Publications by authors named "Byoung-Chul Cho"

Purpose: Datopotamab deruxtecan (Dato-DXd) is a trophoblast cell-surface antigen-2-directed antibody-drug conjugate with a highly potent topoisomerase I inhibitor payload. The TROPION-Lung05 phase II trial (ClinicalTrials.gov identifier: NCT04484142) evaluated the safety and clinical activity of Dato-DXd in patients with advanced/metastatic non-small cell lung cancer (NSCLC) with actionable genomic alterations progressing on or after targeted therapy and platinum-based chemotherapy.

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Introduction: Treatment options for patients with epidermal growth factor receptor (EGFR)-mutated non-small cell lung cancer (NSCLC) with disease progression on/after osimertinib and platinum-based chemotherapy are limited.

Methods: CHRYSALIS-2 Cohort A evaluated amivantamab+lazertinib in patients with EGFR exon 19 deletion- or L858R-mutated NSCLC with disease progression on/after osimertinib and platinum-based chemotherapy. Primary endpoint was investigator-assessed objective response rate (ORR).

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Introduction: Treatment with adjuvant osimertinib for three years is the standard-of-care for resected stage IB-IIIA non-small cell lung cancer (NSCLC) harboring epidermal growth factor receptor (EGFR)-mutations. The role of neoadjuvant osimertinib in the perioperative setting is yet to be elucidated in the NeoADAURA study (NCT04351555).

Methods: This is a single center, pilot study of patients with clinical stage IA-IIIA NSCLC (AJCC 8th edition) harboring an activating EGFR mutation (Exon 19 deletion, L858R) (NCT04816838).

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Various combination therapies have been investigated to overcome the limitations of using immune checkpoint inhibitors. However, determining the optimal combination therapy remains challenging. To overcome the therapeutical limitation, we conducted a translational research to elucidate the mechanisms by which AXL inhibition enhances the anti-tumor effects when combined with anti-PD-1 antibody therapy.

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What Is This Summary About?: This is a summary of a phase 2 clinical study called DeLLphi-301. The study looked at how effective and safe a medicine called tarlatamab was in participants with small cell lung cancer (SCLC). Participants previously received at least two other treatments for their SCLC.

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We report clinical activity and safety of sitravatinib in patients with advanced cancer from basket cohorts with specific molecular alterations, in a Phase Ib study. Patients with advanced solid tumors harboring amplification, mutation, or rearrangement of , , , , , , , or received sitravatinib once daily. Primary end point was confirmed objective response rate (ORR).

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Purpose: Small-cell lung cancer (SCLC) accounts for approximately 10-15% of all lung cancers and is characterized by a high recurrence rate, early metastasis, and poor prognosis. Before the FDA approved lurbinectedin for SCLC that progressed on or after platinum-based chemotherapy in 2020, topotecan was the sole second-line option associated with hematological toxicities and modest efficacy. Lurbinectedin received conditional approval in Korea in September 2022 for metastatic SCLC progression, with the same indications.

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Article Synopsis
  • Many non-small-cell lung cancer (NSCLC) patients develop resistance to existing EGFR tyrosine kinase inhibitors (TKIs), particularly due to _C797S mutations that render osimertinib ineffective.
  • BLU-945 is a new orally available EGFR-TKI that effectively targets both activating and resistance mutations, including EGFR_C797S, showing significant potency while sparing healthy EGFR.
  • In preclinical and early clinical studies, BLU-945 demonstrated promising results, inhibiting tumor growth in resistant models and patients, suggesting it could be a viable treatment option for NSCLC patients who no longer respond to osimertinib.
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  • Lazertinib is a new type of medicine that helps treat a kind of lung cancer called NSCLC, especially for people whose cancer got worse after other treatments.
  • In a study with 78 patients, those taking lazertinib lived for an average of about 39 months and had good survival rates at 1, 2, and 3 years.
  • The study found that checking for certain cancer genes in the blood can help predict how well patients will respond to lazertinib treatment.
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  • * In the study, 345 previously treated patients were given either sotorasib or docetaxel, with various validated questionnaires used to assess quality of life and symptom burden over time.
  • * Results indicated that patients on sotorasib experienced fewer and less severe side effects, maintained better quality of life, and reported that their symptoms caused less interference with daily activities compared to those on docetaxel.
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  • - The study aimed to assess the safety, tolerability, pharmacokinetics, and effectiveness of sasanlimab, a monoclonal antibody targeting PD-1, in treating participants with advanced cancers, including a focus on non-small-cell lung cancer.
  • - An open-label design was used, with Phase Ib involving dose escalation and expansion in Asian participants, while Phase II included a global trial randomizing participants to receive either 300 mg every 4 weeks or 600 mg every 6 weeks.
  • - Results indicated that Phase Ib had no dose-limiting toxicities and Phase II showed manageable grade 3 treatment-related adverse events, with confirmed response rates of 26.8% and 15.0%
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  • Three generations of tyrosine kinase inhibitors (TKIs) exist for ALK fusion-positive non-small cell lung cancer, but they fail to effectively address resistance, brain activity, and TRK inhibition issues.* -
  • NVL-655, a new TKI, shows superior selectivity and potency against ALK mutations, significantly outperforming current approved ALK TKIs in preclinical studies.* -
  • Preliminary results from a phase I/II trial indicate NVL-655's promise for treating heavily pretreated patients, including those with brain metastases and resistance mutations, potentially making it a fourth-generation advancement for ALK-driven cancers.*
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Background: Adjuvant therapy with durvalumab, with or without tremelimumab, may have efficacy in patients with limited-stage small-cell lung cancer who do not have disease progression after standard concurrent platinum-based chemoradiotherapy.

Methods: In a phase 3, double-blind, randomized, placebo-controlled trial, we assigned patients to receive durvalumab at a dose of 1500 mg, durvalumab (1500 mg) plus tremelimumab at a dose of 75 mg (four doses only), or placebo every 4 weeks for up to 24 months. Randomization was stratified according to disease stage (I or II vs.

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Purpose: The ETOP 10-16 BOOSTER study was a randomized phase II trial of osimertinib and bevacizumab therapy versus osimertinib therapy in patients with an acquired EGFR T790M mutation. The mechanisms of acquired resistance to osimertinib and bevacizumab have not been described previously.

Experimental Design: Next-generation sequencing (Guardant360) was conducted in serial plasma samples.

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Introduction: The primary analysis (median follow-up 34.9 mo across all arms) of the phase 3 POSEIDON study revealed a statistically significant overall survival (OS) improvement with first-line tremelimumab plus durvalumab and chemotherapy (T+D+CT) versus CT in patients with EGFR and ALK wild-type metastatic NSCLC (mNSCLC). D+CT had a trend for OS improvement versus CT that did not reach statistical significance.

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Article Synopsis
  • Sitravatinib (MGCD516) is an oral drug that targets multiple tyrosine kinase receptors and was tested for safety and effectiveness in patients with advanced clear cell renal cell carcinoma (RCC) and castrate-resistant prostate cancer (CRPC) in a Phase 1/1b study.
  • In the RCC group, the objective response rate (ORR) was 25.9%, with promising results such as a median progression-free survival (PFS) of 9.5 months and overall survival (OS) of 30 months, while no responses were seen in the CRPC group.
  • Common side effects included diarrhea (72.9%), fatigue (54.2%), and hypertension (52.
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While cancer immunotherapy has yielded encouraging outcomes in hematological malignancies, it has faced challenges in achieving the same level of effectiveness in numerous solid tumors, primarily because of the presence of immune-suppressive tumor microenvironments (TMEs). The immunosuppressive qualities of the TME have generated considerable interest, making it a focal point for treatments aimed at enhancing immune responses and inhibiting tumor progression. Fibroblast activation protein (FAP), an attractive candidate for targeted immunotherapy, is prominently expressed in the TME of various solid tumors.

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  • Advanced head and neck squamous cell carcinoma (HNSCC) is challenging to treat, prompting research into combining immunotherapies like epacadostat (IDO inhibitor) with pembrolizumab (PD-1 inhibitor) for potential better outcomes compared to single treatments.
  • The KEYNOTE-669/ECHO-304 clinical trial examined the effectiveness and safety of this combination versus pembrolizumab alone and the standard EXTREME regimen in patients with recurrent/metastatic HNSCC, with results cut off in January 2019 after early study enrollment cessation.
  • Results showed varying objective response rates: 31% for the combination therapy, 21% for pembrolizumab alone, and 34% for EXTREME,
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Background: Amivantamab, an EGFR-MET bispecific antibody, is the first approved targeted therapy for patients with EGFR Ex20ins NSCLC after prior platinum-based chemotherapy-a population with historically poor outcomes before amivantamab approval. As antitumor activity in single-arm studies typically focuses on responders, the evaluation of outcomes in patients with stable disease (SD) as best response is of clinical interest.

Patients And Methods: Among 114 patients with post-platinum EGFR Ex20ins NSCLC in CHRYSALIS (NCT02609776; data cutoff: March 30, 2021), response was assessed by blinded independent central review via RECIST v1.

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Introduction: EGFR tyrosine kinase inhibitor (EGFR-TKI)-sensitizing and -resistance mutations may be detected in plasma through circulating tumor DNA (ctDNA). Circulating tumor DNA level changes reflect alterations in tumor burden and could be a dynamic indicator of treatment effect. This analysis aimed to determine whether longitudinal EGFR-mutation ctDNA testing could detect progressive disease (PD) before radiologic detection.

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Evidence from the Phase III PACIFIC trial established durvalumab, a monoclonal antibody (mAb) targeting PD-L1, following concurrent chemoradiotherapy (cCRT) as a global standard of care for patients with unresectable, stage III non-small-cell lung cancer (NSCLC). There remains an unmet need to improve upon the outcomes achieved with the PACIFIC regimen. Combining durvalumab with other immunotherapies may improve outcomes further.

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Purpose: The Korean Cancer Study Group (KCSG) is a nationwide cancer clinical trial group dedicated to advancing investigator-initiated trials (IITs) by conducting and supporting clinical trials. This study aims to review IITs conducted by KCSG and quantitatively evaluate the survival and financial benefits of IITs for patients.

Materials And Methods: We reviewed IITs conducted by KCSG from 1998 to 2023, analyzing progression-free survival (PFS) and overall survival (OS) gains for participants.

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