Phase I Study of Pyrotinib in Patients With HER2-positive Solid Tumors

Conditions:Breast Cancer, Lung Cancer, Cancer, Cancer, Cancer
Therapuetic Areas:Oncology
Age Range:18 - Any
Start Date:June 2015
End Date:March 2021
Contact:Junsheng Wang, MD

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A Two-part Phase I, Open Label, Dose Escalation Study to Evaluate the Safety, Tolerability and Pharmacokinetics of Pyrotinib in Patients With HER2-positive Solid Tumors Whose Disease Progressed on Prior HER2 Targeted Therapy

Part 1: to assess the safety and tolerability of pyrotinib and to define the maximum
tolerated dose (MTD) of pyrotinib in patients with Human Epidermal Growth Factor Receptor 2
(HER2)-positive advanced solid tumors (metastatic breast cancer, gastric cancer, or other
solid tumors that have no targeted agent as standard of care).

Part 2: to estimate the overall response rate (ORR) for patients with HER2-positive
metastatic breast cancer (mBC) and HER2 mutant non-small cell lung cancer (NSCLC) treated at
the RP2D (or MTD).

This is an open-label, dose escalation study of repeated doses of pyrotinib in patients with
HER2-positive advanced solid tumors, including breast cancer, non small cell lung cancer.

Part 1 of the trial is dose escalation and is designed to enroll 3 to 6 patients in each dose
group. Adverse events (AEs) will be assessed and monitored throughout the study.
Dose-limiting toxicities (DLT) will be assessed from the first dose of study drug through day
28 in the first cycle of treatment.

Part 2 of the trial will consist of two independent arms: arm A for HER2 positive mBC and arm
B for NSCLC with documented HER2 mutation will be investigated to further evaluate safety and
the preliminary effectiveness and clinical benefits of pyrotinib as a single agent.

The study is open to all males and females who meet the following inclusion criteria at
screening and baseline to participate in the study.

To be included to participate in this study each patient must:

- be ≥ 18 years of age;

- have an Eastern Cooperative Oncology Group performance status of 0-1 (not declining
within past 2 weeks, see Appendix 1);

- have confirmed HER2 gene amplified tumor fluorescence in-situ hybridization (FISH,
HER2/cep17 ratio > 2) or HER2 overexpression (IHC 3+) or documented HER2 gene
mutation. Documentation of HER2 status using FDA approved test(s) for HER2 testing
specific for HER2 breast and gastric cancer is required prior to screening;

- for part 1:

1. Patients with HER2 positive (defined as documented overexpression or
amplification or mutation) metastatic breast cancer who have experienced disease
progression following at least 2 prior anti-HER2 therapies for metastatic disease
that contain trastuzumab with or without pertuzumab, prior T-DM1, or lapatinib
therapy is required;

2. Patients with HER2 positive metastatic gastric cancer who have disease
progression on prior trastuzumab therapy;

3. other HER2-positive solid tumors (defined as documented overexpression or
amplification or mutation) that have no approved targeted agent as standard of

- for part 2:

1. Patients with HER2 positive metastatic breast cancer who have experienced disease
progression after at least 2 prior anti-HER2 therapies for metastatic disease
that contain trastuzumab with or without pertuzumab, prior T-DM1, or lapatinib
therapy is required;

2. Patients with documented HER2 mutated NSCLC whose disease progressed on prior

3. Patients in Part 2 extension must have at least one measurable lesion as defined
by modified Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 criteria;

- Left ventricular ejection fraction within institutional limits of normal (by multi
gated acquisition scan or echocardiography;

- have the required screening laboratory values including the following parameters:

1. Absolute neutrophil count ≥ 1.5×109/L (1,500/mm3);

2. Platelets ≥ 75×109/L (75,000/mm3);

3. Hemoglobin ≥ 9.0 g/dL (90 g/L);

4. Total bilirubin ≤ 1.5× upper limit of normal (ULN);

5. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 2.5×ULN;
for patients with liver metastases, ALT and AST ≤ 5×ULN;

6. Serum creatinine ≤ 1.5×ULN;

- have a life expectancy of > 12 weeks;

- for female patients who are of child bearing potential, a negative serum pregnancy
test result before study entry. A female patient of childbearing potential is one who
is biologically capable of becoming pregnant. This includes women who are using
contraceptives or other means of birth control or whose sexual partners are either
sterile or using contraceptives;

- and who have provided informed consent by signing the informed consent form.

Main Exclusion Criteria:

Patients who meet any of the criteria listed below will not be eligible for participation
in this study. A patient will not be eligible for study participation if:

- is unable or unwilling to swallow pyrotinib;

- has been < 2 weeks since the last radiotherapy, chemotherapy, hormone therapy, surgery
or molecule-target therapy (< 6 weeks if chemotherapy included nitrosoureas or

- the bone or skin is the only site of disease (for Part 2 extension only);

- has pleural or peritoneal only disease;

- has uncontrolled ≥ grade 2 hypokalemia and hypomagnesemia;

- has had other cancer(s) within 5 years prior to screening with the exception of
contralateral breast carcinoma, adequately treated cervical carcinoma in situ, or
adequately treated basal or squamous cell carcinoma of the skin;

- has active central nervous system (CNS) metastases, as indicated by clinical symptoms,
cerebral edema, and/or progressive growth (patients with a history of CNS metastases
or cord compression are allowable if they have been definitively treated and have been
clinically stable for at least 4 weeks, and off steroids and anticonvulsants, before
first dose of study drug);

- has either QTcF prolongation (> 470 ms for female and > 450 ms for male), a known
history of QTcF prolongation or Torsade de Pointes; or is on drugs that are required
for existing medical conditions and that may result in QT prolongation (e.g.,
anti-arrhythmic drugs); patients who use medications that have a minimal impact on the
QTcF interval in the Arizona-CERT criteria are allowed to participate in this study at
Investigator's discretion based on his/her clinical assessment);

- has a significant chronic or recent acute gastrointestinal disorder with diarrhea as a
major symptom (e.g., Crohn's disease, malabsorption, or ≥ grade 2 diarrhea of any
etiology at baseline);

- has participated in any other investigational drug clinical studies within the last 4

- is concurrently receiving other anti-tumor therapies at time of study screening visit;

- has an active infection (per Investigator judgment);

- has a history of immunodeficiency including seropositive for human immunodeficiency
virus, or has other acquired or congenital immunodeficient disease;

- has evidence of uncontrolled heart disease, including (1) congestive heart failure
(New York Heart Association functional classification) of ≥ 2), (2) angina requiring
treatment (3) myocardial infarction within the past 12 months, or (4) any clinically
significant supraventricular arrhythmia or ventricular arrhythmia requiring treatment
or intervention;

- has allergies or a known history of hypersensitivity to any components of the

- is female and of childbearing potential (WOCBP) who is unwilling or unable to use an
acceptable method (barrier methods only) to avoid pregnancy for the entire study
period and for up to 28 days post last dose;

- is female and pregnant (or found to be pregnant at screening) or breastfeeding;

- evidence of significant medical illness or an abnormal laboratory finding, which
according to the Investigator's judgment, will substantially increase the risk of
participation in and completion of the study. Including, but not limited to, serious
ongoing infection (ie, requiring intravenous antibiotic or antiviral agent),
uncontrolled major seizure disorder, or significant pulmonary disorder (e.g.
interstitial pneumonitis, pulmonary hypertension); hypertension (> grade 3), severe
diabetes (uncontrolled > grade 3 hyperglycemia), serious ongoing infection or thyroid

- has a known history of neurological psychiatric disease including epilepsy or dementia
that would interfere with patient's ability to participate in the study or to provide

- has had prior exposure to any other investigational HER2 targeted agents within 4
weeks of screening visit.

- is currently taking strong CYP3A4 inhibitor or concomitant meds.
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