Researchers are studying the role of rare variant polygenic risk scores in various diseases using whole exome sequencing and imputed genotype data. The studies appear to be examining the impact of both common and rare genetic variants on disease risk and clinical presentation across different populations and conditions, including pulmonary fibrosis, ADHD, diabetes, glaucoma, and certain types of cancer. The findings suggest that integrating common and rare variants can improve polygenic risk prediction and disease risk stratification.