ClinicalTrials.gg
Active, not recruitingNCT07553988Updated Apr 28, 2026

A Comparative Dose-finding Study of RS-113 in Patients With Metastatic Castration-resistant Prostate Cancer

A Phase 2 interventional study of RS-113, 160 mg and RS-113, 240 mg in Metastatic Castration-resistant Prostate Cancer, sponsored by R-Pharm International, LLC. Active, not recruiting at 16 sites in Russia. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-04-28.

Sponsored by R-Pharm International, LLC (part of R-Pharm) · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by May 2026, 5 months ago, but the record still lists the study as active, not recruiting.
  • Registered 1 year 5 months after the study started (first participant enrolled Oct 2024, registered Apr 2026).
Phase
Phase 2
Study type
Interventional
Enrollment
120
Allocation
Randomized
Ages
18 Years and older
Sex
Male
01

Study summary

The primary objective of the study is to determine the therapeutic dose of RS-113 in patients with metastatic castration-resistant prostate cancer based on efficacy, safety, and pharmacokinetic parameters. The secondary objectives are to assess a pilot efficacy and safety of different doses of RS-113 versus abiraterone, as well as to investigate pharmacokinetics profile and to perform a pilot evaluation of pharmacokinetics parameters of RS-113 in patients with metastatic castration-resistant prostate cancer

Read the detailed description

This is an open-label, randomized, comparative phase II clinical trial conducted in 4 treatment arms:

  • Arm 1: RS-113 160 mg (2 capsules) once daily (QD)
  • Arm 2: RS-113 240 mg (3 capsules) QD
  • Arm 3: RS-113 320 mg (4 capsules) QD
  • Arm 4: abiraterone 1000 mg (4 tablets) QD plus prednisolone 10 mg QD

All enrolled patients who have not previously undergone a surgical castration will receive androgen deprivation therapy (ADT) with luteinizing hormone-releasing hormone (LHRH) analogues throughout the study

The study will include the following periods:

  1. Screening period: up to 28 days Days [-27 to -0] prior to the first dose of the study treatment
  2. Core study: up to 2 years Days [1 to 728]

    Eligible patients should be randomized to one of four treatment arms (in a 1:1:1:1 ratio):

    • Arm 1: RS-113 160 mg (2 capsules) QD
    • Arm 2: RS-113 240 mg (3 capsules) QD
    • Arm 3: RS-113 320 mg (4 capsules) QD
    • Arm 4: abiraterone 1000 mg (4 tablets) QD plus prednisolone 10 mg QD

    During the core study, the treatment will continue until the earliest of the following:

    • Day 728 (+7 days)
    • Disease progression (per RECIST 1.1 and PCWG3 criteria)
    • Unacceptable toxicity
    • Patient withdrawal from the study

    During the core study tumor response assessments will be performed approximately every 8 weeks for the first 24 weeks, and every 12 weeks thereafter

  3. Extension phase

    Patients who had stable disease or tumor response within 2 years of treatment may be enrolled in an extension study. During the Extension phase, patients will continue to receive the same treatment regimen as assigned in the Core study

    During the Extension phase, the treatment will be administered from Day 728 until the earliest of the following:

    • Disease progression
    • Unacceptable toxicity
    • Patient withdrawal from the study
  4. Follow-up period (follow-up/FU)

    • Patients who complete the planned 2-year study treatment and are not enrolled in the Extension phase will have one in-person Follow-up (FU) visit 28±3 days after the last dose of investigational product/comparator. This will be the final study visit for these patients. Subsequent treatment will be provided through the national healthcare system (as part of routine clinical practice) if indicated.
    • Patients who discontinue treatment early due to disease progression will have one in-person FU visit 28±3 days after the last dose of investigational product/comparator (for safety data collection). Thereafter, follow-up will be conducted via telephone contacts every 12 weeks until Day 728 or death (for survival data collection).
    • Patients who discontinue treatment early for reasons other than disease progression will have one in-person FU visit 28±3 days after the last dose of investigational product/comparator (for safety data collection). Subsequently, they will undergo FU visits with tumor response assessments every 8 weeks until Day 169, and then every 12 weeks until Day 728, disease progression, or initiation of new treatment, whichever occurs first

Completing the last visit means the end of participation in the clinical trial for each particular patient

02

Conditions studied

  • Metastatic Castration-resistant Prostate Cancer

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Keywords

  • Metastatic Castration-resistant Prostate Cancer
  • RS-113
03

In context

Prostatic Neoplasms

7,046 studies on the registry are indexed under Prostatic Neoplasms; 1,580 are open to participants now.

This study's planned enrollment of 120 is above the median of 60 across 5,348 interventional studies indexed under Prostatic Neoplasms.

Browse Prostatic Neoplasms studies →

Lead sponsor

R-Pharm International, LLC is the lead sponsor of 17 studies on the registry; 4 are open to participants now.

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

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Voluntarily signed and dated Form (ICF) of the patient agreed to take part in this Study
  2. confirmed diagnosis of prostate adenocarcinoma showing no neuroendocrine, signet-ring cell, small cell, or ductal differentiation
  3. Ongoing androgen deprivation therapy for prostate cancer aimed at testosterone suppression with a luteinizing hormone-releasing hormone (LHRH) agonist or antagonist at a stable dose and schedule for at least 4 weeks immediately prior to Day 1, or a history of bilateral orchiectomy (i.e., medical or surgical castration). Patients who have not undergone bilateral orchiectomy must agree to continue effective continuous LHRH analogue therapy throughout the study
  4. Serum testosterone level ≤ 50 ng/dL (1.73 nmol/L)
  5. Prostate-specific antigen (PSA) level > 2 ng/mL
  6. Evidence of progressive disease at the time of randomization, defined by one or more of the following criteria:

    • PSA progression, defined as at least two consecutive increases in PSA levels occurring ≥ 2 weeks apart, with at least one increase documented during screening; the PSA level at screening must be ≥ 2 ng/mL
    • Soft tissue disease progression based on computed tomography (CT) or magnetic resonance imaging (MRI) assessment per v1.1
    • Bone disease progression based on bone scintigraphy findings
  7. Disease progression occurring during androgen deprivation therapy or during or after docetaxel chemotherapy administered as treatment for hormone-sensitive prostate cancer
  8. Asymptomatic or mildly symptomatic prostate cancer, defined as a score \< 4 on Question 3 of the Brief Pain Inventory-Short Form (BPI-SF)
  9. (ECOG) performance status of 0 or 1
  10. ≥ 24 weeks
  11. Major organ function must meet the following criteria:

    • (ANC) ≥ 1,500/mm\^3 (1.5 × 10\^9 cells/L)
    • count ≥ 100,000/mm\^3 (100 × 10\^9 cells/L)
    • ≥ 90 g/L
    • Total ≤ 1.5 ×
    • (AST) and alanine aminotransferase (ALT) ≤ 3 × ULN, or ≤ 3 × ULN in the presence of liver metastases
    • Serum creatinine \< 1.5 × ULN or estimated (eGFR) > 45 mL/min, calculated using CKD-EPI equations
  12. Fertile male patients must agree to abstain from heterosexual intercourse or to use highly effective methods of , starting from the date of signing the informed consent form, throughout the entire study treatment period, and for at least 28 days after product/comparator discontinuation

Exclusion criteria

Exclusion Criteria:

  1. Presence of central nervous system (CNS) that are progressive or associated with clinical symptoms (e.g., cerebral edema, spinal cord compression), or requiring treatment with and/or anticonvulsants. Patients with may be enrolled in case adequate treatment (surgery and/or radiotherapy) has been completed and radiographic stability has been documented for at least 4 weeks prior to the planned date of randomization. Newly diagnosed CNS metastases identified during screening that are asymptomatic and do not require treatment are not considered an exclusion criterion
  2. Prior antitumor therapy:

    • Radiotherapy (except palliative irradiation of bone lesions for pain control) within 4 weeks prior to the planned date of randomization
    • Prior treatment with first-generation antiandrogens (flutamide, bicalutamide, nilutamide) within 4 weeks prior to the planned date of randomization
    • Prior treatment with second-generation antiandrogens (enzalutamide, apalutamide, darolutamide)
    • Use of bisphosphonates or denosumab is permitted only if treatment was initiated prior to the planned date of randomization
  3. cardiovascular disease, including:

    • Myocardial infarction within 6 months prior to the planned date of randomization
    • Unstable angina within 3 months prior to the planned date of randomization
    • Chronic heart failure class III or IV
    • Clinically significant ventricular arrhythmias (ventricular tachycardia, ventricular fibrillation)
    • > 460 ms on (calculated using Fridericia formula), or long QT syndrome identified at screening
    • ≤ 50% by echocardiography
    • Hypotension (systolic blood pressure \< 80 mmHg) or bradycardia (heart rate \< 50 bpm), except when drug-induced (e.g., beta-blockers), at the time of the planned randomization
    • Uncontrolled arterial hypertension (systolic blood pressure > 180 mmHg or diastolic blood pressure > 105 mmHg) at the time of the planned randomization
  4. Clinically significant CNS disorders, including:

    • History of seizures or conditions that may predispose to seizure development
    • Presence of stroke or within 12 months prior to the planned date of randomization
    • Primary brain tumors, cerebral arteriovenous malformations, meningiomas, schwannomas, or other benign CNS disorders that may require surgical or radiation treatment (patients with such conditions may be enrolled if no surgical or radiotherapy intervention is required)
    • Traumatic brain injury or loss of consciousness within 12 months prior to the planned date of randomization
  5. Presence of untreated spinal cord compression or any other severe or systemic disease increasing the risk of treatment-related complications
  6. Presence of clinically significant pituitary or adrenal dysfunction that cannot be adequately controlled with stable-dose hormonal or other standard therapy for at least 28 days prior to the planned date of randomization
  7. History of another that is progressive or required anticancer treatment (including hormonal therapy) within 5 years prior to the planned date of randomization, except curatively treated basal cell or squamous cell carcinoma of the skin
  8. History of other significant comorbid conditions that, in the investigator's opinion, may worsen during the study, including uncontrolled diabetes mellitus
  9. Prior or concomitant therapy:

    • Use of medications that may induce seizures within 4 weeks prior to the planned date of randomization
    • Use of inhibitors or inducers of or CYP2D6 within 4 weeks prior to the planned date of randomization
    • Use of medications classified as QT prolongation risk class I within 4 weeks prior to the planned date of randomization; QT risk class II medications are permitted if administered at a stable dose for at least 5 half-lives prior to the planned date of randomization
    • Prior or concomitant treatment with 5-alpha reductase inhibitors or anabolic steroids within 6 months prior to the planned date of randomization
    • Prior systemic glucocorticosteroid therapy at doses equivalent to ≥ 10 mg prednisone within 3 months prior to the planned date of randomization, except corticosteroids administered following brain irradiation, if treatment has been completed prior to enrollment in the study
  10. History of allergic reactions, including reactions to medicinal products or food, that are clinically significant, in the opinion of the investigator
  11. Presence of conditions limiting the patient's ability to comply with protocol requirements, including dementia, neurological or psychiatric disorders, substance or alcohol abuse, or religious or personal beliefs potentially limiting standard treatment during the study. Patients receiving narcotic analgesics for pain control may be enrolled.
  12. Concurrent participation in another interventional clinical trial within 30 days prior to signing the form (if at least one dose of product/comparator was received), or prior participation in this study (if at least one capsule of RS-113 or one tablet of abiraterone was administered by the patient)
  13. Acute infectious diseases or exacerbation of chronic infections within 14 days prior to the planned date of randomization
  14. Presence of current or C infection, evidence of infection or active syphilis
  15. Use of within 30 days prior to the planned date of randomization. For patients receiving approved SARS-CoV-2 vaccines, the instructions for use and/or local requirements must be followed. Use of the Sputnik V vaccine is permitted provided that at least 7 days have elapsed between administration of the second vaccine dose and the first dose of the investigational product
  16. Inability to swallow the investigational or comparator product
  17. Inability to administer intravenous contrast
  18. Presence of (grade ≥ 3) to any component of RS-113, abiraterone, prednisone, or LHRH agonists (goserelin, leuprorelin, triptorelin, buserelin)
  19. Presence of any other significant concomitant disease or condition that, in the investigator's reasonable judgment, may adversely affect the patient's participation, safety, or interpretation of study results
Terms in these criteria, in plain language(30)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

RECIST

The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.

“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

Metastases

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

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

TIA (transient ischaemic attack)

A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.

Stroke symptoms need emergency care at once, even if they go away.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
120 participants (estimated)

Study arms

  • Experimental
    RS-113, 160 mg + androgen deprivation therapy (ADT)

    RS-113 is taken once daily (QD) orally, 2 capsules at a time (160 mg), 1 hour after a meal in the morning Androgen deprivation therapy (ADT) will be administered using analogues of luteinizing hormone-releasing hormone (aLHRH): * goserelin (at a dose of 3.6mg every 28 days or 10.8 mg every 84 days, subcutaneously, into the anterior abdominal wall), or * leuprorelin (7.5 mg every 28 days or 22.5 mg every 3 months, subcutaneously, into the anterior abdominal wall), or * triptorelin (3.75 mg every 28 days intramuscularly), or * buserelin (3.75 mg every 28 days, intramuscularly)

    Drug: RS-113, 160 mg · Drug: Androgen deprivation therapy (ADT)

  • Experimental
    RS-113, 240 mg + androgen deprivation therapy (ADT)

    RS-113 is taken orally QD, 3 capsules at a time (240 mg), 1 hour after a meal in the morning Androgen deprivation therapy (ADT) will be administered using analogues of luteinizing hormone-releasing hormone (aLHRH): * goserelin (at a dose of 3.6mg every 28 days or 10.8 mg every 84 days, subcutaneously, into the anterior abdominal wall), or * leuprorelin (7.5 mg every 28 days or 22.5 mg every 3 months, subcutaneously, into the anterior abdominal wall), or * triptorelin (3.75 mg every 28 days intramuscularly), or * buserelin (3.75 mg every 28 days, intramuscularly)

    Drug: RS-113, 240 mg · Drug: Androgen deprivation therapy (ADT)

  • Experimental
    RS-113, 320 mg + androgen-deprivation therapy (ADT)

    RS-113 is taken orally QD, 4 capsules at a time (320 mg), 1 hour after a meal in the morning Androgen deprivation therapy (ADT) will be administered using analogues of luteinizing hormone-releasing hormone (aLHRH): * goserelin (at a dose of 3.6mg every 28 days or 10.8 mg every 84 days, subcutaneously, into the anterior abdominal wall), or * leuprorelin (7.5 mg every 28 days or 22.5 mg every 3 months, subcutaneously, into the anterior abdominal wall), or * triptorelin (3.75 mg every 28 days intramuscularly), or * buserelin (3.75 mg every 28 days, intramuscularly)

    Drug: RS-113, 320 mg · Drug: Androgen deprivation therapy (ADT)

  • Active comparator
    Abiraterone + prednisolone + androgen deprivation therapy (ADT)

    Abiraterone is taken at a dose of 1000 mg (4 tablets of 250 mg) QD, 1 hour before a meal or 2 hours after a meal in combination with prednisolone at a dose of 10 mg (2 tablets of 5 mg) QD Androgen deprivation therapy (ADT) will be administered using analogues of luteinizing hormone-releasing hormone (aLHRH): * goserelin (at a dose of 3.6mg every 28 days or 10.8 mg every 84 days, subcutaneously, into the anterior abdominal wall), or * leuprorelin (7.5 mg every 28 days or 22.5 mg every 3 months, subcutaneously, into the anterior abdominal wall), or * triptorelin (3.75 mg every 28 days intramuscularly), or * buserelin (3.75 mg every 28 days, intramuscularly)

    Drug: Abiraterone · Drug: Prednisolone · Drug: Androgen deprivation therapy (ADT)

Interventions

  • DrugRS-113, 160 mg

    Hard gelatin capsules, 80 mg

    Also known as: L01069

  • DrugRS-113, 240 mg

    Hard gelatin capsules, 80 mg

    Also known as: L01069

  • DrugRS-113, 320 mg

    Hard gelatin capsules, 80 mg

    Also known as: L01069

  • Tablets, 250 mg

  • Tablets, 5 mg

  • DrugAndrogen deprivation therapy (ADT)

    * Goserelin: subcutaneous implant, 3.6 mg or 10.8 mg, or * Leuprorelin: lyophilisate for solution for subcutaneous injection, 7.5 mg or 22.5 mg, or * Triptorelin: lyophilisate for solution for intramuscular injection, 3.75 mg, or * Buserelin: lyophilisate for solution for intramuscular injection, 3.75 mg

06

What researchers measure

Primary outcomes

  1. Median Progression-free survival (PFS) at 1 year in RS-113 treatment arms

    Progression-free survival (PFS) expressed as the median PFS for a period of up to 1 year of treatment inclusive in RS-113 treatment arms (per RECIST 1.1 and PCWG3 criteria) PFS is defined as the time from randomization to disease progression per RECIST 1.1 (an ≥ 20% increase in the sum of diameters of target lesions taking as reference the smallest sum recorded during the study (with an absolute increase of sum at least 5 mm), or the appearance of ≥ 1 new lesions), or death due to any cause According to PCWG3, progression is defined as: * two or more new lesions detected on the first post-baseline scan with at least 2 additional lesions on a subsequent scan * two or more new lesions detected on a subsequent scan (if one or no new lesions were seen at the first post-baseline scan) and confirmed by a follow-up scan

    Time frame: Up to day 337 (visit 16)

Secondary outcomes

  1. Progression-free survival (PFS) rate (%) at 1 year in RS-113 treatment arms

    Progression-free survival (PFS) expressed as the rate (%) at 1 year PFS in RS-113 treatment arms (per RECIST 1.1 and PCWG3 criteria) PFS is defined as the time from randomization to disease progression per RECIST 1.1 (an ≥ 20% increase in the sum of diameters of target lesions taking as reference the smallest sum recorded during the study (with an absolute increase of sum at least 5 mm), or the appearance of ≥ 1 new lesions), or death due to any cause According to PCWG3, progression is defined as: * two or more new lesions detected on the first post-baseline scan with at least 2 additional lesions on a subsequent scan * two or more new lesions detected on a subsequent scan (if one or no new lesions were seen at the first post-baseline scan) and confirmed by a follow-up scan

    Time frame: Up to day 337 (visit 16)

  2. Prostate-specific antigen (PSA) response rate (%) in RS-113 treatment arms

    Prostate-specific antigen (PSA) response rate (%) in RS-113 treatment arms

    Time frame: at Week 9, 21, 33, 45, 57, 69, 81, 93, 101 and FU visit

  3. Number (%) of patients achieved ≥50% prostate-specific antigen (PSA) decline in RS-113 treatment arms

    Number (%) of patients achieved ≥50% PSA decline at 6, 12, 18 and 24 months in RS-113 treatment arms Defined as a ≥50% reduction in PSA level from baseline at any time post-baseline. The response must be confirmed by the next PSA assessment performed at least 2 weeks later

    Time frame: once at screening, on days 29 (visit 3), 57 (visit 5), 85-701 (visits 7-29) and FU visit

  4. Number (%) of patients achieved ≥90% prostate-specific antigen (PSA) decline in RS-113 treatment arm

    Number (%) of patients achieved ≥90% PSA decline at 6, 12, 18 and 24 months in RS-113 treatment arm Defined as a ≥90% reduction in PSA level from baseline at any time post-baseline. The response must be confirmed by the next PSA assessment performed at least 2 weeks later

    Time frame: once at screening, on days 29 (visit 3), 57 (visit 5), 85-701 (visits 7-29) and FU visit

  5. Objective response rate (ORR)(%) at 1 year in RS-113 treatment arms

    The objective response rate (ORR)(%) is defined as the percentage of patients in RS-113 treatment arms who achieve a complete or partial response per RECIST 1.1: * Complete response (CR): disappearance of all target lesions confirmed by CT for at least 4 weeks; the short axis of any lymph node previously considered pathological (target or non-target) must be \< 10 mm * Partial response (PR): at least a 30% decrease in the sum of diameters of target lesions sustained for at least 4 weeks taking as reference the baseline sum at screening

    Time frame: once at screening, on days 57 (visit 5), 113 (visit 8), 169 (visit 10), 253 (visit 13), 337 (visit 16) and FU visit

  6. Disease control rate (DCR)(%) at 1 year in RS-113 treatment arms

    The disease control rate is defined as the percentage of patients in RS-113 treatment arms who achieve a complete response, partial response, or stable disease during treatment per RECIST 1.1: * Complete Response (CR) - disappearance of all target lesions, confirmed by CT scans for at least 4 weeks; the short axis of any lymph node previously considered pathological (target or non-target) must be \<10 mm * Partial Response (PR) - at least a 30% decrease in the sum of diameters of target lesions, maintained for at least 4 weeks taking as reference the baseline (screening) measurements * Stable Disease (SD) - neither sufficient shrinkage in the sum of diameters to qualify as partial response nor sufficient increase to qualify as progressive disease taking as reference the smallest sum recorded during the study

    Time frame: once at screening, on days 57 (visit 5), 113 (visit 8), 169 (visit 10), 253 (visit 13), 337 (visit 16) and FU visit

  7. Time to Tumor Response (TTR) at 1 year in RS-113 treatment arms

    Time to Tumor Response (TTR) at 1 year in RS-113 treatment arms

    Time frame: once at screening, on days 57 (visit 5), 113 (visit 8), 169 (visit 10), 253 (visit 13), 337 (visit 16) and FU visit

  8. Duration of Response (DOR) at 1 year in RS-113 treatment arms

    Duration of Response (DOR) at 1 year in RS-113 treatment arms

    Time frame: once at screening, on days 57 (visit 5), 113 (visit 8), 169 (visit 10), 253 (visit 13), 337 (visit 16) and FU visit

  9. Time to prostate-specific antigen (PSA) progression in RS-113 treatment arms

    Time to PSA progression is the time from randomization to the earliest date of confirmed PSA progression (per PCWG3 criteria). The date of PSA progression is defined as the date of a documented ≥25% increase in PSA and an absolute increase of ≥2 ng/mL above the nadir (or above baseline for patients with no PSA decline by Week 12), confirmed by two consecutive values obtained at least 3 weeks apart

    Time frame: once at screening, on days 29 (visit 3), 57 (visit 5), 85-701 (visits 7-29) and FU visit

  10. Radiographic Progression-Free Survival (rPFS) at 1 year in RS-113 treatment arms

    Radiographic Progression-Free Survival (rPFS) in RS-113 treatment arms, expressed as median rPFS for a period of up to 1 year of treatment inclusive (defined as the time from randomization to the first objective evidence of radiographic disease progression per RECIST 1.1 criteria or death due to any cause)

    Time frame: Up to day 337 (visit 16)

  11. Overall survival (OS) rate (%) at 1 year in RS-113 treatment arms

    Overall survival (OS) expressed as the rate (%) at 1 year OS in RS-113 treatment arms

    Time frame: Up to day 337 (visit 16)

  12. Number of patients (%) with adverse drug reactions (ADRs) of any severity

    Number of patients (%) with adverse drug reactions (ADRs) of any severity

    Time frame: Up to day 701 (visit 29)

  13. Number of patients (%) with adverse events (AEs) of any severity

    Number of patients (%) with adverse events (AEs) of any severity

    Time frame: Up to day 701 (visit 29)

  14. Number of patients (%) with AEs grade ≥ 3 per CTCAE v. 5.0

    Number of patients (%) with AEs grade ≥ 3 per CTCAE v. 5.0

    Time frame: Up to day 701 (visit 29)

  15. Number of patients (%) with ADRs grade ≥ 3 per CTCAE v. 5.0

    Number of patients (%) with ADRs grade ≥ 3 per CTCAE v. 5.0

    Time frame: Up to day 701 (visit 29)

  16. Number of patients (%) with serious adverse events (SAEs)

    Number of patients (%) with serious adverse events (SAEs) SAEs will be graded according to the National Cancer Institute Common Terminology Criteria for adverse events (NCI-CTCAE) version 5.0

    Time frame: Up to day 701 (visit 29)

  17. Number of patients (%) with serious adverse drug reactions (SADRs)

    Number of patients (%) with serious adverse drug reactions (SADRs) SADRs will be graded according to the National Cancer Institute Common Terminology Criteria for adverse events (NCI-CTCAE) version 5.0

    Time frame: Up to day 701 (visit 29)

  18. Number of patients (%) who required discontinuation of treatment due to development of ADRs

    Number of patients (%) who required discontinuation of treatment due to development of ADRs ADRs will be graded according to the National Cancer Institute Common Terminology Criteria for adverse events (NCI-CTCAE) version 5.0

    Time frame: Up to day 701 (visit 29)

  19. Number of patients (%) who required discontinuation of treatment due to development of SADRs

    Number of patients (%) who required discontinuation of treatment due to development of SADRs SADRs will be graded according to the National Cancer Institute Common Terminology Criteria for adverse events (NCI-CTCAE) version 5.0

    Time frame: Up to day 701 (visit 29)

Other outcomes

  1. Median progression-free survival (PFS) at 1 year (comparative assesment)

    Progression-free survival (PFS) expressed as the median PFS for a period of up to 1 year of treatment inclusive (per RECIST 1.1 and PCWG3 criteria) (comparative assessment of median PFS at 1 year in each RS-113 treatment arm versus abiraterone plus prednisolone) PFS is defined as the time from randomization to disease progression per RECIST 1.1 (an ≥ 20% increase in the sum of diameters of target lesions taking as reference the smallest sum recorded during the study (with an absolute increase of sum at least 5 mm), or the appearance of ≥ 1 new lesions), or death due to any cause According to PCWG3, progression is defined as: * two or more new lesions detected on the first post-baseline scan with at least 2 additional lesions on a subsequent scan * two or more new lesions detected on a subsequent scan (if one or no new lesions were seen at the first post-baseline scan) and confirmed by a follow-up scan

    Time frame: Up to day 337 (visit 16)

  2. Progression-free survival (PFS) rate (%) at 1 year (comparative assessment)

    Progression-free survival (PFS) expressed as the rate (%) at 1 year PFS (per RECIST 1.1 and PCWG3 criteria) (comparative assessment of PFS rate (%) at 1 year in each RS-113 treatment arm versus abiraterone plus prednisolone) PFS is defined as the time from randomization to disease progression per RECIST 1.1 (an ≥ 20% increase in the sum of diameters of target lesions taking as reference the smallest sum recorded during the study (with an absolute increase of sum at least 5 mm), or the appearance of ≥ 1 new lesions), or death due to any cause According to PCWG3, progression is defined as: * two or more new lesions detected on the first post-baseline scan with at least 2 additional lesions on a subsequent scan * two or more new lesions detected on a subsequent scan (if one or no new lesions were seen at the first post-baseline scan) and confirmed by a follow-up scan

    Time frame: Up to day 337 (visit 16)

  3. Median progression-free survival (PFS) at 2 years (comparative assesment)

    Progression-free survival (PFS) expressed as the median PFS for a period of up to 2 years of treatment inclusive (per RECIST 1.1 and PCWG3 criteria) (comparative assessment of median PFS at 2 years in each RS-113 treatment arm versus abiraterone plus prednisolone) PFS is defined as the time from randomization to disease progression per RECIST 1.1 (an ≥ 20% increase in the sum of diameters of target lesions taking as reference the smallest sum recorded during the study (with an absolute increase of sum at least 5 mm), or the appearance of ≥ 1 new lesions), or death due to any cause According to PCWG3, progression is defined as: * two or more new lesions detected on the first post-baseline scan with at least 2 additional lesions on a subsequent scan * two or more new lesions detected on a subsequent scan (if one or no new lesions were seen at the first post-baseline scan) and confirmed by a follow-up scan

    Time frame: Up to day 701 (visit 29)

  4. Progression-free survival (PFS) rate (%) at 2 years (comparative assessment)

    Progression-free survival (PFS) expressed as the rate (%) of 2-years PFS (per RECIST 1.1 and PCWG3 criteria) (comparative assessment of PFS rate (%) at 2 years in each RS-113 treatment arm versus abiraterone plus prednisolone) PFS is defined as the time from randomization to disease progression per RECIST 1.1 (an ≥ 20% increase in the sum of diameters of target lesions taking as reference the smallest sum recorded during the study (with an absolute increase of sum at least 5 mm), or the appearance of ≥ 1 new lesions), or death due to any cause According to PCWG3, progression is defined as: * two or more new lesions detected on the first post-baseline scan with at least 2 additional lesions on a subsequent scan * two or more new lesions detected on a subsequent scan (if one or no new lesions were seen at the first post-baseline scan) and confirmed by a follow-up scan

    Time frame: Up to day 701 (visit 29)

  5. Prostate-specific antigen (PSA) response rate (%) (comparative assessment)

    Prostate-specific antigen (PSA) response rate (%) (comparative assessment of PSA response rate (%) in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: once at screening, on days 57 (week 9), 141 (week 21), 225 (week 33), 309 (week 45), 393 (week 57), 477 (week 69), 561 (week 81), 645 (week 93), 701 (week 101) and FU visit

  6. Number (%) of patients achieved ≥50% prostate-specific antigen (PSA) decline (comparative assessment)

    Number (%) of patients achieved ≥50% PSA decline at 6, 12, 18 and 24 months (comparative assessment of PSA response rate (%) in each RS-113 treatment arm versus abiraterone plus prednisolone) Defined as a ≥50% reduction in PSA level from baseline at any time post-baseline. The response must be confirmed by the next PSA assessment performed at least 2 weeks later

    Time frame: once at screening, on days 29 (visit 3), 57 (visit 5), 85-701 (visits 7-29) and FU visit

  7. Number (%) of patients achieved ≥90% prostate-specific antigen (PSA) decline (comparative assessment)

    Number (%) of patients achieved ≥90% PSA decline at 6, 12, 18 and 24 months (comparative assessment of PSA response rate (%) in each RS-113 treatment arm versus abiraterone plus prednisolone) Defined as a ≥90% reduction in PSA level from baseline at any time post-baseline. The response must be confirmed by the next PSA assessment performed at least 2 weeks later

    Time frame: once at screening, on days 29 (visit 3), 57 (visit 5), 85-701 (visits 7-29) and FU visit

  8. Objective response rate (ORR)(%) at 1 year (comparative assessment)

    Objective response rate (ORR)(%) at 1 year (comparative assessment of ORR in each RS-113 treatment arm versus abiraterone plus prednisolone) The ORR is defined as the percentage of patients in each RS-113 treatment arm versus abiraterone plus prednisolone who achieve a complete or partial response per RECIST 1.1: * Complete response (CR): disappearance of all target lesions confirmed by CT for at least 4 weeks; the short axis of any lymph node previously considered pathological (target or non-target) must be \< 10 mm * Partial response (PR): at least a 30% decrease in the sum of diameters of target lesions sustained for at least 4 weeks taking as reference the baseline sum at screening

    Time frame: once at screening, on days 57 (visit 5), (visit 8), 113 (visit 10), 253 (visit 13), 337 (visit 16) and FU visit

  9. Objective response rate (ORR)(%) at 2 years (comparative assessment)

    Objective response rate (ORR)(%) at 2 years (comparative assessment of ORR in each RS-113 treatment arm versus abiraterone plus prednisolone) The ORR is defined as the percentage of patients in each RS-113 treatment arm versus abiraterone plus prednisolone who achieve a complete or partial response per RECIST 1.1: * Complete response (CR): disappearance of all target lesions confirmed by CT for at least 4 weeks; the short axis of any lymph node previously considered pathological (target or non-target) must be \< 10 mm * Partial response (PR): at least a 30% decrease in the sum of diameters of target lesions sustained for at least 4 weeks taking as reference the baseline sum at screening

    Time frame: once at screening, on days 57 (visit 5), (visit 8), 113 (visit 10), 253 (visit 13), 337 (visit 16), 421 (visit 19), 505 (visit 22), 589 (visit 25), 673 (visit 28) and FU visit

  10. Disease control rate (DCR)(%) at 1 year (comparative assessment)

    Disease control rate (DCR)(%) at 1 year (comparative assessment of DCR in each RS-113 treatment arm versus abiraterone plus prednisolone) The DCR is defined as the percentage of patients in each RS-113 treatment arm versus abiraterone plus prednisolone who achieve a complete response, partial response, or stable disease during treatment per RECIST 1.1: * Complete Response (CR) - disappearance of all target lesions, confirmed by CT scans for at least 4 weeks; the short axis of any lymph node previously considered pathological (target or non-target) must be \<10 mm * Partial Response (PR) - at least a 30% decrease in the sum of diameters of target lesions, maintained for at least 4 weeks taking as reference baseline (screening) measurements * Stable Disease (SD) - neither sufficient shrinkage in the sum of diameters to qualify as partial response nor sufficient increase to qualify as progressive disease taking as reference the smallest sum recorded during the study

    Time frame: once at screening, on days 57 (visit 5), (visit 8), 113 (visit 10), 253 (visit 13), 337 (visit 16) and FU visit

  11. Disease control rate (DCR)(%) at 2 years (comparative assessment)

    Disease control rate (DCR)(%) at 2 years (comparative assessment of DCR in each RS-113 treatment arm versus abiraterone plus prednisolone) The DCR is defined as the percentage of patients in each RS-113 treatment arm versus abiraterone plus prednisolone who achieve a complete response, partial response, or stable disease during treatment per RECIST 1.1: * Complete Response (CR) - disappearance of all target lesions, confirmed by CT scans for at least 4 weeks; the short axis of any lymph node previously considered pathological (target or non-target) must be \<10 mm * Partial Response (PR) - at least a 30% decrease in the sum of diameters of target lesions, maintained for at least 4 weeks taking as reference baseline (screening) measurements * Stable Disease (SD) - neither sufficient shrinkage in the sum of diameters to qualify as partial response nor sufficient increase to qualify as progressive disease taking as reference the smallest sum recorded during the study

    Time frame: once at screening, on days 57 (visit 5), (visit 8), 113 (visit 10), 253 (visit 13), 337 (visit 16), 421 (visit 19), 505 (visit 22), 589 (visit 25), 673 (visit 28) and FU visit

  12. Time to Tumor Response (TTR) at 1 year (comparative assessment)

    Time to Tumor Response (TTR) at 1 year (comparative assessment of TTR in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: once at screening, on days 57 (visit 5), (visit 8), 113 (visit 10), 253 (visit 13), 337 (visit 16) and FU visit

  13. Time to Tumor Response (TTR) at 2 years (comparative assessment)

    Time to Tumor Response (TTR) at 2 years (comparative assessment of TTR in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: once at screening, on days 57 (visit 5), (visit 8), 113 (visit 10), 253 (visit 13), 337 (visit 16), 421 (visit 19), 505 (visit 22), 589 (visit 25), 673 (visit 28) and FU visit

  14. Duration of Response (DOR) at 1 year (comparative assessment)

    Duration of Response (DOR) at 1 year (comparative assessment of DOR in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: once at screening, on days 57 (visit 5), (visit 8), 113 (visit 10), 253 (visit 13), 337 (visit 16) and FU visit

  15. Duration of Response (DOR) at 2 years (comparative assessment)

    Duration of Response (DOR) at 2 years (comparative assessment of DOR in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: once at screening, on days 57 (visit 5), (visit 8), 113 (visit 10), 253 (visit 13), 337 (visit 16), 421 (visit 19), 505 (visit 22), 589 (visit 25), 673 (visit 28) and FU visit

  16. Time to prostate-specific antigen (PSA) progression (comparative assessment)

    Time to prostate-specific antigen (PSA) progression (comparative assessment of time to PSA progression in each RS-113 treatment arm versus abiraterone plus prednisolone) Time to PSA progression is the time from randomization to the earliest date of confirmed PSA progression (per PCWG3 criteria). The date of PSA progression is defined as the date of a documented ≥25% increase in PSA and an absolute increase of ≥2 ng/mL above the nadir (or above baseline for patients with no PSA decline by Week 12), confirmed by two consecutive values obtained at least 3 weeks apart

    Time frame: once at screening, on days 29 (visit 3), 57 (visit 5), 85-701 (visits 7-29) and FU visit

  17. Radiographic Progression-Free Survival (rPFS) at 1 year in each RS-113 treatment arm versus abiraterone plus prednisolone (comparative assessment)

    Radiographic Progression-Free Survival (rPFS) in each RS-113 treatment arm versus abiraterone plus prednisolone, expressed as median rPFS for a period of up to 1 year of treatment inclusive (defined as the time from randomization to the first objective evidence of radiographic disease progression per RECIST 1.1 criteria or death due to any cause)(comparative assessment of rPFS in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: Up to day 337 (visit 16)

  18. Radiographic Progression-Free Survival (rPFS) at 2 years in each RS-113 treatment arm versus abiraterone plus prednisolone (comparative assessment)

    Radiographic Progression-Free Survival (rPFS) in each RS-113 treatment arm versus abiraterone plus prednisolone, expressed as median rPFS for a period of up to 2 years of treatment inclusive (defined as the time from randomization to the first objective evidence of radiographic disease progression per RECIST 1.1 criteria or death due to any cause)(comparative assessment of rPFS in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: Up to day 701 (visit 29)

  19. Change in pain intensity from baseline per the BPI-SF questionnaire (comparative assessment)

    Change in pain intensity from baseline per the BPI-SF questionnaire at 6, 12, 18, and 24 months of treatment, and at the first follow-up visit (comparative assessment in each RS-113 treatment arm versus abiraterone plus prednisolone) When completing the BPI-SF (Brief Pain Inventory-Short Form), patients identify pain locations (graphically on a body diagram), rate pain intensity (from 0 \[no pain\] to 10 \[pain as bad as you can imagine\]), and assess the degree of pain interference with quality of life (from 0 \[does not interfere\] to 10 \[completely interferes\])

    Time frame: once at screening, on days 29 (visit 3), 57 (visit 5), 85-701 (visits 7-29) and FU visit

  20. Time to pain progression per the BPI-SF questionnaire (comparative assessment)

    Time to pain progression per the BPI-SF questionnaire (comparative assessment in each RS-113 treatment arm versus abiraterone plus prednisolone) Time to pain progression is the interval from baseline to the date when the participant, according to Item 3 of the Brief Pain Inventory-Short Form (BPI-SF), demonstrates a ≥2-point increase in pain intensity from baseline, observed at two consecutive assessments ≥4 weeks apart, or the initiation of regular opioid use, whichever occurs first

    Time frame: once at screening, on days 29 (visit 3), 57 (visit 5), 85-701 (visits 7-29) and FU visit

  21. Change in quality of life from baseline per the FACT-P (version 4) questionnaire (comparative assessment)

    Change in quality of life from baseline per the FACT-P (version 4) questionnaire at 6, 12, 18, and 24 months of treatment, and at the first follow-up visit (comparative assessment in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: once at screening, on days 29 (visit 3), 57 (visit 5), 85-701 (visits 7-29) and FU visit

  22. Change in quality of life from baseline per the EQ-5D-5L questionnaire (comparative assessment)

    Change in quality of life from baseline per the EQ-5D-5L) questionnaire at 6, 12, 18, and 24 months of treatment, and at the first follow-up visit (comparative assessment in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: once at screening, on days 29 (visit 3), 57 (visit 5), 85-701 (visits 7-29) and FU visit

  23. Overall survival (OS) rate (%) at 1 year (comparative assessment)

    Overall survival (OS) expressed as the rate (%) at 1 year OS (comparative assessment in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: Up to day 337 (visit 16)

  24. Overall survival (OS) rate (%) at 2 years (comparative assessment)

    Overall survival (OS) expressed as the rate (%) of 2-years OS (comparative assessment in each RS-113 treatment arm versus abiraterone plus prednisolone)

    Time frame: Up to day 701 (visit 29)

  25. Area under the plasma drug concentration-time curve (AUC) of RS-113 from time 0 to 24 hours (AUC(0-24))

    Area under the plasma drug concentration-time curve (AUC) of RS-113 from time 0 to 24 hours after the first (single dose) dose, truncated at the point before the second dose, i.e. up to 24 hours (AUC(0-24))

    Time frame: Pre-dose on Day 1 (<30 min before the first dose) and 3 h ± 15 min, 6 h ± 30 min, 10 h ± 30 min, 14 h ± 30 min, 17 h ± 30 min, 22 h ± 30 min, 23 h 55 min ± 30 min post-dose

  26. Maximum plasma concentration of RS-113 after the first dose (Cmax)

    Maximum plasma concentration of RS-113 after the first dose (Cmax)

    Time frame: Pre-dose on Day 1 (<30 min before the first dose) and 3 h ± 15 min, 6 h ± 30 min, 10 h ± 30 min, 14 h ± 30 min, 17 h ± 30 min, 22 h ± 30 min, 23 h 55 min ± 30 min post-dose

  27. Time to reach maximum (peak) plasma concentration of RS-113 following the first dose (Tmax)

    Time to reach maximum (peak) plasma concentration of RS-113 following the first dose (Tmax)

    Time frame: Pre-dose on Day 1 (<30 min before the first dose) and 3 h ± 15 min, 6 h ± 30 min, 10 h ± 30 min, 14 h ± 30 min, 17 h ± 30 min, 22 h ± 30 min, 23 h 55 min ± 30 min post-dose

  28. Volume of distribution of RS-113 after the first dose (Vd)

    Volume of distribution of RS-113 after the first dose (Vd)

    Time frame: Pre-dose on Day 1 (<30 min before the first dose) and 3 h ± 15 min, 6 h ± 30 min, 10 h ± 30 min, 14 h ± 30 min, 17 h ± 30 min, 22 h ± 30 min, 23 h 55 min ± 30 min post-dose

  29. Maximum plasma concentration of RS-113 at steady state (Cmax ss)

    Maximum plasma concentration of RS-113 at steady state (Cmax ss)

    Time frame: Pre-dose on Day 15 (<30 min before the 15th administration) and 3 h ± 15 min, 6 h ± 30 min, 10 h ± 30 min, 14 h ± 30 min, 17 h ± 30 min, 22 h ± 30 min, 23 h 55 min ± 30 min post-dose

  30. Minimum plasma concentration of RS-113 at steady state (Cmin ss)

    Minimum plasma concentration of RS-113 at steady state (Cmin ss)

    Time frame: Pre-dose on Day 15 (<30 min before the 15th dose) and 3 h ± 15 min, 6 h ± 30 min, 10 h ± 30 min, 14 h ± 30 min, 17 h ± 30 min, 22 h ± 30 min, 23 h 55 min ± 30 min post-dose

  31. Area under the plasma drug concentration-time curve (AUC) of RS-113 at steady state (AUCtau ss)

    Area under the plasma drug concentration-time curve (AUC) of RS-113 at steady state (AUCtau ss)

    Time frame: Pre-dose on Day 15 (<30 min before the 15th dose) and 3 h ± 15 min, 6 h ± 30 min, 10 h ± 30 min, 14 h ± 30 min, 17 h ± 30 min, 22 h ± 30 min, 23 h 55 min ± 30 min post-dose

  32. Time to reach maximum (peak) plasma concentration of RS-113 at steady state (Tmax ss)

    Time to reach maximum (peak) plasma concentration of RS-113 at steady state (Tmax ss)

    Time frame: Pre-dose on Day 15 (<30 min before the 15th dose) and 3 h ± 15 min, 6 h ± 30 min, 10 h ± 30 min, 14 h ± 30 min, 17 h ± 30 min, 22 h ± 30 min, 23 h 55 min ± 30 min post-dose

  33. Volume of distribution of RS-113 at steady state (Vd ss)

    Volume of distribution of RS-113 at steady state (Vd ss)

    Time frame: Pre-dose on Day 15 (<30 min before the 15th dose) and 3 h ± 15 min, 6 h ± 30 min, 10 h ± 30 min, 14 h ± 30 min, 17 h ± 30 min, 22 h ± 30 min, 23 h 55 min ± 30 min post-dose

  34. Residual concentration of RS-113 at steady state (Cthrough)

    Residual concentration of RS-113 at steady state (Cthrough)

    Time frame: Pre-dose on Day 15 (<30 min before the 15th dose) and 3 h ± 15 min, 6 h ± 30 min, 10 h ± 30 min, 14 h ± 30 min, 17 h ± 30 min, 22 h ± 30 min, 23 h 55 min ± 30 min post-dose

07

Study locations

16 sites
  • State Budgetary Healthcare Institution of the Arkhangelsk Region "Arkhangelsk Oncology Dispensary"
    Arkhangelsk, 163045, Russia
  • Moscow City Clinical Oncology Hospital No. 62 of the Moscow Department of Healthcare
    Istra, 143515, Russia
  • Ivanovo Regional Oncology Dispensary
    Ivanovo, 153040, Russia
  • Kaluga Regional Clinical Oncology Dispensary
    Kaluga, 248007, Russia
  • State Budgetary Healthcare Institution "Leningrad Regional Clinical Hospital"
    Kuz'molovskiy, 191104, Russia
  • Oncology Center No. 1 of the City Clinical Hospital named after S.S. Yudin of the Moscow Healthcare Department
    Moscow, 117152, Russia
  • National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation
    Moscow, 125284, Russia
  • Federal State Autonomous Institution "National Medical Research Center 'Medical and Rehabilitation Center'" of the Ministry of Health of the Russian Federation
    Moscow, 125367, Russia
  • Research Lab LLC
    Moscow, 127521, Russia
  • Joint-Stock Company "Medsi Group of Companies"
    Moscow, 143442, Russia
  • LLC MSCh "Klinitsist-Klinika Pretor"
    Novosibirsk, 630091, Russia
  • Private Healthcare Institution "Clinical Hospital "RZD-Medicine" of Saint-Petersburg"
    Saint Petersburg, 195271, Russia
  • City Clinical Oncology Dispensary (Saint Petersburg)
    Saint Petersburg, 198255, Russia
  • Siberian State Medical University
    Tomsk, 634063, Russia
  • Multidisciplinary Clinical Medical Center "Medical City"
    Tyumen, 625041, Russia
  • State Institution of Healthcare of Yaroslavl Region "Regional Oncology Hospital"
    Yaroslavl, 150054, Russia
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 28, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07553988
Responsible party
Sponsor
First posted
Apr 28, 2026
Start date
Oct 24, 2024
Primary completion
May 14, 2026 (estimated)
Completion
May 9, 2027 (estimated)
Last update
Apr 28, 2026

Study contacts

Mikhail Samsonov
study director · R-Pharm

Oversight

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

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