Abstract
A 67-year-old man with metastatic prostate cancer was treated with leuprorelin and enzalutamide, but presented radiographic progression after 1 year. Although docetaxel chemotherapy was initiated, liver metastasis appeared with elevation of nerve-specific enolase in serum. Pathological findings of needle biopsy of lymph node metastasis in the right inguinal region showed neuroendocrine carcinoma. FoundationOne CDx® using a biopsy sample of the prostate at initial diagnosis detected the BRCA1 mutation (deletion of intron 3–7), but BRACAnalysis® test revealed no BRCA mutation in germline. Then, olaparib treatment was initiated, resulting in remarkable remission of tumors, but comorbidity with interstitial pneumonia. This case suggested that olaparib could be effective for neuroendocrine prostate cancer with BRCA1 gene mutation, but may cause interstitial pneumonia.
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Masaki Shiota received honoraria from Janssen Pharmaceutical, AstraZeneca, Astellas Pharma, and Sanofi. Masatoshi Eto received honoraria from Takeda Pharmaceutical, and Janssen Pharmaceutical, and research funding support from Sanofi, Bayer Yakuhin, Astellas Pharma, and Takeda Pharmaceutical.
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Kaitsumaru, M., Shiota, M., Takamatsu, D. et al. Interstitial pneumonia after regression by olaparib for neuroendocrine prostate cancer with BRCA1 mutation: a case report. Int Canc Conf J 12, 131–136 (2023). https://doi.org/10.1007/s13691-022-00592-5
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DOI: https://doi.org/10.1007/s13691-022-00592-5