Experience of Pembrolizumab Administration in A Patient with Castration-Resistant Microsatellite Instability-High Prostate Cancer
Castration-resistant prostate cancer and multiple lymph node and ventral bladder metastases in an 87 year-old man progressed despite various systemic therapies, including chemotherapy. Because his prostate surgical specimen displayed a microsatellite instability (MSI) -high status, pembrolizumab 200 mg/body treatment was started. After six courses of treatment, his prostate-specific antigen (PSA) level decreased by 83% versus that at treatment initiation (from 408.78 ng/ml to 69.54 ng/ml), and the para-aortic lymph node metastasis was reduced in size on imaging. After 13 courses, his PSA level (462.59 ng/ml) exceeded that at the start of treatment, and progressive disease was detected on imaging. Although case reports of pembrolizumab for MSI-high prostate cancer remain few because of its rarity, it is an important therapeutic option and further clinical research is required.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:70 |
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| Enthalten in: |
Hinyokika kiyo. Acta urologica Japonica - 70(2024), 2 vom: 04. Feb., Seite 51-54 |
| Sprache: |
Japanisch |
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| Beteiligte Personen: |
Takasawa, Takuya [VerfasserIn] |
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| Links: |
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| Themen: |
Antibodies, Monoclonal, Humanized |
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| Anmerkungen: |
Date Completed 08.03.2024 Date Revised 08.03.2024 published: Print Citation Status MEDLINE |
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| doi: |
10.14989/ActaUrolJap_70_2_51 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Castration-resistant prostate cancer and multiple lymph node and ventral bladder metastases in an 87 year-old man progressed despite various systemic therapies, including chemotherapy. Because his prostate surgical specimen displayed a microsatellite instability (MSI) -high status, pembrolizumab 200 mg/body treatment was started. After six courses of treatment, his prostate-specific antigen (PSA) level decreased by 83% versus that at treatment initiation (from 408.78 ng/ml to 69.54 ng/ml), and the para-aortic lymph node metastasis was reduced in size on imaging. After 13 courses, his PSA level (462.59 ng/ml) exceeded that at the start of treatment, and progressive disease was detected on imaging. Although case reports of pembrolizumab for MSI-high prostate cancer remain few because of its rarity, it is an important therapeutic option and further clinical research is required | ||
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