Yun-Gyoo Lee, Tae-Hwan Kim, Du-Young Kang, Ji Hyun Park, Kyoungmin Lee, Juwhan Choi, Sung Yong Lee, Ji Won Lee, Yoon Ji Choi, Ah-reum Lim, Jung Yoon Choi, Jung Sun Kim, Hee Kyung Ahn, Jin-Hyuk Choi, Eun Joo Kang
Received May 10, 2026 Accepted August 13, 2026 Published online August 14, 2026
Purpose
Chemoimmunotherapy has improved outcomes in extensive-stage small-cell lung cancer (ES-SCLC), but its benefit in older adults remains uncertain because this population is underrepresented in clinical trials. We evaluated the real-world efficacy of first-line atezolizumab plus etoposide-carboplatin according to age in patients with ES-SCLC.
Materials and Methods
We conducted a multicenter retrospective study across seven Korean institutions and identified patients with ES-SCLC treated between 2016 and 2022 with atezolizumab plus etoposide-carboplatin or etoposide-platinum chemotherapy alone. Patients with recurrence after prior limited-stage disease or incomplete records were excluded. End points were overall response rate (ORR), progression-free survival (PFS), and overall survival (OS), assessed using Kaplan-Meier methods and Cox regression models.
Results
Among 550 identified patients, 538 were included: 247 received atezolizumab plus chemotherapy and 291 received chemotherapy alone. Overall, 111 patients (20.2%) were aged 75–80 and 57 (10.4%) were older than 80years. In the overall population, atezolizumab was associated with improved PFS (hazard ratio [HR], 0.78; 95% CI, 0.65 to 0.93; p=0.006) and OS (HR, 0.76; 95% CI, 0.63 to 0.93; p=0.006). Age-stratified analyses showed significant PFS benefit only in patients aged 70–75 (HR, 0.67; p=0.049) and significant OS benefit only in patients aged 65–70 (HR, 0.65; p=0.044). Beyond 75 years, neither PFS nor OS was significantly improved. Patients aged ≥75years also had lower ORR and more progressive or non-evaluable disease compared with <75years.
Conclusion
The clinical benefit of adding atezolizumab appears attenuated in ES-SCLC patients age 75 years or older, supporting careful selection and age-adapted treatment strategies.
Jwa Hoon Kim, Sang Joon Shin, Woo Kyun Bae, Se Hyun Kim, Jin Young Kim, Hyeon-Su Im, In-Ho Kim, Il Hwan Kim, Kwonoh Park, Eo Jin Kim, Mihong Choi, Joo Han Lim, Hyunho Kim, Kyoungmin Lee, Hyo-Jeong Kim, Jungmin Jo, Hyo Jin Lee, Dalyong Kim, Byeong Seok Sohn, Inkeun Park, Ji Hyun Park
Received August 8, 2025 Accepted October 11, 2025 Published online October 13, 2025
Purpose We investigated the real-world efficacy of first-line nivolumab plus ipilimumab (NI) and its predictive clinicopathological biomarkers in patients with advanced renal cell carcinoma (aRCC).
Materials and Methods We retrospectively analyzed 466 patients with aRCC who started first-line NI between 2019 and 2023 at 21 Korean tertiary hospitals. The primary outcome was objective response rate (ORR). Secondary outcomes were duration of response (DoR), progression-free survival (PFS), overall survival (OS), and identification of practical clinicopathological biomarkers.
Results Median age of patients was 65 years, and 77.7% were male. ORR was 44.8% including 5.2% of complete response, and median DoR was 39.8 months. Male sex and lung metastasis were predictive markers of objective response, and achieving complete response was significantly associated with a longer DoR (p=0.03). With a median follow-up duration of 23.7 months, the median PFS and OS were 11.5 and 44.2 months, respectively. Full exposure to 4 cycles of ipilimumab was significantly associated with better PFS and OS. Durable response could significantly predict better OS, whereas multiple metastatic sites (≥ 4) and poor IMDC risk were two independent predictors for inferior OS. Among the 50 patients who completed 2 years of NI treatment, continuation of nivolumab beyond 2 years has marginally improved OS (p=0.09).
Conclusion First-line NI showed comparable and competent efficacy in Korean patients with aRCC. We suggest completing full exposure to ipilimumab and durable response as practical predictors of enriched benefits of NI in our real-world.
Sora Kang, Hyungwoo Cho, Shin Kim, Kyoungmin Lee, Eun Hee Kang, Jung Sun Park, Yoon Sei Lee, Chan-Sik Park, Heounjeong Go, Jooryung Huh, Jin Sook Ryu, Sang-Wook Lee, Seok Jin Kim, Won Seog Kim, Sang Eun Yoon, Young Hyeh Ko, Cheolwon Suh
Cancer Res Treat. 2023;55(1):314-324. Published online March 31, 2022
Purpose Prognostic Index for Natural Killer Lymphoma (PINK) is the most widely accepted prognostic model for patients withextranodal natural killer/T-cell lymphoma (ENKTL) treated with non-anthracycline–based therapy. We aimed to evaluate the prognostic implications of serum β-2 microglobulin (β2M) in the context of PINK and proposed a new prognostic model.
Materials and Methods A total of 138 patients who were newly diagnosed with ENKTL and treated with non-anthracycline-based chemotherapy were identified. The cut-off value of high serum β2M was calculated by maximal-chi square methods (4.1 mg/L). A new prognostic model incorporating serum β2M into PINK was proposed and validated in an independent validation cohort (n=88).
Results The patients’ median age was 53.5 years (range, 19 to 80 years). Patients with high serum β2M levels had significantly worse overall survival (OS) and progression-free survival (PFS). In multivariate analysis, high serum β2M was an independent adverse prognostic factor for OS. A new PINK-B (Prognostic Index for Natural Killer Lymphoma-serum β-2 microglobulin) model stratifiedpatients into three groups with distinct OS and PFS in the training cohort (3-year OS, 84.1% [95% confidence interval, 75.1 to 94.2], 46.8% [36.1 to 60.8] and 17.6% [6.3 to 49.2] for the low-, intermediate, and high-risk groups, respectively; 3-year PFS, 70.6% [59.4 to 83.8], 35.9% [25.9 to 49.8], and 7.35% [1.1 to 46.7] for the low-, intermediate-, and high-risk groups, respectively). The PINK-B model was further validated in an independent cohort.
Conclusion Serum β2M is an independent prognostic factor for ENKTL patients. The new serum β2M-based prognostic model may be useful for identifying ultra-high-risk patients, and it can easily be adopted into daily clinical practice.
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Cancer Res Treat. 2021;53(3):847-856. Published online December 17, 2020
Purpose We aimed to investigate the prognostic value of serum β2-microglobulin for patients with Burkitt lymphoma (BL) and to propose a risk-stratifying classification system.
Materials and Methods A prospective registry-based cohort study of BL patients treated with dose-intensive or effective dose-adjusted chemotherapies (n=81) was conducted. Survival outcomes were compared based on previously reported risk groups and/or serum β2-microglobulin levels. A risk-stratifying classification system incorporating serum β2-microglobulin levels was proposed and validated in an independent validation cohort (n=60).
Results The median age was 47 years, and 57 patients (70.4%) were male. Patients with high serum β2-microglobulin levels (> 2 mg/L) had significantly worse progression-free survival (PFS) and overall survival (OS) (p < 0.01 for both). Serum β2-microglobulin levels further stratified patients in the low-risk and high-risk groups in terms of PFS (p=0.010 and p=0.044, respectively) and OS (p=0.014 and p=0.026, respectively). Multivariate analyses revealed that a high serum β2-microglobulin level (> 2 mg/L) was independently associated with a shorter PFS (hazards ratio [HR], 3.56; p=0.047) and OS (HR, 4.66; p=0.043). The new classification system incorporating the serum β2-microglobulin level allowed the stratification of patients into three distinct risk subgroups with 5-year OS rates of 100%, 89.5%, and 62.5%. In an independent cohort of BL, the system was validated by stratifying patients with different survival outcomes.
Conclusion Serum β2-microglobulin level is an independent prognostic factor for BL patients. The proposed β2-microglobulin–based classification system could stratify patients with distinct survival outcomes, which may help define appropriate treatment approaches for individual patients.
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Purpose
Since the introduction of nab-paclitaxel plus gemcitabine (nab-P+GEM) as first-line (1L) treatment for metastatic pancreatic adenocarcinoma (mPDAC), optimal second-line (2L) chemotherapy after progression is unclear. We assessed clinical outcomes of 2L chemotherapy for disease that progressed on 1L nab-P+GEM.
Materials and Methods
Among the 203 patients previously treated with 1L nab-P+GEM for mPDAC at Asan Medical Center, between February and December 2016, records of 120 patients receiving 2L chemotherapy after progression on nab-P+GEM were retrospectively reviewed. The response rate and survival were evaluated along with analysis of prognostic factors.
Results
Fluoropyrimidine-oxaliplatin doublets (FOLFOX or XELOX) were used in 78 patients (65.0%), fluoropyrimidine monotherapy in 37 (30.8%), and liposomal irinotecan plus fluorouracil in two (1.7%). The median progression-free survival (PFS) and overall survival (OS) were 3.29 months and 7.33 months from the start of 2L therapy. Fluoropyrimidine-oxaliplatin regimens and fluoropyrimidine monotherapy did not yield significantly different median PFS (2.89 months vs. 3.81 months, p=0.40) or OS (7.04 months vs. 7.43 months, p=0.86). A high neutrophil-lymphocyte ratio (> 2.2) and a short time to progression with 1L nab-P+GEM (< 6.4 months) were independent prognostic factors of poor OS with 2L therapy.
Conclusion
2L fluoropyrimidine-oxaliplatin doublets and fluoropyrimidine monotherapy after failure of 1L nab-P+GEM had modest efficacy, with no differences in treatment outcomes between them. Further investigation is warranted for the optimal 2L chemo-regimens and sequencing of systemic chemotherapy for patients with mPDAC.
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Purpose
Glioblastoma (GBM) is classified as one of the most aggressive and lethal brain tumor. Great strides have been made in understanding the genomic and molecular underpinnings of GBM, which translated into development of new therapeutic approaches to combat such deadly disease. However, there are only few therapeutic agents that can effectively inhibit GBM invasion in a clinical framework. In an effort to address such challenges, we have generated anti-SEMA3A monoclonal antibody as a potential therapeutic antibody against GBM progression.
Materials and Methods
We employed public glioma datasets, Repository of Molecular Brain Neoplasia Data and The Cancer Genome Atlas, to analyze SEMA3AmRNA expression in human GBM specimens. We also evaluated for protein expression level of SEMA3A via tissue microarray (TMA) analysis. Cell migration and proliferation kinetics were assessed in various GBM patient-derived cells (PDCs) and U87-MG cell-line for SEMA3A antibody efficacy. GBM patient-derived xenograft (PDX) models were generated to evaluate tumor inhibitory effect of anti-SEMA3A antibody in vivo.
Results
By combining bioinformatics and TMA analysis, we discovered that SEMA3A is highly expressed in human GBM specimens compared to non-neoplastic tissues. We developed three different anti-SEMA3A antibodies, in fully human IgG form, through screening phage-displayed synthetic antibody library using a classical panning method. Neutralization of SEMA3A significantly reduced migration and proliferation capabilities of PDCs and U87-MG cell line in vitro. In PDX models, treatment with anti-SEMA3A antibody exhibited notable tumor inhibitory effect through down-regulation of cellular proliferative kinetics and tumor-associated macrophages recruitment.
Conclusion
In present study, we demonstrated tumor inhibitory effect of SEMA3A antibody in GBM progression and present its potential relevance as a therapeutic agent in a clinical framework.
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Here we report a case of a 76-year-old man with diffuse large B-cell lymphoma (DLBCL) with simultaneous involvement of the right breast and left testicle. The patient underwent complete resection of the involved testis, followed by immunochemotherapy with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone (R-CHOP) and prophylactic radiotherapy to the contralateral testis. Following this multimodal therapy, he achieved a complete response. This is a rare case of DLBCL involving both the breast and the testis in a male patient.
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