Trial of DFP-14927 in Advanced Solid Tumors

A Phase I Study of DFP-14927 in Patients With Advanced Solid Tumors

This is a Phase I, open-label, single-arm, dose escalation study of DFP-14927 intravenous infusion administered to patients with refractory or relapsed solid tumors.

Study Overview

• Status: Recruiting
• Conditions: Cancer; Solid Tumor
• Intervention / Treatment: Drug: DFP-14927

Detailed Description

This study will determine the safety and efficacy of DFP-14927 in patients with refractory or relapsed advanced solid tumors. The study will be guided by a standard "3+3"dose escalation by observing the drug-related toxicities and dose-limiting toxicities following weekly IV infusion of DFP-14927 for each 28-day cycle (4 doses per cycle). In addition, the maximum-tolerated dose and recommended Phase II dose for DFP-14927 will be determined.

Furthermore, the study will determine the pharmacokinetics and bioavailability of DFP-14927 during the first cycle of treatment using the weekly dosing schedule.

• Study Type: Interventional
• Enrollment (Estimated): 30
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • California
    • Los Angeles, California, United States, 90095
      • Recruiting
      • UCLA Department of Medicine- Hematology/Oncology
      • Contact: Lisa Yonemoto; Phone Number: 310-582-4069; Email: lyonemoto@mednet.ucla.edu
      • Principal Investigator: Zev Wainberg, MD
  • Texas
    • Houston, Texas, United States, 77030
      • Recruiting
      • MD Anderson Cancer Center
      • Contact: Jackie Smith, R.N.; Phone Number: 713-745-3917; Email: JSmith19@mdanderson.org
      • Principal Investigator: Jaffer Ajani, M.D.

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Patients must have histologically (or cytologically) confirmed diagnosis of solid tumor, refractory after standard therapy for the disease or for which conventional systemic therapy is not reliably effective or no effective therapy is available. Note: For expansion cohorts patients must have histologically (or cytologically) confirmed diagnosis of gastroesophageal cancer, pancreatic cancer, or cholangiocarcinoma that has relapsed or is refractory to standard therapy.
2. Aged ≥ 18 years.
3. ECOG Performance Status of 0 or 1.

4. Adequate clinical laboratory values defined as:

   1. absolute neutrophil count ≥ 1.5 x 10⁹/L
   2. platelets ≥ 100 x 10⁹/L
   3. hemoglobin ≥ 9.0 g/dL (transfusions permissible)
   4. plasma creatinine ≤ 1.5 x upper limit of normal (ULN) for the institution or calculated clearance ≥ 60 mL/min (Cockcroft-Gault formula)
   5. total bilirubin ≤ 1.5 x ULN
   6. alanine transaminase (ALT) and aspartate transaminase (AST) < 2.5 x ULN (<5 x ULN if documented hepatic metastases)
   7. prothrombin time (PT) ≤1.2 x ULN, partial thromboplastin time (PTT) ≤ 1.2 ULN, and international normalized ratio (INR) ≤ 1.5
5. Absence of uncontrolled intercurrent illnesses, including uncontrolled infections, cardiac conditions, uncontrolled diabetes mellitus, or other organ dysfunctions.
6. Patients may have measurable or non-measurable disease as defined by RECIST 1.1.
7. Signed Informed-consent prior to the start of any study specific procedures.
8. Women of child-bearing potential must have a negative serum or urine pregnancy test. Male and female patients must agree to use acceptable contraceptive methods for the duration of the study and for at least one month after the last drug administration.

Exclusion Criteria:

1. Patients will be excluded if they have received previous chemotherapy, immunotherapy, radiotherapy or any other investigational therapy within 4 weeks (6 weeks for nitrosoureas or mitomycin C) or 5 half-lives for targeted therapies prior to this study entry.
2. Have not recovered from adverse events (must be Grade ≤1) due to agents administered more than 4 weeks earlier.
3. Have had any major bleeding episodes (variceal bleeds, hemorrhagic strokes, internal abdominal bleeds, etc.) within 6 months prior to starting study drug.
4. Known hypersensitivity to any study drug component (such as pegylated medications).
5. Extensive prior radiotherapy, more than 30% of bone marrow reserves, or prior bone marrow/stem cell transplantation.
6. Any concomitant condition that in the opinion of the investigator could compromise the objectives of this study and the patient's compliance.
7. Pregnant or lactating individuals.
8. Current malignancies of another type, with the exception of adequately treated in situ cervical cancer and basal cell skin cancer or other malignancies with no evidence of disease for 2 years or more.
9. Known history of HIV, HBV or HCV infection.
10. Documented or known bleeding disorder.
11. Requirement for anticoagulation treatment that increases INR or aPTT above the normal range (low dose DVT or line prophylaxis is allowed).
12. Clinically evident CNS metastases or leptomeningeal disease not controlled by prior surgery or radiotherapy; history of seizure disorder not controlled by anti-seizure medication at the time of enrollment. Patients with primary CNS malignancies are excluded.

13. Patients with a significant cardiovascular disease or condition, including:

    1. Myocardial infarction within 6 months of study entry
    2. NYHA Class III or IV heart failure
    3. Uncontrolled dysrhythmias or poorly controlled angina.
    4. History of serious ventricular arrhythmia (VT or VF, ≥ 3 beats in a row) and/or risk factors (e.g., heart failure, hypokalemia, family history of Long QT Syndrome)
    5. Baseline prolongation of QT/QTc interval (repeated demonstration of QTc ≥ 450 msec for men and 470 msec for women). QTc values up to 500 msec will be acceptable where patient's medical history, e.g. bundle branch block, is known to cause mild QTc prolongation and the condition is well controlled

Study Plan

How is the study designed?

Design Details

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

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: DFP-14927; DFP-14927: weekly IV infusion, 28 day treatment cycle	Drug: DFP-14927; DFP-14927 is a large 4-arm-PEGylated-DFP-10917 molecule. DFP-10917 is a nucleoside analog similar to deoxycytidine.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Determine the maximum tolerated dose (MTD)	The highest dose level at which less than one-third of at least 6 patients (i.e., 0 or 1 out of 6) experience a DLT	From first dose (Day 1) up to 30 days after last dose
Recommended Phase II Dose (RP2D)	The maximum tolerated dose (MTD) of DFP-14927 at which the Phase II study will explore	From first dose (Day 1) up to 30 days after last dose
Dose-Limiting Toxicity (DLT)	Determined through the frequency/severity of adverse events per CTCAE V5.0	From first dose (Day 1) up to 30 days after last dose

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Determine objective response rate (CR or PR) in response to DFP-14927 study treatment	Response to treatment will be assessed per RECIST 1.1	At pre-study and every 8 weeks through study completion, an average of 6 months
Duration of response	Number of days from the time of initial response (CR or PR) to disease progression or death	At pre-study and every 8 weeks through study completion, an average of 6 months
PK parameters to be determined using area under the concentration curve (AUC)	The concentration of DFP-14927 in blood plasma vs time	Cycle 1 (each cycle is 28 days), Day 1: 0, 1, 2, 4, 8, 24, 48, and 96 hours post-dose; Day 8: 0,1, 2, 4, 8, 24, 48, and 96 hours post-dose and predose on Days 15, 22, and 29 (same as Day 1 of next Cycle)
PK parameters to be determined using maximum drug concentration (Cmax)	The maximum concentration of DFP-14927 in blood plasma	Cycle 1 (each cycle is 28 days), Day 1: 0, 1, 2, 4, 8, 24, 48, and 96 hours post-dose; Day 8: 0,1, 2, 4, 8, 24, 48, and 96 hours post-dose and predose on Days 15, 22, and 29 (same as Day 1 of next Cycle)

Collaborators and Investigators

• Sponsor: Delta-Fly Pharma, Inc.
• Investigators: Principal Investigator: Jaffer Ajani, MD, M.D. Anderson Cancer Center

Study record dates

Study Major Dates

• Study Start (Actual): September 30, 2019
• Primary Completion (Estimated): September 1, 2024
• Study Completion (Estimated): December 1, 2024

Study Registration Dates

• First Submitted: April 25, 2019
• First Submitted That Met QC Criteria: May 7, 2019
• First Posted (Actual): May 8, 2019

Study Record Updates

• Last Update Posted (Estimated): January 15, 2024
• Last Update Submitted That Met QC Criteria: January 11, 2024
• Last Verified: January 1, 2024

More Information

Terms related to this study

• Keywords: advanced solid tumors; refractory or relapsed tumors
• Additional Relevant MeSH Terms: Neoplasms
• Other Study ID Numbers: D18-11161

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No