article_metadata: Tian Fang Tingting Liang Yizhuo Wang Haitao Wu Shuhan Liu Linying Xie Zhihao Zhang Jiaying Liang Cheng Yao Yehui Tan Chang Wang
article_metadata: 10.3389/fonc.2021.755578
article_metadata: Front Oncol
article_metadata: 2021 Nov 23;11:755578.
article_metadata: kras anti-egfr monoclonal antibody case report cetuximab colorectal cancer gene amplification gene copy number
article_metadata: CC BY
article_metadata: https://pubmed.ncbi.nlm.nih.gov/34888240/
article_metadata: Case Reports
article_metadata: PMC8649836
article_metadata: 34888240
article_metadata: An Early-Onset Advanced Rectal Cancer Patient With Increased KRAS Gene Copy Number Showed A Primary Resistance to Cetuximab in Combination With Chemotherapy: A Case Report
article_metadata: 2021