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非人类DNA混合物的概率基因型定型:使用MaSTRTM分析使用DogFiler基因型定型的混合犬类STR

Samantha L Badgett¹, Teresa M Tiedge², Taylor B Parker²

¹College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607, USA.

Forensic science international. Genetics

|January 31, 2026

概括

概率基因型 (PG) 软件MaSTRTM成功分析了非人类短串重复 (STR) DNA混合物,显示了野生动物法医学的前景. 这项评估证明了准确的贡献者识别和低的错误率,即使是复杂的狗DNA样本.

科学领域:

法医科学法医科学法医科学
遗传学是一个遗传学.
野生动物法医学野生动物法医学

背景情况:

短串重复 (STR) 打字对于法医科学中的个性化至关重要.
解释混合或低质量的STR配置文件带来了重大挑战.
概率基因型定型 (PG) 为复杂的STR分析提供了先进的计算解决方案.

研究的目的:

对PG软件进行首次评估,用于分析非人类STR混合物.
为了评估MaSTRTM软件的性能,使用家养狗 (Canis lupus familiaris) 的DNA混合物.
确定软件在识别贡献者和计算概率比率方面的准确性.

主要方法:

创造了各种比例的家养狗DNA的人工混合物.
混合物包括不同程度的等位基因共享的非相关和相关个体.
使用MaSTRTM软件与DogFiler STR面板的自定义模型一起用于分析配置文件.

主要成果:

马斯特TM在分析犬类STR混合物方面表现出很高的准确性,无论其比例或等位基因共享如何.
在复制分析中观察到较低的变化系数 (1.83-2.42%).
错误排除率为0.43%,错误纳入率为0%,表明业绩强.

结论:

马斯特TM是一种可行的工具,用于分析野生动物法医案例中的非人类STR混合物.
该研究为在非人类法医应用中实施PG提供了基础性评估.
建议通过判定案例样本进行进一步验证,以便更广泛地采用.

关键词:

这是一只家养的狗.马斯特罗是一位大师.可能性基因型鉴定.短串联重复的重复.野生动物法医学

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