A Dose Escalation Trial of PR610 Treating Patients With Solid Tumors

This study has been terminated.
(Study was prematurely discontinued due to unacceptable toxicity.)
Sponsor:
Information provided by (Responsible Party):
Proacta, Incorporated
ClinicalTrials.gov Identifier:
NCT01631279
First received: June 7, 2012
Last updated: June 13, 2014
Last verified: June 2014
  Purpose

The purpose of this study is to determine the Maximum Tolerated Dose and the Dose-Limiting Toxicity of the drug to further evaluate safety and antitumor activity.


Condition Intervention Phase
Unspecified Adult Solid Tumor, Protocol Specific
Drug: PR610
Phase 1
Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Phase I/II, Multi-Center, Open-Label, Dose Escalation Trial of the Safety and Pharmacokinetics of Intravenous PR610 Given Weekly in Subjects With Solid Tumors

Resource links provided by NLM:


Further study details as provided by Proacta, Incorporated:

Primary Outcome Measures:
  • Determine the Maximum Tolerated Dose (MTD) of PR610 for Both a 1-hour and a 24-hour Weekly IV Infusion [ Time Frame: 3 weeks (1 cycle) ] [ Designated as safety issue: Yes ]
    The first cohort of three subjects will receive PR610 at Dose Level 1. Subsequent cohorts will receive PR610 at a dose levels determined as per dose escalation criteria. The MTD will be defined as the dose level at which one (1) or fewer subject in six exhibit DLT with the next highest dose level demonstrating two (2) or more of six (6) subjects with DLT (or for which more than ≥33% of subjects exhibit DLT if the cohort size exceeds 6 subjects).

  • Determine the Dose-Limiting Toxicity (DLT) of PR610 for Both a 1-hour and a 24-hour Weekly IV Infusion [ Time Frame: 3 weeks (1 Cycle) ] [ Designated as safety issue: Yes ]

    DLT is defined as the following:

    • Occurs during the first cycle of PR610
    • Is considered PR610-related, as defined by "Definitely-related", "Probably-related" or "Possibly-related"
    • Is clinically significant, as determined by the Principal Investigator

    In addition, DLT will meet at least one of the criteria listed below using grading criteria from the CTCAEv4.

    • Grade 4 hematologic toxicity
    • Any drug-related toxicity that prevents administration of 100% of all doses of PR610 planned for Cycle 1
    • Grade 3 or higher non-hematologic toxicity


Secondary Outcome Measures:
  • Evaluate the safety profile of PR610: Adverse Events [ Time Frame: 30 days following the last administration of study treatment ] [ Designated as safety issue: Yes ]
    The number of adverse events experienced by participants will be measured.

  • Peak Plasma Concentration (Cmax) of PR610 and PR610E for Both a 1-hour and a 24-hour Weekly Infusion [ Time Frame: pre, 30 minutes into infusion, end of infusion, 1, 2, 4, 24, 48, and 72 hours post-infusion on Cycles 1 and 2 ] [ Designated as safety issue: No ]
  • Evaluate the activity of PR610 in a general phase I population and in a subset of subjects with NSCLC genetically resistant to reversible EGFR inhibitors [ Time Frame: 30 days following the last administration of study treatment ] [ Designated as safety issue: No ]

    Efficacy will be determined for each subject that received at least one dose of PR610 and had at least one post-baseline disease assessment. The following four outcomes will be tabulated:

    Tumor response Time to response Duration of response Progression-free survival


  • Time of Peak Plasma Concentration (tmax) of PR610 and PR610E for Both a 1-hour and a 24-hour Weekly Infusion [ Time Frame: pre, 30 minutes into infusion, end of infusion, 1, 2, 4, 24, 48, and 72 hours post-infusion on Cycles 1 and 2 ] [ Designated as safety issue: No ]
  • Half life (t1/2) of PR610 and PR610E for Both a 1-hour and a 24-hour Weekly Infusion [ Time Frame: pre, 30 minutes into infusion, end of infusion, 1, 2, 4, 24, 48, and 72 hours post-infusion on Cycles 1 and 2 ] [ Designated as safety issue: No ]
  • Area Under the Curve (AUC) of PR610 and PR610E for Both a 1-hour and a 24-hour Weekly Infusion [ Time Frame: pre, 30 minutes into infusion, end of infusion, 1, 2, 4, 24, 48, and 72 hours post-infusion on Cycles 1 and 2 ] [ Designated as safety issue: No ]
  • Clearance (CL) of PR610 and PR610E for Both a 1-hour and a 24-hour Weekly Infusion [ Time Frame: pre, 30 minutes into infusion, end of infusion, 1, 2, 4, 24, 48, and 72 hours post-infusion on Cycles 1 and 2 ] [ Designated as safety issue: No ]

Enrollment: 33
Study Start Date: August 2012
Estimated Study Completion Date: August 2015
Estimated Primary Completion Date: March 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: PR610 Drug: PR610
Dose escalation of PR610 to determine maximum tolerated dose for weekly administration

Detailed Description:

Following informed consent, subjects undergo baseline evaluation and disease assessment. PR610 is administered intravenously weekly.

In the absence of progressive disease or unacceptable toxicity, subjects may continue to receive PR610. Intra-subject dose escalation (to no higher than the highest safe level) is allowed in subjects who are not experiencing dose limiting toxicity. Disease assessment will be repeated at week 6 and then every 8 weeks thereafter.

Pharmacokinetic (PK) assessment (PR610 and PR610E) will be performed for all subjects.

After determination of the MTD and the determination of the phase II dose, additional subjects with NSCLC that is genetically resistant to reversible EGFR inhibitors will be accrued into an expansion cohort.

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Signed informed consent
  • Age 18 years or more
  • Histologically-confirmed, progressive cancer with the following diagnosis:

    1. Phase I: locally advanced or metastatic solid tumor that may respond to an EGFR inhibitor;
    2. Phase II: Stage IIIB or IV, non-squamous, non-small cell lung cancer (NSCLC) with known sensitizing mutations in EGFR, and the T790M resistance mutation
  • Failed, refused, or not eligible for standard of care therapy
  • ECOG performance status of 0, 1, or 2
  • Life expectancy of at least 12 weeks
  • At least 4 weeks from prior anticancer therapy including chemotherapy, hormonal, investigational, and/or biological therapies and irradiation. Ongoing hormonal therapy administered for control of prostate cancer which may be continued through the study. In addition, in the phase II portion of the study, prior reversible EGFR tyrosine kinase inhibitor therapy, such as erlotinib or gefitinib, may be continued up to 48 hours prior to start of PR610 to prevent significant disease flare.
  • Recovered from prior treatment related toxicity

    1. except for grade 1 fatigue, grade 1 peripheral sensory neuropathy and grade 1 or 2 alopecia during the phase I portion of the study
    2. except for grade 1 toxicity, and grade 2 peripheral neuropathy during the phase II portion of the study
  • At least four (4) weeks from prior major surgery
  • Women of child-bearing potential must be willing to use an acceptable contraceptive method and must have a negative urine or serum pregnancy test within 2 weeks prior to beginning treatment on this trial
  • Sexually active men must be willing to use an acceptable contraceptive method
  • Adequate hematological and biological function
  • Willingness to participate in PK sampling during cycles 1 and 2
  • Willingness to provide permission to access archived tumor samples for evaluation of EGFR mutation status
  • Willingness to provide samples for storage of normal tissue containing wild-type DNA

Additional Inclusion Criteria during Expansion Phase

  • At least one target lesion as defined by RECIST 1.1 that allows for evaluation of tumor response

Exclusion Criteria:

  • Pregnant or nursing women
  • Any uncontrolled medical illness including, but not limited to, significant gastrointestinal disorders, cardiovascular disease, or interstitial lung disease
  • History of clinically significant cardiovascular abnormalities, eg., uncontrolled hypertension, CHF (NYHA classification ≥2), unstable angina, poorly controlled arrhythmias, myocardial infarction within 6 months of study entry, implantable pacemaker or implantable cardioverter defibrillator
  • Clinically significant abnormal 12-lead ECG with QTcF >450 msec
  • Use of any medications known to produce QT prolongation
  • Family history of Long QT Syndrome
  • Prior treatment with anthracyclines with a cumulative dose of doxorubicin (or equivalent) ≥400 mg/m2
  • Cardiac left ventricular function with resting ejection fraction of less than 50%
  • Symptomatic CNS lesions or known CNS lesions that require therapy
  • Prior history of an allergic reaction to a tyrosine kinase inhibitor

Additional Exclusion Criteria during Expansion Phase

  • Any other malignancy likely to effect the assessment of toxicity or efficacy of PR610
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01631279

Locations
United States, Arizona
Scottsdale Healthcare
Scottsdale, Arizona, United States, 85258
United States, California
University of California-Davis Comprehensive Cancer Ctr
Sacramento, California, United States, 95817
United States, Illinois
Robert H. Lurie Comprehensive Cancer Research Center
Chicago, Illinois, United States, 60611
United States, Texas
South Texas Accelerated Research Therapeutics
San Antonio, Texas, United States, 78229
New Zealand
Auckland City Hospital
Auckland, New Zealand
Waikato Hospital
Waikato, New Zealand
Sponsors and Collaborators
Proacta, Incorporated
Investigators
Study Chair: Proacta Inc. Proacta, Incorporated
  More Information

No publications provided

Responsible Party: Proacta, Incorporated
ClinicalTrials.gov Identifier: NCT01631279     History of Changes
Other Study ID Numbers: PR610-1001
Study First Received: June 7, 2012
Last Updated: June 13, 2014
Health Authority: United States: Food and Drug Administration
New Zealand: Medsafe

Keywords provided by Proacta, Incorporated:
NSCLC
non-small cell lung cancer
non-squamous, non-small cell lung cancer
solid tumors
lung cancer

Additional relevant MeSH terms:
Neoplasms

ClinicalTrials.gov processed this record on July 29, 2014