Dong-Hoon Lim, Hyunseok Yoon, Kyu-pyo Kim, Baek-Yeol Ryoo, Sang Soo Lee, Do Hyun Park, Tae Jun Song, Dae Wook Hwang, Jae Hoon Lee, Ki Byung Song, Song Cheol Kim, Seung-Mo Hong, Jaewon Hyung, Changhoon Yoo
Cancer Res Treat. 2023;55(4):1313-1320. Published online May 4, 2023
Purpose There are no reliable biomarkers to guide treatment for patients with borderline resectable pancreatic cancer (BRPC) in the neoadjuvant setting. We used plasma circulating tumor DNA (ctDNA) sequencing to search biomarkers for patients with BRPC receiving neoadjuvant mFOLFIRINOX in our phase 2 clinical trial (NCT02749136).
Materials and Methods Among the 44 patients enrolled in the trial, patients with plasma ctDNA sequencing at baseline or post-operation were included in this analysis. Plasma cell-free DNA isolation and sequencing were performed using the Guardant 360 assay. Detection of genomic alterations, including DNA damage repair (DDR) genes, were examined for correlations with survival.
Results Among the 44 patients, 28 patients had ctDNA sequencing data qualified for the analysis and were included in this study. Among the 25 patients with baseline plasma ctDNA data, 10 patients (40%) had alterations of DDR genes detected at baseline, inclu-ding ATM, BRCA1, BRCA2 and MLH1, and showed significantly better progression-free survival than those without such DDR gene alterations detected (median, 26.6 vs. 13.5 months; log-rank p=0.004). Patients with somatic KRAS mutations detected at baseline (n=6) had significantly worse overall survival (median, 8.5 months vs. not applicable; log-rank p=0.003) than those without. Among 13 patients with post-operative plasma ctDNA data, eight patients (61.5%) had detectable somatic alterations.
Conclusion Detection of DDR gene mutations from plasma ctDNA at baseline was associated with better survival outcomes of pati-ents with borderline resectable pancreatic ductal adenocarcinoma treated with neoadjuvant mFOLFIRINOX and may be a prognostic biomarker.
Citations
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A Review of Circulating Tumor DNA (ctDNA) in Pancreatic Cancer: Ready for the Clinic? Purvi Jonnalagadda, Virginia Arnold, Benjamin A. Weinberg Journal of Gastrointestinal Cancer.2025;[Epub] CrossRef
A Practical Approach to Interpreting Circulating Tumor DNA in the Management of Gastrointestinal Cancers Zexi Allan, David S Liu, Margaret M Lee, Jeanne Tie, Nicholas J Clemons Clinical Chemistry.2024; 70(1): 49. CrossRef
High somatic mutations in circulating tumor DNA predict response of metastatic pancreatic ductal adenocarcinoma to first-line nab-paclitaxel plus S-1: prospective study Lei Huang, Yao Lv, Shasha Guan, Huan Yan, Lu Han, Zhikuan Wang, Quanli Han, Guanghai Dai, Yan Shi Journal of Translational Medicine.2024;[Epub] CrossRef
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Building on the clinical applicability of ctDNA analysis in non-metastatic pancreatic ductal adenocarcinoma Ibone Labiano, Ana E. Huerta, Maria Alsina, Hugo Arasanz, Natalia Castro, Saioa Mendaza, Arturo Lecumberri, Iranzu Gonzalez-Borja, David Guerrero-Setas, Ana Patiño-Garcia, Gorka Alkorta-Aranburu, Irene Hernández-Garcia, Virginia Arrazubi, Elena Mata, Davi Scientific Reports.2024;[Epub] CrossRef
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So Heun Lee, Dae Wook Hwang, Changhoon Yoo, Kyu-pyo Kim, Sora Kang, Jae Ho Jeong, Dongwook Oh, Tae Jun Song, Sang Soo Lee, Do Hyun Park, Dong Wan Seo, Jin-hong Park, Ki Byung Song, Jae Hoon Lee, Woohyung Lee, Yejong Park, Bong Jun Kwak, Heung-Moon Chang, Baek-Yeol Ryoo, Song Cheol Kim
Cancer Res Treat. 2023;55(3):956-968. Published online February 27, 2023
Purpose The benefit of adjuvant chemotherapy following curative-intent surgery in pancreatic ductal adenocarcinoma (PDAC) patients who had received neoadjuvant FOLFIRINOX is unclear. This study aimed to assess the survival benefit of adjuvant chemotherapy in this patient population.
Materials and Methods This retrospective study included 218 patients with localized non-metastatic PDAC who received neoadjuvant FOLFIRINOX and underwent curative-intent surgery (R0 or R1) between January 2017 and December 2020. The association of adjuvant chemotherapy with disease-free survival (DFS) and overall survival (OS) was evaluated in overall patients and in the propensity score matched (PSM) cohort. Subgroup analysis was conducted according to the pathology-proven lymph node status.
Results Adjuvant chemotherapy was administered to 149 patients (68.3%). In the overall cohort, the adjuvant chemotherapy group had significantly improved DFS and OS compared to the observation group (DFS: median, 13.8 months [95% confidence interval (CI), 11.0 to 19.1] vs. 8.2 months [95% CI, 6.5 to 12.0]; p < 0.001; and OS: median, 38.0 months [95% CI, 32.2 to not assessable] vs. 25.7 months [95% CI, 18.3 to not assessable]; p=0.005). In the PSM cohort of 57 matched pairs of patients, DFS and OS were better in the adjuvant chemotherapy group than in the observation group (p < 0.001 and p=0.038, respectively). In the multivariate analysis, adjuvant chemotherapy was a significant favorable prognostic factor (vs. observation; DFS: hazard ratio [HR], 0.51 [95% CI, 0.36 to 0.71; p < 0.001]; OS: HR, 0.45 [95% CI, 0.29 to 0.71; p < 0.001]).
Conclusion Among PDAC patients who underwent surgery following neoadjuvant FOLFIRINOX, adjuvant chemotherapy may be associated with improved survival. Randomized studies should be conducted to validate this finding.
Citations
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The survival effect of neoadjuvant therapy and neoadjuvant plus adjuvant therapy on pancreatic ductal adenocarcinoma patients with different TNM stages: a propensity score matching analysis based on the SEER database Hao Hu, Yang Xu, Qiang Zhang, Yuan Gao, Zhenyu Wu Expert Review of Anticancer Therapy.2024; 24(6): 467. CrossRef
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Junho Kang, Jae Ho Jeong, Hee-Sang Hwang, Sang Soo Lee, Do Hyun Park, Dong Wook Oh, Tae Jun Song, Ki-Hun Kim, Shin Hwang, Dae Wook Hwang, Song Cheol Kim, Jin-hong Park, Seung-Mo Hong, Kyu-pyo Kim, Baek-Yeol Ryoo, Changhoon Yoo
Cancer Res Treat. 2020;52(2):594-603. Published online December 18, 2019
Purpose
The current standard chemotherapy for advanced biliary tract cancer (BTC) has limited benefit, and novel therapies need to be investigated.
Materials and Methods
In this prospective cohort study, programmed death ligand-1 (PD-L1)–positive BTC patients who progressed on first-line gemcitabine plus cisplatin were enrolled. Pembrolizumab 200 mg was administered intravenously every 3 weeks.
Results
Between May 2018 and February 2019, 40 patients were enrolled. Pembrolizumab was given as second-line (47.5%) or ≥ third-line therapy (52.5%). The objective response rate was 10% and 12.5% by Response Evaluation Criteria in Solid Tumor (RECIST) v1.1 and immune- modified RECIST (imRECIST) and median duration of response was 6.3 months. Among patients with progressive disease as best response, one patient (1/20, 5.0%) achieved complete response subsequently. The median progression-free survival (PFS) and overall survival (OS) were 1.5 months (95% confidence interval [CI], 0.0 to 3.0) and 4.3 months (95% CI, 3.5 to 5.1), respectively, and objective response per imRECIST was significantly associated with PFS (p < 0.001) and OS (p=0.001). Tumor proportion score ≥ 50% was significantly associated with higher response rates including the response after pseudoprogression (vs. < 50%; 37.5% vs. 6.5%; p=0.049).
Conclusion
Pembrolizumab showed modest anti-tumor activity in heavily pretreated PD-L1–positive BTC patients. In patients who showed objective response, durable response could be achieved.
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Cancer Res Treat. 2020;52(1):254-262. Published online July 9, 2019
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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