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  • American Society of Clinical Oncology (ASCO)  (11)
  • 1
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 34, No. 4_suppl ( 2016-02-01), p. 96-96
    Abstract: 96 Background: Ruptured GIST, either preoperatively or intraoperatively, has ominous prognosis and is classified as high risk GIST in the modified Fletcher risk stratification. Although patients (pts) with these GISTs are recommended for 3-year imatinib adjuvant therapy, their clinicopathological features and compliance of guidelines are unknown. Methods: Between Dec. 2012 and Aug. 2015, 474 pts with high-risk GISTs locally diagnosed were prospectively registered. Among them, 453 pts with GISTs histologically confirmed by central review were analyzed. There were 243 males and 210 females with median age of 65 yrs. In the central review, H & E, immunohistochemistry, and genotyping were tested. Results: Disease was located in the stomach (n = 279), small intestine (n = 137), large intestine (n = 25), or others (n = 12). Median tumor size was 7.7 cm and median mitosis (local pathology) was 10/50HPF. Tumor rupture was seen in 54 pts (12%) who had preoperative rupture (28 pts) or intraoperative rupture (25 pts). After surgery, adjuvant therapy was administered for 342 pts (75%) and withheld for 89 pts (20%). Tumor rupture was frequently observed in small intestinal GIST (23.6%) other than the duodenum and in epithelioid and/or mixed features (24%). Mitosis of ruptured GIST (median = 5.0/50 HPF) was significantly lower than that of non-ruptured (11/50 HPF). Age, gender, tumor size and genotype are not related with rupture. There was no difference in postoperative complications and adhibition of adjuvant therapy in pts who have ruptures vs pts who don’t. Preoperative rupture was associated with small intestinal GIST and R1 surgery. Mitosis was significantly lower in GIST with preoperative rupture (5/50 HPF) than that without rupture (11/50 HPF). GIST with intraoperative rupture (11.8 cm) was larger than that without rupture (7.5 cm) although there was no difference in mitosis, location and genotype. Frequency of intraoperative rupture was not different between laparoscopic surgery (4.8%) and open one (6.3%). Conclusions: Tumor rupture was not infrequent in high risk GIST and half of rupture was occurred during surgery, which may be related to large tumor size but not with laparoscopic surgery. Clinical trial information: UMIN000009531.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2016
    detail.hit.zdb_id: 2005181-5
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  • 2
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 40, No. 4_suppl ( 2022-02-01), p. 555-555
    Abstract: 555 Background: The latest National Comprehensive Cancer Network Guidelines for pancreatic adenocarcinoma recommended platinum-based chemotherapy for the patients with germline BRCA1/2 or PALB2 variants based on retrospective studies. However, the association between the efficacy of oxaliplatin-based chemotherapy and homologous recombination repair (HRR)-related gene variants has not yet been evaluated in a prospective study. Methods: This was a multicenter, prospective, observational study. Key inclusion criteria were: histologically confirmed pancreatic adenocarcinoma or adenosquamous carcinoma; candidates for systemic chemotherapy or currently under systemic chemotherapy for unresectable disease; age ≥ 20 years; Eastern Cooperative Oncology Group Performance Status 0–2; formalin-fixed paraffin-embedded cancer tissue available for genomic sequencing; and adequate hematological, liver, and renal function. Patients were assessed with the next generation sequencing (NGS)-based ACT-repair panel (ACT genomics; Taipei, Taiwan). ACT-repair panel is accredited by College of American Pathologists and is designed to detect short variants (SVs) including substitutions, insertions, deletions, and copy number variants of 35 genes including 8 HRR-related genes ( ATM, ATR, BRCA1, BRCA2, PALB2, RAD51B, RAD51C, RAD51D). The primary endpoint was the one-year overall survival rate (1yr-OS%) after the initiation of oxaliplatin-based chemotherapy in patients who harbored pathogenic HRR gene variants. On the basis of published retrospective data, expected 1yr-OS% was set at ≥ 60% in this study. Results: Forty patients were enrolled from August 2018 to March 2020. Median age was 67 years (range, 49–81 years). Sequencing data were obtained from 39 patients (NGS success rate = 97.5%). Nine patients (22.5%) harboring HRR gene; ATM SVs (n = 4), BRCA2 loss of heterozygosity (LOH) (n = 3), BRCA2 SVs (n = 1), and PALB2 LOH (n = 1). Three patients received oxaliplatin-based chemotherapy as first-line chemotherapy, while the remaining six patients received it as second- or later-line oxaliplatin-based chemotherapy. The 1yr-OS% was 44.4%, and the median overall survival was 221 days (95% confidence interval, 79–NA days) after the initiation of oxaliplatin-based chemotherapy. In three patients who received oxaliplatin-based chemotherapy as first-line treatment, overall survivals were 703 (alive), 694 (alive), and 405 (dead) days, respectively. Conclusions: Efficacy of oxaliplatin-based chemotherapy on advanced pancreatic cancer harboring HRR-related gene variants did not meet the primary endpoint of 1yr-OS% (≥ 60%). Clinical trial information: UMIN000033655.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2022
    detail.hit.zdb_id: 2005181-5
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  • 3
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 32, No. 3_suppl ( 2014-01-20), p. 663-663
    Abstract: 663 Background: Monoclonal antibodies targeting the epidermal growth factor receptor (EGFR) such as Cmab and Pmab have antitumor activity and acceptable safety profiles in patients (pts) with mCRC. Monotherapy with Cmab or Pmab demonstrated the effectiveness in salvage-line, and the direct comparison was reported in ESMO 2013 (ASPECCT trial). Methods: Data of 31 pts with mCRC treated by monotherapy with Cmab (HGCSG0901) and 51 pts by monotherapy with Pmab (HGCSG1002) registered from 27 institutions in Japan. Comparison of Cmab with Pmab was retrospectively analyzed. All patients with KRAS wild type were refractory to or intolerant for 5-FU/irinotecan/oxaliplatin and also were never administered anti-EGFR-antibodies. Survival analyses were performed with Kaplan-Meier method, log-rank test, and Cox proportional hazards model. Results: Patient characteristics were as below (Cmab vs. Pmab); male/female 20/11 vs. 27/24, median age (range) 65(44-76) vs. 64(44-81), PS 0-1/2-3 21/10 vs. 46/5, number of metastatic organs 1-2/3- 22/9 vs. 25/16. Skin toxicity was common adverse events and was generally similar in two groups. MST was 8.4 months in the Cmab and 8.1 months in the Pmab (p = 0.32). PFS was 3.8 months in the Cmab, as compared with 3.1 months in the Pmab (p = 0.60); the corresponding response rate was 19.4% and 13.7% (p = 0.54). After adjusting other prognostic factors with Cox proportional hazard model, the administration of Cmab/Pmab made significant difference neither for OS (HR 0.939, 95% CI 0.783-1.128, p = 0.503), nor PFS (HR 0.972, 95% CI 0.823-1.148, p = 0.735). Conclusions: In this integration analysis of two studies, there were no significant difference in efficacy between Cmab and Pmab monotherapy in the salvage-line treatment of pts with mCRC.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2014
    detail.hit.zdb_id: 2005181-5
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  • 4
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 38, No. 4_suppl ( 2020-02-01), p. 647-647
    Abstract: 647 Background: Pancreatic adenosquamous carcinoma (PASC) is a rare variant of pancreatic ductal adenocarcinoma (PDAC). Although unresectable or recurrent PASC is usually treated by systemic chemotherapy, there are few reports which show the efficacy of chemotherapy. The aim of this study was to evaluate the efficacy of chemotherapy for patients (pts) with unresectable or recurrent PASC. Methods: We collected data retrospectively from 24 Japanese institutions. The selection criteria were as follows: 1) histologically or cytologically proven PASC (non-surgical specimens were eligible if squamous cell carcinoma (SCC) was detected), 2) unresectable or recurrent disease treated with 1st line chemotherapy between April 2001 and December 2017. Results: This study included 138 pts with median age of 66 years (range: 36-85). About 60% of pts were diagnosed with biopsy and only SCC was detected in 13.0% of pts. Median overall survival (mOS) was 6.7 months (M), median progression free survival (mPFS) was 2.8 M, and the 1-year survival rate (1YSR) was 26.7%. For the 102 metastatic or distal recurrent pts with PS of 0-1, patient characteristics were as follows: ≥76 years old, 9 (8.8%); PS of 0, 39 (38.2%); number of metastatic sites ≥2, 25 (24.5%). The treatment efficacies (The objective response rates(%)/mPFS(M)/mOS(M)/1YSR(%)) of the 5 major regimens were Gemcitabine(GEM) (n=45, 4.4%/2.2M/4.8M/28.1%), GEM+nab-PTX (n=24, 29.2%/2.9M/7.6M/23.1%), GEM+S-1 (n=9, 11.1%/5.1M/9.9M/25.4%), FOLFIRINOX (n=7, 14.3%/2.5M/7.5M/14.3%), and S-1 (n=7; 28.6%/2.6M/5.0M/28.6%), respectively. One patient with liver metastasis underwent conversion surgery after GEM+nab-PTX and achieved long survival. CRP ≥3.0mg/dl, CA19-9 ≥1000 U/ml, residual primary site, and monotherapy had a significant correlation with poor survival in multivariate analysis. Conclusions: Although combination chemotherapy regimens such as FOLFIRINOX and GEM+nab-PTX are now available, the prognosis of metastatic PASC remains poor. Development of more effective treatment options is required.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2020
    detail.hit.zdb_id: 2005181-5
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  • 5
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 30, No. 4_suppl ( 2012-02-01), p. 290-290
    Abstract: 290 Background: Nowadays Radiofrequency ablation (RFA) is a popular method and demonstrates favorable results for the treatment of small-sized hepatocellular carcinoma (HCC). However, whether RFA is as effective as hepatic resection (HR) for long-term outcomes remains controversial. The aim of this study is to compare HR and RFA with regard to survival and recurrence for the establishment of treatment strategy of small-sized HCC. Methods: A total of 183 patients with solitary small-sized (≤3cm) HCC were enrolled in this study: 101 patients underwent HR and 82 underwent RFA as an initial treatment. Overall survival (OS) and disease-free survival (DFS) were compared between the two groups and in subgroup analyses. Results: Patients who underwent RFA had less platelet count (HR: 15.3±7.0, RFA: 9.8±3.6, P 〈 0.01), and more advancer Child-Pugh class (A/B = HR: 97/4, RFA: 61/22, P 〈 0.01). The 5-year OS and DFS were significantly higher in the HR group compared with the RFA group (OS: 90% vs 59%, P 〈 0.01, DFS: 45% vs 27%, P 〈 0.01, respectively). In multivariate analyses, treatment modality (HR or RFA) and gender were indipendent predicting factors for DFS (RR: 1.85, P=0.05, and RR: 2.15, P=0.01, respectively). In subgroup analyses of HCC 〈 2cm, there was no significant difference in OS and DFS between the two group (5-year OS: 90% vs 74%, P=0.40, 5-year DFS: 43% vs 28%, P=0.24, respectively), despite the differences in liver functional reserve. However, HR was superior to RFA for OS and DFS in subgroup ≥2cm (5-year OS: 85% vs 32%, P 〈 0.01, 5-year DFS: 40% vs 23%, P 〈 0.01). In the subgroup analyses treated by RFA, GPT 〉 35mIU/ml and tumor ≥2cm were significant predicting factors for DFS (RR: 2.34, P=0.01, and RR: 2.09, P=0.02, respectively). For OS, tumor ≥2cm was the only prognostic factor (RR: 2.9, P=0.04). Conclusions: RFA might be as effective as HR for the treatment of solitary HCC 〈 2cm. However, in the patients with HCC ≥2cm, HR provides a better OS and DFS than RFA.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2012
    detail.hit.zdb_id: 2005181-5
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  • 6
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 30, No. 4_suppl ( 2012-02-01), p. 319-319
    Abstract: 319 Background: Portal vein embolization (PVE) is a multi-potential treatment for hepatocellular carcinoma (HCC). The aim of this study is to identify the efficacies of PVE for resectable and unresectable HCC patients. Methods: Until 2011, 668 HCC patients underwent hepatic resection and 102 HCC patients treated with PVE. PVE was performed with percutaneous and ipsilateral approach using ethanolamine oleate iopamidol. Preoperative future remnant liver volume (%LV) and functional liver volume (%FLV ) were assessed with our developed combined 99m Tc- galactosyl human serum albumin (GSA) scintigraphy (SPECT)/CT system. In unresectable cases chemoembolization (TACE) was repeated after PVE. Results: 1. Comparison of %LV and %FLV after right-PVE (n=40). %FLV before PVE was significantly lower in PVE group (38%) compared to non-PVE group (58%), but increased remarkably after PVE (from 38% to 55%, P 〈 0.0001). Right hepatectomy was successfully completed in 10 patients based on %FLV, instead of conventional %LV. 2. Long-term prognosis after right-hepatectomy with /without PVE (n=60). The 3- and 5-year disease-free survival (DFS) rates in the PVE group were significantly greater than those in the non-PVE group (78% and 78% versus 20% and 0%, P = 0.01). The 3- and 5-year overall survival (OS) rates in the PVE group were also higher than those in the non-PVE group (72% and 72% versus 57% and 12%, P 〈 0.05). By multivariate analysis, independent prognostic factors for DFS were application of PVE (HR3.59), Multiple tumor (HR3.57), Fibrosis stage F3–4 (HR2.81), and protein induced by vitamin K absence or antagonists-II (PIVKA-II) ≥678AU/ml (HR2.69). 3. Prevention of intrahepatic metastases in unresectable HCCs in hemi-liver (n=40). The 3-year intrahepatic recurrence rates in the non-portal-embolized area was 58.8% and 81.8%, and the 5-year OS was 38.2% and 8.5%, in the PVE/TACE group and TACE group, respectively. The former rates were sinificantly higher (P 〈 0.05). Conclusions: PVE can improve resectability, and might improve disease-free and overall survival for patients with both resectable and unresectable HCC.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2012
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  • 7
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 30, No. 4_suppl ( 2012-02-01), p. 100-100
    Abstract: 100 Background: AVAGAST study showed regional differences in efficacy, including notable differences in progression free survival (PFS) and overall survival in the PL arm. In Japan, there is a certain number of pts with minimal peritoneal metastasis (PM) diagnosed only by laparoscopy or open surgery, which seems unusual in Western as well as in other Asian countries, and it might have led the differences. Therefore, an exploratory analysis was conducted among the PL arm to examine pt characteristics including PM associated with differences in outcome between JPN and ROW. Methods: We compared PFS of PL arm between pts enrolled from JPN and those from ROW. Hazard ratio (HR) and its 95% confidence interval (95%CI) between JPN and ROW were calculated using Cox’s proportional hazard model for each major covariates (disease status, performance status, prior gastrectomy, prior (neo)adjuvant chemotherapy, age, sex, primary site, liver metastasis (mets), number of metastatic sites, disease measurability, histologic type, maximum of tumor size, sum of tumor size, bone mets, PM and only PM) Results: 188 pts from 14 sites were enrolled from JPN, of which 94 pts were randomized to PL arm. Compared with 293 pts from ROW in PL arm, PFS tend to be favorable in JPN. Subgroups of JPN without liver mets, with diffuse or mixed type gastric cancer (GC), with PM and with only PM were clearly favorable than that of ROW. The difference in subgroup with PM was especially large with lower confidence limit of 1.21. When the pts with only PM were excluded, the difference of PFS in PL arm between JPN and ROW became smaller ( Table ). Conclusions: In this exploratory analysis, pts with PM in JPN had a better prognosis than ROW pts. Understanding this unique pt population may provide insight to the regional differences in outcome noted on this study. [Table: see text]
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2012
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  • 8
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 34, No. 15_suppl ( 2016-05-20), p. e22516-e22516
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2016
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  • 9
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 39, No. 15_suppl ( 2021-05-20), p. 11524-11524
    Abstract: 11524 Background: Pimitespib (PIM) is a novel class of orally active selective HSP90 inhibitors. KIT and PDGFRA are clients of HSP90 for their functional stability; therefore, HSP90 is a rational therapeutic target on GIST in pts with acquired resistance, such as secondary mutation in KIT, to approved tyrosine kinase inhibitors. A phase II trial showed clinical activity of PIM in pts with advanced GIST refractory to standard treatments whose medical need remains unmet. This phase III trial evaluated the efficacy and safety of PIM for this unmet clinical need. Methods: Eligible pts had histologically confirmed advanced GIST refractory to IM, SU, and REG, ≥1 measurable lesion, and ECOG performance status 0 or 1. Pts were randomized 2:1 to receive either PIM 160 mg once daily on a 5-days-on/ 2-days-off schedule or PL. Pts eligible for unblinding at the time of progressive disease were allowed to crossover to open-label PIM. The primary endpoint was progression-free survival (PFS) by blinded central radiological review based on modified RECIST 1.1. Secondary endpoints included overall survival (OS), PFS in the pts crossed over to PIM (secondary PFS), and safety. Crossover-adjusted OS was derived using the rank preserving structural failure time (RPSFT) model. Exploratory endpoints included pharmacogenomics (PGx). Results: From Oct 2018 to Apr 2020, 86 pts were randomized to receive either PIM (n = 58) or PL (n = 28). Baseline characteristics were well balanced between the two arms. Median PFS was 2.8 months (mo) (95% CI: 1.6–2.9) for PIM vs. 1.4 mo (95% CI: 0.9–1.8) for PL. The hazard ratio (HR) for PFS was 0.51 (95% CI: 0.30–0.87) ( p = 0.006, stratified log-rank test). Median OS was 13.8 mo (95% CI: 9.2–not reached) for PIM vs. 9.6 mo (95% CI: 5.5–not reached) for PL (HR for OS 0.63; p = 0.081), with 60.7 % of PL pts crossed over to PIM; secondary PFS was 2.7 mo (95% CI: 0.7–4.1). The RPSFT-adjusted median OS of PL was 7.6 mo (adjusted HR for OS 0.42; p = 0.007). Furthermore, the results of PGx analysis suggested that PIM was also effective in pts with secondary KIT mutation detected from blood samples. The most common ( 〉 5%) grade 3 or higher adverse events (AEs) in PIM/PL were diarrhea (13.8%/0%), anemia (6.9%/10.7%), decreased appetite (6.9%/0%), and tumor hemorrhage (5.2%/0%). AEs leading to PIM/PL study discontinuation were observed in 4/2 pts (6.9%/7.1%), respectively. Conclusions: This randomized trial demonstrated that PIM significantly improved PFS with OS prolongation in pts with advanced GIST refractory to IM, SU, and REG, as a HSP90 inhibitor for the first time. PIM was tolerated and AEs were manageable. With a mechanism of action different from that of standard therapies, PIM has the potential to be a new standard treatment in GIST. Clinical trial information: JapicCTI-184094.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2021
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  • 10
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 33, No. 15_suppl ( 2015-05-20), p. e22011-e22011
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2015
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