Affiliation:
1. Department of Forensic Medicine Seoul National University College of Medicine Seoul South Korea
2. Forensic DNA Section National Forensic Service Jeju Branch Jeju South Korea
3. Forensic DNA Division National Forensic Service Wonju South Korea
4. Institute of Forensic and Anthropological Science Seoul National University College of Medicine Seoul South Korea
Abstract
AbstractThe DNA intelligence tool, DNA methylation‐based age prediction, can help identify disaster victims and suspects in criminal investigations. In this study, we developed a costal cartilage‐based age prediction tool that uses massive parallel sequencing (MPS) of age‐associated DNA methylation markers. Costal cartilage samples were obtained from 85 deceased Koreans, aged between 26 and 89 years. An MPS library was prepared using two rounds of multiplex polymerase chain reaction of nine genes (TMEM51, MIR29B2CHG, EDARADD, FHL2, TRIM59, ELOVL2, KLF14, ASPA, and PDE4C). The DNA methylation status of 45 CpG sites was determined and used to train an age prediction model via stepwise regression analysis. Nine CpGs in MIR29B2CHG, FHL2, TRIM59, ELOVL2, KLF14, and ASPA were selected for regression model construction. A leave‐one‐out cross‐validation analysis revealed the high performance of the age prediction model, with a mean absolute error (MAE) and root mean square error of 4.97 and 6.43 years, respectively. Additionally, our model showed good performance with a MAE of 6.06 years in the analysis of data of 181 costal cartilage samples collected from Europeans. Our model effectively estimates the age of deceased individuals using costal cartilage samples; therefore, it can be a valuable forensic tool for disaster victim and missing person investigation.
Funder
Korean National Police Agency
Ministry of the Interior and Safety
Cited by
2 articles.
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