主干 Efficacy data were provided ,as assessed
Efficacy data 主语
supporting panitumumab use 现在分词作定语修饰主语Efficacy data
in the treatment of patients 介宾结构做后置定语修饰panitumumab use
with refractory metastatic colorectal cancer (mCRC) 介宾结构做后置定语修饰patients
were provided 被动形式的谓语
by studies 介宾结构做状语修饰被动谓语were provided, 表达被动谓语provided 的主动实施者
of patients 介宾结构做后置定语修饰studies
whose tumors were EGFR-expressing 定语从句修饰patients
as 连词 连接provided 和 assessed, 表时间 即后面的动作（assessed ）是在前面的动作（provided）之前完成的
assessed 与 provided 并列 都是跟在were后面体现被动 做被动谓语
by Dako EGFR pharmDx™ assay 介宾结构做状语修饰被动谓语were assessed ,表达被动谓语assessed 的主动实施者
就这样吧 这么多专业词汇 我不想翻