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  • American Society of Clinical Oncology (ASCO)  (36)
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  • 1
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 15_suppl ( 2019-05-20), p. 1001-1001
    Abstract: 1001 Background: Pyrotinib, an irreversible pan-ErbB receptor tyrosine kinase inhibitor, showed promising anti-tumour activity and acceptable tolerability in patients with HER2+ metastatic breast cancer (MBC) in phase 1/2 trials. Methods: This double-blinded, multicentre, randomised phase 3 trial was conducted in Chinese patients with HER2+ MBC previously treated with taxanes and trastuzumab. Patients were randomly assigned (2:1) to receive 400 mg pyrotinib or placebo orally once daily for 21-day cycles in combination with capecitabine (1000 mg/m 2 orally twice daily on days 1–14). The primary endpoint (IRC-assessed progression free survival [PFS]) was assessed in patients who received ≥1 dose of study treatment. Patients whose disease progressed on placebo plus capecitabine received subsequent single agent pyrotinib. Results: Between July, 2016 and November, 2017, 279 patients were randomised to pyrotinib plus capecitabine (n = 185) or placebo plus capecitabine (n = 94) arms. The median PFS was 11.1 months (95% CI 9.66, 16.53) in the pyrotinib plus capecitabine arm and 4.1 months (95% CI 2.79, 4.17) in the placebo plus capecitabine arm. seventy-one patients in placebo plus capecitabine arm received subsequent pyrotinib, showing single-agent response rate of 38.0% (95%CI 26.7%, 49.3%) and median PFS of 5.5 months (95% CI 4.07, 6.90). The most frequent (≥5%) treatment-related ≥ grade 3 adverse events were diarrhoea (30.8% vs 12.8% ) and hand-foot syndrome (15.7% vs 5.3%). Conclusions: In women with HER2+ MBC previously treated with taxanes and trastuzumab, pyrotinib plus capecitabine yield statistically significant better PFS. Pyrotinib monotherapy showed anti-tumour activity. Clinical trial information: NCT02973737. [Table: see text]
    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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  • 2
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 29 ( 2019-10-10), p. 2610-2619
    Abstract: Pyrotinib, an irreversible pan-ErbB inhibitor, showed promising antitumor activity and acceptable tolerability in a phase I trial. We assessed the efficacy and tolerability of pyrotinib versus lapatinib, both in combination with capecitabine, in women with human epidermal growth factor receptor 2 (HER2)-positive metastatic breast cancer in an open-label, multicenter, randomized phase II study. PATIENTS AND METHODS Chinese patients with HER2-positive relapsed or metastatic breast cancer previously treated with taxanes, anthracyclines, and/or trastuzumab were assigned (1:1) to receive 400 mg pyrotinib or lapatinib 1,250 mg orally once per day for 21-day cycles in combination with capecitabine (1,000 mg/m 2 orally twice per day on days 1 to 14). The primary end point was investigator-assessed overall response rate per Response Evaluation Criteria in Solid Tumors (RECIST), version 1.1. RESULTS Between May 29, 2015, and March 15, 2016, 128 eligible patients were randomly assigned to the pyrotinib (n = 65) or lapatinib (n = 63) treatment groups. The overall response rate was 78.5% (95% CI, 68.5% to 88.5%) with pyrotinib and 57.1% (95% CI, 44.9% to 69.4%) with lapatinib (treatment difference, 21.3%; 95% CI, 4.0% to 38.7%; P = .01). The median progression-free survival was 18.1 months (95% CI, 13.9 months to not reached) with pyrotinib and 7.0 months (95% CI, 5.6 to 9.8 months) with lapatinib (adjusted hazard ratio, 0.36; 95% CI, 0.23 to 0.58; P 〈 .001). The most frequent grade 3 to 4 adverse events were hand-foot syndrome in 16 of 65 patients (24.6%) in the pyrotinib group versus 13 of 63 (20.6%) in the lapatinib group; diarrhea in 10 patients (15.4%) versus three patients (4.8%), respectively; and decreased neutrophil count in six patients (9.2%) versus two patients (3.2%), respectively. CONCLUSION In women with HER2-positive metastatic breast cancer previously treated with taxanes, anthracyclines, and/or trastuzumab, pyrotinib plus capecitabine yielded statistically significant better overall response rate and progression-free survival than lapatinib plus capecitabine in this randomized phase II trial.
    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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  • 3
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 41, No. 16_suppl ( 2023-06-01), p. e13056-e13056
    Abstract: e13056 Background: For patients with hormone receptor-positive HER2-negeative metastatic breast cancer (HR+HER2-MBC), switching to another cyclin-dependent kinase 4/6 inhibitor (CDK4/6i) or target drug with different mechanism are reasonable treatment strategies post-CDK4/6i. However, no clinical data has been reported on which of the two strategies is more effective. We performed a retrospective cohort study to evaluate the efficacy of abemaciclib-based therapy versus tucidinostat-based therapy after progression on palbociclib. Methods: We identified patients with HR+/HER2- MBC who received abemaciclib-based therapy or tucidinostat-based therapy after progression on palbociclib from seven research centers in China. The primary endpoint was progression-free survival (PFS), the secondary endpoints were objective response rate (ORR), clinical benefit rate (CBR), PFS in patients with PIK3CA-mutant and PIK3CA wild-type, and safety. Results: Between Apr 1 st 2020 and September 30 th 2022, a total of 149 patients were included, of whom 73 patients received abemaciclib plus endocrine therapy(ET), and 76 patients received tucidinostat plus ET. The majority of patients had visceral disease (124/149, 83.2%) and ≥3 metastatic sites (76/149, 51.0%) at baseline, one third of patients (48/149, 32.2%) had previously been treated ≥3 lines of endocrine therapy in MBC setting. More patients received sequential therapy after palbociclib in abemaciclib group(49.3%) than that in tucidinostat group(30.3%). There were no statistically significant differences in other baseline characteristics between the two groups. Clinical benefit rate (CBR) was 38.4% (28/73) in abemaciclib group and 17.1% (13/76) in ET plus tucidinostat group (p=0.0037). There was significant difference in PFS between abemaciclib group and tucidinostat group in both the whole population (5.0 months vs. 2.0 months; HR 0.44; 95%CI 0.31-0.64; P<0.001) and propensity score matched population. PIK3CA mutations occurred in 44.20% of patients who had undergone multigene sequencing. PIK3CA-mutant showed a negative effect on PFS of abemaciclib-based therapy. The most common any grade and grade 3-4 adverse events was neutropenia in either group. Common non-hematological toxicity occurred in abemaciclib group was diarrhea, and were increased AST, nausea, vomiting in tucidinostat group. Conclusions: Abemaciclib-based therapy improved clinical benefit rate and prolonged PFS compared with tucidinostat-based therapy, providing a superior treatment option in patients progressed on palbociclib.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2023
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  • 4
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2023
    In:  Journal of Clinical Oncology Vol. 41, No. 16_suppl ( 2023-06-01), p. e13551-e13551
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 41, No. 16_suppl ( 2023-06-01), p. e13551-e13551
    Abstract: e13551 Background: We are building a clinical decision support system (CSCO AI) for breast cancer patients to improve the efficiency of clinical decision-making. We aimed to assess cancer treatment regimens, in neoadjuvant therapy, adjuvant chemotherapy, adjuvant endocrine therapy, first line therapy and second line therapy, given by CSCO AI and clinicians. Methods: 400 breast cancer patients were screened from the CSCO database. Clinicians with similar levels were randomly assigned one of the volumes (200 cases). After that, clinicians with guidelines were asked to answer the same cases again. CSCO AI was asked to assess all cases. Three reviewers were independently asked to evaluate the regimens from clinicians and CSCO AI. Regimens were masked before evaluation. The primary outcome was the proportion of high-level conformity (HLC), which were defined as the proportions of regimens in accordance with CSCO guidelines. Results: The overall concordance between clinicians and CSCO AI was 67.4% (2350/3500). After referring to the guideline, a total of 22.6% (792/3500) regimens were modified by clinicians, 12.9% (451/3500) had a higher grades and 9.7% (341/3500) had a lower grades. In early stage, the concordance was elevated with statistical significance from 71.3% (1497/2100) to 76.1% (1598/2100, p<0.001). In the metastatic stage, the concordance was improved form 61.7% (864/1400) to 66.0% (924/1400, p=0.018). HLC in CSCO AI was 95.8% (95%CI:94.0%-97.6%), significantly higher than that in clinicians (90.8%, 95%CI:89.8%-91.8%) and in clinicians with guidelines (92.1%, 95%CI:91.0%-93.4%). In early stage, high-level conformity in CSCO AI was 95.7%, with no statistical significance when compared with clinicians (92.7%, p=0.078) and clinicians with guidelines (92.3%, p=0.050). In metastatic stage, high-level conformity in clinicians was only 88.0%, lower than that in CSCO AI (96.0%, p=0.001). However, after referring guidelines, high-level conformity in clinicians was elevated to 91.9%, with no significant difference when compared with that in CSCO AI (p=0.058). Considering professions, the high level conformity of surgeons was 85.9%, lower than that of CSCO AI (OR=0.25,95%CI: 0.16-0.41). The most significant difference in HLC was in first-line therapy (OR=0.06, 95%CI:0.01-0.41). When clinicians were divided according to their levels, there was no statistical significance between CSCO AI and higher-level clinicians. Conclusions: Clinical decision support for breast cancer was superior for most process outcomes except for second-line therapy. The improvements in process outcomes suggest that CSCO AI can be widely used in clinical practice.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2023
    detail.hit.zdb_id: 2005181-5
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  • 5
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 38, No. 15_suppl ( 2020-05-20), p. e13022-e13022
    Abstract: e13022 Background: Anti-HER2 agents combined with chemotherapy is the treatment strategy for treatment-naive HER2-positive relapsed or metastatic breast cancer. This pooled study was conducted to investigate the efficacy of pyrotinib plus capecitabine as first-line treatment in patients with HER2-positive relapsed or metastatic breast cancer. Methods: Data were derived from three randomized controlled trials. In the phase 2 (NCT02422199) and the PHOEBE phase 3 (NCT03080805) studies, patients were randomized to receive pyrotinib plus capecitabine or lapatinib plus capecitabine. In the PHENIX phase 3 (NCT02973737) study, patients were randomly assigned and given pyrotinib plus capecitabine or placebo plus capecitabine. Patients who had received neither anti-HER2 agents nor chemotherapy for the relapsed or metastatic disease were included in the analyses, and the pooled tumor response data (per blinded independent central review) were reported herein. Results: In the pooled analysis of all three studies, 145 patients received pyrotinib plus capecitabine. The median progression free survival (PFS) was 12.4 months (95% CI, 11.1 months to not reached). The objective response rate (ORR) reached 72.4% (95% CI, 64.4% to 79.5%). In the pooled analysis involving the phase 2 and PHOEBE phase 3, 84 patients were treated with pyrotinib plus capecitabine and 62 patients with lapatinib plus capecitabine. The PFS was significantly prolonged with pyrotinib plus capecitabine vs lapatinib plus capecitabine (median, 12.4 months [95% CI, 11.1 months to not reached] vs 8.2 months [95% CI, 5.5 to 9.7 months] ; hazard ratio, 0.40 [95% CI, 0.25 to 0.66]; p = 0.0001). The ORR was 71.4% (95% CI, 60.5% to 80.8%) with pyrotinib plus capecitabine compared with 58.1% (95% CI, 44.8% to 70.5%) with lapatinib plus capecitabine. Conclusions: The pooled analysis demonstrated pyrotinib plus capecitabine was efficacious as first-line therapy in patients with HER2-positive relapsed or metastatic breast cancer, offering a potent treatment option for these patients.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
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    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2020
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  • 6
    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. 1066-1066
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 15_suppl ( 2019-05-20), p. 1066-1066
    Abstract: 1066 Background: PD-1/PD-L1 blockade monotherapy delivered positive outcomes in early-phase trials in advanced triple-negative breast cancer (TNBC). However, t he highest objective response rate (ORR) is 18.5%. IMPassion130 trial has demonstrated that only PD-L1 + TNBC had overall survival benefit from anti-PD-L1 antibody combined with chemotherapy. Preclinical studies found that antiangiogenic therapy could sensitize anti-PD-1 treatment via inducing PD-L1 expression and increasing CTLs infiltration in tumor microenvironment. Thus, we designed a phase II, open-label trial (NCT03394287) of SHR-1210 (anti-PD-1 antibody) in combination with apatinib (VEGFR2 inhibitor) in patients with advanced TNBC. Methods: 20-58 advanced TNBC patients whose systemic therapy lines in the metastatic setting was less than 3, will be randomly (1:1) enrolled from Sun Yat-sen Memorial Hospital to receive either SHR-1210 200mg Q2W plus apatinib 250mg, continuous dosing (d1-d14), or SHR-1210 200mg Q2W plus apatinib 250mg, intermittent dosing (d1-d7), until progression or unacceptable toxicities. Primary endpoint was ORR. Secondary end points included PFS, DCR, TTR, DoR, CBR, one year-OS and toxicity. Results: Until Jan 30, 2019, 34 patients were enrolled, 10 in the intermittent dosing arm, and 24 in the continuous dosing arm. 26 (76.5%) patients had prior systemic therapy in the metastatic setting. At the cutoff date (Jan 30, 2019), 28 patients were evaluable for ORR as per RECIST. The ORR was 47.4% (9 of 19) in the continuous dosing cohort, and no confirmed objective response was found in the intermittent dosing arm. The DCR was 68.4% in the continuous dosing arm, whereas it was 44.4% in the other arm. The median PFS was 2 months in the intermittent dosing cohort, while it was not reached in the continuous dosing cohort. The most common adverse events (AEs) was fatigue (65.0%), hand-foot syndrome (63.3%), and elevated aspartate aminotransferase and/or alanine aminotransferase (73.3%). There were no treatment-related deaths. Another 5 patients will be enrolled into the continuous dosing arm because of its favorable response. Conclusions: Anti-PD-1 antibody SHR-1210 combined with apatinib demonstrates favorable clinical activity and a manageable safety profile in patients with advanced TNBC. Clinical trial information: NCT03394287.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2019
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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. 1048-1048
    Abstract: 1048 Background: Trastuzumab is the most widely used anti-HER2 agent in patients (pts) with HER2-positive breast cancer, both in (neo)adjuvant and metastatic settings; however, drug resistance is inevitable. This pooled study aimed to investigate the efficacy of pyrotinib plus capecitabine in pts with HER2-positive, trastuzumab-resistant relapsed or metastatic breast cancer. Methods: Data were derived from three randomized controlled trials, including a phase II (NCT02422199) and the PHOEBE phase III (NCT03080805) study comparing pyrotinib plus capecitabine vs lapatinib plus capecitabine and the PHENIX phase III (NCT02973737) study comparing pyrotinib plus capecitabine vs placebo plus capecitabine. Pts with trastuzumab-resistant disease were included in the analyses, including 39 pts who had relapsed within six months after adjuvant trastuzumab and 57 pts who had progressed within three months of trastuzumab treatment for metastatic disease. The pooled tumor response data (per blinded independent central review) were reported herein. Results: In the pooled analysis of all three studies, 63 pts received pyrotinib plus capecitabine. Among them, 28 (44.4%) pts had disease progression or died. The median progression free survival (PFS) was 12.4 months (95% CI, 6.9 to not reached). In total, 40 pts (63.5% [95% CI, 50.4% to 75.3%]) achieved objective response, and the estimated median duration of response (DoR) was 11.1 months (95% CI, 6.9 to not reached). In the pooled analysis involving the phase II and PHOEBE phase III, 43 pts were treated with pyrotinib plus capecitabine and 33 pts with lapatinib plus capecitabine. In total, 18 (41.9%) pts with pyrotinib plus capecitabine and 17 (51.5%) pts with lapatinib plus capecitabine had disease progression or died. The PFS tended to be prolonged with pyrotinib plus capecitabine vs lapatinib plus capecitabine (median, 12.4 months [95% CI, 6.9 to not reached] vs 6.9 months [95% CI, 5.5 to not reached]; hazard ratio, 0.62 [95% CI, 0.31 to 1.24] ; p=0.0864). The objective response rate was 67.4% (95% CI, 51.5% to 80.9%) with pyrotinib plus capecitabine compared with 54.5% (95% CI, 36.4% to 71.9%) with lapatinib plus capecitabine. The estimated median DoR was 11.1 months [95% CI, 6.9 to not reached] vs not reached [95% CI, 4.2 months to not reached] , respectively. Conclusions: Pyrotinib plus capecitabine showed favorable efficacy in pts with HER2-positive, trastuzumab-resistant relapsed or metastatic breast cancer. This combination could be a treatment option for this population.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2020
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  • 8
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 41, No. 17_suppl ( 2023-06-10), p. LBA1013-LBA1013
    Abstract: LBA1013 Background: Checkpoint blockade combined with taxanes based chemotherapy had generated mixed results as first line treatment for metastatic TNBC. Toripalimab, a humanized IgG4K monoclonal antibody specific for PD-1, provided significant clinical efficacy with a favorable safety profile in various solid tumors. The purpose of this study is to compare the efficacy and safety of toripalimab versus placebo, in combination with nab-P for metastatic or recurrent TNBC (NCT04085276). Methods: Patients with initially diagnosed metastatic or recurrent inoperable TNBC were randomized 2:1 to receive toripalimab (240mg, D1, q3w) or placebo along with nab-P on days1, 8 in 3-week cycles. Stratifications included PD-L1 expression, paclitaxel therapy history and line of prior therapy at enrollment. Primary endpoint was progression-free survival (PFS) assessed by a blinded independent central review (BICR) per RECIST v1.1, first in the PD-L1-positive population and then in the ITT population. Secondary endpoints included overall survival (OS) and safety. Results: 531 patients were randomized to toripalimab (n = 353) or placebo (n = 178); 200 and 100 patients, respectively had PD-L1 positive TNBC. At interim analysis, with the median follow-up of 14 months, a statistically significant improvement in PFS by BICR was demonstrated for the toripalimab arm in the PD-L1 positive subgroup (mPFS 8.4 vs 5.6 months; HR = 0.653, 95% CI 0.470-0.906, P = 0.0102). The PFS in the ITT population showed a similar trend (mPFS 8.4 vs 6.9 months, HR = 0.773, 95%CI 0.602-0.994). Descriptive analysis of OS showed a trend towards improved OS in the PD-L1 positive (mOS 32.8 vs 19.5 months; HR = 0.615, 95%CI 0.414-0.914) and the ITT population (mOS 33.1 vs 23.5 months; HR = 0.691, 95% CI 0.513-0.932). No new safety signals were identified. Grade≥3 adverse events (AEs) (56.4% vs 54.3%) and fatal AEs (0.6% vs 3.4%) were similar between arms, while AEs leading to discontinuation of toripalimab/placebo (8.5% vs. 3.4%) and immune-related (irAEs) (40.8% vs. 24.0%) were more frequent in the toripalimab arm. Conclusions: The addition of toripalimab to nab-P provided a significant improvement in PFS for PD-L1 positive metastatic or recurrent TNBC patients receiving first-line treatment with an acceptable safety profile. Patients will be followed for the final PFS and OS analysis. Clinical trial information: NCT04085276 .
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2023
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  • 9
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2023
    In:  Journal of Clinical Oncology Vol. 41, No. 16_suppl ( 2023-06-01), p. 602-602
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 41, No. 16_suppl ( 2023-06-01), p. 602-602
    Abstract: 602 Background: Triple-negative breast cancer (TNBC) is the subtype with the least favorable outcomes. However, TNBC is associated with higher immune cell abundance than other subtypes, making it a good candidate for immunotherapy. Neoadjuvant chemotherapy is the preferred treatment approach for early TNBC. Emerging evidence shows that additional immune checkpoint inhibitors (ICI) in neoadjuvant therapy significantly increases pathological complete response (pCR) and event-free survival in early TNBC. Treatment regimens of paclitaxel and carboplatin (TP) is class I recommendation for TNBC neoadjuvant therapy, the application of ICI with TP regimens is worth exploring. Methods: In this multicenter, open-label, phase II study, patients with untreated, histologically confirmed TNBC in stage II-III (per AJCC 8 th edition) were enrolled. Patients received six cycles of neoadjuvant therapy with tislelizumab at 200 mg once every 3 weeks plus nab-paclitaxel (125 mg/m 2 on days 1 and 8) and carboplatin (at a dose based on an area under the concentration 2 on days 1 and 8) every 3 weeks. Patients who either completed or discontinued the neoadjuvant treatment would undergo definitive surgery. After surgery, the patients received adjuvant tislelizumab every 3 weeks for up to 12 cycles. The primary endpoint was the rate of pCR (ypT0/Tis ypN0). The secondary endpoints included 1-, 2-, 3-year event free survival rates and overall survival rates. Based on the Simon’s Two-Stage design, if 〉 13 of 32 patients achieved pCR, the enrollment would proceed to full accrual of 62 patients as planned. If 〉 29 of 62 patients achieved pCR, we would deem the study to have met the primary endpoint. Results: From Mar 2021 to Jan 2022, 32 patients were enrolled; 18 of them achieved pCR, and therefore the study proceeded to complete the enrollment of 62 patients. At the data cut-off of Oct 13, 2022, 62 patients were enrolled, among which 50 patients received neoadjuvant treatment and underwent definitive surgery. The median age was 50 years. 36 (72.0%) patients had stage II breast cancer at diagnosis. 31 of the 50 patients achieved pCR (ypT0/Tis ypN0), and the pCR rate was 62.0% (95% CI, 47.2-75.4). Patients with immune cell PD-L1 expression ≥10% had numerically higher pCR rate (81.8% vs 53.6%) than those with PD-L1 expression ≥1%. All 50 (100%) patients reported any grade of neoadjuvant treatment-related adverse events (TRAEs). Grade ≥3 TRAEs occurred in 27 (54%) patients. The rate of immune-related adverse events (irAEs) was 34% (17/50), with the common occurring (10%) irAE of hypothyroidism (n = 8, 16%). 2 (4.9%) patients experienced grade ≥3 irAEs. Severe adverse events were reported in 5 (10%) patients. Conclusions: The study has met its primary endpoint. Tislelizumab plus nab-paclitaxel and carboplatin achieved a higher pCR and was generally well tolerated in the neoadjuvant treatment of early TNBC. Clinical trial information: ChiCTR2100041675 .
    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: 2023
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  • 10
    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. e14558-e14558
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 37, No. 15_suppl ( 2019-05-20), p. e14558-e14558
    Abstract: e14558 Background: PD-1/PD-L1 checkpoint blockade immunotherapy is revolution- izing the therapeutic strategy of malignancies. Tumor PD-L1 levels have predictive value in PD-1/PD-L1 checkpoint blockade therapies. Whether PD-L1 expression on circulating tumor cells (CTCs) could serve as an alternative biomarker is of great interest, especially in breast cancer. Methods: We established an immunofluorescence assay for semi-quantitative assessment of the PD-L1 expression levels on CTCs with four categories (PD-L1negative, PD-L1low, PD-L1medium and PD-L1high). 20patients with advanced breast cancerwere enrolled who took PD-1 inhibitortherapy. The CTC numeration and the PD-L1 expression levels were analyzedat the begining and ending of treatment . Results: 20 patients were enrolled, 85%(17/20) were triple-negative breast cancer. 65% of patients had visceral metastases, 60% of patients had ≥3 lines of treatment. Prior the treatment of PD-1 inhibitor, 95% (19/20) patients had CTCs, ranging from1 to 53(median 5). 90% (18/20) had PD-L1positive CTCs, and 75% (15/20) had at least one PD-L1high CTCs. The clinical benefit rate(CBR) rate in PD-L1high patients (26.7%) is much higher than the others (0%). we examined the proportion of PD-L1high CTCs relative to total CTCs. The median proportion of PD-L1high CTCs was 33.3%. Patients with ≥33% PD-L1high CTCs had a significantly longer PFS (median 2.6 vs. 1.4 months( P = 0.027). 100% patients with CBR had PD-L1 high CTCs decreased and 46.7% of patients without CBR decreased. Further analysis showed that the mean proportion of PD-L1 high CTCs at baseline and after treatment was 56.8±20.7%, 19.0±23.7%, p = 0.005. There was no significant difference in the mean proportion of PD-L1 high CTCs before and after treatment in the non-CBR group (28.0±26.2%, 30.3±31.5%, p = 0.846). Conclusions: We revealed that the abundance of PD-L1high CTCs at baseline might serve as a predictor to screen patients for PD-1/PD-L1 blockade therapies and measuring the dynamic changes of PD-L1high CTCscould indicate the therapeutic response at early time.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
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    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2019
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