Phase 1/2 Study of APR-246 in Combination With Pembrolizumab in Subjects With Solid Tumor Malignancies

Gastric Cancer Clinical Trial

Official title:

Study of APR-246 in Combination With Pembrolizumab in Subjects With Solid Tumor Malignancies

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04383938
• Other study ID #: A20-11195
• Status: Completed
• Phase: Phase 1/Phase 2
• Start date: June 25, 2020
• Est. completion date: April 30, 2022

Study information

• Verified date: June 2022
• Source: Aprea Therapeutics
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

A phase 1/2, open-label, study to determine the safety and preliminary efficacy of APR-246 in combination with pembrolizumab in subjects with solid tumor malignancies. The study will include a safety lead-in portion followed by a phase 2 expansion portion in specific disease groups.

Description:

This is a phase 1/2, open-label, study to determine the safety and preliminary efficacy of APR-246 (eprenetapopt) in combination with pembrolizumab in subjects with solid tumor malignancies. In the safety lead-in part of study (phase 1), the safety and the recommended phase 2 dose (RP2D) of APR-246 will be investigated.

In the expansion part of the study (phase 2), both safety and efficacy for the combination therapy will be investigated in the 3 cohorts.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 37
• Est. completion date: April 30, 2022
• Est. primary completion date: April 30, 2022
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

1. Signed informed consent form (ICF) and ability to comply with protocol requirements.

2. Known tumor TP53 mutation status from recent or archival sample.

3. Histologically and/or cytologically confirmed solid tumor malignancy

1. Safety lead in- Advanced non-central nervous system (CNS) primary tumors that have progressed after first line treatment, who are intolerant to first line treatment, or who are unable to receive first line treatment, and for whom pembrolizumab, or pembrolizumab-based therapy is considered appropriate

2. Expansion 1- Patients with a confirmed diagnosis of advanced gastric or gastroesophageal junction (GEJ) tumors that have progressed after first line treatment, who are intolerant to first line treatment, or who are unable to receive first line treatment

3. Expansion 2- Patients with a confirmed diagnosis of advanced bladder/urothelial tumors that have progressed after first line treatment, or who are intolerant to first line treatment, or who are unable to receive first line treatment with cisplatin-based chemotherapy.

4. Expansion 3- Confirmed diagnosis of advanced non-small cell lung cancer (NSCLC) previously treated with anti-PD-1 or anti-PD-L1 therapy.

4. Adequate organ function

1. Creatinine clearance > 30 mL/min

2. Total serum bilirubin < 1.5 × upper limit of normal (ULN) unless due to Gilbert's syndrome, tumor involvement, hemolysis or considered an effect of regular blood transfusions

3. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) < 3 × ULN, unless due to involvement by the underlying malignancy.

5. Projected life expectancy of = 12 weeks.

6. Age = 18 years at the time of signing the ICF.

7. Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1 or 2

8. In the expansion portion, measurable disease meeting the following criteria:

1. At least 1 lesion of =10 mm in the longest diameter (LD) for a non-lymph node or =15 mm in the short-axis diameter for a lymph node that is serially measurable according to RECIST 1.1.

2. Lesions that have had external beam radiotherapy or loco-regional therapies such as radiofrequency ablation must show subsequent evidence of substantial size increase (ex. 20% increase in LD) to be deemed a target lesion.

9. Negative serum or urine pregnancy test prior to study treatment initiation in female subjects of childbearing potential.

10. Women of childbearing potential and men with female partners of childbearing potential must be willing to use an effective form of contraception

Exclusion Criteria:

1. Known history of untreated human immunodeficiency virus (HIV)/HIV with a detectable viral load or active hepatitis B or active hepatitis C infection.

2. Cardiac abnormalities

3. Concomitant malignancies or previous malignancies with less than a 1-year disease-free interval at the time of signing consent.

4. Pregnancy or lactation.

5. Active uncontrolled systemic infection.

6. An autoimmune condition requiring = 10 mg (or equivalent corticosteroid) prednisone daily, or any other systemic immunosuppressive treatment within 28 days of first dose of study therapy.

7. Known history of active tuberculosis.

8. Current (non-infectious) pneumonitis, or a history of pneumonitis that required steroids.

9. A live vaccine administered within 30 days of the first dose of study treatment.

10. Receipt of any investigational product within 14 days or 5 half-lives prior to study treatment initiation, whichever is shortest.

11. Prior intolerance to pembrolizumab or other anti-PD-1/PD-L1 agents.

Related Conditions & MeSH terms

• Advanced Solid Tumor
• Bladder Cancer
• Carcinoma, Transitional Cell
• Gastric Cancer
• Non Small Cell Lung Cancer
• NSCLC
• Urothelial Carcinoma

Intervention

Drug:
• APR-246 (eprenetapopt) + Pembrolizumab
APR-246 D1-4 + Pembrolizumab D3

Locations

Country	Name	City	State
United States	Dana Farber Cancer Center	Boston	Massachusetts
United States	Massachusetts General Hospital	Boston	Massachusetts
United States	MD Anderson Cancer Center	Houston	Texas
United States	Mayo Clinic	Jacksonville	Florida
United States	Vanderbilt University	Nashville	Tennessee
United States	Mayo Clinic	Phoenix	Arizona
United States	Mayo Clinic	Rochester	Minnesota
United States	Washington University	Saint Louis	Missouri

Sponsors (1)

Lead Sponsor	Collaborator
Aprea Therapeutics

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	To evaluate the safety and tolerability of APR-246 in combination with pembrolizumab in subjects with solid tumors.	To determine the occurrence of dose limiting toxicities (DLTs), classified and graded according to the National Cancer Institute's Common Terminology Criteria for Adverse Events Frequency of treatment-emergent adverse events (TEAEs), and serious adverse events (SAEs) related to APR-246 in combination with pembrolizumab.	Through study completion, approximately 1 year
Primary	To confirm the maximum tolerated dose (MTD) for APR-246 in combination with pembrolizumab	To determine the dose of APR-246 to be selected for the expansion phase based on the occurence of dose limiting toxicities (DLTs) experienced during the safety assessment period	Through safety lead in period, approximately 6 months