Clinical trial NCT03500380: A Study of RC48-ADC Administered Intravenously to Patients With HER2-Positive Metastatic Breast Cancer With or Without Liver Metastases
Official title: A Randomized, Controlled, Multi-center Phase II Clinical Study to Evaluate the Efficacy and Safety of Recombinant Humanized Anti-HER2 Monoclonal Antibody-MMAE Conjugate for Injection in the Treatment of HER2-positive Locally Advanced or Metastatic Breast Cancer and Phase III Clinical Study to Evaluate the Efficacy and Safety of Recombinant Humanized Anti-HER2 Monoclonal Antibody-MMAE Conjugate for Injection in the Treatment of HER2-positive Advanced Breast With Liver Metastases
Study type: INTERVENTIONAL
Overall status: ACTIVE_NOT_RECRUITING
Phase: PHASE2
PHASE3
Conditions: Breast Neoplasms
Breast Diseases
Capecitabine
HER2-positive Breast Cancer
HER2 Positive Breast Carcinoma
HER2-positive Advanced Breast With Liver Metastases
Lead sponsor: RemeGen Co., Ltd.
Sponsor class: INDUSTRY
First posted: 2018-04-18
Enrollment: 301
Sex: ALL
Minimum age (years): 18
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: TREATMENT

Brief summary: This is a randomized, open, parallel-controlled, multicenter, phase II/III, seamless design clinical trial to compare the efficacy and safety of RC48-ADC with capecitabine + lapatinib in locally advanced or metastatic human epidermal growth factor receptor 2 (HER2) positive breast cancer and HER2-positive advanced breast cancer with liver metastasis.


Eligibility criteria: Inclusion criteria for the first phase randomized control period:

* Voluntarily agree to participate in the study and sign the informed consent form.
* Subjects aged 18 - 70 years (inclusive), and the subject who have not reached the age of 71 years old will be considered to be ≤ 70 years of age.
* Expected survival ≥ 12 weeks.
* ECOG PS score 0 or 1.
* Female subjects should be surgically sterilized or in post-menopausal status, or agree to use at least one medically accepted contraceptive methods (such as intrauterine device, contraceptive drug or condom) during study treatment period and for up to 6 months after the study treatment is completed, and the blood pregnancy test must be negative within 7 days prior to study enrollment, and they must not be lactating. For male subjects: all the subjects should be surgically sterilized or agree to use one of the medically approved contraceptive methods during the study treatment period and for an additional of 6 months after the end of the study treatment period.
* Able to understand study requirements, willing and able to comply with study protocol and follow-up procedures.

With Adequate Organ Function

* Bone marrow function:

Hemoglobin ≥ 9 g/dL; Absolute neutrophil count ≥ 1.5×109/L; Platelets ≥ 100 × 109/L;

* Liver function (based on the normal values specified by study site):

Serum total bilirubin ≤ 1.5 × the upper limit of normal (ULN); Alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) ≤ 2.5 × ULN in the absence of liver metastases, while ALT, AST and ALP ≤ 5 × ULN in the presence of liver metastases;

* Renal function (based on the normal values specified by study site):

Serum creatinine ≤ 1.5 × ULN, or creatinine clearance (CrCl) ≥ 60 mL/min as calculated by Cockcroft-Gault formula, or 24-hour urine Crcl ≥ 60 mL/min;

* Cardiac function:

New York Heart Association (NYHA) classification \< Grade III; Left ventricular ejection fraction ≥ 50%; Tumor Related Criteria

* Histologically and/or cytologically confirmed invasive locally advanced or metastatic breast cancer that is incurable and unresectable;
* Positive HER2 expression (positive defined as: IHC 3+ or FISH+); previous test results of HER2 expression provided by the subjects (have to be confirmed by the investigator) and those obtained from the study site or the central laboratory were both acceptable; subject are able to provide samples from primary or metastatic tumor sites for HER2 test (either paraffin blocks, paraffin-embedded sections, or sections prepared using freshly excised tissues);
* With prior taxane therapy (monotherapy or in combination with other drugs, treatment duration should be ≥ 2 cycles);
* With prior adjuvant therapy, have received treatment with trastuzumab or its biosimilar for patients with locally advanced cancer or metastasis during relapse and metastasis (monotherapy or in combination with other drugs, such as for ≥ 3 months in the adjuvant therapy phase, and ≥ 6 weeks in the post-relapse and metastatic phase);
* With evidence of tumor progression during or after the most recent treatment as confirmed by the investigator or with documented history;
* No more than 2 lines of chemotherapy received after relapse/metastasis. The number of chemotherapy lines is restricted to chemotherapeutic drugs, and each chemotherapy regimen is counted as a number of chemotherapy line, excluding targeted drugs and/or endocrine drugs; the same maintenance treatment as the previous chemotherapy regimen will not be counted.
* With at least one measurable lesion per RECIST v1.1.

Exclusion Criteria for Randomized Controlled Period in Stage I:

* Use of investigational drugs within 4 weeks prior to study treatment;
* Have received major surgeries within 4 weeks prior to study treatment and have not recovered yet;
* Have received a live vaccine inoculation within 4 weeks prior to the start of study drug administration or was scheduled to receive any vaccine during the study;
* Have experienced arterial/venous thromboembolic events, such as cerebrovascular accident (including transient ischemic attack), deep vein thrombosis and pulmonary embolism within 1 year prior to the initiation of study treatment;
* Suffering uncontrolled systemic diseases, including diabetes, hypertension, pulmonary fibrosis, acute lung disease, interstitial lung disease, cirrhosis, etc.;
* Currently suffering from active infections requiring systemic treatment;
* With history of active tuberculosis;
* With positive HIV test result;
* Patients with active hepatitis B or C (HBsAg positive and HBV DNA positive; HCVAb positive);
* Presence of effusion in the third space (including massive hydrothorax or ascites) that cannot be controlled by drainage or other methods;
* With known hypersensitivity or delayed-type hypersensitivity to certain components of RC48-ADC, capecitabine, lapatinib or similar drugs;
* With pre-existing gastrointestinal disorders that may affect absorption, such as ileus, ulcerative colitis, chronic diarrhea, inability to swallow, and other conditions that may affect drug administration and absorption;
* With known psychiatric disorders or drug abuse disorders that might have an impact on compliance with protocol requirements;
* Have any other diseases, metabolic disorders, abnormal physical examination findings or abnormal laboratory test results, which, judged by the investigator, are reasonably to suspect a disease or condition as a contraindication of the study drug, or may interfere the interpretation of the study results in the future, or that put the patient at a high risk;
* Women who are pregnant or during lactation period or women/men with childbearing plans;
* Subjects who are estimated to have poor compliance with the clinical study or the investigator determines that there are other factors not appropriate to participate in the study;
* Presence of brain metastases and/or carcinomatous meningitis.
* Had any other malignancy within 5 years prior to signing of the informed consent (except for non-melanoma skin cancer, cervix carcinoma in situ or other tumor that have been effectively treated and considered to be cured);
* Have received prior chemotherapy, radiotherapy, immunotherapy within 4 weeks prior to the first dose of the study drug;
* Have received hormonal therapy for breast cancer within 2 weeks prior to the start of study treatment;
* Patients who received palliative radiotherapy for bone metastases within 2 weeks before the start of study treatment;
* Have received anti-tumor traditional Chinese medicine within 2 weeks prior to the start of study treatment;
* Have received capecitabine within 6 months prior to the start of study treatment, or have failed to respond to prior treatment with capecitabine (including progression while on capecitabine treatment or maintenance of clinical efficacy for a period of less than 6 months after treatment), or with intolerance to capecitabine. Patients who have received capecitabine as adjuvant therapy and have discontinued this therapy for ≥ 6 months are eligible;
* The toxicity of prior anti-tumor therapy had not recovered to CTCAE \[Version 4.03\] Grade 0-1, with the following exceptions: a). alopecia; b). pigmentation; c). long-term toxicity caused by radiotherapy, which are considered as irreversible by the investigator;
* With prior systemic therapy with or participation in clinical studies with HER2 tyrosine kinase inhibitors (TKIs);
* With prior treatment with T-DM1 or had participated in clinical studies with same class of drugs.
* With known hypersensitivity to 5-fluorouracil or known dihydropyrimidine dehydrogenase deficiency.

Inclusion Criteria for Stage 1 Cross-over Period：

* Had previously participated in the study of randomized controlled period and received lapatinib plus capecitabine, and received no anti-tumor treatment after disease progression (RECIST v1.1 criteria);
* The general situation part refers to the selection criteria of the first stage randomized control period.

Exclusion Criteria for Cross-over Period in Stage I：

* Have received major surgeries within 4 weeks prior to study treatment and have not recovered yet;
* Have received a live vaccine inoculation within 4 weeks prior to the start of study drug administration or was scheduled to receive any vaccine during the study (except the COVID-19 vaccine);
* Have experienced arterial/venous thromboembolic events, such as cerebrovascular accident (including transient ischemic attack), deep vein thrombosis and pulmonary embolism within 1 year prior to the initiation of study treatment;
* Suffering uncontrolled systemic diseases, including diabetes, hypertension, pulmonary fibrosis, acute lung disease, interstitial lung disease, cirrhosis, etc.;
* Currently suffering from active infections requiring systemic treatment;
* With positive HIV test result;
* Patients with active hepatitis B or C (HBsAg positive and HBV DNA positive; HCVAb positive);
* Presence of effusiona in the third space (including massive hydrothorax or ascites) that cannot be controlled by drainage or other means;
* With known hypersensitivity or delayed-type hypersensitivity to certain components of RC48-ADC or similar drugs;
* With known psychiatric disorders or drug abuse disorders that might have an impact on compliance with protocol requirements;
* Have any other diseases, metabolic disorders, abnormal physical examination findings or abnormal laboratory test results, which, judged by the investigator, are reasonably to suspect a disease or condition as a contraindication of the study drug, or may interfere the interpretation of the study results in the future, or that put the patient at a high risk;
* Women who are pregnant or in lactation period or women/men with childbearing plans;
* Subjects who are estimated to have poor compliance with the protocol of this cross-over period or the investigator determines that there are other factors not appropriate to participate in the study;
* Presence of brain metastases and/or carcinomatous meningitis. Have received prior treatment for brain metastases may be considered for participating in this study, provided that the diseases were stable, had no disease progression as confirmed by imaging examinations within 4 weeks prior to the first dose of the investigational product (IP), and that all neurological symptoms have recovered to baseline level without any evidence of newly emerging or spread brain metastases; moreover, treatment with radiation, surgery or steroids was discontinued at least 14 days prior to the first dose of study drug. This exception did not include cancerous meningitis, which should be excluded regardless of the stability of its clinical status;
* Patients who received palliative radiotherapy for bone metastases within 2 weeks before the start of study treatment;
* Received treatment with lapatinib and/or capecitabine within 2 weeks prior to the first dose of the study drug;
* The toxicity of prior anti-tumor therapy had not recovered to CTCAE \[Version 4.03\] Grade 0-1, with the following exceptions: a). alopecia; b). pigmentation; c). long-term toxicity caused by radiotherapy, which are considered as irreversible by the investigator;

Inclusion Criteria for Randomized Controlled Period in Stage II：

* The general situation part refers to the selection criteria of the first stage randomized control period.

Exclusion Criteria for Randomized Controlled Period in Stage II：

* The toxicity of prior anti-tumor therapy had not recovered to CTCAE \[Version 5.0\] Grade 0-1, with the following exceptions: a). alopecia; b). pigmentation; c). long-term toxicity caused by radiotherapy, which are considered as irreversible by the investigator;
* The remaining parts refer to the exclusion criteria of the first stage randomized control period.

Inclusion Criteria for Cross-over Period in Stage II：

* Had previously participated in the study of randomized controlled period and received lapatinib plus capecitabine, and received no anti-tumor treatment after disease progression (RECIST v1.1 criteria);
* Expected survival ≥ 12 weeks;
* ECOG PS score 0 or 1;
* Female subjects should be surgically sterilized or in post-menopausal status, or agree to use at least one medically accepted contraceptive methods (such as intrauterine device, contraceptive drug or condom) during study treatment period and for up to 6 months after the study treatment is completed, and the blood pregnancy test must be negative within 7 days prior to study enrollment, and they must not be lactating. For male subjects: all the subjects should be surgically sterilized or agree to use one of the medically approved contraceptive methods during the study treatment period and for an additional of 6 months after the end of the study treatment period.
* Able to understand study requirements, willing and able to comply with study protocol and follow-up procedures.

With Adequate Organ Function

* Bone marrow function:

Hemoglobin ≥ 9 g/dL; Absolute neutrophil count ≥ 1.5×109/L; Platelets ≥ 100 × 109/L;

* Liver function (based on the normal values specified by study site):

Serum total bilirubin ≤ 1.5 × the upper limit of normal (ULN); Alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) ≤ 2.5 × ULN in the absence of liver metastases, while ALT, AST and ALP ≤ 5 × ULN in the presence of liver metastases;

* Renal function (based on the normal values specified by study site):

Serum creatinine ≤ 1.5 × ULN, or creatinine clearance (CrCl) ≥ 60 mL/min as calculated by Cockcroft-Gault formula, or 24-hour urine Crcl ≥ 60 mL/min;

* Cardiac function:

New York Heart Association (NYHA) classification \< Grade III; Left ventricular ejection fraction ≥ 50%;

Exclusion Criteria for Cross-over Period in Stage II：

* The toxicity of prior anti-tumor therapy had not recovered to CTCAE \[Version 5.0\] Grade 0-1, with the following exceptions: a. alopecia; b. pigmentation; c. long-term toxicity caused by radiotherapy, which are considered as irreversible by the investigator;
* The remaining parts refer to the exclusion criteria of the first phase of the crossover period.

Primary outcomes:
measure: Progression-free Survival (PFS) as Assessed by an IRC
timeFrame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 24 months
Secondary outcomes:
measure: Progression-free Survival (PFS) as Assessed by Investigator
timeFrame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 24 months
measure: Objective Response Rate （ORR）
timeFrame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 24 months
measure: Duration of Objective Response (DOR)
timeFrame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 24 months
measure: Clinical Benefit Rate （CBR）
timeFrame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 24 months
measure: Time to Treatment Failure
timeFrame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 24 months
measure: Overall Survival
timeFrame: From date of randomization until the date of death from any cause, assessed up to 48 months
Other outcomes:
Locations:
city: Beijing
country: China
facility: Cancer Hospital Chinese Academy of Medical Sciences
state: Beijing
city: Shenyang
country: China
facility: Liaoning Cancer Hospital & Institute
state: Liaoning
city: Shenyang
country: China
facility: The First Hospital of China Medical University
state: Liaoning
city: Anyang
country: China
facility: An Yang Cancer Hospital
city: Beijing
country: China
facility: Beijing Luhe Hospital
city: Beijing
country: China
facility: Peking University People's Hospital
city: Bengbu
country: China
facility: The First Affiliated Hospital of Bengbu Medical College
city: Binzhou
country: China
facility: Bin Zhou No.1 People's Hospital
city: Changchun
country: China
facility: Jilin Cancer Hospital
city: Changchun
country: China
facility: The First Hospital Jilin University
city: Changchun
country: China
facility: The First Hospital of Jilin University
city: Changsha
country: China
facility: Hunan Cancer Hospital
city: Changsha
country: China
facility: The Second Xiyang Hospital of Central South University
city: Changsha
country: China
facility: Xiangya Hospital Central South University
city: Changzhi
country: China
facility: Heping Hospital Affiliated to Changzhi Medical College
city: Chengde
country: China
facility: Affiliated Hospital of Chengde Medical University
city: Chengdu
country: China
facility: West China Hospital,Sichuan University
city: Chongqing
country: China
facility: Chongqing University Three gorges Hospital
city: Chongqing
country: China
facility: The Southwest Hospital of AMU
city: Dalian
country: China
facility: The Second Hospital of Dalian Medical University
city: Fuzhou
country: China
facility: Fujian Cancer Hospital
city: Guangzhou
country: China
facility: Guangdong Provincial People's Hospital
city: Guangzhou
country: China
facility: Sun Yat-Sen Memorial Hospital
city: Guangzhou
country: China
facility: The Affiliated Tumor Hospital of Guangzhou Medical University
city: Guiyang
country: China
facility: Guizhou Cancer Hospital
city: Ha'erbin
country: China
facility: Harbin Medical University Cancer Hospital
city: Hangzhou
country: China
facility: The First Affiliated Hospital of Medical School of Zhejiang University
city: Hangzhou
country: China
facility: The Second Affiliated Hospital of Zhejiang University School of Medicine
city: Hangzhou
country: China
facility: Zhejiang Cancer Hospital
city: Hefei
country: China
facility: Anhui Cancer Hospital
city: Hefei
country: China
facility: Anhui Province Hospital
city: Hefei
country: China
facility: The First Affiliated Hospital of Anhui Medical University
city: Jinan
country: China
facility: Qilu Hospital of Shandong University
city: Jining
country: China
facility: The First People's Hospital of Jining
city: Kunming
country: China
facility: Yunnan Cancer Hospital
city: Linyi
country: China
facility: Linyi Cancer Hospital
city: Luoyang
country: China
facility: The First Affiliated Hospital of Henan University of Science & Technology
city: Nanjing
country: China
facility: Jiangsu Cancer Hospital
city: Nanning
country: China
facility: The Affiliated Tumor Hospital of Guangxi Medical University
city: Neijiang
country: China
facility: The Second People's Hospital of Neijiang
city: Qingdao
country: China
facility: Hospital of Qingdao University
city: Shanghai
country: China
facility: Fudan University Shanghai Cancer Center
city: Shanghai
country: China
facility: Shanghai Changhai Hospital
city: Shanghai
country: China
facility: Shanghai Ruijin Hospital
city: Shantou
country: China
facility: Cancer Hospital of Shantou University Medical College
city: Shaoguan
country: China
facility: Yue Bei People's Hospital
city: Shijiazhuang
country: China
facility: The Fourth Hospital of Hebei Medical University
city: Tai'an
country: China
facility: Tai'an City Central Hospital
city: Taiyuan
country: China
facility: Shanxi Bethune Hospital
city: Taiyuan
country: China
facility: Shanxi Cancer Hospital
city: Taizhou
country: China
facility: Taizhou Enze Medical Center
city: Tianjin
country: China
facility: Tianjin Cancer Hospitial
city: Weihai
country: China
facility: Weihai Municipal Hospital
city: Wuhan
country: China
facility: Hubei Cancer Hospital
city: Wuhan
country: China
facility: Tongji Medical College of HUST
city: Wuhan
country: China
facility: Wuhan Union Hospital
city: Xi'an
country: China
facility: The First Affiliated Hospital of the Fourth Military University of P.L.A.
city: Xi'an
country: China
facility: The First Affiliated Hospital of Xi'an Jiaotong University
city: Xingtai
country: China
facility: Xing Tai People's Hospital
city: Xinxiang
country: China
facility: The First Affiliated Hospital of Xinxiang Medical University
city: Xuzhou
country: China
facility: The Affiliated Hospital of Xuzhou Medical University
city: Xuzhou
country: China
facility: Xuzhou Central Hospital
city: Yanbian
country: China
facility: Yanbian University Hospital
city: Yantai
country: China
facility: Yantai Yuhuangding Hospital
city: Yuncheng
country: China
facility: Yuncheng Central Hospital
city: Zhengzhou
country: China
facility: Henan Cancer Hospital
city: Zhengzhou
country: China
facility: The First Affiliated Hospital of Zhengzhou University
Study officials:
References: