38% to 40% of individuals globally, making it the most frequent genotype across many major populations.
Intermediate upper facial projection
You carry one A allele and one G allele at the rs6535972 locus. In published population studies, the G allele in this PAX3 chromosomal region has been associated with small, millimeter-scale shifts in nasal root prominence and nasion position. The overall evidence for this specific variant is limited and facial appearance is highly polygenic, so this genotype simply reflects a slight statistical trend within normal facial shape diversity.
Carried by roughly 47% of people worldwide, representing the largest heterozygous fraction in diverse continental ancestries.
Altered nasion position profile
You have two copies of the G allele for rs6535972 within the PAX3 gene region. Research into three-dimensional craniofacial morphology suggests that this genotype is correlated with subtle differences in upper facial landmarks, such as altered forehead slope and nasion prominence. These findings reflect benign, population-level morphological variations and do not indicate any health or medical condition.
Carried by approximately 14% to 15% of individuals globally, although allele distributions can vary moderately between European, Asian, and other regional groups.
What is rs6535972 and Where is it Located?
The genetic variant rs6535972 is a single-nucleotide polymorphism (SNP) situated within the PAX3 gene region on human chromosome 2. At this specific location in the genome, individuals may inherit an adenine (A) or a guanine (G) allele from each parent, yielding common genotypes of AA, AG, or GG. Because rs6535972 is a non-coding variant, it does not alter the underlying amino acid sequence of any protein directly. Instead, research indicates that non-coding variants in this genomic region likely function by subtly modifying regulatory elements or gene expression patterns during embryonic craniofacial development. Identifying this variant in consumer genetic reports reflects natural, common genetic variation that shapes our physical diversity rather than a disease-causing mutation.
The Biological Role of the PAX3 Gene
The PAX3 gene provides instructions for producing a critical transcription factor belonging to the paired-box family of developmental proteins. During embryonic formation, PAX3 plays an indispensable role in regulating the migration, proliferation, and differentiation of neural crest cells. These specialized precursor cells contribute directly to the formation of human craniofacial bones, cartilage, skin pigment, and peripheral nerves. While severe, rare mutations that disrupt PAX3 protein function can cause developmental disorders such as Waardenburg syndrome, common regulatory variants like rs6535972 exert far gentler influences. Instead of disrupting normal physiology, such common polymorphisms contribute to the natural, everyday differences in facial structure observed across healthy human populations.
Research Associations with Facial Morphology
Multiple genome-wide association studies (GWAS) utilizing three-dimensional facial photogrammetry have highlighted rs6535972 and closely linked PAX3 markers for their association with facial features. In particular, published studies show significant correlations with variation in the upper face, including forehead projection and the position of the nasion—the midline landmark where the nasal bridge meets the frontal bone. However, scientists classify the evidence strength as limited to modest when considering predictive power. Facial morphology is an intensely polygenic trait governed by hundreds of interconnected genetic loci alongside developmental and environmental factors. Consequently, carrying a particular rs6535972 allele only nudges specific structural landmarks by tiny fractions of a millimeter and cannot predict overall appearance.
Population Frequency and Ancestry Patterns
The alleles of rs6535972 are common throughout global human populations. According to aggregated genomic databases including gnomAD, the overall global allele frequency is approximately 62% for the A allele and 38% for the G allele. Both alleles are widespread across major ancestral groups, though exact genotype distributions can shift subtly between European, Asian, African, and American cohorts due to historical population dynamics. Because facial morphology traits are highly polygenic and subject to subtle population substructure, researchers caution that statistical associations discovered in one ancestry group might vary in magnitude or correlation strength when examined in others. This widespread distribution underscores that both alleles represent normal, standard variations in human biology.
What You Can and Cannot Do With This Information
Learning your rs6535972 genotype provides an interesting glimpse into the developmental genetics that shape human physical traits, but it carries no clinical diagnostic utility. This SNP is classified as a benign physical trait marker, meaning it does not diagnose, predict, or increase the risk for any medical disorder or health impairment. Furthermore, personal genetic testing cannot reliably use this single marker to reconstruct a person's face or forensic likeness, as human facial appearance emerges from complex interactions among hundreds of genes, nutrition, age, and sex. Readers should view this result purely as educational insight into the genomics of human diversity and should not make any medical or lifestyle decisions based on it.
How common is this variant?
According to gnomAD global reference data, the A allele occurs at a frequency of approximately 0.62 while the G allele occurs at 0.38, making both alleles common across worldwide populations.
Frequently asked questions
Does my rs6535972 genotype determine my nose and face shape?
No. While rs6535972 is statistically associated with subtle shifts in landmarks like the nasion, facial shape is shaped by hundreds of different genes as well as environmental factors. This single variant exerts only a tiny effect on overall appearance.
Is the PAX3 rs6535972 variant linked to any disease?
No, rs6535972 is categorized as a benign trait variant associated with normal human physical variation. It is not associated with Waardenburg syndrome or any other medical condition.
Why do genetic studies look at PAX3 for facial features?
The PAX3 gene plays a fundamental role in guiding neural crest cells during embryonic development, which form the bones and cartilage of the face. Subtle changes in how PAX3 is expressed can influence the structural contours of the nose and forehead.
Can law enforcement or direct-to-consumer tests recreate a face using rs6535972?
No. Predicting full 3D facial appearance from DNA remains outside current scientific capabilities because individual SNPs account for miniscule percentages of overall facial variance. rs6535972 alone cannot be used to generate a reliable facial likeness.
Sources & further reading
Educational information only, last refreshed 9/12/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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Get my report — $29Related variants in PAX3
Intronic variant in PAX3 associated with normal variation in human facial morphology, specifically nasion position and nasal root protrusion.
Associated with normal variation in human facial morphology, specifically upper lip positioning and philtrum contouring.
Variant in the PAX3 region significantly associated with nasion position and variation in normal human facial profile morphology.
This variant is associated with facial morphology and is located in a gene known for its role in craniofacial development.
Discovered in genome-wide association analysis of large-effect single-gene variants influencing eye and peri-orbital morphology.