New Perspectives for Whole Genome Amplification in Forensic STR Analysis

Area of Science:

• Forensic Science
• Molecular Biology
• Genetics

Background:

• Modern PCR techniques yield complete forensic DNA profiles from minute traces (125 pg).
• Current methods struggle with trace evidence like fingerprints and single cells.
• Whole genome amplification (WGA) was proposed to increase DNA copy number for analysis.

Purpose of the Study:

• To review current knowledge on WGA in forensic science.
• To identify promising forensic applications for WGA.
• To address past limitations and recent advancements in WGA for forensics.

Main Methods:

• Review of existing literature on WGA in forensic contexts.
• Analysis of WGA's historical performance and challenges.
• Identification of novel WGA methods and their potential applications.

Main Results:

• Previous WGA applications in forensics yielded limited improvements and analytical issues.
• Forensic application of WGA was largely abandoned due to disappointments.
• Recent advancements indicate potential for WGA in specific forensic scenarios.

Conclusions:

• WGA has a renewed perspective for forensic applications.
• Forensic analysis of single-donor bioparticles is a promising WGA application.
• Forensic analysis of single cells presents another key opportunity for WGA.