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STAMPEDE: Systemic Therapy in Advancing or Metastatic Prostate Cancer: Evaluation of Drug Efficacy: A Multi-Stage Multi-Arm Randomised Controlled Trial (STAMPEDE)

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ClinicalTrials.gov Identifier: NCT00268476
Recruitment Status : Recruiting
First Posted : December 22, 2005
Last Update Posted : September 25, 2017
Information provided by (Responsible Party):
Medical Research Council

Brief Summary:

Prostate cancers need the male hormone testosterone to grow. Hormone treatments work by stopping testosterone from reaching prostate cancer cells. There are different types of hormone treatments but the most common are injections or implants that work by stopping the testicles making testosterone. Some men will have an operation to remove a part or all of the testicles instead. This type of treatment is called hormone treatment or androgen deprivation therapy (ADT) and it is part of the current standard approach to the treatment of locally advanced or metastatic prostate cancer. In addition, radiotherapy to the prostate and or docetaxel chemotherapy may be recommended as part of the current standard-of-care.

The overall aim of this trial, which is called STAMPEDE, is to assess novel approaches for the treatment of men with prostate cancer who are starting long-term ADT for the first time, termed hormone-naïve prostate cancer. This trial aims to see if we can improve the way in which prostate cancer is currently managed, either by adding new treatments to the standard approach or by modifying the type of hormone therapy aiming to improve quality-of-life by reducing the side effects of treatment. Each new treatment approach is compared against a control arm receiving the current standard treatments. We aim to identify treatment strategies that enable men to live longer, or as long but with an improved quality-of-life, as well as offering value for money for the health service.

Since opening to accrual in Oct-2005, the trial has tested many ways of treating prostate cancer and some results are now already known. More than 10,000 men will join the trial with answers becoming available throughout the trial. New patients joining the trial from Protocol version 16.0 onwards (activated in June 2017) may be eligible to join one of two treatment comparisons, metformin (treatment group K; the "metformin comparison") and transdermal oestradiol (treatment group L; the "transdermal oestradiol comparison"). A computer program will be used to allocate which treatment each participant receives, using a chance process.

Summary of the research arms in STAMPEDE trial platform Summary of research treatment groups currently open to recruitment (June 2017)

  1. Metformin (Arm K): This anti-diabetic medication is proposed to have both anti-cancer effects and may help prevent the adverse metabolic effects of long-term ADT. STAMPEDE will investigate whether adding metformin to the current standard-of-care for non-diabetic men can improve all-cause survival.
  2. Transdermal oestradiol (Arm L): This is an alternative form of hormone treatment which has been shown to suppress testosterone as effectively as standard ADT and avoid some of the side-effects. It may also help to avoid the adverse metabolic effects and fatigue and therefore improve overall quality of life compared with standard forms of ADT. STAMPEDE will investigate whether transdermal oestradiol can treat the cancer as well as current standard forms of ADT.
  3. Control group (Arm A): Patients allocated to this group receive the current standard-of-care ADT +/- RT +/- docetaxel.

Condition or disease Intervention/treatment Phase
Prostate Cancer Drug: Celecoxib Drug: Docetaxel Drug: Prednisolone Drug: ADT Drug: Zoledronic Acid Drug: Abiraterone Procedure: Orchiectomy Radiation: Radiotherapy to the prostate Drug: Enzalutamide Drug: Metformin Drug: Transdermal Oestradiol Phase 2 Phase 3

Detailed Description:

STAMPEDE (also known as MRC PR08) is a multi-arm multi-stage (MAMS) randomised controlled trial recruiting in the UK and Switzerland. It aims to evaluate multiple therapeutic strategies in the management of high-risk locally advanced and metastatic hormone-naïve prostate cancer. Each novel treatment strategy is compared against a single, contemporaneous control arm. When the trial originally opened in 2005 there were 6 research arms enabling 5 randomised comparisons. Each comparison is evaluated in stages with pre-planned interim analyses after which recruitment may be halted should the experimental treatment fail to reach a "hurdle" of activity. Patient data from all arms and all stages are, however, included in the final analyses of the primary outcome measure, even if the investigational arm did not proceed to the final stage.

Providing sufficient activity is demonstrated, recruitment continues to the final stage and then an assessment of efficacy is determined based on the primary outcome of overall survival. Patient data from all arms and all stages are included in the final analyses of the primary outcome measure, even if the investigational arm did not proceed to the final stage.

The original comparisons which have all now been reported, evaluated a bisphosphonate (zoledronic acid), a cytotoxic chemotherapeutic agent (docetaxel) and a cyclooxygenase (Cox 2) inhibitor (celecoxib), as single agents or combinations. Since the start of the trial, a number of new research arms have been added to STAMPEDE over time to evaluate: abiraterone, a steroid synthesis inhibitor; prostate radiotherapy for patients with newly diagnosed metastatic disease; enzalutamide, an inhibitor of androgen receptor signalling, given with abiraterone; and metformin, an anti-diabetic medication and transdermal oestradiol, to be given as an alternative form of ADT.



To compare the safety and efficacy of novel therapeutic strategies against the current standard-of-care for men with high-risk locally advanced or metastatic prostate cancer starting long-term ADT for the first time.

Outline: This is a randomised, controlled, multi-centre MAMS trial platform. Patients are current randomised to 1 of 3 arms: control group (arm A), metformin treatment group (arm K) and transdermal oestradiol (Arm L). The other arms are all closed to recruitment with results known for all the original comparisons and awaited for others added since the trial commenced.

Patient population: STAMPEDE recruits both men with high-risk locally advanced prostate cancer and men with metastatic prostate cancer, all of whom must be starting long-term ADT for the first time. Patients who received previous radical treatment and are now relapsing with high-risk features are also eligible.

Follow-up: All patients are follow-up life long

Sub-studies: There are several translational sub-studies ongoing as part of STAMPEDE. Participation is optional. These currently include several translational sub-studies involving sample collection: saliva collection for germline DNA analysis, sequential circulating tumour DNA analysis and FFPE tumour block retrieval for DNA and RNA analysis. Other sub-studies include a QOL sub-study and an imaging sub-study.

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 8100 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: STAMPEDE: Systemic Therapy in Advanced or Metastatic Prostate Cancer: Evaluation of Drug Efficacy - Androgen Suppression-Based Therapy Alone or Combined With Zoledronic Acid, Docetaxel, Prednisolone, Celecoxib, Abiraterone, Enzalutamide and/or Radiotherapy, Metformin and Transdermal Oestradiol in Treating Patients With Locally Advanced or Metastatic Prostate Cancer
Study Start Date : September 2005
Estimated Primary Completion Date : September 2024
Estimated Study Completion Date : September 2024

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Prostate Cancer
U.S. FDA Resources

Arm Intervention/treatment
Active Comparator: Arm A Androgen Deprivation Therapy [ADT]
(plus Radiotherapy for newly-diagnosed non-metastatic disease)[Control]
Drug: ADT Procedure: Orchiectomy
Experimental: Arm B (ADT + zoledronic acid)
Drug: ADT Drug: Zoledronic Acid Procedure: Orchiectomy
Experimental: Arm C (ADT + docetaxel + prednisolone)
Drug: Docetaxel Drug: Prednisolone Drug: ADT Procedure: Orchiectomy
Experimental: Arm D (ADT + celecoxib)
Drug: Docetaxel Drug: Prednisolone Drug: ADT Drug: Zoledronic Acid Procedure: Orchiectomy
Experimental: Arm E (ADT + zoledronic acid + docetaxel + prednisolone)
Drug: ADT Drug: Abiraterone Procedure: Orchiectomy
Experimental: Arm F (ADT + zoledronic acid + celecoxib)
Drug: Celecoxib Drug: ADT Procedure: Orchiectomy
Experimental: Arm G (ADT + abiraterone)
Drug: Celecoxib Drug: ADT Procedure: Orchiectomy
Experimental: Arm H (ADT + radiotherapy to the prostate)
Drug: ADT Procedure: Orchiectomy Radiation: Radiotherapy to the prostate
Experimental: Arm J (ADT + abiraterone + enzalutamide)
Drug: Prednisolone Drug: ADT Drug: Abiraterone Drug: Enzalutamide
Experimental: Arm K (ADT+/- prostate RT +/- docetaxel + Metformin)
Drug: Metformin
Experimental: Arm L (Transdermal oestradiol +/- RT +/- docetaxel)
Drug: Transdermal Oestradiol

Primary Outcome Measures :
  1. Overall survival [ Time Frame: 1:Not applicable ]

Secondary Outcome Measures :
  1. Failure-free survival [ Time Frame: 1:Not applicable ]
  2. Cost effectiveness by EuroQol [ Time Frame: 1:Not applicable ]
  3. Quality of life (QOL) by EORTC QOL Questionnaire C30 and prostate specific 25-item [ Time Frame: 1:Not applicable ]
  4. Toxicity [ Time Frame: 1:Not applicable ]
  5. Skeletal related events [ Time Frame: 1:Not applicable ]
  6. Biochemical failure [ Time Frame: 1:Not applicable ]
  7. Progression-free survival [ Time Frame: 1:Not applicable ]
  8. Lymph node progression [ Time Frame: 1:Not applicable ]
  9. Distant metastases [ Time Frame: 1:Not applicable ]
  10. Treatment for progression [ Time Frame: 1:Not applicable ]
  11. Disease-specific survival [ Time Frame: 1:Not applicable ]
  12. Non-prostate cancer death [ Time Frame: 1:Not applicable ]
  13. Metabolic effects [ Time Frame: 1:Not applicable ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   up to 120 Years   (Child, Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No


To be eligible participants must fulfil the criteria within one of the broad disease categories below:

  1. High-Risk Newly-Diagnosed Non-Metastatic Node-Negative Disease (N0M0, with at least two of: T category T3/4, PSA≥40ng/ml or Gleason sum score 8-10 and intention to treat with radical radiotherapy (unless there is a contra-indication; exemption can be sought in advance of consent, after discussion with CTU)
  2. Newly-Diagnosed Non-Metastatic Node-Positive Disease (T any N+ M0)
  3. Newly-Diagnosed metastatic (T any N any M+)
  4. Previously Radically Treated, Now Relapsing (Prior Radical Surgery And/Or Radiotherapy): with at least one of: M1, N+, PSA ≥4ng/ml and rising with doubling time less than 6 months; PSA ≥20ng/ml)

In addition all patients must meet the following criteria:

I. Histologically confirmed prostate adenocarcinoma

II. Intention to treat with long-term androgen deprivation therapy

III. Treating clinician and patient should have decided if docetaxel is to be part of the standard-of-care prior to randomisation

IV. Fit for all protocol treatment and follow-up, WHO performance status 0-2

V. Have completed the appropriate investigations prior to randomisation

VI. Adequate haematological function: neutrophil count >1.5x109 /l and platelets >100x109 /l

VII. Adequate renal function, defined as GFR >30ml/min/1.73m 2

VIII. Serum potassium ≥3.5mmol/L

IX. Written informed consent

X. Willing and expected to comply with follow-up schedule

XI. Using effective contraceptive method if applicable

Patients must not fulfil any of the following general exclusion criteria

I. Prior systemic therapy for locally-advanced or metastatic prostate cancer (except previously radically treated, now relapsing patients (prior radical surgery and/ or radiotherapy)

II. Metastatic brain disease or leptomeningeal disease

III. Abnormal liver functions consisting of any of the following:

  • Serum bilirubin ≥1.5 x ULN (except for patients with Gilbert's disease, for whom the upper limit of serum bilirubin is 51.3µmol/l or 3mg/dl)
  • Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) ≥2.5 x ULN

IV. Any other previous or current malignant disease which, in the judgement of the responsible clinician, is likely to interfere with STAMPEDE treatment or assessment

V. Any surgery (e.g. TURP) performed within the past 4 weeks

VI. Patients with significant cardiovascular disease such that, in the investigator's opinion, the patient is unfit for any of the study treatments. This might include:

  • Severe/unstable angina
  • Myocardial infarction less than 6 months prior to randomisation
  • Arterial thrombotic events less than 6 months prior to randomisation
  • Clinically significant cardiac failure requiring treatment • Cerebrovascular disease (e.g. stroke or transient ischaemic episode) less than 6 months prior to randomisation
  • Patients with uncontrolled hypertension defined as systolic BP greater or equal than 160mmHg or diastolic BP greater or equal than 95mmHg (based on representative values as judged by the investigator)

VII. Prior chemotherapy for prostate cancer (excluding patients receiving docetaxel as part of the new SOC)

VIII. Prior exposure to long-term hormone therapy before randomisation. (Any patients now presenting with relapsed disease, previously treated with adjuvant or neo adjuvant hormone therapy alongside their radical surgery or radiotherapy, must have completed that period of hormone therapy at least 12 months before joining STAMPEDE and it must have been no longer than 12 months in duration).

IX. Prior exposure to systemic treatment for prostate cancer (excluding hormone therapy) e.g. abiraterone and enzalutamide.

Comparison-Specific Selection Criteria

To be eligible for randomisation to the "metformin comparison" patients must fulfil the following criteria:

  • HbA1c <48mmol/mol (equivalent to <6.5%)*
  • Adequate renal function, defined as GFR ≥45ml/min/1.73m2
  • No history of lactic acidosis or pre-disposing conditions
  • Not current or previous treatment with metformin
  • No contra-indications to metformin

    • Except Switzerland, please refer to SAKK appendix for local guidance

Patients who have any of the following are not eligible for the "transdermal oestradiol comparison":

  • >8 weeks of anti-androgen use
  • >1 dose of monthly or 4 weekly LHRH agonist/antagonist
  • Prior LHRH agonist injection with a stated duration of effect greater than 1 month
  • >12 weeks since first dose of any hormone therapy
  • Bilateral orchidectomy
  • Cyproterone acetate started prior to randomisation
  • Known porphyria
  • Any history of deep vein thrombosis or pulmonary embolism confirmed radiologically
  • Known thrombophilic disorder (e.g. Protein C, prostein S, antithrombin deficiency)

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00268476

Contact: STAMPEDE Trial Team +44 (0)20 7670 4700 mrcctu.stampede@ucl.ac.uk

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Hirslanden Klinik Aarau Recruiting
Aarau, Switzerland
Universitaetsspital-Basel Recruiting
Basel, Switzerland, CH-4031
Inselspital Bern Recruiting
Bern, Switzerland
Kantonsspital Graubuenden Recruiting
Chur, Switzerland
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William Harvey Hospital Recruiting
Ashford, England, United Kingdom, TN24 0LZ
Contact: Contact Person    44-1233-633-331      
Stoke Mandeville Hospital Recruiting
Aylesbury, England, United Kingdom, HP21 8AL
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Barnstaple, England, United Kingdom
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Basingstoke, England, United Kingdom
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Birmingham, England, United Kingdom
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Sussex Cancer Centre at Royal Sussex County Hospital Recruiting
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Bristol, England, United Kingdom
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Broomfield, England, United Kingdom
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Durham, England, United Kingdom, DH1 5TW
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Keighley, England, United Kingdom
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Kidderminster, England, United Kingdom
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Lancashire, England, United Kingdom
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Leeds, England, United Kingdom
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Leicester, England, United Kingdom
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London, England, United Kingdom, WC1E 6DD
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Middlesbrough, England, United Kingdom
Northern Centre for Cancer Treatment at Newcastle General Hospital Recruiting
Newcastle-Upon-Tyne, England, United Kingdom
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Northwood, England, United Kingdom
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Nottingham, England, United Kingdom
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Oldham, England, United Kingdom
Churchill Hospital Recruiting
Oxford, England, United Kingdom
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Poole Dorset, England, United Kingdom
Rosemere Cancer Centre at Royal Preston Hospital Recruiting
Preston, England, United Kingdom
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Reading, England, United Kingdom
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Saint Leonards-on-Sea, England, United Kingdom
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Cancer Research Centre at Weston Park Hospital Recruiting
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Stepping Hill Hospital Recruiting
Stockport, England, United Kingdom, SK2 7JE
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Stoke-on-Trent, England, United Kingdom
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Sunderland, England, United Kingdom, SR4 7TP
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Sutton, England, United Kingdom
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Taunton, England, United Kingdom
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Torquay, England, United Kingdom, TQ2 7AA
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Warrington, England, United Kingdom, WA5 1QG
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Westcliff-On-Sea, England, United Kingdom
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Whitehaven, England, United Kingdom
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Worcester, England, United Kingdom, WR5 1DD
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Worthing, England, United Kingdom, BN11 2DH
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Newport, Isle of Wight, United Kingdom
Centre for Cancer Research and Cell Biology at Queen's University Belfast Recruiting
Belfast, Northern Ireland, United Kingdom
Ayr Hospital Recruiting
Ayr, Scotland, United Kingdom
Edinburgh Cancer Centre at Western General Hospital Recruiting
Edinburgh, Scotland, United Kingdom
Beatson Institute for Cancer Research - Glasgow Recruiting
Glasgow, Scotland, United Kingdom
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Inverness, Scotland, United Kingdom
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Aberystwyth, Wales, United Kingdom
Velindre Cancer Center at Velindre Hospital Recruiting
Cardiff, Wales, United Kingdom, CF14 2TL
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Swansea, Wales, United Kingdom
Barnet and Chase Farm Hospital Recruiting
Barnet, United Kingdom
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Cambridge, United Kingdom
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Colchester, United Kingdom
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Larbert, United Kingdom
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Lincoln, United Kingdom
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London, United Kingdom
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Newcastle, United Kingdom
North Tees Hospital Recruiting
Stockton-on-Tees, United Kingdom
New Cross Hospital Recruiting
Wolverhampton, United Kingdom
Yeovil District Hospital Recruiting
Yeovil, United Kingdom
Sponsors and Collaborators
Medical Research Council
Study Chair: Nicholas D. James, MD University Hospital Birmingham

Additional Information:

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
James ND, Sydes MR, Clarke NW, Mason MD, Dearnaley DP, Spears MR, Ritchie AW, Parker CC, Russell JM, Attard G, de Bono J, Cross W, Jones RJ, Thalmann G, Amos C, Matheson D, Millman R, Alzouebi M, Beesley S, Birtle AJ, Brock S, Cathomas R, Chakraborti P, Chowdhury S, Cook A, Elliott T, Gale J, Gibbs S, Graham JD, Hetherington J, Hughes R, Laing R, McKinna F, McLaren DB, O'Sullivan JM, Parikh O, Peedell C, Protheroe A, Robinson AJ, Srihari N, Srinivasan R, Staffurth J, Sundar S, Tolan S, Tsang D, Wagstaff J, Parmar MK; STAMPEDE investigators. Addition of docetaxel, zoledronic acid, or both to first-line long-term hormone therapy in prostate cancer (STAMPEDE): survival results from an adaptive, multiarm, multistage, platform randomised controlled trial. Lancet. 2016 Mar 19;387(10024):1163-77. doi: 10.1016/S0140-6736(15)01037-5. Epub 2015 Dec 21.

Responsible Party: Medical Research Council
ClinicalTrials.gov Identifier: NCT00268476     History of Changes
Other Study ID Numbers: CDR0000455008
First Posted: December 22, 2005    Key Record Dates
Last Update Posted: September 25, 2017
Last Verified: September 2017

Keywords provided by Medical Research Council:
stage III prostate cancer
stage IV prostate cancer
recurrent prostate cancer
adenocarcinoma of the prostate

Additional relevant MeSH terms:
Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Genital Diseases, Male
Prostatic Diseases
Methylprednisolone Hemisuccinate
Polyestradiol phosphate
Prednisolone hemisuccinate
Prednisolone phosphate
Estradiol 3-benzoate
Estradiol 17 beta-cypionate
Estradiol valerate
Prednisolone acetate
Methylprednisolone acetate
Zoledronic acid
Hypoglycemic Agents
Physiological Effects of Drugs
Antineoplastic Agents
Tubulin Modulators
Antimitotic Agents