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Enzalutamide + External Beam Rt For Prostate

Enzalutamide With External Beam Radiation for Intermediate Risk Prostate Cancer: A Phase II Study

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02028988
Enrollment
64
Registered
2014-01-07
Start date
2014-02-28
Completion date
2018-01-31
Last updated
2023-05-06

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

Conditions

Intermediate Risk Prostate Cancer

Keywords

Intermediate Risk Prostate Cancer

Brief summary

This research study is evaluating a drug called enzalutamide in combination with external beam radiation therapy as a possible treatment for prostate cancer. Presently, when participants receive hormonal therapy with radiation therapy for prostate cancer, medications are given to reduce testosterone levels in the blood stream. This leads to side effects such as loss of sex drive, erectile dysfunction (ED) and decrease in muscle strength. The purpose of this study is test another form of hormonal therapy with radiation therapy. The medication called enzalutamide will be used with radiation therapy. Instead of lowering testosterone, enzalutamide blocks testosterone in cells. This study will test if enzalutamide when used with radiation will lower the PSA without causing the side effects associated with medications that lower testosterone in the blood stream.

Detailed description

* The participant will be given a study drug-dosing diary for each of 6 treatment cycles. Each treatment cycle lasts 28 days (4 weeks), during which time the participant will be taking the study drug enzalutamide by mouth (4 pills daily). The diary will also include special instructions for taking the enzalutamide. * The participant will also be undergoing external beam radiation therapy during the study, for a duration of 8 ½-10 weeks. Treatment will be administered on an outpatient basis. This part of the study is considered standard of care. * The participant will be required to have fiducial markers placed within the prostate as part of this study. These are very small gold markers that are placed in the prostate. This procedure is similar to the biopsy that the participant had to diagnose their cancer. This procedure is routinely performed to permit imaging and position corrections to improve the precision of the external beam (radiation) delivery (Image Guided Radiation Therapy). The placement of the three gold markers is performed by an Urologist. The fiducials are placed under ultrasound guidance. This is also considered standard of care and is not experimental. * Planned Follow-up: Participants will be followed on study at a 3 month follow-up after treatment (cessation of enzalutamide). Additional follow-up to assess the status of the participant's cancer will be conducted at the discretion of the treating physicians as part of the participant's routine medical care.

Interventions

DRUGEnzalutamide

Sponsors

Medivation, Inc.
CollaboratorINDUSTRY
Dana-Farber Cancer Institute
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Study population: Participants must have histologically confirmed malignancy and are candidates for external beam radiation therapy. Patients eligible for this study must have intermediate risk disease defined as PSA values between 10-20 ng/ml and/or T2b-c and/or Gleason grade 7. If all three are present, less than 50% of the core biopsies can be positive. * Patients previously diagnosed with low risk (Gleason score \< 6, clinical stage \< T2a, and PSA\< 10) prostate cancer undergoing active surveillance who are re-biopsied and found to have intermediate risk disease according to the protocol criteria are eligible for enrollment within 180 days of the repeat biopsy procedure. * Age 18 years or more. * Life expectancy of greater than 1 year. * ECOG performance status ≤ 2 (see Appendix D). * Participants must have normal organ and marrow function as defined below: * Leukocytes ≥3,000/mcL * Platelets ≥80,000/mcL * Total bilirubin \< 2X institutional upper limit * AST (SGOT)/ALT (SGPT) ≤ 2.5 X institutional upper limit of normal * Creatinine \< 2x institutional limits . * The effects of enzalutamide on the developing human fetus are unknown. For this reason and because enzalutamide may be teratogenic, men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation. Ability to understand and the willingness to sign a written informed consent

Exclusion criteria

* Patients must NOT meet any of the following

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With PSA at or Below 0.2 ng/mlEnd of treatment, up to 27 weeks.Percentage of participants with PSA level of less than or equal to 0.2 ng/ml at the end of six cycles of enzalutamide and EBRT treatment. Post-treatment PSA nadir level has been shown to be a validated intermediate cancer endpoint in similar settings. The chosen cut-off of 0.2 ng/ml was informed by D'Amico et al Lancet Oncology 2012. PSA levels determined through established methods (blood draw and serum analysis).

Secondary

MeasureTime frameDescription
Median AndrostenedioneAssessed cycle 1, cycle 5, and end of treatment, up to 27 weeksMedian androstenedione, collected and assessed using established methods. Reference range is 40-150 ng/dL for adult males.
Median TestosteroneAssessed cycle 1, cycle 5, and end of treatment, up to 27 weeksMedian testosterone, collected and assessed using established methods. Reference range is 300-1050 ng/dL for adult males.
Median Free TestosteroneAssessed cycle 1, cycle 5, and end of treatment, up to 27 weeksMedian free testosterone, collected and assessed using established methods. Reference range is 350-1200 ng/dL for adult males.
Median EstroneAssessed cycle 1, cycle 5, and end of treatment, up to 27 weeksMedian estrone, collected and assessed using established methods. Reference range is 12-72 pg/mL for adult males.
Median EstradiolAssessed cycle 1, cycle 5, and end of treatment, up to 27 weeksMedian estradiol, collected and assessed using established methods. The reference range is 13-42 pg/mL for adult males.
Median Bicep Fat Fold MeasurementAt baseline and end of treatment, up to 27 weeksMedian bicep fat fold measurement taken at baseline and end of treatment.
Median Tricep Fat Fold MeasurementAt baseline and end of treatment, up to 27 weeksMedian tricep fat fold measurement taken at baseline and end of treatment.
Median Shoulder Blade Fat Fold MeasurementAt baseline and end of treatment, up to 27 weeksMedian shoulder blade fat fold measurement taken at baseline and end of treatment.
Median Waist Fat Fold MeasurementAt baseline and end of treatment, up to 27 weeksMedian waist fat fold measurement taken at baseline and end of treatment.
Median Waist CircumferenceAt baseline and end of treatment, up to 27 weeksMedian waist circumference taken at baseline and end of treatment.
Median DHEA-SAssessed cycle 1, cycle 5, and end of treatment, up to 27 weeksMedian DHEA-S, collected and assessed using established methods. Reference range is 28-640 ug/dL for adult males.
Number of Participants With a Sleep Quality Score of 0 or 1Measured at cycles 1, 3, and 5.Sleep quality measure of the Pittsburgh Sleep Quality Index (PSQI) is scored from 0-3 \[0=Very bad, 1=Fairly bad, 2=Fairly good, 3=Very good\]. The higher the score, the better the sleep quality.
Urinary Incontinence Median ScoreMeasured at cycles 1, 3, and 5.Urinary incontinence evaluated using the Expanded-Prostate Index Composite - 26 (EPIC 26) EPIC-26 evaluates patient's urinary incontinence (4 items). The 4 items are reported on a scale of 0 - 100. A higher score indicates better urinary function.
Urinary Irritation Median ScoreMeasured at cycles 1, 3, and 5.Urinary irritation evaluated using the Expanded-Prostate Index Composite - 26 (EPIC 26). EPIC-26 evaluates urinary irritation/obstruction (4 items). The final score from the 4 items is reported on a scale of 0 - 100. A higher score indicates better urinary function.
Bowel Function Median ScoreMeasured at cycles 1, 3, and 5.Bowel function measure through the Expanded-Prostate Index Composite - 26 (EPIC 26). EPIC-26 evaluates patient's bowel (6 items). The 6 items are reported on a scale of 0 - 100. A higher score indicates better urinary function.
Sexual Function Median ScoreMeasured at cycles 1, 3, and 5.Sexual function measure through The Expanded-Prostate Index Composite - 26 (EPIC 26). EPIC-26 evaluates patient's sexual function (5 items). The 5 items are reported on a scale of 0 - 100.A higher score indicates better urinary function.
Hormone Function Median ScoreMeasured at cycles 1, 3, and 5.Hormone function evaluated by the Expanded-Prostate Index Composite - 26 (EPIC 26). EPIC-26 evaluates patient's hormonal function (5 items). The 5 items are reported on a scale of 0 - 100. A higher score indicates better urinary function.
Number of Participants With a Fatigue Score of 3 or 4Cycles 1, 3, and 5Feeling fatigue measure of the Patient-Reported Outcome Measurement Information System (PROMIS)-Fatigue Short Form is scored from 0-4 \[0=Not at all, 1=A little bit, 2=Somewhat, 3=Quite a bit, 4=Very much\]. The higher the score, the more fatigued the patient is.
Median Collagen Type 1 C-TelopeptideMeasured at baseline, end of treatment, and at 3 month follow-up, up to 40 weeksMedian Collagen Type 1 C-Telopeptide is a biomarker for bone metabolism measured and analyzed using established methods. Reference range for adult males is 60-1200 pg/mL
Median Bone-Specific Alkaline PhosphataseMeasured at baseline, end of treatment, and at 3 month follow-up, up to 40 weeksMedian Bone-Specific Alkaline Phosphatase is a biomarker for bone metabolism measured and analyzed using established methods. Reference range for adult males is 7.5-69.8 ug/L
Median Procollagen Type II Intact N Terminal PropeptideMeasured at baseline, end of treatment, and at 3 month follow-up, up to 40 weeksMedian Procollagen Type II Intact N Terminal Propeptide is a biomarker for bone metabolism measured and analyzed using established methods. Reference range for adult males is 22-87 ug/L
Median WeightAt baseline and end of treatment, up to 27 weeksMedian weight taken at baseline and end of treatment.

Countries

United States

Participant flow

Recruitment details

Enrollment from February 2014 to February 2017

Participants by arm

ArmCount
Enzalutamide With External Beam Radiation
Enzalutamide 40 mg orally 4x daily for 6 (28 day +/-3 days) cycles. External Beam Radiation Therapy (EBRT) - 7-10 weeks after beginning Enzalutamide 75.6 to 79.2 Gy in 1.8 Gy fractions for up to 11 weeks. \*Patients that are unable to complete enzalutamide therapy will still be treated with EBRT Enzalutamide External Beam Radiation
64
Total64

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyWithdrawal by Subject2

Baseline characteristics

CharacteristicEnzalutamide With External Beam Radiation
Age, Continuous70 years
Baseline Prostate Specific Antigen (PSA)7.72 ng/mL
Gleason Score
6
2 Participants
Gleason Score
7
62 Participants
M Stage
M0
50 Participants
M Stage
M1
0 Participants
M Stage
MX
9 Participants
M Stage
Unknown
5 Participants
N Stage
N0
50 Participants
N Stage
N1
0 Participants
N Stage
NX
12 Participants
N Stage
Unknown
2 Participants
Primary Gleason Score
3
38 Participants
Primary Gleason Score
4
26 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
5 Participants
Race (NIH/OMB)
More than one race
1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
8 Participants
Race (NIH/OMB)
White
50 Participants
Risk Stratification
Favorable
10 Participants
Risk Stratification
Unfavorable
54 Participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
64 Participants
T Stage
T1a
0 Participants
T Stage
T1b
0 Participants
T Stage
T1c
43 Participants
T Stage
T2a
18 Participants
T Stage
T2b
1 Participants
T Stage
T2c
2 Participants
T Stage
T3
0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 64
other
Total, other adverse events
64 / 64
serious
Total, serious adverse events
0 / 64

Outcome results

Primary

Percentage of Participants With PSA at or Below 0.2 ng/ml

Percentage of participants with PSA level of less than or equal to 0.2 ng/ml at the end of six cycles of enzalutamide and EBRT treatment. Post-treatment PSA nadir level has been shown to be a validated intermediate cancer endpoint in similar settings. The chosen cut-off of 0.2 ng/ml was informed by D'Amico et al Lancet Oncology 2012. PSA levels determined through established methods (blood draw and serum analysis).

Time frame: End of treatment, up to 27 weeks.

Population: Participants who completed treatment are included in this measure.

ArmMeasureGroupValue (NUMBER)
Enzalutamide With External Beam RadiationPercentage of Participants With PSA at or Below 0.2 ng/ml<=0.2 ng/ml79 percentage of participants
Enzalutamide With External Beam RadiationPercentage of Participants With PSA at or Below 0.2 ng/ml>0.2 ng/ml21 percentage of participants
Secondary

Bowel Function Median Score

Bowel function measure through the Expanded-Prostate Index Composite - 26 (EPIC 26). EPIC-26 evaluates patient's bowel (6 items). The 6 items are reported on a scale of 0 - 100. A higher score indicates better urinary function.

Time frame: Measured at cycles 1, 3, and 5.

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationBowel Function Median ScoreCycle 1100 score
Enzalutamide With External Beam RadiationBowel Function Median ScoreCycle 397.92 score
Enzalutamide With External Beam RadiationBowel Function Median ScoreCycle 589.58 score
Secondary

Hormone Function Median Score

Hormone function evaluated by the Expanded-Prostate Index Composite - 26 (EPIC 26). EPIC-26 evaluates patient's hormonal function (5 items). The 5 items are reported on a scale of 0 - 100. A higher score indicates better urinary function.

Time frame: Measured at cycles 1, 3, and 5.

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationHormone Function Median ScoreCycle 197.50 score
Enzalutamide With External Beam RadiationHormone Function Median ScoreCycle 390 score
Enzalutamide With External Beam RadiationHormone Function Median ScoreCycle 575 score
Secondary

Median Androstenedione

Median androstenedione, collected and assessed using established methods. Reference range is 40-150 ng/dL for adult males.

Time frame: Assessed cycle 1, cycle 5, and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian AndrostenedioneCycle 156.5 ng/dL
Enzalutamide With External Beam RadiationMedian AndrostenedioneCycle 577.5 ng/dL
Enzalutamide With External Beam RadiationMedian AndrostenedioneEnd of treatment76.5 ng/dL
Secondary

Median Bicep Fat Fold Measurement

Median bicep fat fold measurement taken at baseline and end of treatment.

Time frame: At baseline and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all patients who completed treatment with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian Bicep Fat Fold MeasurementBaseline14 mm
Enzalutamide With External Beam RadiationMedian Bicep Fat Fold MeasurementEnd of treatment18 mm
Secondary

Median Bone-Specific Alkaline Phosphatase

Median Bone-Specific Alkaline Phosphatase is a biomarker for bone metabolism measured and analyzed using established methods. Reference range for adult males is 7.5-69.8 ug/L

Time frame: Measured at baseline, end of treatment, and at 3 month follow-up, up to 40 weeks

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian Bone-Specific Alkaline PhosphataseBaseline11.5 ug/L
Enzalutamide With External Beam RadiationMedian Bone-Specific Alkaline PhosphataseOff-Treatment12 ug/L
Enzalutamide With External Beam RadiationMedian Bone-Specific Alkaline Phosphatase3 Month Follow-up12.6 ug/L
Secondary

Median Collagen Type 1 C-Telopeptide

Median Collagen Type 1 C-Telopeptide is a biomarker for bone metabolism measured and analyzed using established methods. Reference range for adult males is 60-1200 pg/mL

Time frame: Measured at baseline, end of treatment, and at 3 month follow-up, up to 40 weeks

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian Collagen Type 1 C-TelopeptideBaseline295.5 pg/mL
Enzalutamide With External Beam RadiationMedian Collagen Type 1 C-TelopeptideOff-Treatment397 pg/mL
Enzalutamide With External Beam RadiationMedian Collagen Type 1 C-Telopeptide3 Month Follow-up314 pg/mL
Secondary

Median DHEA-S

Median DHEA-S, collected and assessed using established methods. Reference range is 28-640 ug/dL for adult males.

Time frame: Assessed cycle 1, cycle 5, and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian DHEA-SCycle 198 ug/dL
Enzalutamide With External Beam RadiationMedian DHEA-SCycle 5141 ug/dL
Enzalutamide With External Beam RadiationMedian DHEA-SEnd of treatment135 ug/dL
Secondary

Median Estradiol

Median estradiol, collected and assessed using established methods. The reference range is 13-42 pg/mL for adult males.

Time frame: Assessed cycle 1, cycle 5, and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian EstradiolCycle 122.5 pg/mL
Enzalutamide With External Beam RadiationMedian EstradiolCycle 545 pg/mL
Enzalutamide With External Beam RadiationMedian EstradiolEnd of treatment45 pg/mL
Secondary

Median Estrone

Median estrone, collected and assessed using established methods. Reference range is 12-72 pg/mL for adult males.

Time frame: Assessed cycle 1, cycle 5, and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian EstroneCycle 137 pg/mL
Enzalutamide With External Beam RadiationMedian EstroneCycle 540 pg/mL
Enzalutamide With External Beam RadiationMedian EstroneEnd of treatment39 pg/mL
Secondary

Median Free Testosterone

Median free testosterone, collected and assessed using established methods. Reference range is 350-1200 ng/dL for adult males.

Time frame: Assessed cycle 1, cycle 5, and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian Free TestosteroneCycle 166 pg/mL
Enzalutamide With External Beam RadiationMedian Free TestosteroneCycle 5100 pg/mL
Enzalutamide With External Beam RadiationMedian Free TestosteroneEnd of treatment86 pg/mL
Secondary

Median Procollagen Type II Intact N Terminal Propeptide

Median Procollagen Type II Intact N Terminal Propeptide is a biomarker for bone metabolism measured and analyzed using established methods. Reference range for adult males is 22-87 ug/L

Time frame: Measured at baseline, end of treatment, and at 3 month follow-up, up to 40 weeks

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian Procollagen Type II Intact N Terminal PropeptideBaseline12.8 ug/L
Enzalutamide With External Beam RadiationMedian Procollagen Type II Intact N Terminal PropeptideOff-Treatment13.5 ug/L
Enzalutamide With External Beam RadiationMedian Procollagen Type II Intact N Terminal Propeptide3 Month Follow-up13.4 ug/L
Secondary

Median Shoulder Blade Fat Fold Measurement

Median shoulder blade fat fold measurement taken at baseline and end of treatment.

Time frame: At baseline and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all patients who completed treatment with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian Shoulder Blade Fat Fold MeasurementBaseline20 mm
Enzalutamide With External Beam RadiationMedian Shoulder Blade Fat Fold MeasurementEnd of treatment22 mm
Secondary

Median Testosterone

Median testosterone, collected and assessed using established methods. Reference range is 300-1050 ng/dL for adult males.

Time frame: Assessed cycle 1, cycle 5, and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian TestosteroneCycle 1349.5 ng/dL
Enzalutamide With External Beam RadiationMedian TestosteroneCycle 5760 ng/dL
Enzalutamide With External Beam RadiationMedian TestosteroneEnd of treatment730.5 ng/dL
Secondary

Median Tricep Fat Fold Measurement

Median tricep fat fold measurement taken at baseline and end of treatment.

Time frame: At baseline and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all patients who completed treatment with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian Tricep Fat Fold MeasurementBaseline20 mm
Enzalutamide With External Beam RadiationMedian Tricep Fat Fold MeasurementEnd of treatment24 mm
Secondary

Median Waist Circumference

Median waist circumference taken at baseline and end of treatment.

Time frame: At baseline and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all patients who completed treatment with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian Waist CircumferenceBaseline104.6 mm
Enzalutamide With External Beam RadiationMedian Waist CircumferenceEnd of treatment104.6 mm
Secondary

Median Waist Fat Fold Measurement

Median waist fat fold measurement taken at baseline and end of treatment.

Time frame: At baseline and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all patients who completed treatment with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian Waist Fat Fold MeasurementBaseline28 mm
Enzalutamide With External Beam RadiationMedian Waist Fat Fold MeasurementEnd of treatment28 mm
Secondary

Median Weight

Median weight taken at baseline and end of treatment.

Time frame: At baseline and end of treatment, up to 27 weeks

Population: The analysis population is comprised of all patients who completed treatment with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationMedian WeightBaseline87.35 kg
Enzalutamide With External Beam RadiationMedian WeightEnd of treatment88.26 kg
Secondary

Number of Participants With a Fatigue Score of 3 or 4

Feeling fatigue measure of the Patient-Reported Outcome Measurement Information System (PROMIS)-Fatigue Short Form is scored from 0-4 \[0=Not at all, 1=A little bit, 2=Somewhat, 3=Quite a bit, 4=Very much\]. The higher the score, the more fatigued the patient is.

Time frame: Cycles 1, 3, and 5

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Enzalutamide With External Beam RadiationNumber of Participants With a Fatigue Score of 3 or 4Cycle 12 Participants
Enzalutamide With External Beam RadiationNumber of Participants With a Fatigue Score of 3 or 4Cycle 313 Participants
Enzalutamide With External Beam RadiationNumber of Participants With a Fatigue Score of 3 or 4Cycle 513 Participants
Secondary

Number of Participants With a Sleep Quality Score of 0 or 1

Sleep quality measure of the Pittsburgh Sleep Quality Index (PSQI) is scored from 0-3 \[0=Very bad, 1=Fairly bad, 2=Fairly good, 3=Very good\]. The higher the score, the better the sleep quality.

Time frame: Measured at cycles 1, 3, and 5.

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Enzalutamide With External Beam RadiationNumber of Participants With a Sleep Quality Score of 0 or 1Cycle 154 Participants
Enzalutamide With External Beam RadiationNumber of Participants With a Sleep Quality Score of 0 or 1Cycle 343 Participants
Enzalutamide With External Beam RadiationNumber of Participants With a Sleep Quality Score of 0 or 1Cycle 545 Participants
Secondary

Sexual Function Median Score

Sexual function measure through The Expanded-Prostate Index Composite - 26 (EPIC 26). EPIC-26 evaluates patient's sexual function (5 items). The 5 items are reported on a scale of 0 - 100.A higher score indicates better urinary function.

Time frame: Measured at cycles 1, 3, and 5.

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationSexual Function Median ScoreCycle 162.5 score
Enzalutamide With External Beam RadiationSexual Function Median ScoreCycle 332 score
Enzalutamide With External Beam RadiationSexual Function Median ScoreCycle 519.42 score
Secondary

Urinary Incontinence Median Score

Urinary incontinence evaluated using the Expanded-Prostate Index Composite - 26 (EPIC 26) EPIC-26 evaluates patient's urinary incontinence (4 items). The 4 items are reported on a scale of 0 - 100. A higher score indicates better urinary function.

Time frame: Measured at cycles 1, 3, and 5.

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationUrinary Incontinence Median ScoreCycle 1100 score
Enzalutamide With External Beam RadiationUrinary Incontinence Median ScoreCycle 3100 score
Enzalutamide With External Beam RadiationUrinary Incontinence Median ScoreCycle 584.38 score
Secondary

Urinary Irritation Median Score

Urinary irritation evaluated using the Expanded-Prostate Index Composite - 26 (EPIC 26). EPIC-26 evaluates urinary irritation/obstruction (4 items). The final score from the 4 items is reported on a scale of 0 - 100. A higher score indicates better urinary function.

Time frame: Measured at cycles 1, 3, and 5.

Population: The analysis population is comprised of all enrolled patients with evaluable data for this endpoint at each respective timepoint. As treatment went on, some patients dropped out and/or missed appointments and, as such, data was not collected on these patients.

ArmMeasureGroupValue (MEDIAN)
Enzalutamide With External Beam RadiationUrinary Irritation Median ScoreCycle 187.50 score
Enzalutamide With External Beam RadiationUrinary Irritation Median ScoreCycle 381.25 score
Enzalutamide With External Beam RadiationUrinary Irritation Median ScoreCycle 562.5 score

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026