Yonsei University · Medicine
Professor Jii Bum Lee's research lab focuses on translational cancer immunology, with a central emphasis on immune checkpoint pathways and their role in tumor immune evasion. The lab investigates novel immune targets such as LAG-3, TIGIT, and the PVR pathway in solid tumors, particularly in non-small cell lung cancer and colorectal cancer. It also explores the impact of microbiome components like *Fusobacterium nucleatum* on cancer progression and treatment response. Additionally, the lab is involved in clinical development of targeted therapies, including AKT inhibitors like TAS-117, for patients with advanced cancers harboring PI3K/Akt pathway mutations.
Figures are computed from collected data and may differ slightly.
Targeting immune evasion via immune checkpoint pathways has changed the treatment paradigm in cancer. Since CTLA-4 antibody was first approved in 2011 for treatment of metastatic melanoma, eight immune checkpoint inhibitors (ICIs) centered on PD-1 pathway blockade are approved and currently administered to treat 18 different types of cancers. The first part of the review focuses on the history of CTLA-4 and PD-1 discovery and the preclinical experiments that demonstrated the possibility of anti-
The success of immune checkpoint inhibitors (ICIs), notably anti-cytotoxic T lymphocyte associated antigen-4 (CTLA-4) as well as inhibitors of CTLA-4, programmed death 1 (PD-1), and programmed death ligand-1 (PD-L1), has revolutionized treatment options for solid tumors. However, the lack of response to treatment, in terms of <i>de novo</i> or acquired resistance, and immune related adverse events (IRAE) remain as hurdles. One mechanisms to overcome the limitations of ICIs is to target other imm
Recent evidence suggests that Fusobacterium nucleatum (Fn) is associated with the development and progression of colorectal cancer. We aimed to delineate the clinical implications of Fn in metastatic colon cancer. We performed quantitative polymerase chain reaction (qPCR) using DNA samples from synchronous metastatic colon cancer patients with either formalin-fixed paraffin-embedded (FFPE) archival primary site tumor samples or fresh colon tissues. Progression-free survival (PFS)1 and PFS2 were
Targeting T-Cell Immunoreceptor with Ig and ITIM domain-poliovirus receptor (PVR) pathway is a potential therapeutic strategy in lung cancer. We analyzed the expression of PVR and programmed death ligand-1 (PD-L1) in surgically resected squamous cell lung carcinoma (SQCC) and determined its prognostic significance. We collected archival surgical specimens and data of 259 patients with SQCC at Yonsei Cancer Center (1998-2020). Analysis of variance was used to analyze the correlations between PVR
TAS-117 is a potent and selective allosteric pan-v-akt murine thymoma viral oncogene homolog (Akt) inhibitor. We conducted a single-arm single-center phase 2 study of TAS-117 in heavily treated patients with tumors refractory to systemic chemotherapy and harboring phosphatidylinositol 3-kinase (PI3K)/Akt mutations. Patients with gastrointestinal (GI) cancers were orally administered 16 mg TAS-117 daily, and those with non-GI tumors were administered 24 mg on a 4 days on/3 days off schedule. The
At the end of 2019, the cause of pneumonia outbreaks in Wuhan, China, was identified as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. In February 2020, the World Health Organization named the disease cause by SARS-CoV-2 as coronavirus disease 2019 (COVID-19). In response to the pandemic, the Korean Cancer Association formed the COVID-19 task force to develop practice guidelines. This special article introduces the clinical practice guidelines for cancer patients which w
Two cycles of neoadjuvant osimertinib did not meet its primary endpoint of ORR. Neoadjuvant osimertinib is a feasible approach with a manageable safety profile in resectable EGFR-mutant NSCLC.
ClinicalTrials.gov, NCT02167321. Registered on 19 June 2014.
Temsirolimus not only benefits poor-risk nccRCC patients, but it is also effective in favorable or intermediate-risk group in Asians. Temsirolimus was well-tolerated with manageable adverse events.
4534 Background: BVAC-B is an autologous B cell- and monocyte-based immunotherapeutic vaccine transfected with recombinant HER2/neu gene and loaded with alpha-galactosyl ceramide, a natural killer T cell ligand. It may have activity against HER2/neu positive cancer. Preclinical data in mouse models have shown promising anti-tumor activity by eliciting broad spectrum of immune responses against HER2/neu positive tumor cells. We report here the results of phase 1 study of BVAC-B in HER2 positive a
Using MRI-guided selection for better risk stratification, US without neoadjuvant therapy can be considered in early stage patients with good prognosis. PCRT may not be required for all stage II/III rectal cancer patients, especially for the MRI-proven intermediate-risk group (cT1-2/N1, cT3N0) without CRM involvement and lateral lymph node metastasis. Further prospective studies are warranted.
Metastatic angiosarcoma patients with PD-L1 expression showed shorter survival. PD-L1 status is an independent prognostic factor for OS in metastatic angiosarcoma patients.
Treatment strategies for post-epidermal growth factor receptor (<i>EGFR</i>) tyrosine kinase inhibitor (TKI) therapy in <i>EGFR</i>-mutant non-small cell lung cancer (NSCLC) is an ongoing challenge. Previously, the IMPRESS trial comparing platinum doublet chemotherapy with or without <i>EGFR</i>-TKI did not demonstrate any progression-free survival (PFS) benefit. The retrospective subgroup analysis of IMpower150 indicated that the quad regimen (carboplatin, paclitaxel, bevacizumab, atezolizumab)
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