Fraction of case and control samples in which an extra copy of APOL1 was detected by either a PCR assay designed to amplify across the insertional junction, or by a quantitative Taqman-based copy number assay.

Fraction of case and control samples in which an extra copy of APOL1 was detected by either a PCR assay designed to amplify across the insertional junction, or by a quantitative Taqman-based copy number assay.该指标为通过两种检测方法——即设计用于扩增插入连接位点的聚合酶链式反应（PCR）检测，以及基于Taqman的定量拷贝数检测——在病例样本与对照样本中，检出携带APOL1额外拷贝的样本所占比例。