A phase I study determining the safety and tolerability of combination therapy with pazopanib, a VEGFR/PDGFR/raf inhibitor, and GSK1120212, a MEK inhibitor, in advanced solid tumors enriched with patients with advanced differentiated thyroid cancer.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. TPS3117-TPS3117 ◽  
Author(s):  
Shabina Roohi Ahmed ◽  
Nilofer Saba Azad ◽  
Douglas Wilmot Ball ◽  
Michelle A. Rudek ◽  
Barry Nelkin ◽  
...  
Keyword(s):  
Thyroid Cancer ◽  
Phase I ◽  
Differentiated Thyroid Cancer ◽  
Kinase Inhibitor ◽  
Performance Status ◽  
Critical Role ◽  
Growth Factor Receptor ◽  
Primary Objective ◽  
Open Label ◽  
Expansion Cohort

TPS3117 Background: Mutations of the RAS/RAF/MEK/ERK signaling pathway, especially RAS, BRAF and IGF-I/II receptor genes play a critical role in the development of many different types of cancers, including breast, colorectal, melanoma, NSCLC, and thyroid. Differentiated thyroid cancer (DTC) is the most common endocrine malignancy, but there is currently no approved therapy for advanced radioiodine-resistant disease. In DTC xenograft models, vertical inhibition of this pathway, achieved by targeting the vascular endothelial growth factor receptor (VEGFR) and MEK, has shown greater clinical efficacy than with either agent alone. Pazopanib (P) is a small molecule tyrosine kinase inhibitor that selectively inhibits VEGFR1-3, PDGFR-α, PDGFR-b, c-kit, and FGFR 1-3. Phase II data in advanced DTC from Bible, et al, indicate a 49% response rate with a PFS of 11.7 months in a patients with PD within 6 months. GSK1120212 (G) is a potent, highly selective, allosteric inhibitor of MEK1/2. In a phase I/II study, Infante et al. reported an ORR of 81% in BRAF mutant melanoma patients when G was combined with a RAF inhibitor. Methods: A phase I, open label, dose escalation trial with P+G is currently accruing pts with advanced malignancies. The study is a standard 3+3 design with an expansion cohort of 25 pts with advanced DTC for correlative endpoints and PK studies. Pts will be treated with P at 400 mg QD, 600 mg QD and 800 mg QD, with G held constant at 1 mg QD; G will then be escalated to 1.5 mg QD and 2 mg QD. Eligibility includes advanced solid tumor, good end organ function and performance status, and PD within 6 months in the expansion cohort. The primary objective is to determine the safety and tolerability of the combination and determine the MTD. Secondary objectives include assessing preliminary efficacy as defined by RECIST criteria and PFS, and exploration of PK/PD endpoints. Serial tumor biopsies will be evaluated for changes in signaling through p-ERK. RAS and RAF mutation sites will be sequenced in order to correlate with PD endpoints and disease response. Currently, DL1 has accrued with no DLTs.

scholarly journals Cabozantinib As Salvage Therapy for Patients With Tyrosine Kinase Inhibitor–Refractory Differentiated Thyroid Cancer: Results of a Multicenter Phase II International Thyroid Oncology Group Trial

2017 ◽  
Vol 35 (29) ◽  
pp. 3315-3321 ◽  
Author(s):  
Maria E. Cabanillas ◽  
Jonas A. de Souza ◽  
Susan Geyer ◽  
Lori J. Wirth ◽  
Michael E. Menefee ◽  
...  
Keyword(s):  
Thyroid Cancer ◽  
Targeted Therapy ◽  
Phase Ii ◽  
Differentiated Thyroid Cancer ◽  
Kinase Inhibitor ◽  
Objective Response ◽  
Evaluation Criteria ◽  
Growth Factor Receptor ◽  
Progression Free Survival ◽  
Multikinase Inhibitor

Purpose Sorafenib and lenvatinib are oral multikinase inhibitors targeting vascular endothelial growth factor receptor (VEGFR) and approved for radioiodine (RAI)-refractory differentiated thyroid cancer (DTC). However, there are no approved second- or third-line therapies. MET is implicated in resistance to VEGFR inhibitors. Cabozantinib is an oral multikinase inhibitor targeting MET in addition to VEGFR and is approved for medullary thyroid cancer. In a phase I study of cabozantinib, five of eight patients with DTC previously treated with a VEGFR-targeted therapy had an objective response to cabozantinib. Patients and Methods Patients with RAI-refractory disease with Response Evaluation Criteria in Solid Tumor (RECIST) measurable disease and evidence of progression on prior VEGFR-targeted therapy were enrolled in this single-arm phase II study. The cabozantinib starting dose was 60 mg/day orally but could be escalated to 80 mg if the patient did not experience a response. Patients underwent tumor assessment according to RECIST v1.1 every 8 weeks. In this study, if at least five of 25 response-evaluable patients had an objective response, cabozantinib would be considered a promising agent in this patient population. Results Twenty-five patients were enrolled. The median age was 64 years, and 64% of patients were men. Twenty-one patients had received only one prior VEGFR-targeted therapy (sorafenib, pazopanib, or cediranib), and four patients had received two such therapies. The most common treatment-related adverse events were fatigue, weight loss, diarrhea, palmar-plantar erythrodysesthesia, and hypertension. One drug-related death was noted. Of the 25 patients, 10 (40%) had a partial response, 13 (52%) had stable disease, and two (8%) had nonevaluable disease. The median progression-free survival and overall survival were 12.7 months and 34.7 months, respectively. Conclusion Cabozantinib demonstrated clinically significant, durable objective response activity in patients with RAI-refractory DTC who experienced disease progression while taking prior VEGFR-targeted therapy.

Phase I/II trial of CCI 779 and bevacizumab in advanced renal cell carcinoma (RCC): Safety and activity in RTKI refractory RCC patients

2009 ◽  
Vol 27 (15_suppl) ◽  
pp. 5039-5039 ◽  
Author(s):  
J. R. Merchan ◽  
H. C. Pitot ◽  
R. Qin ◽  
G. Liu ◽  
T. R. Fitch ◽  
...  
Keyword(s):  
Phase I ◽  
Phase Ii ◽  
Performance Status ◽  
Stage Iv ◽  
Response Assessment ◽  
Response Rates ◽  
Median Number ◽  
Primary Objective ◽  
Phase 2 ◽  
Open Label

5039 Background: Combined mTOR and VEGF blockade is a potentially promising and rational strategy for the treatment of advanced RCC. We previously reported the phase I safety and efficacy results of CCI 779 (C) +bevacizumab (B) n RTKI naïve stage IV RCC patients (pts) (J Clin Oncol. 2007;25[18S Suppl]:5034). We now report the interim results of the phase 2 study of C+B in RTKI refractory RCC patients. Methods: Design: Open label, phase I/II study of C+B in advanced RCC pts. Patients with measurable stage IV RCC with a component of clear/conventional cell type, performance status 0–2 and good organ function were eligible. Up to two prior treatment regimens were allowed (at least one prior RTKI). Phase II dose was C = 25 mg IV weekly and B = 10 mg/kg every 2 weeks repeated in 4 week cycles. The primary objective of the phase II portion was to assess the proportion of patients who were progression-free 6 months after study entry. Secondary objectives were assessment of response rates and toxicity. Accrual goal = 40 pts. Results: Thirty-five pts have been enrolled into the phase 2 portion to date with 4 pts ineligible. Twenty-five pts are evaluable for response assessment and 29 pts are evaluable for toxicity. Baseline characteristics (N: 35): M/F: 28/7; Number of met. sites: 1/2/3+: 15/9/11; prior nephrectomy: 31; Number of prior therapies: 1 = 29; 2 = 2. Most common (>5%) Gr 3–4 AEs (N = 29) included fatigue (6), hypercholesterolemia (2), hypertriglyceridemia (2), anorexia (2), rash (2), and anemia (2). Responses were: PR/SD/PD = 4 (16%)/18 (72%)/3 (12%). Median number of cycles administered was 4. Six month progression free rates will mature by may 2009. Conclusions: C+B combination at the recommended phase 2 doses is feasible and well tolerated. Clinical benefit rates (PR/SD) in RTKI refractory RCC patients (88%) are encouraging. Data on 6 month progression-free rates are expected to mature in 4/09. Updated data on safety, response rates, and 6-month progression free rates will be presented on all evaluable patients. Correlative studies on available plasma, serum and tumor samples for angiogenic and molecular biomarkers are underway. Supported by N01-CM62205, R21 CA 119545–02, and Commonwealth Foundation. [Table: see text]

Safety and efficacy of everolimus in Asian patients with metastatic renal cell carcinoma (mRCC) who failed previous vascular endothelial growth factor receptor-tyrosine kinase inhibitor (VEGFr-TKI) therapy: A subanalysis of REACT.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e15064-e15064
Author(s):  
Sun Young Rha ◽  
Se-Hoon Lee ◽  
Yen-Chuan Ou ◽  
Jin-Hee Ahn ◽  
Yen-Hwa Chang ◽  
...  
Keyword(s):  
Total Population ◽  
Kinase Inhibitor ◽  
Growth Factor Receptor ◽  
Asian Population ◽  
Primary Objective ◽  
Open Label ◽  
Total Study Population ◽  
Expanded Access ◽  
Asian Patients ◽  
Grade 3

e15064 Background: Some targeted agents have shown variable safety profiles in Asian vs non-Asian patients with mRCC. A retrospective analysis of sunitinib in Korean patients with mRCC found increased incidence and severity of certain adverse events (AEs) compared with previous global trials (Hong et al. Cancer Res Treat. 2009;41:67-72). The open-label, expanded-access program REACT (RAD001 Expanded Access Clinical Trial in RCC; NCT00655252) provided everolimus, a mammalian target of rapamycin (mTOR) inhibitor, before its regulatory approval to 1367 patients with VEGFr-TKI refractory mRCC from 34 countries. Final results of REACT were recently published (Grünwald et al. Eur J Cancer. 2012;48:324-332). This analysis compared study end points in Asian patients with those in the total REACT population. Methods: The primary objective of REACT was to assess the safety of everolimus 10 mg/day, as determined by the overall occurrence of grade 3/4 AEs. Best overall tumor response was evaluated based on RECIST 1.0. Results: Baseline characteristics of Asian patients (n = 109; from South Korea, Taiwan, Thailand, and Singapore) were similar to those of the total study population. Median duration of everolimus exposure was longer in Asian patients than in the total population: 24.1 (range, 2.0-72.7) vs 14.0 (0.1-83.7) weeks. Overall incidence of grade 3/4 AEs was slightly higher in Asian patients than in the total population (70.6% vs 61.6%); common grade 3/4 AEs in Asian patients and the total population, respectively, included anemia (26.6% vs 13.4%), hyperglycemia (11.9% vs 5.5%), pneumonia (10.1% vs 4.2%), stomatitis (6.4% vs 5.4%), thrombocytopenia (3.7% vs 1.0%), and pneumonitis (3.7% vs 2.7%). More patients in the Asian population than in the total population had achieved disease control: partial response, 3.7% vs 1.7%; stable disease, 67.0% vs 51.6%. Conclusions: In this subanalysis of REACT, Asian patients treated with everolimus experienced a greater clinical benefit with a slightly higher incidence of AEs. These results are supportive of the use of everolimus in the Asian population.

Dovitinib as second-line therapy in patients with fibroblast growth factor receptor 2 (FGFR2)-mutated or non-mutated advanced and/or metastatic endometrial cancer (EC): A single-arm, multicenter, phase II study.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. TPS5616-TPS5616
Author(s):  
Gottfried E. Konecny ◽  
Neil Finkler ◽  
Agustin Garcia ◽  
Francesco Raspagliesi ◽  
Carolina Muriel Lopez ◽  
...  
Keyword(s):  
Growth Factor ◽  
Phase Ii ◽  
Kinase Inhibitor ◽  
Phase Ii Study ◽  
Performance Status ◽  
Growth Factor Receptor ◽  
Second Line ◽  
Open Label ◽  
Second Line Therapy ◽  
Line Therapy

TPS5616 Background: Despite the use of combination chemotherapy and introduction of novel targeted agents, the prognosis for advanced and/or metastatic EC is challenging. The occurrence of somatic activating FGFR2 mutations in EC suggests an opportunity for testing FGFR inhibitors. Dovitnib (DOV) is a potent receptor tyrosine kinase inhibitor of vascular endothelial growth factor receptor, platelet-derived growth factor receptor and FGFR. The objective of the study is to investigate the efficacy and safety of DOV as second-line therapy in patients (pts) with advanced and/or metastatic EC. Methods: This multicenter, non-randomized, open label, single-arm, phase II study (NCT01379534) will enroll adult female pts (N~80) with either FGFR2 mutated (group 1) or non-mutated (group 2) histologically confirmed advanced and/or metastatic EC, who have documented radiological evidence of progressive disease (RECISTv1.1) after 1 prior line of chemotherapy, excluding adjuvant therapy. Eligible pts also need to have ≥1 measurable lesion (RECISTv1.1) and ECOG performance status ≤ 2. Pts will receive oral DOV of 500 mg/day, on a 5-days-on / 2-days-off dosing schedule until disease progression, unacceptable toxicity, death, or discontinuation due to any other reason. Primary endpoint is 18-week progression-free survival (PFS) rate (local review; RECIST v1.1) and secondary endpoints include overall response rate, disease control rate, duration of response, PFS, overall survival, safety, tolerability, pharmacokinetics, and pharmacodynamic effect of DOV on soluble plasma biomarker expression level. A 2-stage design with Bayesian interim monitoring (interim for futility analyses) will be used in each group. For stage 1, 20 pts will be enrolled into each group. If ≥ 8 of the first 20 pts with measurable disease at baseline in either group are progression-free after 18 weeks of treatment, 20 additional pts will be enrolled into that group in stage 2. Preliminary results for each group will be evaluated in the interim analysis. As of 20 January 2013, 43 pts have been enrolled (12 with and 31 without FGFR2 mutations). Clinical trial information: NCT01379534.

scholarly journals Efficacy and safety of TAS-115, a novel oral multi-kinase inhibitor, in osteosarcoma: an expansion cohort of a phase I study

2021 ◽  
Author(s):  
Akira Kawai ◽  
Norifumi Naka ◽  
Akihiko Shimomura ◽  
Shunji Takahashi ◽  
Shigehisa Kitano ◽  
...  
Keyword(s):  
Phase I ◽  
Standard Therapy ◽  
Phase I Study ◽  
Kinase Inhibitor ◽  
Bone Tumour ◽  
Progression Free Survival ◽  
Open Label ◽  
Novel Therapy ◽  
Expansion Cohort

SummaryBackground osteosarcoma is a rare, primary malignant bone tumour with limited available treatments for advanced or recurrent disease, resulting in a poor prognosis for patients. TAS-115 is a novel tyrosine kinase inhibitor under investigation in a phase I study in patients with solid tumours. We report data of osteosarcoma patients in the expansion cohort of this ongoing study. Patients and methods an analysis of this multicentre, open-label study was performed 6 months after the final patient was enrolled, and included patients aged ≥15 years, with unresectable or recurrent osteosarcoma, and who had refractory to standard therapy or for whom no standard therapy was available. TAS-115 650 mg/day was orally administered in a 5 days on/2 days off schedule. Results a total of 20 patients with osteosarcoma were enrolled. The most common adverse drug reactions (ADRs) were neutrophil count decreased (75%), aspartate aminotransferase increased (50%), and platelet count decreased (50%); 85% of patients had grade ≥ 3 ADRs. Long-term disease control (>1 year) with TAS-115 was achieved in three patients. The best overall response was stable disease (50%); no patient achieved a complete or partial response. Median progression-free survival was 3 months; 4-month and 12-month progression-free rates were 42% and 31%, respectively. Conclusion the safety and tolerability of TAS-115 and long-term disease stability for patients with unresectable or recurrent osteosarcoma were confirmed in this study, suggesting that TAS-115 is a promising novel therapy for advanced osteosarcoma patients. Trial registration number: JapicCTI-132333 (registered on November 8, 2013).

scholarly journals Efficacy and safety of TAS-115, a novel oral multi-kinase inhibitor, in osteosarcoma: an expansion cohort of a Phase I study

2021 ◽  
Author(s):  
Akira Kawai ◽  
Norifumi Naka ◽  
Akihiko Shimomura ◽  
Shunji Takahashi ◽  
Shigehisa Kitano ◽  
...  
Keyword(s):  
Phase I ◽  
Standard Therapy ◽  
Phase I Study ◽  
Kinase Inhibitor ◽  
Bone Tumour ◽  
Progression Free Survival ◽  
Open Label ◽  
Novel Therapy ◽  
Expansion Cohort

Abstract BackgroundOsteosarcoma is a rare, primary malignant bone tumour with limited available treatments for advanced or recurrent disease, resulting in a poor prognosis for patients. TAS-115 is a novel tyrosine kinase inhibitor under investigation in a Phase I study in patients with solid tumours. We report data of osteosarcoma patients in the expansion cohort of this ongoing study.Patients and methodsAn analysis of this multicentre, open-label study was performed 6 months after the final patient was enrolled, and included patients aged ≥ 15 years, with unresectable or recurrent osteosarcoma, and who had refractory to standard therapy or for whom no standard therapy was available. TAS-115 650 mg/day was orally administered in a 5 days on/2 days off schedule.ResultsA total of 20 patients with osteosarcoma were enrolled. The most common adverse drug reactions (ADRs) were neutrophil count decreased (75%), aspartate aminotransferase increased (50%), and platelet count decreased (50%); 85% of patients had grade ≥ 3 ADRs. Long-term disease control (> 1 year) with TAS-115 was achieved in three patients. The best overall response was stable disease (50%); no patient achieved a complete or partial response. Median progression-free survival was 3 months; 4-month and 12-month progression-free rates were 42% and 31%, respectively.ConclusionThe safety and tolerability of TAS-115 and long-term disease stability for patients with unresectable or recurrent osteosarcoma were confirmed in this study, suggesting that TAS-115 is a promising novel therapy for advanced osteosarcoma patients.Trial registration numberJapicCTI-132333 (registered on November 8, 2013)

scholarly journals Effect of ceritinib on the pharmacokinetics of coadministered CYP3A and 2C9 substrates: a phase I, multicenter, drug–drug interaction study in patients with ALK + advanced tumors

2021 ◽  
Author(s):  
Felipe K. Hurtado ◽  
Filippo de Braud ◽  
Javier De Castro Carpeño ◽  
Maria Jose de Miguel Luken ◽  
Ding Wang ◽  
...  
Keyword(s):  
Drug Interaction ◽  
Phase I ◽  
Kinase Inhibitor ◽  
Geometric Mean ◽  
Concomitant Administration ◽  
Primary Objective ◽  
Adult Patients ◽  
Open Label ◽  
Drug Drug Interaction ◽  
Advanced Tumors

Abstract Purpose Ceritinib is an ALK receptor tyrosine kinase inhibitor approved as first- and second-line treatment in adult patients with ALK + metastatic non-small cell lung cancer (NSCLC). The study investigated the drug–drug interaction (DDI) potential of ceritinib when coadministered with midazolam and warfarin as probe substrates for CYP3A and CYP2C9 activity, respectively. Methods This was a phase I, multicenter, open-label, single sequence, crossover DDI study in 33 adult patients with ALK + NSCLC or other advanced tumors. A single dose of a cocktail consisting of midazolam and warfarin was administered with and without concomitant administration of ceritinib. The primary objective was to evaluate the pharmacokinetics of midazolam and warfarin. Secondary objectives included pharmacokinetics, safety, tolerability, overall response rate (ORR), and duration of response (DOR) of ceritinib 750 mg once daily. Results Ceritinib inhibited CYP3A-mediated metabolism of midazolam, resulting in a markedly increased AUC (geometric mean ratio [90% confidence interval]) by 5.4-fold (4.6, 6.3). Ceritinib also led to an increase in the AUC of S-warfarin by 54% (36%, 75%). The pharmacokinetics and safety profile of ceritinib in this study are consistent with previous reports and no new safety signals were reported. Among the 19 patients with NSCLC, efficacy (ORR: 42.1% and DCR: 63.2%) was similar to that reported previously in studies of pretreated patients with ALK + NSCLC. Conclusion Ceritinib is a strong CYP3A inhibitor and a weak CYP2C9 inhibitor. These findings should be reflected as actionable clinical recommendations in the prescribing information for ceritinib with regards to concomitant medications whose pharmacokinetics may be altered by ceritinib.

International, expanded access program of everolimus in patients with metastatic renal cell carcinoma (mRCC) who progressed after previous vascular endothelial growth factor receptor-tyrosine kinase inhibitor therapy (VEGFr-TKI): Subanalysis from emerging growth market (EGM) countries.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e15047-e15047
Author(s):  
Se-Hoon Lee ◽  
Suleyman Buyukberber ◽  
Yen-Chuan Ou ◽  
Jeremy David Shapiro ◽  
Ashok Panneerselvam ◽  
...  
Keyword(s):  
Kinase Inhibitor ◽  
Mammalian Target Of Rapamycin ◽  
Growth Factor Receptor ◽  
Progression Free Survival ◽  
Primary Objective ◽  
Open Label ◽  
Safety Issues ◽  
Expanded Access ◽  
Expanded Access Program ◽  
Access Program

e15047 Background: Everolimus is a mammalian target of rapamycin (mTOR) inhibitor shown to benefit patients with mRCC after failure of initial VEGFr-TKI therapy. In the phase 3 RECORD-1 trial, median progression-free survival was 4.9 months with everolimus and 1.9 months with placebo (hazard ratio, 0.33; P < .001). REACT (RAD001 Expanded Access Clinical Trial in RCC; NCT00655252) was an open-label, expanded access program that provided everolimus before commercial availability to 1367 patients with VEGFr-TKI refractory mRCC in 34 countries. Final results of REACT were recently published (Eur J Cancer. 2012;48:324-332). Methods: The primary objective of REACT was to evaluate the long-term safety of everolimus 10 mg/day as determined by the overall incidence of grades 3 and 4 adverse events (AEs). Best overall tumor response was assessed according to RECIST 1.0. This subanalysis was conducted to assess primary and secondary end points in a subgroup of patients from 11 EGM countries: Turkey, Australia, Russia, Israel, Lebanon, Jordan, Saudi Arabia, South Korea, Singapore, Taiwan, and Thailand. Results: Baseline characteristics of the EGM population (n = 243) were similar to the overall REACT population: median age, 60.0 years; clear cell histology, 95.1%; and progression on/intolerance to previous VEGFr-TKI therapy, 89.7%/16.9%. Median duration (range) of everolimus exposure was 20.4 (0.3-83.7) weeks. Clinical benefit was observed in 60.1%/53.3% of EGM patients/all patients (stable disease, 55.6%/51.6%; partial response, 4.5%/1.7%). Common grade ≥3 AEs in EGM patients/all patients included anemia (19.8%/13.4%), pneumonia (7.4%/4.2%), hyperglycemia (7.0%/5.5%), stomatitis (5.8%/5.4%), and pneumonitis (2.9%/2.7%); 13.2%/16.6% of EGM patients/all patients discontinued because of AEs. Conclusions: In patients from EGM countries, safety findings and tumor responses were consistent with the overall REACT population and with RECORD-1. Everolimus was well tolerated, with no new safety issues identified.

scholarly journals Phase I first-in-human study of HLX07, a novel and improved recombinant anti-EGFR humanized monoclonal antibody, in patients with advanced solid cancers

2021 ◽  
Author(s):  
Ming-Mo Hou ◽  
Ching-Liang Ho ◽  
Hsuan-Yu Lin ◽  
Yunting Zhu ◽  
Xiaodi Zhang
Keyword(s):  
Phase I ◽  
Standard Therapy ◽  
Human Study ◽  
Growth Factor Receptor ◽  
Systemic Exposure ◽  
Open Label ◽  
Dose Escalation Study ◽  
Clinical Trial Registration ◽  
Humanized Monoclonal Antibody ◽  
Open Label Phase

SummaryPurpose This study aimed to evaluate the safety and pharmacokinetic (PK) profiles of HLX07, a novel, recombinant, humanized anti-epidermal growth factor receptor (EGFR) antibody, in patients with advanced solid cancers who had failed standard therapy or for whom no standard therapy was available. Methods In this prospective, open-label, Phase I dose escalation study, patients aged ≥18 years (≥20 years for patients in Taiwan) with histologically-confirmed metastatic or recurrent epithelial carcinoma that had no K-RAS or B-RAF mutations were enrolled in a ‘3 + 3’ escalation design. HLX07 was administered weekly by 2-h intravenous infusion at doses ranging from 50 to 800 mg. The primary endpoint was summary listing of participants reporting treatment-emergent adverse events (TEAEs). Secondary endpoints included PK analysis, serum anti-HLX07 antibody assessments and efficacy. Results In total, 19 patients were enrolled between 1 October 2016 and 16 July 2019 to receive HLX07 at doses of 50 (n = 3), 100 (n = 3), 200 (n = 3), 400 (n = 3), 600 (n = 3) and 800 (n = 4) mg per week. All patients experienced at least one TEAE, most commonly fatigue (68.4%), nausea (47.4%), paronychia (31.6%) and vomiting (31.6%). Serious TEAEs were reported in 11 patients but only one serious TEAE (dyspnea in 600 mg cohort) was regarded as possibly related to study treatment. No dose limiting toxicity (DLT) was reported. Systemic exposure to HLX07 increased proportionally with dose. Anti-HLX07 antibodies were not detected in any patients. Conclusion HLX07 was well tolerated (at dose levels up to 800 mg/week) and promising in patients with advanced solid cancers.Clinical Trial Registration: The study was registered at ClinicalTrials.gov: NCT02648490 (Jan 7, 2016).

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