Cancer diagnosis & prognosis最新文献

{"title":"Third Liver Resection for Re-recurrent Hepatocellular Carcinoma: Assessment of the Prognostic Factors of Long-term Survival.","authors":"Mayuko Kori, Kei Shimada, Takuya Hashimoto","doi":"10.21873/cdp.10426","DOIUrl":"10.21873/cdp.10426","url":null,"abstract":"<p><strong>Background/aim: </strong>Second hepatic resection is a well-established and effective treatment for recurrent hepatocellular carcinoma (HCC). Despite this, the recurrence rate of HCC remains high. The efficacy of third liver resection for re-recurrent HCC is uncertain, and prognostic factors affecting survival after third hepatectomy have not been comprehensively evaluated. This study aimed to investigate the short- and long-term outcomes of third liver resection for re-recurrent HCC and identify prognostic factors affecting survival.</p><p><strong>Patients and methods: </strong>In total, 27 patients who underwent three liver resections for primary, recurrent, and re-recurrent HCC were retrospectively reviewed. The prognostic factors of long-term survival were evaluated using clinical data including those of previous liver resections.</p><p><strong>Results: </strong>No cases of perioperative mortality after third liver resection for re-recurrent HCC were found. The median overall survival and disease-free survival were 38.3 and 5.8 months, respectively. The 5-year overall survival and disease-free survival rates were 56.8% and 10.9%, respectively. Clinical parameters such as tumor marker level, primary tumor size, and surgical interval of the third liver resection and of the first and second surgeries were significantly associated with long-term survival.</p><p><strong>Conclusion: </strong>The survival rate of third liver resection for re-recurrent HCC in our study was similar to that reported for second and third hepatectomies in previous studies. Clinical information on previous surgeries could be a useful determinant of third liver resection for re-recurrent HCC.</p>","PeriodicalId":72510,"journal":{"name":"Cancer diagnosis & prognosis","volume":"5 2","pages":"162-170"},"PeriodicalIF":0.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11871853/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143544742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive Analysis of Osteosarcoma Referral Letters: Insights into Medical Collaboration and Diagnostic Practices at Our Hospital.","authors":"Kazuhiko Hashimoto, Shunji Nishimura, Koji Goto","doi":"10.21873/cdp.10435","DOIUrl":"10.21873/cdp.10435","url":null,"abstract":"<p><strong>Background/aim: </strong>This study aimed to assess the status of medical collaboration between our hospital and affiliated institutions based on referral letters for patients with osteosarcoma.</p><p><strong>Patients and methods: </strong>A single-center retrospective analysis of osteosarcoma referrals was conducted between September 1, 2012, and March 31, 2023. Fourteen patients were included (eight males, six females; mean age=28 years, range=8-74 years) each with a pathologically confirmed diagnosis of a malignant soft-tissue tumor and available referral documentation from previous physicians. Survey parameters included type of referral hospital, geographical area, and medical department of the referral hospital, as well as imaging and blood tests conducted and the corresponding findings.</p><p><strong>Results: </strong>Patients were referred from various medical institutions: Six from general hospitals, six from clinics, one from a university hospital, and one from a clinic with beds. Most patients (n=10) were from southern Osaka. Among the referrals, 11 patients were referred to orthopedics, two to surgery, and one to pediatrics. Analysis of imaging studies showed eight patients with only radiographs; three patients with radiographs, computed tomography (CT), and magnetic resonance imaging (MRI); one patient with only CT; one patient with only MRI; and one patient with both radiographs and CT. Imaging findings included indications of suspected malignancy in 12 patients and suspected bone tumors in two. Blood tests were conducted in two patients, namely alkaline phosphatase and C-reactive protein, and alkaline phosphatase and lactate dehydrogenase, respectively. Blood tests were not performed in the remaining 12 patients.</p><p><strong>Conclusion: </strong>Referrals for patients with osteosarcoma at our facility and related facilities were well documented, ensuring informative content and adequate medical coordination.</p>","PeriodicalId":72510,"journal":{"name":"Cancer diagnosis & prognosis","volume":"5 2","pages":"238-243"},"PeriodicalIF":0.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11871865/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143544764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dose Reduction of <i>EGFR</i>-TKIs for <i>EGFR</i>-positive Non-small Cell Lung Cancer: A Retrospective Study.","authors":"Akira Mochizuki, Hiroaki Matsumoto, Yosuke Maezawa, Shinichiro Okauchi, Gen Ohara, Shinya Sato, Kunihiko Miyazaki, Takahide Kodama, Hiroaki Satoh, Toshihiro Shiozawa, Yohei Yatagai, Nobuyuki Hizawa","doi":"10.21873/cdp.10431","DOIUrl":"10.21873/cdp.10431","url":null,"abstract":"<p><strong>Background/aim: </strong>The <i>epidermal growth factor receptor (EGFR)</i> gene was the first driver gene discovered in non-small cell lung cancer (NSCLC), and the introduction of tyrosine kinase inhibitors (TKIs) has improved patient prognosis, but often at reduced doses. Conventional dose determination methods for cytotoxic antitumor drugs were not applicable to <i>EGFR</i>-TKIs and were determined differently. The purpose of this study was to determine the characteristics of patients undergoing <i>EGFR</i>-TKI dose reduction, and the impact of such dose reduction on survival.</p><p><strong>Patients and methods: </strong>Patient characteristics, treatment, overall survival, and progression-free survival of patients with <i>EGFR</i> mutation-positive NSCLC treated with <i>EGFR</i>-TKIs between August 2008 and April 2024 at two hospitals were retrospectively evaluated.</p><p><strong>Results: </strong>Of 165 patients, 67.3% received TKI dose reduction; patients who received TKI dose reduction had a smaller body surface area (<i>p</i>=0.029), which was more common in patients with better performance status (<i>p</i>=0.026). Side effects, especially diarrhea and rash, were the main reasons for this. Overall survival was significantly longer in the dose reduction group than in the recommended dose group (<i>p</i>=0.011). Multivariate analysis showed that TKI dose reduction was a favorable factor with a hazard ratio of 0.68 (<i>p</i>=0.046).</p><p><strong>Conclusion: </strong>Reducing TKI dose is an option for patients with <i>EGFR</i>-mutated NSCLC, especially in elderly or underweight patients who develop adverse effects, and there is no reason to hesitate to reduce the TKI dose in these patients.</p>","PeriodicalId":72510,"journal":{"name":"Cancer diagnosis & prognosis","volume":"5 2","pages":"207-215"},"PeriodicalIF":0.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11871860/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143544765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outcomes of Liposomal Irinotecan With 5-FU and Leucovorin in Patients With Metastatic Pancreatic Cancer and Borderline Performance Status.","authors":"Chieh-Ying Chang, Tai-Jan Chiu, Yen-Yang Chen, Jen-Shi Chen, Wen-Chi Chou","doi":"10.21873/cdp.10430","DOIUrl":"10.21873/cdp.10430","url":null,"abstract":"<p><strong>Background/aim: </strong>This study investigated the effectiveness and safety of liposomal irinotecan plus 5-fluorouracil (5-FU) and leucovorin (LV) as a second-line treatment for patients with pancreatic ductal adenocarcinoma (PDAC) and borderline performance status. These patients are often excluded from clinical trials, but may still receive this therapy due to limited alternatives.</p><p><strong>Patients and methods: </strong>A retrospective analysis was conducted on 31 patients with metastatic PDAC and a Karnofsky Performance Status (KPS) of 40-60, who received liposomal irinotecan plus 5-FU/LV at two institutions between 2018 and 2019 in Taiwan. The NAPOLI nomogram was utilized to stratify patients into prognostic groups for survival comparison, with the good prognostic group defined as having total NAPOLI nomogram points ≥ the median value, and the poor prognostic group defined as having total NAPOLI nomogram points < the median value.</p><p><strong>Results: </strong>The median overall survival (OS) for the entire cohort was 4.2 months [95% confidence interval (CI)=3.0-5.3 months]. Patients in the NAPOLI nomogram's good prognostic group had a median OS of 4.9 months (95%CI=3.7-6.1 months), compared to 2.0 months (95%CI=1.5-2.4 months) in the poor prognostic group (<i>p</i>=0.014). Tumor response rates to liposomal irinotecan + 5-FU/LV were partial response in 3%, stable disease in 23%, and progressive disease in 74%, with significant differences in disease progression rates between good (56%) and poor (93%) prognostic groups (<i>p</i>=0.011). The most common grade 3 or 4 chemotherapy-related adverse events included anemia (26%), neutropenia (23%), non-neutropenic infection (19%), mucositis (13%), diarrhea (10%), and fatigue (3%).</p><p><strong>Conclusion: </strong>Liposomal irinotecan plus 5-FU/LV regimen is a feasible second-line treatment option for PDAC patients with borderline performance status, with a safety profile consistent with clinical trial findings.</p>","PeriodicalId":72510,"journal":{"name":"Cancer diagnosis & prognosis","volume":"5 2","pages":"198-206"},"PeriodicalIF":0.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11871866/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143544773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"External Validation of an Extended Prognostic Assessment Model in Patients With Brain Metastases from Small-cell Lung Cancer.","authors":"Carsten Nieder, Ilinca Popp, Anca-Ligia Grosu","doi":"10.21873/cdp.10427","DOIUrl":"10.21873/cdp.10427","url":null,"abstract":"<p><strong>Background/aim: </strong>Recently, the small-cell lung cancer (SCLC) grade model for patients with brain metastases was developed by a Japanese group. It includes sex, performance status, number of brain metastases, primary tumor control and presence of extracranial metastases. The aim of the present study was to validate this prognostic score in a European cohort of patients.</p><p><strong>Patients and methods: </strong>The retrospective validation study included 189 patients from two centers in Germany and Norway. Survival according to the SCLC grade score was evaluated. Additional prognostic factors were analyzed.</p><p><strong>Results: </strong>Median survival was 7.5 months. The 3-tiered SCLC grade score based on the sum of adverse prognostic features was significantly associated with survival (<i>p</i><0.001): A higher point sum resulted in shorter survival. However, in our validation cohort, age affected survival to the same degree as several parameters that were part of the score.</p><p><strong>Conclusion: </strong>This validation study supports the international applicability of the SCLC grade model. Age, which has also been identified as a relevant prognostic factor in other previous studies (including the SCLC Graded Prognostic Assessment), may deserve consideration when trying to optimize survival prediction. Given that different studies identified different age limits, <i>e.g.</i>, 70 or 75 years, merged databases are needed to provide definitive conclusions.</p>","PeriodicalId":72510,"journal":{"name":"Cancer diagnosis & prognosis","volume":"5 2","pages":"171-178"},"PeriodicalIF":0.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11871855/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143544767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tumor β-Catenin Expression Associated With Poor Prognosis to Anti-PD-1 Antibody Monotherapy in Non-small Cell Lung Cancer.","authors":"Satoshi Muto, Yuki Ozaki, Hikaru Yamaguchi, Masayuki Watanabe, Naoyuki Okabe, Yuki Matsumura, Kazuyuki Hamada, Hiroyuki Suzuki","doi":"10.21873/cdp.10409","DOIUrl":"https://doi.org/10.21873/cdp.10409","url":null,"abstract":"<p><strong>Background/aim: </strong>Tumor intrinsic β-catenin signaling has been reported to influence the tumor immune microenvironment and may be a resistance mechanism to immune checkpoint inhibitors in various cancers.</p><p><strong>Patients and methods: </strong>We studied the association between tumor β-catenin expression and survival in 50 patients with non-small cell lung cancer (NSCLC) treated with anti-programmed death-1 antibody monotherapy. Tumor β-catenin expression was evaluated by immunohistochemistry.</p><p><strong>Results: </strong>Patients with positive tumor β-catenin expression (20% of all patients) had worse progression-free survival and overall survival compared with those with negative tumor β-catenin expression. Patients with positive tumor β-catenin expression had reduced CD8⁺ cell and CD11c⁺ cell infiltration into tumor nests than those with negative tumor β-catenin expression. RT-PCR of tumor tissue revealed that patients with positive tumor β-catenin expression showed lower gene expression of CD8A, CD4, IFN-γ, BATF3, and CCL4. Knockdown of CTNNB1 tended to increase CCL4 expression, likely mediated by ATF3, in a lung cancer cell line with positive β-catenin expression.</p><p><strong>Conclusion: </strong>NSCLC patients with positive tumor β-catenin expression that were treated with anti-programmed death-1 antibody monotherapy had poor prognosis.</p>","PeriodicalId":72510,"journal":{"name":"Cancer diagnosis & prognosis","volume":"5 1","pages":"32-41"},"PeriodicalIF":0.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11696345/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142933776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High Tumoral KPNA2 Expression Is a PotentialBiomarker for Poor Prognosis in Advanced Neuroblastoma Patients.","authors":"Sayaka Otake, Kenjiro Ogushi, Gendensuren Dorjkhorloo, Takehiko Yokobori, Akira Nishi, Hiroyuki Kuwano, Hiroshi Saeki, Ken Shirabe","doi":"10.21873/cdp.10404","DOIUrl":"https://doi.org/10.21873/cdp.10404","url":null,"abstract":"<p><strong>Background/aim: </strong>Karyopherin alpha 2 (KPNA2) has been reported to be associated with cancer aggressiveness and treatment resistance via transporting several cargo proteins into the nucleus, such as cancer-promoting E2F and DNA repair-related MRN complex. Recent studies have highlighted the KPNA2 functions in tumorigenesis and the progression of various cancers. However, the importance of KPNA2 expression has yet to be elucidated in clinical neuroblastoma patients. This study aimed to analyze the clinical impact of KPNA2 expression in neuroblastoma.</p><p><strong>Materials and methods: </strong>KPNA2 expression in 81 resected neuroblastoma sections was examined using immuno-histochemical staining. The significance and prognostic value of tumoral KPNA2 expression were analyzed using our cohort and R2 database.</p><p><strong>Results: </strong>The KPNA2 was expressed in the nucleus of neuroblastoma cells. The expression level of nuclear KPNA2 was not associated with clinicopathological factors in neuroblastoma. Among our cohort (n=81), non-radically resected neuroblastoma patients (n=37) with high KPNA2 expression had poorer prognoses than those with low KPNA2 expression. The R2 database analysis validated that the high KPNA2 expression was related to the poor prognosis in the large-scale neuroblastoma cohort.</p><p><strong>Conclusion: </strong>KPNA2 expression evaluation in neuroblastoma is a promising indicator of prognosis in non-curative resected cases. KPNA2 targeting may be a promising therapeutic strategy against advanced neuroblastoma.</p>","PeriodicalId":72510,"journal":{"name":"Cancer diagnosis & prognosis","volume":"5 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11696343/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142933731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Diabetes on Outcomes in Patients With Incurable/Unresectable and Advanced/Recurrent Colorectal Cancer Receiving mFOLFOX6.","authors":"Mai Ikemura, Masaki Hirabatake, Megumi Aburaya, Hiroaki Ikesue, Hisateru Yasui, Nobuyuki Muroi, Tohru Hashida","doi":"10.21873/cdp.10410","DOIUrl":"https://doi.org/10.21873/cdp.10410","url":null,"abstract":"<p><strong>Background/aim: </strong>The high mortality rate associated with colon cancer in patients with diabetes is well-established; however, the underlying mechanisms have not been fully elucidated. Here, we investigated the efficacy of modified FOLFOX6 (mFOLFOX6) therapy, which is frequently used in colon cancer treatment, in patients with and without comorbid diabetes.</p><p><strong>Patients and methods: </strong>The participants in this retrospective cohort study received mFOLFOX6 therapy as a first-line treatment for incurable/ unresectable and advanced/recurrent colon cancer. We compared patient background characteristics; number of mFOLFOX6 courses; total dose of each drug; reasons for dose reduction, deferment, or discontinuation; and survival time.</p><p><strong>Results: </strong>Data of six patients with diabetes and 26 without diabetes were assessed. There was no significant difference in background characteristics between the patient groups, with the exception of blood glucose levels. There was no significant difference in the planned number of mFOLFOX6 courses between the groups; however, the total number of completed courses was significantly lower in patients with diabetes than in those without diabetes. Discontinuation rates due to adverse events were similar between the groups; however, discontinuation due to progressive disease or death was significantly higher in patients with diabetes than in those without diabetes. No significant differences were observed in the total dose of each anticancer drug or survival time between the groups.</p><p><strong>Conclusion: </strong>mFOLFOX6 may not have sufficient therapeutic effects in patients with diabetes. Therefore, in patients with concurrent diabetes and colon cancer, alternative therapeutic options for cancer treatment should be considered.</p>","PeriodicalId":72510,"journal":{"name":"Cancer diagnosis & prognosis","volume":"5 1","pages":"42-48"},"PeriodicalIF":0.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11696341/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142933623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical and Pathological Analysis of Perianal Paget's Disease: A Case Report and Review of 89 Cases.","authors":"Kae Ishii, Hidekazu Takahashi, Hiromi Tsuji, Takayoshi Ishihara, Yuka Iwami, Watsapol Juavijitjan, Mitsuki Yokota, Shohei Takaichi, Masakatsu Paku, Kazuya Iwamoto, Tomofumi Ohashi, Yujiro Nakahara, Tadafumi Asaoka, Chu Matsuda, Kazuhiro Nishikawa, Takeshi Omori","doi":"10.21873/cdp.10411","DOIUrl":"https://doi.org/10.21873/cdp.10411","url":null,"abstract":"<p><strong>Background/aim: </strong>Perianal Paget's disease (PPD) is an intraepithelial invasion of the perianal skin that is frequently associated with anorectal carcinoma. Rectal canal carcinoma with Pagetoid spread (PS) is a relatively rare disease, and few reports on its outcomes are available. The relatively rare nature of this disease makes the development of treatment recommendations difficult. This study aimed to clarify the characteristics of the disease and factors related to prognosis. We present a case report and review of 89 cases, including those from the existing literature and our own experience.</p><p><strong>Case report: </strong>The patient was an 81-year-old man who was referred to our hospital for surgery after endoscopic examination of the lower gastrointestinal tract revealed cancer of the anal canal with PS. Physical examination revealed erythema and erosions around the anus. Lower gastrointestinal endoscopy revealed an erythematous area and a continuous raised lesion in the anal canal. We diagnosed the patient with anal canal carcinoma with PS, and robot-assisted abdominoperineal resection was performed.</p><p><strong>Conclusion: </strong>Our findings indicate that the five-year survival rate for PPD patients was 63%, comparable to that of anal canal cancer without PS. The histological type and presence of lymph node metastasis may be related to the prognosis. The study suggests that early-stage patients with favorable histological types and no lymph node involvement may benefit from less invasive treatment options, such as endoscopic submucosal dissection.</p>","PeriodicalId":72510,"journal":{"name":"Cancer diagnosis & prognosis","volume":"5 1","pages":"49-55"},"PeriodicalIF":0.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11696335/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142932774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prostate Cancer Patient With Lymph-node Metastasis Treated Only With Methionine Restriction Has Stable Disease for Two Years Demonstrated With PET/CT and PSMA-PET Scanning and PSA Testing.","authors":"Sei Morinaga, Qinghong Han, Kohei Mizuta, Byung Mo Kang, Norio Yamamoto, Katsuhiro Hayashi, Hiroaki Kimura, Shinji Miwa, Kentaro Igarashi, Takashi Higuchi, Hiroyuki Tsuchiya, Satoru Demura, Robert M Hoffman","doi":"10.21873/cdp.10408","DOIUrl":"https://doi.org/10.21873/cdp.10408","url":null,"abstract":"<p><strong>Background/aim: </strong>Metastatic prostate cancer is a recalcitrant disease. Our laboratory has previously treated prostate-cancer patients with methionine restriction effected by a low methionine diet and oral recombinant methioninase (o-rMETase), both alone and in combination with other agents. The present case is a 66-year-old patient who had a radical prostatectomy in 2019 with a Gleason score 3+3 and 3+4. The patient subsequently was treated with immunotherapy in 2021 and salvage proton-beam therapy in 2022, and subsequently treated only with o-rMETase and a low-methionine diet. The aim of the present study was to determine the long-term efficacy of methionine restriction on the patient's prostate cancer.</p><p><strong>Case report: </strong>Starting in September 2022, the patient started methionine restriction with a low methionine-diet and o-rMETase, twice a day, after meals, at 250 units/dose. Since the start of methionine restriction, the patients' prostate-specific antigen (PSA) has remained stable, under 2 ng/ml. Positron emission tomography/computed tomography (PET/CT) and prostate specific membrane antigen (PSMA)-PET imaging indicated in September 2023 a right pelvic-side-wall metastatic lymph node that was stable when the PSMA-PET scan was repeated in March 2024, with the standardized uptake value (SUV) decreasing from 19.39 to 14.98. A very small possible metastatic external-iliac lymph node was detected in March 2024. Thus, the lymph-node metastases were stable and did not increase.</p><p><strong>Conclusion: </strong>During the time the patient was on methionine restriction alone, effected by a low-methionine diet and o-rMETase, the metastatic prostate cancer did not progress. Further clinical studies of methionine restriction and metastatic prostate cancer are needed, including randomized clinical trials.</p>","PeriodicalId":72510,"journal":{"name":"Cancer diagnosis & prognosis","volume":"5 1","pages":"27-31"},"PeriodicalIF":0.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11696347/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142933692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}