ClinicalTrials.gg
CompletedNCT03419442Updated Oct 22, 2020

Multi-academic Center Study of Xofigo Patients

An observational study in Prostate Cancer, Castration Resistant, sponsored by Bayer. Completed at 1 site in United States. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-10-22.

Sponsored by Bayer · Observational

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Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
150
Ages
18 Years and older
Sex
Male
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 75 studies in Prostatic Neoplasms by Bayer — 11 open to participants now, 16 under way, 1 of them phase 3. Prostatic Neoplasms · Bayer.

Enrollment
30th of 40
150 · median 700
Started
2018
with 1 other
Observational
40 of 75
8 open now
Registered
36th of 75
by date

Among the 75 studies in Prostatic Neoplasms by Bayer, this one is the 30th largest by enrollment of the 40 observational ones that give a count, is one of 2 that started in 2018, is one of 40 observational ones, and was the 36th registered.

Prostatic Neoplasms

7,046 studies on the registry are indexed under Prostatic Neoplasms; 1,579 are open to participants now.

Browse Prostatic Neoplasms studies →

Open to participants now

11 of the 75 studies in Prostatic Neoplasms by Bayer are open now, in 12 countries. Recruiting first, the newest first:

6 more — sign in →

By country, each count listing its studies:

All 11 open studies →

Who these studies take

Of the 1,228 Prostatic Neoplasms studies recruiting now, 927 (75%) set no upper age limit and 76 (6%) stop at 75 or younger; 67 take children under 18; 82 take healthy volunteers.

This study: 18 Years and older · male · no healthy volunteers.

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02

Study summary

The study will be conducted from a real-world perspective to describe treatment sequences involving radium-223 and chemotherapy in patients with metastatic castrate resistant prostate cancer (mCRPC) and assess overall survival (OS) associated with treatment sequences involving radium-223 and chemotherapy. While clinical trials of radium-223 has demonstrated a survival benefit in the treatment of mCRPC, both pre and post- docetaxel, study lacked exposure to second generation androgens and hence could not assess outcomes pre or post abiraterone or enzalutamide.

The specific objective of this study is to describe and compare the clinical outcomes between treatment sequences for patients with mCRPC where 1) radium-223 is used (alone or in combination with abiraterone or enzalutamide) prior to chemotherapy versus 2) radium-223 used after chemotherapy in the treatment of mCRPC. The secondary objectives are to describe the safety patterns of docetaxel use among mCRPC patients who received chemotherapy post radium-223.

03

Conditions studied

  • Prostate Cancer, Castration Resistant

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Keywords

  • Prostate cancer
  • Bone metastases
  • Xofigo
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

The study population will be comprised of patients with CRPC and bone metastasis who have received at least one dose of radium-223 at one of the participating cancer centers. The participating centers are 4 tertiary care cancer centers (Dana Farber Cancer Institute, Tulane Cancer Center, Memorial Sloan Kettering Cancer Center and Beth Israel Deaconess Medical Center)

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Inclusion criteria

  • Received at least one dose of radium-223 after mCRPC diagnosis
  • Received at least one prescription or dose of chemotherapy for treatment of mCRPC

Exclusion criteria

Exclusion Criteria:

  • No documented visceral at initiation of radium-223
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

05

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
150 participants (actual)
Patient registry
No

Groups and cohorts

  • Ra-223 therapy before chemotherapy

    Treatment sequence 1 will include all mCRPC patients who received Ra-223 alone or in combination with abiraterone or enzalutamide and subsequently received chemotherapy

    Drug: Xofigo · Drug: Taxotere · Drug: Jevtana

  • Ra-223 after chemotherapy

    Treatment sequence 2 includes all mCRPC patients who received chemotherapy before Radium 223 therapy

    Drug: Xofigo · Drug: Taxotere · Drug: Jevtana

Interventions

  • DrugXofigo

    Radium-223, 55kBq (1.49 microcurie) per kg body weight given at 4 week intervals for 6 injection

  • Docetaxel injection 75mg/m2 every 3 weeks

  • Cabazitaxel injection 25mg/m2 intravenously once every 3 weeks

06

What researchers measure

Primary outcomes

  1. Overall survival

    Survival will be measured from initiation of first line therapy after mCRPC diagnosis until the date of death (from any cause).

    Time frame: Up to 30 months

  2. Time to symtomatic skeletal event(SSE)

    Measured as the time from initiation of first-line therapy after mCRPC diagnosis until first SSE; for the exploratory analysis, measured as the time from initiation of radium-223 until first SSE. SSE will be identified based on the ALSYMPCA trial definition: first use of external-beam radiation therapy (EBRT) to relieve skeletal symptoms, new symptomatic pathologic vertebral or non-vertebral bone fractures, spinal cord compression, or tumor-related orthopedic surgical intervention

    Time frame: Up to 30 months

  3. Reasons for treatment discontinuation

    data for treatment discontinuation for each mCRPC therapy will be collected

    Time frame: Up to 30 months

Secondary outcomes

  1. Laboratory-based outcomes collected by questionnaire

    Data will be collected as available from initiation of docetaxel until 3 months following last dose of docetaxel

    Time frame: Up to 30 months

  2. Treatments received

    measured as Yes/No

    Time frame: Up to 30 months

  3. Number of hospitalizations

    along with the discharge diagnosis, as recorded in medical charts or discharge summaries

    Time frame: Up to 30 months

  4. PSA PFS

    defined as death or an increase above PSA nadir by ≥25% and ≥2 ng/mL (PCWG 2008 definition for Prostate specific antigen(PSA) Progression-free survival(PFS))

    Time frame: Up to 30 months

  5. Non-laboratory based clinically relevant safety outcomes

    documented in medical records

    Time frame: Up to 30 months

  6. hospital length of stay

    Time frame: Up to 30 months

07

Study locations

1 site
  • Bayer US
    Whippany, New Jersey 07981, United States
08

References and documents

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Dec 2018 to primary completion in Oct 2019, 10 months.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 4, 2018
First posted
Feb 5, 2018
StartActual
Dec 3, 2018
Primary completionActual
Oct 22, 2019
CompletionActual
Oct 22, 2019
Last update
Oct 22, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 22, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03419442
Lead sponsor
Bayer
Responsible party
Sponsor
First posted
Feb 5, 2018
Start date
Dec 3, 2018
Primary completion
Oct 22, 2019
Completion
Oct 22, 2019
Last update
Oct 22, 2020

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2020. You cannot join it, but the record below documents what was studied.

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