[Calculation of paternity index for paternity testing with considering mutation]

Area of Science:

• Forensic Genetics
• Human Genetics
• Molecular Biology

Context:

• Paternity testing relies on calculating the paternity index (PI).
• Genetic mutations can complicate PI calculations, potentially leading to inaccurate results.
• Existing methods may not adequately address the impact of mutations on paternity exclusion.

Purpose:

• To develop and recommend novel formulas for calculating the paternity index in paternity testing that explicitly account for genetic mutations.
• To enhance the reliability of paternity testing by addressing a known source of error.

Summary:

• The study derived new formulas based on the Brenner method to calculate the paternity index, incorporating the effects of genetic mutations.
• These formulas effectively differentiate between true and false paternity exclusions when genetic patterns are inconsistent with paternity.
• The results demonstrate that the derived formulas provide a more robust assessment of paternity.

Impact:

• Provides improved scientific evidence for paternity testing, especially in cases with genetic inconsistencies.
• Offers a refined approach for forensic geneticists and legal professionals involved in paternity determination.
• Suggests adding more genetic markers when standard thresholds for combined probability of exclusion or paternity index are not met, ensuring higher certainty.