proband
['proʊbænd]
n.
（家系研究中尤指遗传疾病的家属史研究中的）渊源者，先证者，基人;
例句:
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Methods: Family - based nonparametric genome - wide linkage analysis was performed in by either an HLHS or BAV proband.
方法: 在有左室发育不全和二叶式主动脉瓣先证者的家系中进行非参数基因组连锁分析.
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In clinical scenarios, the patient of interest is shown by an arrow and is known as the proband.
来自BBC