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Polygenic Traits

Polygenic Traits

When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...

Multiple Allele Traits

Multiple Allele Traits

The Concept of Multiple Allelism

Heritability

Heritability

Heritability is a statistical concept that measures the degree to which genetic differences among individuals contribute to trait variations within a population. It is a fundamental idea in genetics, often prone to misinterpretation. Heritability is expressed as a percentage, reflecting the proportion of variation in a specific trait across a population that can be linked to genetic differences. However, it's important to understand that heritability does not determine how "genetic"...

Genome-wide Association Studies-GWAS

Genome-wide Association Studies-GWAS

Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...

Single Nucleotide Polymorphisms-SNPs

Single Nucleotide Polymorphisms-SNPs

A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...

Human Genetics

Human Genetics

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...

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Related Experiment Video

Updated: Jan 13, 2026

High-resolution Melting PCR for Complement Receptor 1 Length Polymorphism Genotyping: An Innovative Tool for Alzheimer's Disease Gene Susceptibility Assessment

High-resolution Melting PCR for Complement Receptor 1 Length Polymorphism Genotyping: An Innovative Tool for Alzheimer's Disease Gene Susceptibility Assessment

Published on: July 18, 2017

Homomorphic encryption enables privacy preserving polygenic risk scores.

Elizabeth Knight¹, Jiaqi Li¹, Matthew Jensen¹

¹Program in Computational Biology and Biomedical Informatics, Yale University, New Haven, CT 06520, USA.

Cell Reports Methods

|January 9, 2026

Summary

Fully homomorphic encryption (FHE) enables privacy-preserving polygenic risk score models (PRSs) for personalized medicine. Our HEPRS tool demonstrates practical, accurate, and secure genomic risk prediction without compromising sensitive patient data.

Keywords:

CP: computational biology CP: genetics genomic privacy genomics homomorphic encryption polygenic risk score

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Last Updated: Jan 13, 2026

High-resolution Melting PCR for Complement Receptor 1 Length Polymorphism Genotyping: An Innovative Tool for Alzheimer's Disease Gene Susceptibility Assessment

High-resolution Melting PCR for Complement Receptor 1 Length Polymorphism Genotyping: An Innovative Tool for Alzheimer's Disease Gene Susceptibility Assessment

Published on: July 18, 2017

Heterogeneity Mapping of Protein Expression in Tumors using Quantitative Immunofluorescence

Heterogeneity Mapping of Protein Expression in Tumors using Quantitative Immunofluorescence

Published on: October 25, 2011

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information

Published on: August 15, 2019

Area of Science:

Genomics
Cryptography
Precision Medicine

Background:

Polygenic risk scores (PRSs) are crucial for personalized risk prediction in precision medicine.
The use of PRSs raises significant privacy concerns due to the sensitive nature of genomic data.

Purpose of the Study:

To develop and evaluate an open-source implementation of fully homomorphic encryption (FHE) for privacy-preserving polygenic risk score (PRS) models.
To assess the feasibility and accuracy of using FHE for secure genomic data computation.

Main Methods:

Developed HEPRS, an open-source system utilizing a three-party model (clients, modelers, evaluators) for FHE-based PRS.
Applied HEPRS to synthetic datasets and a 110,000 SNP schizophrenia risk model.
Investigated encryption parameters affecting accuracy, memory, and computation time.

Main Results:

Encrypted and plaintext PRSs showed close agreement, indicating high accuracy.
HEPRS demonstrated practical usability on a single CPU.
The study confirmed that FHE enables realistic PRS with negligible accuracy loss.

Conclusions:

Fully homomorphic encryption offers a viable solution for privacy-preserving PRS.
HEPRS supports secure and scalable genomic analytics, enhancing precision medicine applications.
The developed FHE implementation facilitates confidential risk prediction from sensitive genomic data.