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WithdrawnNCT01188408Updated Mar 12, 2018

Efficacy and Safety Study of LE-DT to Treat Metastatic Castrate Resistant Prostate Cancer

A Phase 2 interventional study of Liposome Entrapped Docetaxel (LE-DT) in Prostate Cancer, sponsored by INSYS Therapeutics Inc. Withdrawn at 2 sites in United States. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2018-03-12.

Sponsored by INSYS Therapeutics Inc · Phase 2, Interventional, and Treatment

Why this study was withdrawn
Study shut-down in 12/2010 when NeoPharm merged with Insys.
Phase
Phase 2
Study type
Interventional
Enrollment
0
Allocation
Not applicable
Ages
18 Years and older
Sex
Male
01

Study summary

LE-DT is a novel, proprietary delivery system of docetaxel developed by NeoPharm, Inc. Docetaxel (currently marketed as Taxotere) is an anti-microtubular network agent and is one of the most active agents in the treatment of metastatic castrate resistant prostate cancer (CRPC) and other variety of cancers. Taxotere has poor solubility and is designed to be administered with Tween 80 in ethanol. This vehicle causes acute hypersensitivity reaction. By removing toxic detergent used in Taxotere, the form of LE-DT, shows reduced toxicity and comparable therapeutic efficacy in pre-clinical study. The clinical evidence obtained from the NeoPharm Phase I study shows fewer side effects and possibly administered at higher dose to induce greater effectiveness of LE-DT. The current Phase II study is designed to accomplish the following objectives:

  1. Assess the antitumor effect indicator serum prostate specific antigen (PSA) following the intravenous (IV) administration of 110 mg/m2 LE-DT every three weeks in patients with metastatic castrate resistant prostate cancer
  2. To evaluate the measurable soft tissue disease response using the response evaluation criteria in solid tumor (RECIST) methodology
  3. To evaluate the progression-free survival (PFS) and overall survival (OS)
  4. To correlate PSA expression with tumor response
  5. To evaluate the safety of LE-DT at 110 mg/m2 level, in particular peripheral neuropathy, water retention as well as myelotoxicity
  6. To evaluate the quality of life (QOL)
02

Conditions studied

  • Prostate Cancer

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03

In context

Prostatic Neoplasms

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

Browse Prostatic Neoplasms studies →

Lead sponsor

INSYS Therapeutics Inc is the lead sponsor of 45 studies on the registry; none are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 3 (60%) have results posted.

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. Be 18 years or older and male.
  2. Have or cytologically confirmed diagnosis of adenocarcinoma of the prostate.
  3. Patients without evidence of PSA progression must have clinical or radiographic evidence of disease.
  4. Must have castrate levels of testosterone (serum testosterone less than 50ng/dl) by either being on androgen ablation therapy with a luteinizing hormone-releasing hormone (LHRH) agonist or have had a prior bilateral orchiectomy.
  5. Patients must have documented evidence of disease progression: progressive disease is defined as a minimum of three consecutive elevations in PSA each obtained a minimum of one week apart with the last value being greater than 2 ng/mL and/or new metastatic lesions on bone scan (minimum of 2) and/or new or progressive disease on CT or MRI scan.
  6. For patients on an antiandrogen (flutamide, nilutamide, bicalutamide)

    1. If given as part of therapy or for patients who did respond to antiandrogen second line therapy, the patient must demonstrate progression of disease at least 4 weeks beyond discontinuation of such agents to rule out an antiandrogen withdrawal response.
    2. If given as a second line therapy and the patient did not respond or had a decline in PSA for less than 3 months, it is not required to observe for a withdrawal response.
  7. Chemotherapy-naïve patients (unlimited prior regimens of hormonal therapy are acceptable).
  8. Have no other within the past five years, except non-melanoma, skin cancer.
  9. Have recovered from acute toxicities of prior treatment:

    1. Greater than or equal to 4 weeks must have elapsed since receiving hormonal therapy (except for chronic non- gonadotropin releasing hormone analogs or other primary androgen suppressive therapy which are required), biologic agents or any investigational agent (palliative bisphosphonate therapy for bone pain can be administered as clinically indicated).
    2. Greater than or equal to 4 weeks must have elapsed since receiving any radiotherapy
    3. Greater than or equal to 2 weeks must have elapsed since any prior surgery or granulocyte-stimulating growth factor therapy.
  10. Have the following hematology levels at Baseline:

    1. (ANC) greater than or equal to1,500 x 106 cells/L
    2. greater than or equal to 100 x 109 cells/L
    3. greater than or equal to 9 g/L.
  11. Have the following chemistry levels at Baseline:

    1. (SGOT), ALT (SGPT) less than or equal to 1.5 x
    2. Total less than or equal to 1.5 ULN
    3. Creatinine less than or equal to 1.5 ULN; or 24-hour greater than 60 mL/min
    4. Normal serum electrolytes and magnesium levels
  12. Have a of greater than or equal to 12 weeks.
  13. Have an (ECOG) Performance status of 0-2.
  14. Patient or legal representative must understand the investigational nature of this study and sign an Independent Ethics Committee (EC)/Institutional Review Board (IRB)-approved written form (ICF) prior to receiving any study related procedure.

Exclusion criteria

Exclusion Criteria:

  1. Patient has radiographic evidence of active (symptomatic, untreated) intraparenchymal ; any meningeal ; or asymptomatic untreated intraparenchymal brain metastases requiring treatment.
  2. Patient has received prior chemotherapy for metastatic prostate cancer.
  3. Patient has a known infection with or active viral hepatitis.
  4. Patient has active heart disease including myocardial infarction or congestive heart failure within the previous 6 months, symptomatic coronary artery disease, or uncontrolled arrhythmias.
  5. Any condition which in the Investigator's opinion deems the patient an unsuitable candidate to receive study drug (e.g., uncontrolled bleeding or bleeding diathesis).
  6. Any active infection requiring parenteral or oral antibiotics.
  7. Patient treated with any of the following:

    1. Taxol, Taxotere or Abraxane for prostate cancer or any prior
    2. Concurrent radiation therapy (except for palliative radiotherapy for symptomatic bone metastasis which can be administered as clinically indicated)
  8. Patient has pre-existing peripheral neuropathy of Grade greater than 1 based on the National Cancer Institute (NCI-CTCAE).
Terms in these criteria, in plain language(18)

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.

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.

Metastases

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

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.

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.

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.

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).

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.

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.

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.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

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.

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.

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.

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.

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.

CTCAE grade

The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.

1
Mild.
2
Moderate.
3
Severe.
4
Life-threatening.
5
Death due to the event.

“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
0 participants (actual)

Study arms

  • Experimental
    Liposome Entrapped Docetaxel (LE-DT)

    Disease status and tumor responses/progression is assessed in accordance to the RECIST guideline

    Drug: Liposome Entrapped Docetaxel (LE-DT)

Interventions

  • 110 mg/m2 IV (in vein) on day 1 of each 21 day cycle, 6 cycles or until disease progression or unacceptable toxicity

    Also known as: LE-DT, Liposomal Docetaxel

06

What researchers measure

Primary outcomes

  1. Assessment of serum PSA

    Measure serum PSA after 2, 4 and 6 cycles of treatment

    Time frame: 1 year

Secondary outcomes

  1. RECIST method assessment

    Measurable soft tissue disease response based on the RECIST method, PFS, and OS will also be assessed after 2, 4 and 6 cycle to determine the treatment effectiveness with LE-DT after treatment

    Time frame: 1 year

07

Study locations

2 sites
  • Georgetown University Medical center
    Washington, District of Columbia 20007, United States
  • Providence Portland Medical center
    Portland, Oregon 97213-2933, United States
08

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jun 2010, a primary completion of Sep 2011 and a completion of Sep 2011. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 19, 2010
First posted
Aug 25, 2010
Start
Jun 2010
Primary completionEst.
Sep 2011
CompletionEst.
Sep 2011
Last update
Mar 12, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 12, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01188408
First posted
Aug 25, 2010
Start date
Jun 2010
Primary completion
Sep 2011 (estimated)
Completion
Sep 2011 (estimated)
Last update
Mar 12, 2018

Study contacts

Nancy A Dawson, M.D.
principal investigator · Georgetown University
Brendan D Curti, M.D.
principal investigator · Providence Health & Services

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is withdrawn, as verified in Mar 2018. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Liposomal Docetaxel

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