PF-00299804 Monotherapy in Patients With HER-2 Positive Advance Gastric Cancer (PF299804-AGC)

November 17, 2015 updated by: Seoul National University Hospital

A Phase II Open Label Trial of PF-00299804 Monotherapy in Patients With HER-2 Positive Advance Gastric Cancer After Failure of At Least One Prior Chemotherapy Regimen

In case of gastric cancer, the incidence of HER-2 positivity (2+, 3+ on IHC and/or FISH (+)) is reported as similar as that of breast cancer, that is 22% of all cases. A recent ToGA Trial, phase III trial comparing trastuzumab combined with chemotherapy (fluoropyrimidine+cisplatin) versus chemotherapy alone in chemotherapy-naïve HER-2 (+) gastric cancer shows the significant benefit of using trastuzumab in terms of overall survival and progression-free survival. It provides the clinical evidence of HER-2 as a reasonable and potential therapeutic target in gastric cancer.

Nowadays, lapatinib, HER-1 and HER-2 dual inhibitor, is also testing under the clinical trial in gastric cancer.

In preclinical study, PF-00299804 is highly active in HER-2 amplified gastric cancer cell lines.(SNU preclinical data) So, we plan this phase II trial of PF-00299804 monotherapy in patients with HER-2 positive advance gastric cancer after failure of at least one chemotherapy regimen.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The role of HER-2 during carcinogenesis and its prognostic role in breast cancer has been already well established. Furthermore the value of HER-2 as a reasonable therapeutic target in breast cancer has translated into the good clinical therapeutic result using HER-2 targeting agent, such as trastuzumab and lapatinib.

In case of gastric cancer, the incidence of HER-2 positivity (2+, 3+ on IHC and/or FISH (+)) is reported as similar as that of breast cancer, that is 22% of all cases. A recent ToGA Trial, phase III trial comparing trastuzumab combined with chemotherapy (fluoropyrimidine+cisplatin) versus chemotherapy alone in chemotherapy-naïve HER-2 (+) gastric cancer shows the significant benefit of using trastuzumab in terms of overall survival and progression-free survival. It provides the clinical evidence of HER-2 as a reasonable and potential therapeutic target in gastric cancer.

Nowadays, lapatinib, HER-1 and HER-2 dual inhibitor, is also testing under the clinical trial in gastric cancer.

PF-00299804 is an orally available, potent, and highly selective irreversible small molecule inhibitor of the Human Epidermal Growth Factor Receptor (HER) family of tyrosine kinases:HER-1 (EGFR), HER-2 and HER-4 (HER-3 does not possess kinase activity). PF-00299804 inhibits the tyrosine kinase activity of the HER family through binding at the ATP binding site, which results in covalent modification of a cystine in the ATP binding pocket. The unique irreversible and highly selective properties of PF-00299804 for the HER kinase family results in sustained suppression of receptor tyrosine kinase activity. The long-lasting inhibition of receptor phosphorylation reduces concern over potentially short plasma half-lives. Furthermore, the low nanomolar potency and irreversible binding of the intended targets reduce the need for high peak plasma levels, which in turn could minimize target-nonspecific toxicities.

In preclinical study, PF-00299804 is highly active in HER-2 amplified gastric cancer cell lines.(SNU preclinical data)

Overall, the standard of care for advanced gastric cancer has been of modest benefit with plateau in response rates using various combination chemotherapies. Therefore, development of treatment options for these advanced gastric cancer patients, especially HER-2 (+) gastric cancer patients, remains a target of active research.

So, the investigators plan this phase II trial of PF-00299804 monotherapy in patients with HER-2 positive advance gastric cancer after failure of at least one chemotherapy regimen.

Study Type

Interventional

Enrollment (Actual)

28

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Korea, Republic of
      • Seoul, Korea, Republic of, 110-744
        • Seoul National University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Age > 18 years
  • A patient who is able to walk and should have ECOG performance status of 0-2.
  • Histologically confirmed adenocarcinoma of the stomach or gastro-oesophageal junction with inoperable locally advanced or recurrent and/or metastatic disease, not amenable to curative therapy.
  • HER2 positive tumour (primary tumour or metastasis defined as 1) 3+ on IHC and/or 2) FISH (+)

  • Failure to at least one chemotherapy regimen

    * trastuzumab or lapatinib-pretreated patient is eligible

  • Measurable or non-measurable-evaluable disease according to the Response Evaluation Criteria in Solid Tumors (RECIST)
  • Adequate bone marrow function, including:
  • Adequate renal function, including:
  • Adequate liver function, including:

  • Adequate Cardiac Function, including:

    1. 12-Lead electrocardiogram (ECG) with normal tracing or non-clinically significant changes that do not require medical intervention;
    2. QTc interval 470 msec and without history of Torsades de Pointes or other symptomatic QTc abnormality;
    3. LVEF (by MUGA or echocardiogram) of ≥50%.
  • Brain metastasis allowed if any necessary treatment has been completed and the patient is radiologically and neurologically stable off corticosteroids at least 2 weeks prior to enrollment
  • A patient with the willingness to comply with the study protocol during the study period and capable of complying with it.
  • A patient who signed the informed consent prior to the participation of the study and who understands that he/she has a right to withdrawal from participation in the study at any time without any disadvantages.

Exclusion Criteria:

  • Patients with known active brain metastases or any leptomeningeal metastases;

    a. Patients with previously diagnosed brain metastases for which treatment (radiation or surgery) is recommended in judgment of investigator are eligible if they have completed their CNS treatment and have recovered from the acute effects of radiation therapy or surgery prior to the start of study medication, have discontinued corticosteroid treatment for these metastases for at least 2 weeks and are neurologically stable.

  • Radiotherapy (other than palliative radiotherapy to lesions that will not be followed for tumor assessment on this study, ie, non-target lesions), biological or investigational agents within 2 weeks of baseline disease assessments
  • Any surgery (not including minor procedures) within 4 weeks of baseline disease assessments; or not fully recovered from any side effects of previous procedures;
  • Any clinically significant gastrointestinal abnormalities, which may impair intake, transit or absorption of the study drug, such as the inability to take oral medication in tablet form;
  • Current enrollment in another therapeutic clinical trial;
  • Any psychiatric or cognitive disorder that would limit the understanding or rendering of informed consent and/or compromise compliance with the requirements of this protocol
  • Patients with known interstitial lung disease;
  • Uncontrolled or significant cardiovascular disease
  • Prior malignancy: Patients will not be eligible if they have evidence of other malignancy (other than non-melanoma skin cancer or in situ cervical cancer, or localized and presumed cured prostate cancer with PSA < ULN) within the last 5 years.
  • Organ allogenic transplantation requiring immunosuppressive therapy.
  • A patient who developed uncontrolled serious infection or other uncontrolled serious concomitant diseases.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: single arm
PF00299804 treatment arm
Drug: PF00299804
PF-00299804 will be given orally once daily at 45 mg daily. Patients will take study drug continuously, with cycles of 28 days.
Other Names:
  • PF-00299804

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
progression-free survival at 4-months (PFS4mo)
Time Frame: 10 months
PFS is defined as the interval from the date of enrollment to the date of disease progression or death due to any cause, whichever occurs first. PFS4m is defined as the proportion of patients alive and progression-free at 4 months relative to all enrolled patients.
10 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Overall Response Rate
Time Frame: 6 months
Overall Response Rate (BOR) per RECIST Confirmed responses are defined as those that persist on a follow-up imaging assessment 4 weeks after the initial objective documentation of response.
6 months
Overall Survival (OS)
Time Frame: 2 years
Overall Survival (OS), defined as the time from enrollment to the date of death due to any cause.
2 years
toxicity
Time Frame: 12 months
Overall Safety Profile, as characterized by type, frequency, severity as graded by NCI Common Toxicity Criteria for Adverse Events version 3.0 (NCI CTCAEv3.0), timing and relationship to treatment, and laboratory abnormalities observed.
12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Seoul National University Hospital

Collaborators

Pfizer

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

July 1, 2010

Primary Completion (Actual)

July 1, 2011

Study Completion (Actual)

September 1, 2012

Study Registration Dates

First Submitted

June 20, 2010

First Submitted That Met QC Criteria

June 28, 2010

First Posted (Estimate)

June 29, 2010

Study Record Updates

Last Update Posted (Estimate)

November 20, 2015

Last Update Submitted That Met QC Criteria

November 17, 2015

Last Verified

May 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H-1004-031-315

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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