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Relugolix

Phase 3

Uterine Fibroids | Small molecule | Endocrine |Takeda Pharmaceutical Company Limited|Trials Updated: Mar 22, 2019

Relugolix development status

Highest phase Phase 3
Registered trials 26 across 12 sponsors since Oct 2011

Relugolix target and mechanism

Molecular targetGNRHR
Target classAntagonist
ModalitySmall molecule

Also known as TAK-385

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials7
Total Enrollment1,592

FDA Designations

No designations recorded

Relugolix clinical trials

Relugolix · 7 trials · 4 indications

Phase 3 2Phase 2 4Phase 1 1
NCT02655224A Placebo-Controlled, Phase 3 Study of Relugolix (TAK-385) 40 mg in the Treatment of Pain Symptoms Associated With Uterine FibroidsUterine Fibroids
COMPLETED65 Analytics
NCT02655237A Phase 3 Study to Evaluate the Efficacy and Safety of Relugolix (TAK-385) 40 mg Compared With Leuprorelin in the Treatment of Uterine FibroidsUterine Fibroids
COMPLETED281 Analytics
PHASE3COMPLETED
A Placebo-Controlled, Phase 3 Study of Relugolix (TAK-385) 40 mg in the Treatment of Pain Symptoms Associated With Uterine Fibroids
Uterine FibroidsUnlock trial analytics
PHASE3COMPLETED
A Phase 3 Study to Evaluate the Efficacy and Safety of Relugolix (TAK-385) 40 mg Compared With Leuprorelin in the Treatment of Uterine Fibroids
Uterine FibroidsUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants With a Maximum NRS Score of 1 or Less During the 28 Days Before the Final Dose of Study Drug
For 28 days before the final dose of study drug (up to Week 12)

Pain symptoms were evaluated using the NRS score. NRS score is a self-reported instrument assessing pain from 0 to 10. Higher scores reflect greater level of pain. The percentage of participants with a score of 1 or less is reported.

Percentage of Participants With Total PBAC Score of <10 From Week 6 to 12
Week 6 to 12

PBAC score was used to measure volume of menstrual blood loss. Participants used sanitary products designated by sponsor and recorded the numbers of tampons or towels used, clots and flooding in patient diary. Three diagrams used which represented a lightly, moderately stained or completely saturated pad/tampon. Following scores assigned: 1) 1, 5, or 20 points for each pad; 2) 1, 5, or 10 points for each tampon; 3) 1 or 5 points for each blood clot of \<1 cm/=1 cm/\>1 in longest diameter; 4) 5 points for each episode of flooding. The total PBAC score (sum of points) ranges from 0 to \>500.

Percentage of Participants With Effective Castration Rate Over 25 Weeks
Day 1 Week 5 up to Day 1 Week 25

Castration rate is defined as the observed percentage of participants who have testosterone concentrations less than (\<) 50 nanogram per deciliter (ng/dL) (1.73 nanomole per liter \[nmol/L\]) at all scheduled visits.

Bone Mineral Density
Up to Week 24.

Measured by Dual-energy X-ray absorptiometry (DXA)

Treatment-emergent Adverse Events
Up to Week 16

Treatment-emergent adverse events are defined as any unfavorable and unintended sign, symptom or disease temporally associated with the use of a medicinal product reported from first dose of study drug through the last visit (Week 16)

Vital Signs
Up to Week 24

Vital signs will include body temperature, sitting blood pressure and pulse (bpm).

Body Weight
Up to Week 24
Electrocardiograms
Up to Week 24.
Laboratory Values
Up to Week 24
Serum NTx
Up to Week 24

NTx is one of the biochemical bone metabolism markers

Serum BAP
Up to Week 24

BAP is one of the biochemical bone metabolism markers

Decrease in menstrual blood loss
Week 12 (one menstrual cycle)

Blood loss will be assessed using the Pictorial Blood Loss Assessment Chart (PBAC).

Score for pelvic pain as measured by the Visual Analogue Scale (VAS)
Week 12 (one menstrual cycle)

Pelvic pain will be assessed using the VAS as pain evaluation scale.

Part A: Number of Participants With Dose-limiting Toxicities (DLTs)
From treatment initiation until Day 28

DLTs were defined as treatment-related adverse events (AEs) that occurred within the first 28 days of treatment as per common terminology criteria for adverse events (CTCAE) version 4.03: any grade 3 or higher toxicity; QT/Fridericia corrected QT (QTcF) greater than (\>) 500 millisecond (msec) after treatment initiation; QT/QTcF interval prolongation \>60 msec postdose.

Part A: Number of Participants Reporting One or More Treatment-emergent Adverse Event (TEAE)
From treatment initiation until 40 days after last dose of study drug (Day 68)
Part A: Number of Participants With Grade 2 or Higher Laboratory Test Abnormalities
From treatment initiation until 40 days after last dose of study drug (Day 68)

Laboratory test abnormalities were graded using the CTCAE. The grades were: Grade 2- (moderate) minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental activity of daily living (ADL); Grade 3- (severe) medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limited self-care ADL. Data has been presented for any Grade 2 or higher event in the laboratory test abnormalities.

Part A: Number of Participants With Markedly Abnormal Values of Vital Signs Parameters
From treatment initiation until 40 days after last dose of study drug (Day 68)
Part A: Number of Participants With Markedly Abnormal Values of Electrocardiogram (ECG) Parameters
From treatment initiation until 40 days after last dose of study drug (Day 68)
Part B: Number of Participants Reporting One or More TEAE
From treatment initiation until 40 days after last dose of study drug (Day 712)
Part B: Number of Participants With Grade 2 or Higher Laboratory Test Abnormalities
From treatment initiation until 40 days after last dose of study drug (Day 712)

Laboratory test abnormalities were graded using the CTCAE. The grades were: Grade 2- (moderate) minimal, local or noninvasive intervention indicated; limiting age-appropriate instrumental ADL; Grade 3- (severe) medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limited self-care ADL. Data has been presented for any Grade 2 or higher event in the laboratory test abnormalities. Here aspartate aminotransferase (AST) (glutamic-oxaloacetic transaminase \[GOT\]) High, creatine kinase (CK) (creatine phosphokinase \[CPK\]) High, prothrombin time (PT)-international normalized ratio (INR) High.

Part B: Number of Participants With Markedly Abnormal Values of Vital Signs Parameters
From treatment initiation until 40 days after last dose of study drug (Day 712)

Here "BP" is blood pressure.

Part B: Number of Participants With Markedly Abnormal Values of ECG Parameters
From treatment initiation until 40 days after last dose of study drug (Day 712)

Secondary Endpoints

Percentage of Participants With a Maximum NRS Score of 0 During the 28 Days Before the Final Dose of Study Drug
For 28 days before the final dose of study drug (up to Week 12)
Mean NRS Score During the 28 Days Before the Final Dose of Study Drug
For 28 days before the final dose of study drug (up to Week 12)
Percentage of Days Without Pain Symptoms (NRS = 0) During the 28 Days Before the Final Dose of Study Drug
For 28 days before the final dose of study drug (up to Week 12)
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Relugolix 40 mgEXPERIMENTALRelugolix placebo-matching tablet, orally, once daily before breakfast for 3 to 6 weeks in the run-in period, followed by relugolix 40 mg, tablet, orally once daily before breakfast for 12 weeks.
PlaceboPLACEBO_COMPARATORRelugolix placebo-matching tablet, orally, once daily before breakfast for 3 to 6 weeks in the run-in period, followed by relugolix placebo-matching tablet, orally once daily before breakfast for 12 weeks.
Leuprorelin 1.88 mg or 3.75 mgACTIVE_COMPARATORRelugolix placebo matching tablets, orally, once daily along with leuprorelin acetate placebo matching injection, SC, once in 4 weeks for 3 to 6 weeks in run-in period followed by leuprorelin acetate 1.88 mg or 3.75 mg, injection, SC, once in 4 weeks and relugolix placebo matching tablets, orally, once daily for 24 weeks in treatment period.
TAK-385EXPERIMENTALTAK-385 320 mg, tablets, orally, once, on Day 1, followed by TAK-385 120 mg, orally, once daily for 24 weeks. Each participant may have one upward dose adjustment of 40 mg for efficacy and/or one downward dose adjustment of 40 mg for safety during the study.
DegarelixACTIVE_COMPARATORDegarelix 240 mg, injection, subcutaneous, on Day 1, followed by degarelix 80 mg, injection, subcutaneous, once every four weeks, for 24 weeks.
TAK-385 10 mg QDEXPERIMENTAL -
TAK-385 20 mg QDEXPERIMENTAL -
TAK-385 40 mg QDEXPERIMENTAL -
LeuplinOTHER -
Part A Cohort 1: TAK-385 320 mg + TAK-385 80 mgEXPERIMENTALTAK-385 320 mg loading dose, tablet, orally, once on Day 1, followed by TAK-385 80 mg maintenance dose, tablet, orally, once daily through Days 2 to 28.
Part A Cohort 2: TAK-385 320 mg + TAK-385 120 mgEXPERIMENTALTAK-385 320 mg loading dose, tablet, orally, once on Day 1, followed by TAK-385 120 mg maintenance dose, tablet, orally, once daily through Days 2 to 28.
Part A Cohort 3: TAK-385 320 mg + TAK-385 160 mgEXPERIMENTALTAK-385 320 mg loading dose, tablet, orally, once on Day 1, followed by TAK-385 160 mg maintenance dose, tablet, orally, once daily through Days 2 to 28.
Part A Cohort 4: TAK-385 360 mg + TAK-385 120 mgEXPERIMENTALTAK-385 360 mg loading dose, tablet, orally, once on Day 1, followed by TAK-385 120 mg maintenance dose, tablet, orally, once daily through Days 2 to 28.
Part B Cohort 1: TAK-385 320 mg + TAK-385 80 mgEXPERIMENTALTAK-385 320 mg loading dose, tablet, orally, once on Day 1, followed by TAK-385 80 mg maintenance dose, tablet, orally, once daily through Days 2 to 672.
Part B Cohort 2: TAK-385 320 mg + TAK-385 120 mgEXPERIMENTALTAK-385 320 mg loading dose, tablet, orally, once on Day 1, followed by TAK-385 120 mg maintenance dose, tablet, orally, once daily through Days 2 to 672.

Interventions

NameTypeDescription
RelugolixDRUGRelugolix Tablets
Relugolix placeboDRUGRelugolix placebo-matching tablets
LeuprorelinDRUGLeuprorelin injection
Leuprorelin PlaceboDRUGLeuprorelin placebo-matching injections
TAK-385DRUGTAK-385 tablet
DegarelixDRUGDegarelix injection
PlaceboDRUGTAK-385 placebo-matching tablets, orally, once daily and leuprorelin acetate placebo injection, subcutaneously, once every 4 weeks for up to 12 weeks.
Leuprorelin acetateDRUGTAK-385 placebo-matching tablets, orally, once daily and leuprorelin acetate 3.75 mg injection, subcutaneously, once every 4 weeks for up to 12 weeks
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Eligibility Criteria

Age Range20 Years to N/A
SexFEMALE
Healthy VolunteersNo
Study Sites11

Inclusion Criteria: Inclusion Criteria for Entering the Screening Period (at VISIT 1) 1. In the opinion of the investigator or subinvestigator, the participant is capable of understanding and complying with protocol requirements. 2. The participant signs and dates a written, informed consent form ...

Countries:JapanUnited StatesUnited Kingdom
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Frequently asked questions about Relugolix

What is Relugolix used for in uterine fibroids?

Relugolix is an investigational oral small molecule being studied for the treatment of uterine fibroids. Phase 3 trials have evaluated it in women with uterine fibroids, including a study of pain symptoms associated with the condition. It is not yet approved for this indication based on the development data available.

What does Relugolix target?

Relugolix targets GNRHR, the gonadotropin-releasing hormone receptor, and acts as an antagonist. By binding this receptor, it blocks gonadotropin-releasing hormone signaling. This mechanism underlies its evaluation in endocrine conditions such as uterine fibroids.

Who is developing Relugolix?

Relugolix is being developed by Takeda Pharmaceutical Company Limited, which trades under the ticker TAK. The company is the sponsor behind the Phase 3 clinical program evaluating the drug in uterine fibroids.

What phase is Relugolix in?

Relugolix is in Phase 3 development for uterine fibroids. Two Phase 3 trials have been completed, and no active trials are currently listed. The drug remains investigational for this indication and has not been approved for uterine fibroids.

What clinical trials is Relugolix in?

Relugolix has been studied in two completed Phase 3 trials in uterine fibroids. NCT02655237 compared Relugolix 40 mg with leuprorelin in 281 patients in Japan. NCT02655224 was a placebo-controlled Phase 3 study of Relugolix 40 mg for pain symptoms associated with uterine fibroids, enrolling 65 patients in Japan.

Is Relugolix the same as TAK-385?

Yes, Relugolix is also known as TAK-385. The Phase 3 trials in uterine fibroids refer to the drug as Relugolix (TAK-385) 40 mg, so both names refer to the same compound developed by Takeda.