1.Efficacy and Safety of Ifosfamide and Mesna in Metastatic Castration-Resistant Prostate Cancer after Taxane-Based Chemotherapy and Novel Hormonal Therapy Failure
Chang Gon KIM ; Yeo Gyeong KO ; Jongjin YOON ; Chung LEE ; Seung Hoon BEOM ; Young-Deuk CHOI ; Woong Kyu HAN ; Won Sik HAM ; Hyunho HAN ; Jongsoo LEE ; Ji Eun HEO ; Daeseong KIM ; Eun Sil BAEK ; Sangwoo KIM ; Minsun JUNG ; Sang Joon SHIN
Cancer Research and Treatment 2026;58(2):603-612
Purpose:
Limited treatment options exist for patients with metastatic castration-resistant prostate cancer (mCRPC) after the failure of taxane-based chemotherapy and novel hormonal therapy. Here, we report the safety and efficacy of ifosfamide and mesna in patients with mCRPC after the failure of taxane-based chemotherapy and novel hormonal therapy (NCT06236789).
Materials and Methods:
Patients with histologically confirmed prostate cancer who had failed taxane-based chemotherapy and novel hormonal therapy received ifosfamide 2,500 mg/m2 and mesna 1,500 mg/m2 on days 1–3, repeated every 21 days. Safety, objective response rate, disease control rate, reduction in serum prostate-specific antigen (PSA) concentration by >50% (PSA50) or >90% (PSA90), radiographic progression-free survival (rPFS), and overall survival (OS) were analyzed.
Results:
A total of 47 patients with mCRPC were included in the study. The median number of lines of treatment was 5 (range, 3 to 7). All patients were previously administered docetaxel and novel hormonal therapies including abiraterone (51.1%) and/or enzalutamide (61.7%). Thirty-eight patients (80.9%) were administered cabazitaxel. The objective response and disease control rates were 21.3% and 80.9%, respectively. PSA50 and PSA90 were achieved in 31.9% and 10.6%, respectively. During a median follow-up duration of 54.3 months, rPFS and OS were 5.0 and 9.0 months, respectively. All the patients experienced treatment-related adverse events of any grades; however, no new safety signs were detected. Genomic biomarker analysis revealed that alterations in the TP53 pathway were associated with inferior rPFS and OS.
Conclusion
Ifosfamide and mesna showed appreciable efficacy and manageable safety profiles in heavily treated patients with mCRPC.
2.Decisional Trade-offs in Localized Prostate Cancer: A Prospective Cross-Sectional Study of Radical Prostatectomy, Radiation Therapy, and Active Surveillance
Hyunho HAN ; Youngdeuk CHOI ; Woong Kyu HAN ; Jihee JUNG ; Ayoung YOO ; Hyunji YOON ; Siyeong LEE ; Changhwa HYUN ; Woong Sub KOOM ; Ik Jae LEE ; Chan Woo WEE ; Jeongmi LEE ; Jae Young JEONG ; Hyung Ho LEE ; Young Ae KIM ; Jung Eun KIM ; Songhee EUN ; Sung Uk LEE ; Jinha JEONG ; Moonsoo RA
Journal of Urologic Oncology 2025;23(2):112-118
Purpose:
To evaluate patient‐reported experiences of 3 primary treatments for localized or locally advanced prostate cancer—radical prostatectomy (RP), radiation therapy (RT), and active surveillance (AS)—based on cross‐sectional data from a prospective registry, and to explore how these findings can inform a structured shared decision making (SDM) framework.
Materials and Methods:
Men with clinical stage cT3aN0M0 or lower were enrolled. Those who underwent RP or RT were surveyed 6–24 months posttreatment; men on AS had 6–60 months of follow‐up. All participants completed the EORTC QLQ‐PR25 (European Organization for Research and Treatment of Cancer Quality of Life Questionnaire - Prostate Cancer Module), capturing urinary, bowel, hormonal, and sexual function. The Kruskal‐Wallis test evaluated group differences, with significance set at p<0.05.
Results:
Among 542 patients, 435 underwent RP, 73 received RT (43% with androgen deprivation therapy), and 34 were on AS. RP patients reported higher rates of urinary incontinence and sexual dysfunction, whereas RT patients had more severe urinary irritative and bowel symptoms. AS generally preserved baseline sexual function but still involved some urinary complaints and anxiety regarding disease progression. These findings underscore the distinct trade‐offs among the 3 management strategies, emphasizing the importance of individualized SDM that accounts for functional priorities and patient values.
Conclusion
Each treatment modality poses unique impacts on quality of life. Incorporating these patient‐reported data into SDM discussions can improve alignment between clinical recommendations and patient preferences, potentially reducing decisional regret and enhancing long‐term outcomes.
3.Prognosis of Prostate Cancer With Mucinous Components: A Propensity Score-Matched Study
Jin Hyeok CHOI ; Hyunho HAN ; Jongsoo LEE ; Won Sik JANG ; Won Sik HAM ; Nam Hoon CHO ; Young Deuk CHOI ; Ji Eun HEO
Journal of Urologic Oncology 2025;23(3):219-226
Purpose:
Acinar adenocarcinoma with mucinous components is a rare histologic variant of prostate cancer (PC) that was previously reported to exhibit more aggressive behavior than typical PC. However, recent studies have suggested that PC with mucinous components may not be more aggressive and could even have a more favorable prognosis. Therefore, this study investigated the clinical outcomes of PC with mucinous components.
Materials and Methods:
We reviewed 7,983 patients with PC who underwent radical prostatectomy between 2006 and 2019. Propensity score matching and Kaplan-Meier analyses were performed to compare outcomes between patients with typical PC (group 1) and those with PC containing mucinous components (group 2). Matching variables included age, initial prostate-specific antigen level, clinical stage, and pathological Gleason score (GS). Biochemical recurrence-free survival (BCRFS) and cancer-specific survival (CSS) were analyzed using Cox regression analysis to identify survival predictors.
Results:
Sixty-one patients (0.76%) had PC with mucinous components. No significant differences were observed in matched variables between the 2 groups. Pathological stage, lymph node invasion (LNI), and positive surgical margin rates were also comparable. At a median follow-up of 53 (interquartile range, 24–80) months, biochemical recurrence occurred in 29 patients in group 1 and 24 in group 2 (p=0.361). Two patients in group 1 and 3 in group 2 died from PC (p>0.999). BCRFS and CSS did not differ significantly between the 2 groups (p=0.676 and p=0.458, respectively). High GS (≥8) (p=0.007) and pT3b stage (p=0.035) were independent risk factors for BCRFS, while LNI (p=0.001) predicted CSS. The presence of mucinous components was not a significant predictor of either BCRFS or CSS (p=0.127 and p=0.561, respectively).
Conclusion
PC with mucinous components demonstrated clinical outcomes comparable to those of typical PC and was not an independent prognostic factor for survival. PC with mucinous components may not be as aggressive as previously believed.
4.Serum Cocaine- and Amphetamine-Regulated Transcript Levels and Cooperativeness in Adolescents With Internet Gaming Disorder
Hyunho LEE ; Dong Huey CHEON ; Heejin LEE ; Arom PYEON ; Ji-Won CHUN ; Ji Hyun BACK ; Yae Eun PARK ; Hong CHOI ; Dai-Jin KIM ; Ji Eun LEE ; Jung-Seok CHOI
Psychiatry Investigation 2025;22(12):1416-1421
Objective:
Internet gaming disorder (IGD) is a growing problem, particularly among adolescents. Although cocaine- and amphetamine- regulated transcript (CART) has been explored as a potential biomarker for addictive disorders, its relationship with IGD remains poorly understood. This study investigated the differences in serum CART levels between adolescents with IGD and healthy controls (HCs) in order to find potential biomarkers as a therapeutic target in IGD. Additionally, we investigated correlations of serum CART levels with personality traits within the IGD group.
Methods:
A total of 114 adolescents participated in this study (43 in the IGD group and 71 in the HC group). Blood samples (10 mL) were collected and serum CART concentrations were determined using an enzyme-linked immunosorbent assay. Participants also completed the Junior Temperament and Character Inventory.
Results:
Serum CART levels in the IGD group were significantly lower than those in the HC group (p<0.05). IGD participants had higher novelty-seeking and harm-avoidance traits, accompanied by reduced persistence, self-directedness, and cooperativeness. Notably, a significant correlation emerged between serum CART levels and cooperativeness within the IGD group. Lower cooperativeness trait scores could indicate reduced social interaction.
Conclusion
The present findings suggest serum CART levels might serve as a neurobiological marker for cooperativeness function in adolescents with IGD.
5.Phosphodiesterase-5 Inhibitor Use in Robot Assisted Radical Prostatectomy Patients Is Associated with Reduced Risk of Death: A Propensity Score Matched Analysis of 1,058 Patients
Jongsoo LEE ; Hye Rim KIM ; Ji Eun HEO ; Won Sik JANG ; Kwang Suk LEE ; Sung Ku KANG ; Hyunho HAN ; Young Deuk CHOI
The World Journal of Men's Health 2023;41(4):892-899
Purpose:
We investigated whether the use of a phosphodiesterase-5 inhibitor (PDE5i) after robot assited radical prostatectomy has a survival benefit over non-use patients because there are controversial results on the association between PDE5i use and survival outcomes for prostate cancer patients in literature.
Materials and Methods:
We designed a retrospective, matched, large-sample cohort study of 5,545 patients who underwent robot assisted radical prostatectomy (RARP) during 2013–2021 in a single institute. The exclusion criteria was patients who were aged >70 years at surgery, American Society of Anesthesiologists (ASA) physical status classification grade 4 or 5, history of other malignancies, patients who started PDE5i 6 months after survery and patients with follow up period less than 24 months after surgery. Among the 1,843 included patients, 1,298 were PDE5i users, and 545 were PDE5i non-users. We performed propensity score matching (PSM) of PDE5i users (n=529) with non-users (n=529) by adjusting for the variables of age, Gleason grade group, pathological T stage, preoperative ASA physical status grade, and International Index of Erectile Function score.
Results:
There were no significant difference in patient characteristics according to PSM. Kaplan–Meier curve revealed the difference of overall survival for PDE5i users and non-users (clustered log-rank test p<0.05). In a stratified Cox regression analysis, PDE5i use after RARP was associated with improved overall survival and reduced risk of death (hazard ratio 0.43; confidence interval 0.24–0.79; p=0.007). The limitation of this study was that the indication for the prescription of PDE5i was not given.
Conclusions
PDE5i administration after RARP were associated with overall survival of patients with prostate cancer. A further randomized control trial may reveal whether routine use of PDE5i after prostatectomy can improve survival of prostate cancer patient.
6.Association between absolute lymphocyte count and overall mortality in patients with surgically resected gastric cancer
Se Jun PARK ; Jinsoo LEE ; Hyunho KIM ; Kabsoo SHIN ; MyungAh LEE ; Jae Myung PARK ; Myung-Gyu CHOI ; Cho Hyun PARK ; Kyo Young SONG ; Han Hong LEE ; In-Ho KIM
The Korean Journal of Internal Medicine 2021;36(3):679-688
Background/Aims:
Lymphocytes are an important component of the cell-mediated immune system. As lymphopenia is reportedly associated with poor prognoses in patients with various cancers, we investigated this notion in patients who underwent curative gastrectomy.
Methods:
We retrospectively analyzed the association between absolute lymphocyte count (ALC) and prognosis in patients with stage I–III gastric cancer who underwent curative surgical resection. Ever lymphopenic patients were defined as those with ALCs < 1,000/μL at any time post-diagnosis except within 30 days post-surgery. Adjusted multivariable regression models were used to evaluate the associations between lymphopenia and overall mortality, gastric cancer-specific mortality, and disease-free survival.
Results:
We investigated 1,222 patients diagnosed between January 2011 and December 2015. Fifty-six patients (4.6%) were lymphopenic at diagnosis and nearly one-quarter (24.8%) were ever lymphopenic with a mean minimum ALC of 640/μL. Older age (odds ratio [OR], 1.02) and higher stage (stage III vs. I; OR, 3.01) were positively associated with ever lymphopenia. On multivariable analysis, ever lymphopenia predicted higher overall mortality (hazard ratio [HR], 1.83; p = 0.008), higher gastric cancer-specific mortality (HR, 1.58; p = 0.048), and shorter disease-free survival (HR, 1.83; p = 0.006). The 5-year gastric cancer-specific mortality rates for ever- and never lymphopenic patients were 10.9% and 3.7%, respectively; their 5-year cumulative recurrence rates were 15.1% and 4.6%, respectively.
Conclusions
This study demonstrate that ever lymphopenia is independent prognostic factor for overall mortality and recurrence in patients with potentially curable gastric cancer; hence, ALCs may be a biomarker for predicting the prognoses of patients with stage I–III gastric cancer who had curative gastrectomy.
7.Association between absolute lymphocyte count and overall mortality in patients with surgically resected gastric cancer
Se Jun PARK ; Jinsoo LEE ; Hyunho KIM ; Kabsoo SHIN ; MyungAh LEE ; Jae Myung PARK ; Myung-Gyu CHOI ; Cho Hyun PARK ; Kyo Young SONG ; Han Hong LEE ; In-Ho KIM
The Korean Journal of Internal Medicine 2021;36(3):679-688
Background/Aims:
Lymphocytes are an important component of the cell-mediated immune system. As lymphopenia is reportedly associated with poor prognoses in patients with various cancers, we investigated this notion in patients who underwent curative gastrectomy.
Methods:
We retrospectively analyzed the association between absolute lymphocyte count (ALC) and prognosis in patients with stage I–III gastric cancer who underwent curative surgical resection. Ever lymphopenic patients were defined as those with ALCs < 1,000/μL at any time post-diagnosis except within 30 days post-surgery. Adjusted multivariable regression models were used to evaluate the associations between lymphopenia and overall mortality, gastric cancer-specific mortality, and disease-free survival.
Results:
We investigated 1,222 patients diagnosed between January 2011 and December 2015. Fifty-six patients (4.6%) were lymphopenic at diagnosis and nearly one-quarter (24.8%) were ever lymphopenic with a mean minimum ALC of 640/μL. Older age (odds ratio [OR], 1.02) and higher stage (stage III vs. I; OR, 3.01) were positively associated with ever lymphopenia. On multivariable analysis, ever lymphopenia predicted higher overall mortality (hazard ratio [HR], 1.83; p = 0.008), higher gastric cancer-specific mortality (HR, 1.58; p = 0.048), and shorter disease-free survival (HR, 1.83; p = 0.006). The 5-year gastric cancer-specific mortality rates for ever- and never lymphopenic patients were 10.9% and 3.7%, respectively; their 5-year cumulative recurrence rates were 15.1% and 4.6%, respectively.
Conclusions
This study demonstrate that ever lymphopenia is independent prognostic factor for overall mortality and recurrence in patients with potentially curable gastric cancer; hence, ALCs may be a biomarker for predicting the prognoses of patients with stage I–III gastric cancer who had curative gastrectomy.
8.Use of methylene blue in vasoplegic syndrome that developed during non-cardiac surgery: A case report
In Duk OH ; Eunsil SHIN ; Jong Mi JEON ; Hyunho WOO ; Jeong Hyun CHOI
Anesthesia and Pain Medicine 2019;14(4):460-464
BACKGROUND: Vasoplegic syndrome is an increasingly recognized disease in perioperative medicine and is characterized by severe hypotension, normal or elevated cardiac output, and decreased systemic vascular resistance. It occurs commonly after cardiopulmonary bypass but may also occur after other types of surgery.CASE: Vasoplegic syndrome developed in our patient during posterior lumbar interbody fusion because of administering nicardipine after phenylephrine. However, the blood pressure did not increase as expected despite simultaneous use of norepinephrine and vasopressin to increase the reduced systemic vascular resistance.CONCLUSIONS: We present a case of vasoplegic syndrome that developed during posterior lumbar interbody fusion and was treated successfully with methylene blue.
Blood Pressure
;
Cardiac Output
;
Cardiopulmonary Bypass
;
Humans
;
Hypotension
;
Methylene Blue
;
Nicardipine
;
Norepinephrine
;
Phenylephrine
;
Vascular Resistance
;
Vasoplegia
;
Vasopressins
9.Mechanical Thrombectomy with Solitaire Stent Retrieval for Acute Cardioembolic Stroke.
Hokyun HAN ; Hyunho CHOI ; Keun Tae CHO ; Byong Cheol KIM
Journal of Korean Neurosurgical Society 2017;60(6):627-634
OBJECTIVE: Few studies have reported the outcome of mechanical thrombectomy with Solitaire stent retrival (MTSR) in subtypes of acute ischemic stroke. The purpose of this study was to evaluate the efficacy and result of MTSR in acute cardioembolic stroke. METHODS: Twenty consecutive patients with acute cardioembolic stroke were treated by MTSR. The angiographic outcome was assessed by thrombolysis in cerebral infarction (TICI) grade. TICI grade 2a, 2b, or 3 with a measurable thrombus that was retrieved was considered as a success when MTSR was performed in the site of primary vessel occlusion, and TICI grade 2b or 3 was considered as a success when final result was reported. Clinical and radiological results were compared between two groups divided on the basis of final results of MTSR. Persistent thrombus compression sign on angiogram was defined as a stenotic, tapered arterial lumen whenever temporary stenting was performed. The clinical outcomes were assessed by the modified Rankin Scale (mRS) at 3 months. RESULTS: The failure rate of MTSR was 20% (4/20) and other modalities, such as permanent stenting, were needed. Final successful recanalization (TICI grade 2b or 3) was 80% when other treatments were included. The rate of good outcome (mRS≤2) was 35% at the 3-month follow-up. Failure of MTSR was significantly correlated with persistent thrombus compression sign (p=0.001). CONCLUSION: Some cases of cardioembolic stroke are resistant to MTSR and may need other treatment modalities. Careful interpretation of angiogram may be helpful to the decision.
Cerebral Infarction
;
Follow-Up Studies
;
Humans
;
Intracranial Embolism
;
Mechanical Thrombolysis
;
Stents*
;
Stroke*
;
Thrombectomy*
;
Thrombosis
10.Impact of Middle East respiratory syndrome outbreak on the use of emergency medical resources in febrile patients.
Hyunho JEONG ; Sikyoung JEONG ; Juseok OH ; Seon Hee WOO ; Byung Hak SO ; Jeong Hee WEE ; Ji Hoon KIM ; Ji Yong IM ; Seung Pill CHOI ; Kyoungnam PARK ; Byul Nim Hee CHO ; Sungyoup HONG
Clinical and Experimental Emergency Medicine 2017;4(2):94-101
OBJECTIVE: Outbreaks of transmissible respiratory infection are suspected to have significant effects on the health of pediatric and geriatric patients. The objective was to assess the impact of the Middle East respiratory syndrome (MERS) outbreak on the use of emergency resources. METHODS: An ecologic analysis of emergency department (ED) records between September and December 2015, was performed. Data was obtained from the National Emergency Department Information System database for Korea. All demographic and diagnostic data from patients presenting with febrile symptoms as a main complaint were collected. The data were compared to the equivalent period in the three years preceding the MERS outbreak in Korea. RESULTS: Following the MERS outbreak, there was an increase in overall ED visits by febrile patients and the proportion of visits by febrile patients, relative to total ED attendances. This effect was more prominent in the children under five years. The duration of the chief complaint before ED arrival and the length of ED stay were significantly increased among younger pediatric patients. Decreased body temperature on arrival was observed in younger pediatric patients. CONCLUSION: MERS outbreak appears to have had a significant effects on ED use by febrile patients. The use of emergency care services by pediatric patients makes them more vulnerable to an outbreak of a transmissable disease. An effective strategy to control emergency center visits by non-urgent febrile patients and provide proper medical services is urgently needed.
Body Temperature
;
Child
;
Coronavirus Infections*
;
Disease Outbreaks
;
Emergencies*
;
Emergency Medical Services
;
Emergency Service, Hospital
;
Fever
;
Humans
;
Information Systems
;
Korea
;
Middle East Respiratory Syndrome Coronavirus
;
Middle East*
;
Overall

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