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  • American Society of Clinical Oncology (ASCO)  (49)
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  • American Society of Clinical Oncology (ASCO)  (49)
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  • 1
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2014
    In:  Journal of Clinical Oncology Vol. 32, No. 3_suppl ( 2014-01-20), p. 53-53
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 32, No. 3_suppl ( 2014-01-20), p. 53-53
    Abstract: 53 Background: MET, receptor for hepatocyte growth factor (HGF), has been proposed as a therapeutic target in gastroesophageal cancer (GEC). The purpose of this study was to evaluate MET expression in Chinese patients with resectable gastric or gastroesophageal junction (GEJ) adenocarcinoma and to correlate expression with clinicopathologic parameters and prognosis. Methods: MET protein expression was assessed by immunohistochemistry (IHC) in paraffin-embedded tissues from resected tumor specimens. MET IHC was conducted using the CONFIRM SP44 anti-MET monoclonal antibody (Ventana Medical Systems Inc., Tucson, AZ). Four MET IHC scores were defined: 3+ (≥50% of tumor cells staining with strong intensity); 2+ (≥50% of tumor cells with moderate or higher staining, but 〈 50% with strong intensity); 1+ (≥50% of tumor cells with weak or higher staining, but 〈 50% with moderate or higher intensity); or 0 (no staining, or 〈 50% of tumor cells with any intensity) (Spigel et al, J Clin Oncol 2011;29:Suppl, Abst 7505). Kaplan-Meier was used to estimate OS and differences between MET subgroups were compared using the log-rank test. Univariate survival analysis was performed using the stratified Cox model. Results: 442 resected gastric adenocarcinoma samples were collected from patients who underwent surgery between Sept 2007 and Feb 2010. After excluding patients with missing survival, MET, tumor location, differentiation status and stage data, 362 samples were analyzed. Stage II and III accounted for 23% and 59%, respectively. MET prevalence by IHC was: 3+, 5.5%; 2+, 19.6%; 1+, 37.0%; 0, 37.9%. At the OS cut-off, 15 Apr 2012, median follow-up was 35.3 months (range 5.9–49.8 months). The group with MET IHC scores of 2+ or 3+ had significantly shorter OS compared to those with scores of 0 or 1+. The 2-year survival rate was 64% in the 2+/3+ group and 73% in the 0/1+ group (p=0.047). The HR for MET 2+/3+ versus 0/1+ was 1.65 (95% CI: 1.13–2.39, p=0.009), stratified by stage, tumor location and differentiation status. Conclusions: MET expression in resected tissue from Chinese patients with GEC was correlated with poor prognosis. This finding further supports the development of anti-MET agents in this patient population.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2014
    detail.hit.zdb_id: 2005181-5
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  • 2
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2021
    In:  Journal of Clinical Oncology Vol. 39, No. 15_suppl ( 2021-05-20), p. e16096-e16096
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 39, No. 15_suppl ( 2021-05-20), p. e16096-e16096
    Abstract: e16096 Background: Gastric cancer (GC) is the second cause of cancer-related death and metastasis is an important cause of death. Considering difficulties in searching for metastatic driver mutations, we tried a novel strategy to identify early drivers in primary gastric tumors. In this study, we conducted an integrative genomic analysis on GC patients and identified early drivers that lead to metastases. Methods: Tumors and matched normal tissues from 400 Chinese GC patients were characterized by whole-exome sequencing (WES), transcriptome sequencing and targeted exome sequencing (TES), especially the comparative analysis results between higher metastatic potential (HMP) group with T1 stage and lymph-node metastases, and lower metastatic potential (LMP) group without lymph-nodes or distant metastases. Functional experiments on candidate driver mutations were applied in GC cell lines to explore their roles in metastasis and immune escape. Results: HMP group presented higher mutation load and heterogeneity, enrichment in immunosuppressive signaling, lower tumor purity, more stromal and immune cell infiltration than LMP group. We identified 262 differentially expressed mRNA, lncRNA and miRNA between HMP and LMP group (with more than twice proportion of 2-fold increased or decreased tumor than normal tissue in HMP than LMP group, and with significantly 2-fold higher or lower in HMP tumors than LMP tumors). 168 candidate prometastatic mutations were found by WES and 8 were selected for following TES to detect their association with distant metastasis. We found that four candidate mutations were related to distant metastasis and mutated TP53 and MADCAM1 were significantly associated with poor metastasis-free survival. It’s worth noting that though with low mutational rate, MADCAM1 mutations were only observed in patients with metastasis within three years after surgery or at diagnosis. We demonstrated that MADCAM1-mutated proteins act as GOF mutants and could not only directly promote cancer cells migration, but also could trigger tumor metastasis by establishing complicated immunosuppressive microenvironment, including promoting PD-L1-mediated immune escape and reprogramming tumor-associated macrophages (TAMs). Conclusions: Our results showed that the GCs with different metastatic potential are distinguishable at the genetic level. A number of potential metastatic driver mutations was revealed in this study including known cancer-associated genes TP53. We also discovered some novel driver mutations, such as MADCAM1. The results indicate driver mutations in early-onset metastatic GC could promote metastasis not only by directly empower cancer cells to disseminate but also by establishing an immunosuppressive microenvironment. This study increased the understanding of molecular landscape of GC patients and provided possibility for future target therapy.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2021
    detail.hit.zdb_id: 2005181-5
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  • 3
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2022
    In:  Journal of Clinical Oncology Vol. 40, No. 16_suppl ( 2022-06-01), p. e12625-e12625
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 40, No. 16_suppl ( 2022-06-01), p. e12625-e12625
    Abstract: e12625 Background: Triple-negative breast cancer (TNBC) patients with residual disease after neoadjuvant chemotherapy (NAC) have high risk of recurrence. In this study, we developed a novel organoid culture method for growing TNBC patient samples after NAC, with the goal of generating models that more faithfully recapitulates the key features of the primary tumor for screening personalized drugs. Methods: We established organoid lines derived from TNBC patients who had residual tumors after anthracycline and taxane±platinum based NAC as well as normal human mammary tissues. The histopathology signatures of organoid lines were characterized by H & E staining and immunohistochemistry. The genetic and transcriptional features of organoids were analyzed by targeted sequencing and RNA sequencing. A set of clinical drugs were screened for their ability to suppress cancer organoids in vitro and the consistency was also analyzed between clinical response and drug efficacy of organoid models. Results: A total of 10 cancer organoid lines were successfully established, and cultured stably for more than 4 months. For comparison, 2 organoids derived from normal mammary tissues were generated as well. Our success rate for establishing cancer organoids from TNBC patient samples after NAC was 83% (10 out of 12 samples), and for organoids from normal mammary tissues, it was 100% (2 out of 2 samples). These organoid lines closely recapitulated the histopathology, genetic and transcriptional signature, and intratumor heterogeneity of the primary tissues. We found that active PI3K/AKT/mTOR pathways signaling is always required for cancer organoids from TNBC patient samples after NAC, while Wnt pathway activation is dispensable for generation of them in comparison to the organoid cultures from normal breast tissues. More importantly, we found that the anti-Trop-2 antibody-drug conjugate sacituzumab govitecan (IMMU-132) showed higher sensitivity to most cancer organoids from TNBC patient samples after NAC (8 out of 10 samples) with IC 50 ranging from 0.3 nM to 86 nM in contrast to 5-FU (5 out of 10 samples) with IC 50 ranging from 0.9 μM to 10.2 μM in vitro, whose prodrug capetabine is considered as a standard option in the postneoadjuvant setting. These results were also confirmed in patient-derived tumor xenograft models. The consistency of drug efficacy in the established cancer organoids and the patient responses in the clinic reached to 70% (7 out of 10 samples). Conclusions: We established a novel organoid culture system for TNBC patient samples after NAC, which was potentially a useful platform to explore molecular characteristics of TNBC patients after NAC and discover personalized drugs for intensive treatment.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2022
    detail.hit.zdb_id: 2005181-5
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  • 4
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2020
    In:  Journal of Clinical Oncology Vol. 38, No. 15_suppl ( 2020-05-20), p. e16113-e16113
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 38, No. 15_suppl ( 2020-05-20), p. e16113-e16113
    Abstract: e16113 Background: Like most cancers, early diagnosis of colorectal cancer (CRC) contributes to a good prognosis. Recently, some studies indicated that mutation gene signatures have good performances in predicting the treatment and prognosis in CRC patients. However, incomplete understanding of the genotype is not conducive to proper treatment. The objective was to give further genetic insights into CRC and provide more comprehensive references for clinical practice. Methods: In the training group, the whole genome sequencing (WGS), clinical, and demographic data of 531 patients were downloaded from The Cancer Genome Atlas (TCGA). The validation group contained 53 patients, which were collected in Tianjin Medical University Cancer Institute and Hospital (Tianjin, China) from April 2014 to November 2018. The fresh tissues collected within 24 hours after operation were used to extract genomic DNA, and then sequenced with targeted next-generation sequencing (NGS) technology to examine somatic mutations and analyze relevant gene concerning clinical indicators. The correlation between gene variation distribution and various indexes such as cancer species, stage, total survival period, sex, age and race were evaluated. Results: A total of 44 mutant genes with mutation frequencies above 5% were found in both TCGA cases and validated cases. Mutations of TP53, APC, KRAS, BRAF and ATM covered 97.55% of TCGA population and 83.02% validation patients, which were proved to be associated with the development of CRC and could be used as a diagnostic signature. Importantly, mutations of TP53, PIK3CA, FAT4, FMN2 and TRRAP had a remarkable difference between early (I/II) and advanced (III/IV) stage patients (P 〈 0.0001). Besides, we also confirmed that PIK3CA, LRP1B, FAT4 and ROS1 were a mutated gene signature for the prognosis, LRP1B portended to a higher of recurrence and shorter progression-free survival (PFS); mutation of FAT4 portended to a lower of recurrence and longer PFS, which could predict the recurrence and survival of CRC patients. Conclusions: We have indicated gene mutation signatures related to the diagnosis, pathological classification, staging and prognosis in CRC, which provides further insights into the study of CRC genotype. It is helpful to further improve the personalized diagnosis and treatment.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2020
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  • 5
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 39, No. 7 ( 2021-03-01), p. 748-756
    Abstract: Effective interventions to improve prognosis in metastatic esophagogastric cancer (EGC) are urgently needed. We assessed the effect of the early integration of interdisciplinary supportive care for patients with metastatic EGC on overall survival (OS). PATIENTS AND METHODS An open-label, phase III, randomized, controlled trial was conducted at Peking University Cancer Hospital & Institute. Patients with previously untreated metastatic EGC were enrolled. Patients were randomly assigned (2:1) to either early interdisciplinary supportive care (ESC) integrated into standard oncologic care or standard care (SC). ESC was provided by a team of GI medical oncologists, oncology nurse specialists, dietitians, and psychologists; patients in the SC group received standard oncologic care alone. The primary end point was OS in the intention-to-treat population. RESULTS Between April 16, 2015, and December 29, 2017, 328 patients were enrolled: 214 in the ESC group and 114 in the SC group. At the data cutoff date of January 26, 2019, 15 (5%) patients were lost to follow-up. The median number of cycles of first-line chemotherapy was five (interquartile range [IQR], 4-7) in the ESC group and four (IQR, 2-6) in the SC group. The median OS was 14.8 months (95% CI, 13.3 to 16.3) in the ESC group and 11.9 months (95% CI, 9.6 to 13.6) in the SC group (hazard ratio, 0.68; 95% CI, 0.51 to 0.9; P = .021). CONCLUSION The early integration of interdisciplinary supportive care is an effective intervention with survival benefits for patients with metastatic EGC. Further optimization and standardization are warranted.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2021
    detail.hit.zdb_id: 2005181-5
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  • 6
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2021
    In:  Journal of Clinical Oncology Vol. 39, No. 15_suppl ( 2021-05-20), p. e23538-e23538
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 39, No. 15_suppl ( 2021-05-20), p. e23538-e23538
    Abstract: e23538 Background: Perivascular epithelioid cell tumor (PEComa) is a rare form of mesenchymal neoplasms. No clinical trial of large sample size regarding medical treatment of PEComa has been reported so far. Previous retrospective studies with small sample size have showed efficacy of mTOR inhibitors as treatment of PEComa. This study aimed to analyze the clinicopathological features of PEComa, and the efficacy of mTOR inhibitor in advanced PEComa. Methods: Medical information of patients diagnosed with PEComa and treated in Fudan University Shanghai Cancer Center were collected. Survival analysis was performed by Kaplan-Meier method. Radiological response was assessed according to RECIST version1.1. Results: A total of 17 patients were treated in our center during June 2007 to June 2020. PEComa mostly occurs in middle-aged women. The most common primary sites are pelvis, lung and abdomen. Relapse usually occurs within 2 years after radical surgery. Radical surgery is the main treatment for PEComa of limited stage, and remains the main option for those with limited recurrent lesions. Of the 13 patients with advanced malignant PEComa in our cohorts, the objective response rate of mTOR inhibitors in advanced malignant PEComa was 45.5%, and median progression-free survival was 27.7 months (95% CI 4.7-50.5 months). 2 patients discontinued mTOR inhibitor treatment due to pneumonitis combined with dyspnea and fever respectively. Conclusions: For advanced malignant PEComa, mTOR inhibitors are effective. Lung toxicity of mTOR inhibitor should be monitored.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2021
    detail.hit.zdb_id: 2005181-5
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  • 7
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 38, No. 15_suppl ( 2020-05-20), p. 4038-4038
    Abstract: 4038 Background: The most commonly used treatment methods for metastatic colorectal cancer (mCRC)are systemic chemotherapy, molecular targeted therapy and local treatment. The main chemotherapy drugs for mCRC include Irinotecan, Oxaliplatin and 5-Fu. V308 Research shows that FOLFOX and FOLFIRI can be standard first or second-line of each other in the treatment of metastatic colorectal cancer. However if the first-line treatment regimen containing 5-FU fails, whether it is necessary to re-challenge 5-FU when Irinotecan is applied in the second line is unknown. There is no head-to-head comparative study to answer whether the FOLFIRI regimen is better than the Irinotecan monodrug. Therefore, it is necessary to carry out a comparative study of FOLFIRI Versus Irinotecan monodrug to observe whether adding 5-Fu on the basis of Irinotecan can improve the therapeutic effect. Methods: This was a randomized phase III trial. Patients from 5 centers in China with metastatic colorectal adenocarcinoma, for whom first-line of chemotherapy including oxaliplatin combined with fluorouracil drugs (combined or not combined with targeted therapy) had failed, were enrolled. 172 patients with mCRC were randomly treated with FOLFIRI or Irinotecan monodrug were included in this study. FOLFIRI group: Irinotecan 180mg/m 2 ; Lecovorin 400mg/m 2 ; 5-Fu 400mg/m 2 ; 5-Fu 2400mg/m 2 CIV 46h. Irinotecan monodrug group 180mg/m 2 , The regimen was repeated every 2 weeks. The primary endpoint is PFS, and this clinical trail is a superiority trial. Results: ITT (Intention-To-Treat) analysis: Among 172 patients, 10 had PR, 93 had SD, and 63 had PD, 6 patients have not received efficacy evaluation yet. The ORR was 5.68% VS. 5.95%, and the DCR was 61.36% and 54.76% in FOLFIRI group and Irinotecan monodrug group, respectively. Adverse reactions included neutropenia, stomatitis, diarrhea, fatigue, abnormal liver enzymes, pyrexia, arrhythmia, nausea and most of these were grade 1-2. The dose reduction rate induced by drug tocixity of was 13.64% and 7.14% in FOLFIRI group and Irinotecan monodrug group, respectively. Conclusions: These data show that Irinotecan monodrug has the similar ORR and DCR with FOLFIRI regimen in second-line treatment of mCRC. Irinotecan monodrug has lower adverse effect. Clinical trial information: NCT02935764 .
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2020
    detail.hit.zdb_id: 2005181-5
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  • 8
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2018
    In:  Journal of Clinical Oncology Vol. 36, No. 15_suppl ( 2018-05-20), p. 11545-11545
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 36, No. 15_suppl ( 2018-05-20), p. 11545-11545
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2018
    detail.hit.zdb_id: 2005181-5
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  • 9
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2019
    In:  Journal of Clinical Oncology Vol. 37, No. 15_suppl ( 2019-05-20), p. e21019-e21019
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 15_suppl ( 2019-05-20), p. e21019-e21019
    Abstract: e21019 Background: There is no standard treatment for patients with advanced mucosal melanoma (AMM). Recombinant human endostatin (Endostar) combined with chemotherapy had been showed to improve the efficacy of advanced melanoma. This real world study was aimed to observe the efficacy and safety of endostar continuous intravenous infusion (Civ) combined with chemotherapy in patients with AMM. Methods: 23 patients with AMM treated with endostar plus dacarbazine or temozolomide plus cisplatin between April 2017 and December 2018 were collected. Endostar was given 105mg/m 2 Civ168h (unlike the usual use of 7.5mg/m 2 /d d1-14) . 5 patients with local advanced disease received concurrent radiotherapy. Results: There were 11 males (48%) and 12 females (52%), with a median age of 58 years (30-72 years). Primary lesions were located in the nasal cavity and paranasal sinuses in 9 cases (39%), anorectum in 9 cases (39%), vagina in 3 cases (13%), esophagus in 1 case (4%), and choroid in 1 case (4%). There were 7 patients with local advanced disease and 16 patients with metastatic disease. 1 patient received prior anti-PD1 therapy, 1 patient received prior chemotherapy, the other 19 patients received no prior systemic therapy. A total of 21 patients underwent gene detection, there were 2 patients (10%) with BRAF mutation (one with V600E mutation, one with G606E mutation), 7 patients (33%) with NRAS mutation (3 with exon 2 mutation, 4 with exon 3 mutation), and 1 patient (5%) with KIT exon 11 mutation. Overall, 4 patients (13%) had CR, 4 patients (22%) had PR, 10 patients had SD (43%), and 5 patients (22%) had PD, resulting in a RR of 35% and a DCR of 78%. The 4 patients with CR were with localized disease and received concurrent radiotherapy. The RR were 44%, 33%, 33%, 0% and 0%, and the DCR were 100%, 67%, 67%, 0%, and 100% in patients with melanoma of the nasal cavity, anorectum, vagina, esophagus and choroid respectively. The median PFS was 7.5 months (95% CI: 1.0-14.0months). The median OS was 14.7 months (95% CI: 5.0-24.4months). Grade III/IV adverse events were leucopenia (13%), thrombocytopenia (13%), anemia (4%), nausea and vomiting (4%), elevated transaminase (4%), nasal hemorrhage (4%) and intestinal obstruction (4%). Conclusions: Endostar combined with chemotherapy is effective and safe in the treatment of AMM, especially for patients with melanoma of the nasal cavity and paranasal sinuses. For mucosal melanoma patients with local advanced disease, concurrent chemoradiotherapy may be a good choice. It deserves further study.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2019
    detail.hit.zdb_id: 2005181-5
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  • 10
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 34, No. 15_suppl ( 2016-05-20), p. 10558-10558
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2016
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