Trial Outcomes & Findings for RElugolix VErsus LeUprolide Cardiac Trial (NCT NCT05320406)

NCT ID: NCT05320406

Last Updated: 2025-10-06

Results Overview

Using cardiac computed tomography angiography (CCTA), total coronary plaque volume will be determined using an artificial intelligence-enabled quantitative coronary plaque analysis (AI-QCPA) through a commercially available and validated software service (HeartFlow, Inc). Each coronary artery (right coronary, left main, left anterior descending, and left circumflex) will be scored, and plaque volumes were summed over all segments.

Recruitment status

ACTIVE_NOT_RECRUITING

Study phase

PHASE2

Target enrollment

94 participants

Primary outcome timeframe

From baseline to 12 months post-treatment initiation

Results posted on

2025-10-06

Participant Flow

Participant milestones

Participant milestones
Measure
Arm I (Radiation Therapy Alone)
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Overall Study
STARTED
29
34
31
Overall Study
COMPLETED
28
28
29
Overall Study
NOT COMPLETED
1
6
2

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

RElugolix VErsus LeUprolide Cardiac Trial

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Arm I (Radiation Therapy Alone)
n=29 Participants
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
n=34 Participants
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Total
n=94 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Age, Categorical
Between 18 and 65 years
10 Participants
n=5 Participants
10 Participants
n=7 Participants
7 Participants
n=5 Participants
27 Participants
n=4 Participants
Age, Categorical
>=65 years
19 Participants
n=5 Participants
24 Participants
n=7 Participants
24 Participants
n=5 Participants
67 Participants
n=4 Participants
Age, Continuous
65.79 Years
STANDARD_DEVIATION 6.75 • n=5 Participants
68.85 Years
STANDARD_DEVIATION 8.12 • n=7 Participants
68.81 Years
STANDARD_DEVIATION 8.83 • n=5 Participants
67.89 Years
STANDARD_DEVIATION 8.02 • n=4 Participants
Sex: Female, Male
Female
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Sex: Female, Male
Male
29 Participants
n=5 Participants
34 Participants
n=7 Participants
31 Participants
n=5 Participants
94 Participants
n=4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
Race (NIH/OMB)
Asian
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
Race (NIH/OMB)
Black or African American
6 Participants
n=5 Participants
11 Participants
n=7 Participants
7 Participants
n=5 Participants
24 Participants
n=4 Participants
Race (NIH/OMB)
White
22 Participants
n=5 Participants
19 Participants
n=7 Participants
21 Participants
n=5 Participants
62 Participants
n=4 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=5 Participants
1 Participants
n=7 Participants
0 Participants
n=5 Participants
1 Participants
n=4 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants
n=5 Participants
2 Participants
n=7 Participants
3 Participants
n=5 Participants
6 Participants
n=4 Participants
Region of Enrollment
United States
29 participants
n=5 Participants
34 participants
n=7 Participants
31 participants
n=5 Participants
94 participants
n=4 Participants

PRIMARY outcome

Timeframe: From baseline to 12 months post-treatment initiation

Using cardiac computed tomography angiography (CCTA), total coronary plaque volume will be determined using an artificial intelligence-enabled quantitative coronary plaque analysis (AI-QCPA) through a commercially available and validated software service (HeartFlow, Inc). Each coronary artery (right coronary, left main, left anterior descending, and left circumflex) will be scored, and plaque volumes were summed over all segments.

Outcome measures

Outcome measures
Measure
Arm I (Radiation Therapy Alone)
n=28 Participants
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Total Coronary Plaque Volume in Major Coronary Arteries (i.e. Left Anterior Descending, Left Circumflex, Right Major Coronary Arteries)
Baseline
103.0 mm3
Interval 79.0 to 182.0
204.0 mm3
Interval 73.0 to 556.5
272.0 mm3
Interval 65.0 to 766.0
Total Coronary Plaque Volume in Major Coronary Arteries (i.e. Left Anterior Descending, Left Circumflex, Right Major Coronary Arteries)
Month 12
130.0 mm3
Interval 55.0 to 265.0
290.0 mm3
Interval 153.0 to 655.5
265.0 mm3
Interval 100.0 to 807.0

SECONDARY outcome

Timeframe: From baseline to 12 months post-treatment initiation

Using cardiac computed tomography angiography (CCTA), total coronary plaque volume will be determined using an artificial intelligence-enabled quantitative coronary plaque analysis (AI-QCPA) through a commercially available and validated software service (HeartFlow, Inc). Each coronary artery (right coronary, left main, left anterior descending, and left circumflex) will be scored, and plaque volumes were summed over all segments.

Outcome measures

Outcome measures
Measure
Arm I (Radiation Therapy Alone)
n=28 Participants
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Non-calcified Coronary Plaque Volume in Major Coronary Arteries (i.e. Left Anterior Descending, Left Circumflex, Right Major Coronary Arteries)
Baseline
98.0 mm3
Interval 74.0 to 167.0
157.0 mm3
Interval 65.5 to 464.5
206.0 mm3
Interval 56.0 to 620.0
Non-calcified Coronary Plaque Volume in Major Coronary Arteries (i.e. Left Anterior Descending, Left Circumflex, Right Major Coronary Arteries)
Month 12
112.0 mm3
Interval 42.0 to 215.0
252.0 mm3
Interval 133.0 to 511.0
236.0 mm3
Interval 92.0 to 613.0

OTHER_PRE_SPECIFIED outcome

Timeframe: From baseline to 12 months post-treatment initiation

Using cardiac computed tomography angiography (CCTA), total coronary plaque volume will be determined using an artificial intelligence-enabled quantitative coronary plaque analysis (AI-QCPA) through a commercially available and validated software service (HeartFlow, Inc). Each coronary artery (right coronary, left main, left anterior descending, and left circumflex) will be scored, and plaque volumes were summed over all segments.

Outcome measures

Outcome measures
Measure
Arm I (Radiation Therapy Alone)
n=28 Participants
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Calcified and Low-attenuation Coronary Plaque Volume in Major Coronary Arteries (i.e. Left Anterior Descending, Left Circumflex, Right Major Coronary Arteries)
Baseline
11.5 mm3
Interval 2.3 to 25.8
34.0 mm3
Interval 5.8 to 98.8
41.0 mm3
Interval 9.0 to 175.0
Calcified and Low-attenuation Coronary Plaque Volume in Major Coronary Arteries (i.e. Left Anterior Descending, Left Circumflex, Right Major Coronary Arteries)
Month 12
13.0 mm3
Interval 4.0 to 38.8
44.0 mm3
Interval 12.3 to 109.0
46.0 mm3
Interval 16.0 to 185.0

OTHER_PRE_SPECIFIED outcome

Timeframe: From baseline to 12 months post-treatment initiation

The CACS will be measured by the Agatston score (range 0-400, with higher scores indicating more coronary artery calcium) on precontrast cardiac computed tomography anigiography (CCTA) scans by two blinded, board-certified cardiologists.

Outcome measures

Outcome measures
Measure
Arm I (Radiation Therapy Alone)
n=28 Participants
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Coronary Artery Calcium Score (CACS)
Baseline
24.9 Agatston score (range 0-400)
Interval 5.3 to 91.3
106.6 Agatston score (range 0-400)
Interval 4.5 to 249.6
96.0 Agatston score (range 0-400)
Interval 14.0 to 390.1
Coronary Artery Calcium Score (CACS)
Month 12
36.0 Agatston score (range 0-400)
Interval 6.8 to 101.8
102.7 Agatston score (range 0-400)
Interval 19.9 to 262.5
109.8 Agatston score (range 0-400)
Interval 31.8 to 509.3

OTHER_PRE_SPECIFIED outcome

Timeframe: From baseline to 12 months post-treatment initiation

Coronary computed tomographic angiography post-contrast images were used for vessel stenosis, using an artificial intelligence-informed coronary stenosis quantification tool (AI-CSQ, Roadmap Analysis, Heart flow, Mountain View CA). Stenoses regions are defined in ranges of 0-29%, 30-49%, 50-69%, and \>70%. The number of participants within each treatment meeting these stenosis thresholds were quantified at baseline and month 12.

Outcome measures

Outcome measures
Measure
Arm I (Radiation Therapy Alone)
n=28 Participants
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Number of Participants With <30%, 30-49%, 50-69%, and >70% Maximum Coronary Vessel Stenosis at Baseline and Month 12
Baseline · <30%
5 Participants
3 Participants
4 Participants
Number of Participants With <30%, 30-49%, 50-69%, and >70% Maximum Coronary Vessel Stenosis at Baseline and Month 12
Baseline · 30% - 49%
12 Participants
9 Participants
8 Participants
Number of Participants With <30%, 30-49%, 50-69%, and >70% Maximum Coronary Vessel Stenosis at Baseline and Month 12
Baseline · 50% - 69%
9 Participants
15 Participants
16 Participants
Number of Participants With <30%, 30-49%, 50-69%, and >70% Maximum Coronary Vessel Stenosis at Baseline and Month 12
Baseline · 70% - 99%
2 Participants
4 Participants
3 Participants
Number of Participants With <30%, 30-49%, 50-69%, and >70% Maximum Coronary Vessel Stenosis at Baseline and Month 12
Month 12 · <30%
6 Participants
2 Participants
6 Participants
Number of Participants With <30%, 30-49%, 50-69%, and >70% Maximum Coronary Vessel Stenosis at Baseline and Month 12
Month 12 · 30% - 49%
10 Participants
8 Participants
6 Participants
Number of Participants With <30%, 30-49%, 50-69%, and >70% Maximum Coronary Vessel Stenosis at Baseline and Month 12
Month 12 · 50% - 69%
10 Participants
17 Participants
15 Participants
Number of Participants With <30%, 30-49%, 50-69%, and >70% Maximum Coronary Vessel Stenosis at Baseline and Month 12
Month 12 · 70% - 99%
2 Participants
4 Participants
4 Participants

OTHER_PRE_SPECIFIED outcome

Timeframe: From baseline to at least 2 years post-treatment initiation

Incidence of myocardial infarction, need for coronary revascularization, and/or sudden cardiac death will be measured for up to 2 years following enrollment.

Outcome measures

Outcome measures
Measure
Arm I (Radiation Therapy Alone)
n=28 Participants
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Major Adverse Cardiovascular Events
1 Participants
3 Participants
0 Participants

OTHER_PRE_SPECIFIED outcome

Timeframe: Baseline and month 0, 3, 6, 12

Change in total testosterone levels (ng/dL) will be measured at baseline and month 0, 3, 6, and 12 between treatment arms. Testosterone change over time will be summarized and plotted over time for each treatment arm.

Outcome measures

Outcome measures
Measure
Arm I (Radiation Therapy Alone)
n=28 Participants
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
n=31 Participants
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Testosterone Kinetics
0
254.433 ng/mL
Standard Error 16.365
292.735 ng/mL
Standard Error 15.114
254.548 ng/mL
Standard Error 15.828
Testosterone Kinetics
3
266.358 ng/mL
Standard Error 16.633
37.483 ng/mL
Standard Error 10.254
26.468 ng/mL
Standard Error 7.325
Testosterone Kinetics
6
260.606 ng/mL
Standard Error 17.815
31.063 ng/mL
Standard Error 8.018
25.538 ng/mL
Standard Error 5.325
Testosterone Kinetics
12
253.631 ng/mL
Standard Error 18.149
142.007 ng/mL
Standard Error 18.503
199.673 ng/mL
Standard Error 16.573

Adverse Events

Arm I (Radiation Therapy Alone)

Serious events: 0 serious events
Other events: 23 other events
Deaths: 0 deaths

Arm II (Radiation Therapy Plus Leuprolide)

Serious events: 1 serious events
Other events: 27 other events
Deaths: 1 deaths

Arm III (Radiation Therapy Plus Relugolix)

Serious events: 0 serious events
Other events: 30 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Arm I (Radiation Therapy Alone)
n=28 participants at risk
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
n=31 participants at risk
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
n=31 participants at risk
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Infections and infestations
sepsis
0.00%
0/28 • 12 months
3.2%
1/31 • Number of events 1 • 12 months
0.00%
0/31 • 12 months

Other adverse events

Other adverse events
Measure
Arm I (Radiation Therapy Alone)
n=28 participants at risk
Patients undergo definitive radiation therapy alone (IMRT, SBRT, proton therapy, brachytherapy) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy
Arm II (Radiation Therapy Plus Leuprolide)
n=31 participants at risk
Patients undergo radiation therapy as in Arm I and receive leuprolide SC or IM every 3 or 6 months. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Leuprolide: Given IM or SC
Arm III (Radiation Therapy Plus Relugolix)
n=31 participants at risk
Patients undergo radiation therapy as in Arm I and receive relugolix PO QD. Treatment continues for 6 to 12 months (depending on risk) in the absence of disease progression or unacceptable toxicity. Radiation therapy: Undergo radiation therapy Relugolix: Given PO
Renal and urinary disorders
Cystitis noninfective
21.4%
6/28 • Number of events 6 • 12 months
41.9%
13/31 • Number of events 16 • 12 months
38.7%
12/31 • Number of events 14 • 12 months
Gastrointestinal disorders
Diarrhea
3.6%
1/28 • Number of events 1 • 12 months
32.3%
10/31 • Number of events 14 • 12 months
45.2%
14/31 • Number of events 24 • 12 months
General disorders
Fatigue
32.1%
9/28 • Number of events 13 • 12 months
71.0%
22/31 • Number of events 33 • 12 months
83.9%
26/31 • Number of events 29 • 12 months
Vascular disorders
Hot flashes
0.00%
0/28 • 12 months
58.1%
18/31 • Number of events 27 • 12 months
64.5%
20/31 • Number of events 24 • 12 months
Renal and urinary disorders
Urinary frequency
42.9%
12/28 • Number of events 14 • 12 months
71.0%
22/31 • Number of events 24 • 12 months
77.4%
24/31 • Number of events 29 • 12 months
Renal and urinary disorders
Urinary retention
32.1%
9/28 • Number of events 11 • 12 months
45.2%
14/31 • Number of events 19 • 12 months
19.4%
6/31 • Number of events 6 • 12 months
Renal and urinary disorders
Urinary urgency
35.7%
10/28 • Number of events 11 • 12 months
48.4%
15/31 • Number of events 19 • 12 months
61.3%
19/31 • Number of events 20 • 12 months

Additional Information

Dr. Sagar Patel

Emory University

Phone: 404-778-1900

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place