ArticleJournal of clinical medicine2022
Impact of Results of TTF-1 Immunostaining on Efficacy of Platinum-Doublet Chemotherapy in Japanese Patients with Nonsquamous Non-Small-Cell Lung Cancer.
Article in Journal of clinical medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 4 citations in OpenAlex.
- Predictive value of TTF-1 expression for stratifying outcomes between dual ICI and chemoimmunotherapy in patients with PD-L1-negative NSCLC.International journal of clinical oncology · 2026Article
- Prognostic impact of thyroid transcription factor-1 expression and the efficacy of carboplatin plus (nab-) paclitaxel in non-squamous non-small cell lung cancer complicated with idiopathic interstitial pneumonias.Translational lung cancer research · 2026Article
- TTF-1 expression stratifies chemoimmunotherapy benefits in PD-L1-negative lung adenocarcinoma: a real-world biomarker validation.Journal of thoracic disease · 2025Article
- Impact of TTF-1 Expression on the Prognostic Prediction of Patients with Non-Small Cell Lung Cancer with PD-L1 Expression Levels of 1% to 49%, Treated with Chemotherapy vs. Chemoimmunotherapy: A Multicenter, Retrospective Study.Cancer research and treatment · 2025Article
- Unraveling the influence of TTF-1 expression on immunotherapy outcomes in PD-L1-high non-squamous NSCLC: a retrospective multicenter study.Frontiers in immunology · 2024Article
- Predictive Impact of Diffuse Positivity for TTF-1 Expression in Patients Treated With Platinum-Doublet Chemotherapy Plus Immune Checkpoint Inhibitors for Advanced Nonsquamous NSCLC.JTO clinical and research reports · 2023Article
- Treatment Response and Survival in Thyroid Transcription Factor-1 Negative Non-squamous Non-small Cell Lung Cancer.Cancer diagnosis & prognosisArticle
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8 authors at 1 institution in 1 country.
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Abstract
backgroundPemetrexed is a key drug in chemotherapy for nonsquamous non-small-cell lung cancer (nonsq NSCLC). Several studies have reported thyroid transcription factor-1 (TTF-1) as a biomarker of the efficacy in chemotherapy regimens, including pemetrexed in non-Asian people.
objectiveWe aimed to examine the impact of the results of the TTF-1 immunostaining of tumor cells on the therapeutic effect of chemotherapy in Japanese patients with nonsq NSCLC.
methodsWe examined the results of TTF-1 immunostaining and the clinical background of Japanese patients with nonsq NSCLC who received platinum-doublet chemotherapy at our hospital, from April 2009 to April 2021, and the correlation between regimens with or without pemetrexed in progression-free survival (PFS) and overall survival (OS). The efficacy of each regimen was then compared between TTF-1-positive and TTF-1-negative tumors.
resultsTTF-1 immunostaining was performed in 145 patients during the study period: 92 were positive, and 53 were negative. A total of 24 patients presented with EGFR/ALK gene abnormality (16.6%). The PFS and OS of patients who were TTF-1-positive tended to be longer than those of the patients who were TTF-1-negative under either regimen. In other words, patients who were TTF-1-negative were frequently resistant to numerous chemotherapy drugs and experienced a poor prognosis under both regimens. The OS of patients who were TTF-1-positive and treated with the pemetrexed regimen was significantly longer than those on regimens without pemetrexed (963 vs. 412 days, HR = 0.73; 95% CI 0.55-0.96,
conclusionsThe positivity of TTF-1 immunostaining in tumors could be a predominant prognostic marker for patients who have advanced nonsq NSCLC. Our analysis examined the possibility of a pemetrexed regimen leading to a longer prognosis in Asian patients who were TTF-1-positive for nonsq NSCLC, as shown in previous studies.
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