Publications by authors named "Kazuo Oba"

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Comprehensive Evaluation of Androgen Receptor Pathway Inhibitors in Metastatic Castration-Sensitive Prostate Cancer: A Multicenter Inverse Probability of Treatment Weighting-Based Study.
Keita Kobayashi, Takanori Tokunaga, Kazuhiro Nagao, Koki Fujikawa, Kazuo Oba

Clin Genitourin Cancer· December 2025

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Refining the CHAARTED Classification: Clinical Utility of a Novel Integrated Risk Stratification Model Incorporating Gleason Grade and Biochemical Markers in Japanese Patients With Metastatic Hormone-Sensitive Prostate Cancer.
Takanori Tokunaga, Keita Kobayashi, Kazuhiro Nagao, Kouki Fujikawa, Kazuo Oba

Prostate· October 2025

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The Pretreatment Neutrophil-to-Eosinophil Ratio Can Predict Immune-Related Adverse Events and Outcomes in Patients With Advanced Urothelial Carcinoma Treated With Immune Checkpoint Inhibitors.
Keita Kobayashi, Shigeru Sakano, Hiroaki Matsumoto, Masahiro Tsuchida, Yasuhide Tei, Kazuo Oba

Cureus· August 2025

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Prognostic risk score and index including the platelet-to-lymphocyte ratio and lactate dehydrogenase in patients with metastatic or unresectable urothelial carcinoma treated with immune checkpoint inhibitors.
Keita Kobayashi, Shigeru Sakano, Hiroaki Matsumoto, Mitsutaka Yamamoto, Masahiro Tsuchida, Kazuo Oba

Jpn J Clin Oncol· February 2025

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Comparative Efficacy of Avelumab Maintenance Therapy Versus Continued Chemotherapy Followed by Pembrolizumab in Metastatic Urothelial Carcinoma With No Progression After 4 Cycles of Chemotherapy: A Retrospective Study Using Propensity Score Matching.
Keita Kobayashi, Hiroaki Matsumoto, Shigeru Sakano, Mitsutaka Yamamoto, Masahiro Tsuchida, Kazuo Oba

Clin Genitourin Cancer· December 2024

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Predictive factor of recurrence after endoscopic papillectomy for ampullary neoplasms.
Kosuke Takahashi, Eisuke Ozawa, Ichiro Yasuda, Naohiro Komatsu, Hisamitsu Miyaaki, Kazuo Oba

J Hepatobiliary Pancreat Sci· July 2021

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Prognostic value of pre-treatment risk stratification and post-treatment neutrophil/lymphocyte ratio change for pembrolizumab in patients with advanced urothelial carcinoma.
Yoshiaki Yamamoto, Junji Yatsuda, Mototsugu Shimokawa, Nakanori Fuji, Akihiko Aoki, Kazuo Oba

Int J Clin Oncol· January 2021

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Prognostic value of risk stratification using blood parameters for nivolumab in Japanese patients with metastatic renal-cell carcinoma.
Yoshiaki Yamamoto, Hideyasu Matsuyama, Hiroaki Matsumoto, Shigeru Sakano, Nakanori Fuji, Kazuo Oba

Jpn J Clin Oncol· February 2020

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Transperitoneal versus retroperitoneal laparoscopic adrenalectomy for large pheochromocytoma: Comparative outcomes.
Koji Shiraishi, Seiji Kitahara, Hideaki Ito, Kazuo Oba, Chietaka Ohmi

Int J Urol· February 2019

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Impact of variant histology on disease aggressiveness and outcome after nephroureterectomy in Japanese patients with upper tract urothelial carcinoma.
Shigeru Sakano, Hideyasu Matsuyama, Yoriaki Kamiryo, Shigeaki Hayashida, Norio Yamamoto, Kazuo Oba

Int J Clin Oncol· April 2015

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Haploinsufficiency of 8p22 may influence cancer-specific survival in prostate cancer.
Hideyasu Matsuyama, Kazuo Oba, Kenji Matsuda, Satoru Yoshihiro, Manabu Tsukamoto

Cancer Genet Cytogenet· April 2007

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Allelic loss of 3p25 associated with alterations of 5q22.3 approximately q23.2 may affect the prognosis of conventional renal cell carcinoma.
Kazuhiro Nagao, Shiro Yamaguchi, Hideyasu Matsuyama, Yoshihito Korenaga, Hiroshi Hirata, Kazuo Oba

Cancer Genet Cytogenet· July 2005

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Clinical significance of allelic loss of chromosome region 5q22.3 approximately q23.2 in nonpapillary renal cell carcinoma.
Kazuhiro Nagao, Satoru Yoshihiro, Hideyasu Matsuyama, Shiro Yamaguchi, Kazuo Oba

Cancer Genet Cytogenet· July 2002

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Numerical aberrations of chromosome 9 in bladder cancer. A possible prognostic marker for early tumor recurrence.
Manabu Tsukamoto, Hideyasu Matsuyama, Kazuo Oba, Satoru Yoshihiro, Mutsuo Takahashi

Cancer Genet Cytogenet· April 2002

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