AUTHOR=Jiang Bohao , Bi Yifan , Chen Yiming , Bi Jianbin , Deng Jian , Zhang Gejun TITLE=Case Report: Two cases of chemotherapy refractory aggressive variant prostate cancer with extreme durable response to PARP inhibitor JOURNAL=Frontiers in Oncology VOLUME=Volume 15 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2025.1533627 DOI=10.3389/fonc.2025.1533627 ISSN=2234-943X