Developmental validation of the PowerPlex(®) Fusion System for analysis of casework and reference samples: A 24-locus...

Area of Science:

• Forensic Science
• Genetics
• Molecular Biology

Background:

• The 13 core short tandem repeat (STR) loci in the CODIS database have been effective for forensic identification.
• Limitations exist, necessitating more discriminatory markers for complex cases and enhanced human identification capabilities.

Purpose of the Study:

• To validate the PowerPlex® Fusion System for simultaneous amplification of 24 STR loci.
• To assess the system's compatibility with expanded CODIS and European Standard Set (ESS) requirements.
• To confirm the system's robustness and reliability for forensic applications.

Main Methods:

• Simultaneous amplification of 24 STR loci, including Amelogenin and others.
• Developmental validation testing adhering to Scientific Working Group on DNA Analysis Methods (SWGDAM) guidelines.
• Data compilation from 12 independent forensic and research laboratories.

Main Results:

• The PowerPlex® Fusion System successfully amplified all 24 targeted STR loci.
• Validation testing demonstrated high quality and robustness across various conditions.
• Consistent results were obtained from multiple laboratories, confirming reliability.

Conclusions:

• The PowerPlex® Fusion System is a robust and reliable tool for human identification.
• The system offers increased discrimination power compared to the original CODIS 13 core loci.
• It is suitable for forensic casework and compatible with major database requirements.