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Addition of Opaganib to Androgen Antagonists in Patients With mCRPC

A Phase II Study of the Addition of Opaganib to Androgen Antagonists in Patients With Prostate Cancer Progression on Enzalutamide or Abiraterone

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04207255
Enrollment
69
Registered
2019-12-20
Start date
2020-03-27
Completion date
2024-07-31
Last updated
2024-09-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Prostate Cancer

Keywords

Yeliva, ABC294640, 103193

Brief summary

This is a Phase II study of the investigational drug opaganib. Patients with metastatic castration resistant prostate cancer (mCRPC) who have experienced disease progression while receiving abiraterone or enzalutamide will receive Opaganib at either 250 mg or 500 mg by mouth twice a day continuously. Patients will continue on study drug until the development of progressive disease, intolerable toxicity, withdrawal of patient consent or other event as outlined in patient discontinuation.

Interventions

500mg of Opaganib orally twice a day continuously.

DRUGAbiraterone

IV as directed by SOC

DRUGEnzalutamide

IV as directed by SOC

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Medical University of South Carolina
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Patient must have mCRPC. Each patient must have: * Tissue diagnosis documented by pathology report, or clinic note attesting to same. * Radiographically-demonstrated metastases * Patients must have adenocarcinoma, or ductal carcinoma, or combinations of these two entities 2. Voluntary, signed and dated, institutional review board (IRB)-approved informed consent form in accordance with regulatory and institutional guidelines. 3. Documented progression during treatment with enzalutamide or abiraterone, as determined by the enrolling investigator. 4. Testosterone level documented to be less than 50ng/ 5. 18 years of age or older. 6. ECOG performance status of 0-2. 7. Acceptable liver function: * Bilirubin ≤ 1.5 times upper limit of normal (CTCAE Grade 1 baseline) * AST (SGOT) & ALT (SGPT) ≤ 3 x ULN (CTCAE Grade 1 baseline) * Subjects with Gilbert's syndrome may be included if the total bilirubin is \<3x ULN and the direct bilirubin is within normal limits 8. Acceptable kidney function indicated by serum creatinine ≤ 1.5 X ULN (CTCAE Grade 1 baseline) 9. Acceptable hematologic status: * Absolute neutrophil count ≥ 1000 cells/mm3, * Platelet count ≥ 75,000 (plt/mm3) (CTCAE Grade 1 baseline) * Hemoglobin ≥ 9.0 g/dL. 10. Fasting blood glucose of \<165mg/dL 11. Urinalysis: no clinically significant abnormalities 12. International normalized ratio (INR) ≤1.7 13. Well-controlled blood pressure as determined by the treating investigator 14. Patients requiring narcotic analgesics must be on stable doses for at least 2 weeks prior to study entry.

Exclusion criteria

1. New York Heart Association Class III or IV, cardiac disease, myocardial infarction within the past 6 months, unstable arrhythmia, or evidence of ischemia on ECG. 2. Underlying psychiatric disorder requiring hospitalization within the last two years. 3. Clinically significant neurological disorder (Parkinson's disease, dementia, multiple sclerosis), as determined by the enrolling investigator. 4. Active, uncontrolled bacterial, viral or fungal infection, requiring systemic therapy. 5. Treatment with radiation therapy, surgery, or investigational therapy within 28 days prior to registration. 6. Unwillingness or inability to comply with procedures required in this protocol. 7. Serious nonmalignant disease that could compromise protocol objectives in the opinion of the Investigator. 8. Patients who are receiving coumadin, apixaban, argatroban or rivaroxaban. Patients who are receiving other drugs that are sensitive substrates of CYP450 1A2, 3A4, 2C9, 2C19 or 2D6, or strong inhibitors or inducers of all major CYP450 isozymes that cannot be stopped at least 7 days or 5 half-lives (whichever is longer) before starting treatment with opaganib may be treated on this study with careful monitoring for toxic effects or loss of efficacy of the relevant drug. A list of commonly used drugs that are sensitive substrates of CYP450 1A2, 3A4, 2C9, 2C19 or 2D6, or strong inhibitors or inducers of all major CYP450 isozymes with the half-life of each drug identified, is included as an Appendix C. 9. Patients who are currently participating in any other clinical trial of an investigational product. 10. Other primary malignancy requiring systemic treatment within past 5 years except carcinoma in situ of the cervix or urinary bladder or non-melanoma skin cancer. 11. Any other mental incapacitation or psychiatric illness that would preclude study participation, as determined by the enrolling investigator. 12. Prisoners or patients who are compulsorily detained (involuntarily incarcerated) for treatment of either a psychiatric or physical (e.g., infectious disease) illness must not be enrolled into this study.

Design outcomes

Primary

MeasureTime frameDescription
Disease Control Status113 daysStable disease or better according to Prostate Cancer Working Group 3 (PCWG3) criteria after four cycles of treatment

Countries

United States

Participant flow

Participants by arm

ArmCount
Cohort 2: Opaganib With Abiraterone
Opaganib: 500mg of Opaganib orally twice a day continuously. Abiraterone: IV as directed by SOC
27
Cohort 3: Opaganib With Enzalutamide
Opaganib: 500mg of Opaganib orally twice a day continuously. Enzalutamide: IV as directed by SOC
36
Cohort 1a: Opaganib With Abiraterone
Abiraterone: IV as directed by SOC Opaganib: 250mg of Opaganib orally twice a day continuously.
3
Cohort 1b: Opaganib With Enzalutamide
Enzalutamide: IV as directed by SOC Opaganib: 250mg of Opaganib orally twice a day continuously.
3
Total69

Baseline characteristics

CharacteristicCohort 2: Opaganib With AbirateroneCohort 3: Opaganib With EnzalutamideCohort 1a: Opaganib With AbirateroneCohort 1b: Opaganib With EnzalutamideTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
23 Participants25 Participants2 Participants3 Participants53 Participants
Age, Categorical
Between 18 and 65 years
4 Participants11 Participants1 Participants0 Participants16 Participants
Age, Continuous71 years71 years67 years71 years71 years
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants0 Participants0 Participants0 Participants1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
25 Participants34 Participants3 Participants3 Participants65 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants2 Participants0 Participants0 Participants3 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
10 Participants9 Participants0 Participants0 Participants19 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
17 Participants26 Participants3 Participants3 Participants49 Participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Male
27 Participants36 Participants3 Participants3 Participants69 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 271 / 360 / 30 / 3
other
Total, other adverse events
27 / 2736 / 363 / 33 / 3
serious
Total, serious adverse events
3 / 2711 / 360 / 30 / 3

Outcome results

Primary

Disease Control Status

Stable disease or better according to Prostate Cancer Working Group 3 (PCWG3) criteria after four cycles of treatment

Time frame: 113 days

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cohort 2: Opaganib With AbirateroneDisease Control Status4 Participants
Cohort 3: Opaganib With EnzalutamideDisease Control Status3 Participants
Cohort 1a: Opaganib With AbirateroneDisease Control Status0 Participants
Cohort 1b: Opaganib With EnzalutamideDisease Control Status0 Participants

Source: ClinicalTrials.gov · Data processed: Feb 16, 2026