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SuspendedNCT05361915Updated Mar 18, 2024

Study to Assess Abivertinib in Combination With Abiraterone in Metastatic Castration Resistant Prostate Cancer

A Phase 2 interventional study of Abivertinib and Abiraterone in Prostate Cancer and Prostate Cancer Metastatic, sponsored by Sorrento Therapeutics, Inc.. Suspended at 2 sites in United States. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-03-18.

Sponsored by Sorrento Therapeutics, Inc. · Phase 2, Interventional, and Treatment

Why this study was suspended
Sorrento Therapeutics filed for chapter 11 bankruptcy.
Phase
Phase 2
Study type
Interventional
Enrollment
100
Allocation
Non-randomized
Ages
18 Years and older
Sex
Male
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Study summary

This is a phase 2, multicenter, open-label study to evaluate the efficacy of abivertinib with abiraterone in patients with metastatic castration-resistant prostate cancer.

Read the detailed description

This is a phase 2, multicenter, open-label study to evaluate the efficacy of abivertinib with abiraterone in patients with metastatic castration-resistant prostate cancer via assessment of 6-month radiographic progression-free survival. The study will include two cohorts, abiraterone-naive and abiraterone-progressing.

02

Conditions studied

  • Prostate Cancer
  • Prostate Cancer Metastatic

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Keywords

  • metastatic prostate cancer
  • castration-resistant prostate cancer
03

In context

Prostatic Neoplasms

6,370 studies on the registry are indexed under Prostatic Neoplasms; 1,400 are open to participants now.

This study's planned enrollment of 100 is above the median of 58 across 4,822 interventional studies indexed under Prostatic Neoplasms.

Browse Prostatic Neoplasms studies →

Lead sponsor

Sorrento Therapeutics, Inc. is the lead sponsor of 46 studies on the registry; 4 are open to participants now.

Of its 10 completed or terminated interventional studies of FDA-regulated products, 1 (10%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No

Inclusion criteria

  • Age ≥ 18 years of age
  • Metastatic disease as identified by imaging
  • Progressive mCRPC as defined by: 1) castrate levels of serum testosterone \< 50 ng/dL and 2) progressive disease
  • Continued primary androgen deprivation with LHRH analogue (agonist or antagonist) if subject has not undergone bilateral orchiectomy
  • Germline testing for HSD3B1. Confirmation of positivity for the adrenal-permissive HSD3B1(1245C) allele (germline heterozygous or homozygous) will be done centrally
  • For abiraterone-progressing cohort, abiraterone must be the most immediate preceding line of therapy
  • Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2
  • Adequate organ and marrow function

Exclusion criteria

Exclusion Criteria:

  • Significant small cell or neuroendocrine component or histology
  • Prior enzalutamide, apalutamide, or darolutamide exposure for either hormone sensitive or CRPC. Prior abiraterone is prohibited for the abiraterone-naïve combination cohort
  • Prior BTK inhibitor treatment
  • Need for concurrent CYP3A inducers and inhibitors
  • Any condition including the presence of laboratory abnormalities that places the patient at unacceptable risk if the patient was to participate in the study
  • Corrected QT interval calculated by the Fridericia formula per electrocardiogram within 14 days before Cycle 1 Day 1
  • Any uncontrolled active systemic infection including any infection requiring systemic IV treatment that was completed ≤ 7 days before Cycle 1 Day 1, including active infection with COVID-19, defined as 10 days from the end of COVID-19 symptoms
  • Have human immunodeficiency virus (HIV) infection, human T-cell leukemia virus type 1 (HTLV1) infection, or hepatitis B virus (HBV) or hepatitis C virus (HCV) viremia or are at risk for HBV reactivation (at risk for HBV reactivation is defined as being HBs antigen positive, or anti-HBc-antibody positive), or are positive for HBV deoxyribonucleic acid (DNA). HCV ribonucleic acid (RNA) must be undetectable by laboratory test
  • Imminent or established spinal cord compression based on clinical and/or imaging findings
  • Known brain metastases or cranial epidural disease unless adequately treated with radiotherapy and/or surgery and stable for at least 4 weeks prior to Cycle 1 Day 1
  • Major surgery within 4 weeks before Cycle 1 Day 1. Minor surgeries within 10 days before Cycle 1 Day 1. Subjects must have complete wound healing from major surgery or minor surgery before first dose of study treatment. Subjects with clinically relevant ongoing complications from prior surgery are not eligible
  • Radiation therapy within 2 weeks before Cycle 1 Day
  • Participation in another investigational trial and received treatment within 4 weeks before Cycle 1 Day 1
  • Any other active malignancy at the time of first dose of study treatment or diagnosis of another malignancy within 2 years prior to Cycle 1 Day 1 that requires active treatment, except locally curable cancers
  • Unable to swallow tablets/capsules whole
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Single group
Masking
None (open label)
Enrollment
100 participants (estimated)

Study arms

  • Experimental
    Abivertinib - Abiraterone-naive

    Abiraterone-naive: Abivertinib 200 mg by mouth twice daily with abiraterone 1000 mg by mouth daily.

    Drug: Abivertinib · Drug: Abiraterone

  • Experimental
    Abivertinib - Abiraterone-progressing

    Abiraterone-progressing: Abivertinib 200 mg by mouth twice daily with abiraterone 1000 mg by mouth daily.

    Drug: Abivertinib · Drug: Abiraterone

Interventions

  • DrugAbivertinib

    Abivertinib is a small molecule inhibitor

    Also known as: STI-5656

  • DrugAbiraterone

    Hormone-based chemotherapy

06

What researchers measure

Primary outcomes

  1. 6-month radiographic progression-free survival

    6-month radiographic progression-free survival (rPFS) will be assessed as defined by percent of subjects alive and without progression by Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 for measurable disease and Prostate Cancer Working Group 3 (PCWG3) criteria for bone metastases.

    Time frame: baseline through study completion at up to approximately 63 months

Secondary outcomes

  1. Overall Response Rate

    Overall Response Rate (ORR) will be defined by percent of subjects alive and without progression by Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1.

    Time frame: baseline through study completion at up to approximately 63 months

  2. Duration of response

    duration of response will be defined as the time from the first documented response in patients with measurable disease to the date of progression or death due to any cause.

    Time frame: baseline through study completion at up to approximately 63 months

  3. Prostate-Specific Antigen (PSA) progression

    Change in PSA as compared to baseline as defined by Prostate Cancer Working Group 3 (PCWG3) criteria

    Time frame: baseline through study completion at up to approximately 63 months

  4. Safety and tolerability

    Safety and tolerability of abivertinib with abiraterone using Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 criteria.

    Time frame: baseline through study completion at up to approximately 63 months

  5. Time to occurrence of first skeletal event

    Time to occurrence of first symptomatic skeletal event will be defined as the time from enrollment to the first symptomatic skeletal event defined as use of external beam radiotherapy to relieve skeletal symptoms or the occurrence of new symptomatic pathological bone fractures (vertebral or non-vertebral) or the occurrence of spinal cord compression or a tumor related orthopedic surgical intervention.

    Time frame: baseline through study completion at up to approximately 63 months

  6. Time to first subsequent anti-cancer therapy

    Time to first subsequent anti-cancer therapy will be defined as the time from treatment discontinuation for any reason to start of subsequent anti-cancer therapy or death.

    Time frame: baseline through study completion at up to approximately 63 months

  7. 6-month radiographic progression-free survival (rPFS)

    6-month radiographic progression-free survival (rPFS) will be defined as the time from enrollment to progression by by Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1 for measurable disease and and Prostate Cancer Working Group 3 (PCWG3) criteria for bone metastases or death, whichever occurs first.

    Time frame: baseline through study completion at up to approximately 63 months

  8. Overall survival

    Overall survival will be defined as the time from enrollment to death

    Time frame: baseline through study completion at up to approximately 63 months

07

Study locations

2 sites
  • UCSD Moores Cancer Center
    La Jolla, California 92037, United States
  • Cleveland Clinic
    Cleveland, Ohio 44195, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 18, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05361915
Lead sponsor
Sorrento Therapeutics, Inc.
Responsible party
Sponsor
First posted
May 5, 2022
Start date
Sep 2025 (estimated)
Primary completion
Jan 2028 (estimated)
Completion
Jan 2028 (estimated)
Last update
Mar 18, 2024

Study contacts

Mike Royal, MD
study director · Sorrento Therapeutics, Inc.

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is suspended, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.

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