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Solid TumorsPhase 2NCT00697437

Effect of Ketoconazole Inhibition of CYP3A on Urinary Excretion of Docetaxel

A Phase 2 study testing Docetaxel and Ketoconazole in people with Solid Tumors, run by National University Hospital, Singapore at 1 site in Singapore.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Primary Objective: To confirm if ketoconazole inhibition of CYP3A activity affects fractional excretion of docetaxel in the urine. Secondary Objective: To compare the metabolite ratios of the major metabolites of docetaxel in the presence and absence of CYP3A inhibition. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Solid Tumors
What is being tested?
Docetaxel and Ketoconazole
Could I receive a placebo?
No, everyone receives an active treatment
How many people
10 participants
Where
1 siteSingapore
Study dates
Oct 2006to Oct 2013
Phase
Phase 2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients must have histologically confirmed malignancy that is metastatic or unresectable and for which docetaxel is indicated.
  • Patients must have measurable or evaluable disease.
  • With the exception of alopecia, fatigue, nausea and asthenia, patients must have resolution of all acute toxic effects of any prior surgery' radiotherapy or chemotherapy to National Cancer Institute (NCI) Common Toxicity Criteria version 3.0 grade < 1.
  • Patients must have ECOG performance status ≤ 2 (Karnofsky ≥ 60%).
  • Patients must have a life expectancy of greater than 3 months.
  • Patients must have normal renal and marrow function as defined below:
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  • leukocytes ≥ 3,000/μl
  • absolute neutrophil count ≥ 1,500/μl
  • platelets ≥ 100,000/μl
  • haemoglobin ≥ 7g/dL
  • creatinine ≤ 1.5 X institutional upper limit of normal
  • Patients with abnormal liver function tests (AST/ALT ≤ 3 x institutional upper limits of normal; ALP ≤ 5x ULN; total bilirubin ≤ 2x ULN) will be eligible for enrollment.
  • Patients must have adequate renal functions (serum creatinine within normal laboratory limits).
  • Women of childbearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control) prior to study entry and for the duration of study participation. Females with childbearing potential must have a negative serum pregnancy test within 7 days prior to study enrollment. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately.
  • Ability to understand and the willingness to sign a written informed consent document.

Who cannot join

  • Patients who have had chemotherapy or radiotherapy within 4 weeks prior to entering the study or those who have not recovered from adverse events due to agents administered more than 4 weeks earlier.
  • Patients may not be receiving any other investigational agents.
  • Patients who have rapidly progressive intracranial or spinal metastatic disease (including patients who require corticosteroid for CNS disease).
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to docetaxel or ketoconazole used in study.
  • Patients who have prior medications known to be metabolized by or induce/inhibit CYP3A4 within 1 week of each treatment cycle.
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.
  • Pregnant women are excluded from this study because docetaxel is embryotoxic/fetotoxic with the potential for abortifacient effects. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with docetaxel, breastfeeding should be discontinued if the mother is treated with docetaxel. These potential risks may also apply to other agents used in this study.

Trial locations and contacts

1 site in 1 country.

Singapore1 site
  • National University Hospital

    Singapore

Other trials in Singapore

About this study

Primary Objective:

  • To confirm if ketoconazole inhibition of CYP3A activity affects fractional excretion of docetaxel in the urine.

Secondary Objective:

  • To compare the metabolite ratios of the major metabolites of docetaxel in the presence and absence of CYP3A inhibition.
Read the detailed description

Introduction: This is a follow-up protocol to an earlier study entitled "A phase I study of docetaxel with ketoconazole modulation in solid tumors" (PH14/01) which showed 2-fold reduction in docetaxel clearance and a clear correlation with renal function.

Aims: The aim of this study is to confirm that ketoconazole inhibition of CYP3A activity changes the urinary excretion profile of docetaxel.

Methodology: This is a single-centre, crossover study. Ten patients (calculated sample size =5, α=0.05, β=0.8, difference in means=5%, within group standard deviation=3) will be accrued and randomly assigned to receive docetaxel at either 75mg/m2 q3w x 1 dose or 70mg q3w x 1 dose with ketoconazole 200mg bid x q3d at cycle 1 of chemotherapy. This will be followed by a 20-day washout period before receiving the other regimen of docetaxel at cycle 2. Blood samples of 5mls each will be drawn at times 0, 0.5h, 1h, 1.5h, 3h, 4h, 6h and 24h after the onset of docetaxel infusion for pharmacokinetics analysis. A 24-hour urine collection commencing on the same day as docetaxel infusion will be required of the patients. All urine over the next 24 hours must be collected and returned to the study coordinator on Day 2 of each study cycle for docetaxel analysis and creatinine clearance determination. The amount of docetaxel excreted by each patient with and without ketoconazole modulation will be determined by a LCMSMS method and compared.

Clinical Relevance: This is to ensure the safe advocation of a dose-sparing strategy established in an earlier study for the costly agent docetaxel by confirming if changes in excretion profile occurs once its major route of hepatic metabolism is blocked.

Conditions
Solid Tumors
Being tested
Docetaxel, Ketoconazole

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • DocetaxelDrug

    70mg q3wx 1 dose

  • KetoconazoleDrug

    6 doses of oral ketoconazole 200mg bid starting 2 days before, and with 1 dose to be completed after, docetaxel infusion

Study groups in NCT00697437
Study groupRoleWhat they receive
docetaxel onlyExperimentalNot described
Receives: Drug: Docetaxel
docetaxel with ketoconazoleExperimentalNot described
Receives: Drug: Docetaxel; Drug: Ketoconazole

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. To confirm if ketoconazole inhibition of CYP3A activity affects fractional excretion of docetaxel in the urine.

    Measured: 9 weeks

Secondary outcomes (1)
  1. To compare the metabolite ratios of the major metabolites of docetaxel in the presence and absence of CYP3A inhibition.

    Measured: 12 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted13 Jun 2008 (estimated)
  2. Study startOct 2006
  3. Primary completionOct 2013
  4. Study completionOct 2013

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Masking
None (open label)
Enrolment
10 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00697437
Sponsor's protocol ID
PK01/01/06
Status last verified
Dec 2013
First submitted
11 Jun 2008
Last updated
10 Dec 2013
Results posted
No
Data monitoring committee
Yes

Publications

  • Goh BC, Lee SC, Wang LZ, Fan L, Guo JY, Lamba J, Schuetz E, Lim R, Lim HL, Ong AB, Lee HS. Explaining interindividual variability of docetaxel pharmacokinetics and pharmacodynamics in Asians through phenotyping and genotyping strategies. J Clin Oncol. 2002 Sep 1;20(17):3683-90. doi: 10.1200/JCO.2002.01.025.

    PubMed 12202670
  • Tham LS, Goh BC, Wang LZ, Yong WP, Wong CI, Lee SC, Soo R, Sukri N, Lee HS. Ketoconazole inhibition of CYP3A activity made midazolam but not docetaxel pharmacokinetics more predictable. (Abstr) 2006 American Society for Clinical Pharmacology and Therapeutics Annual Meeting (Baltimore, MD).

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Docetaxel and Ketoconazole in people with Solid Tumors, run by National University Hospital, Singapore at 1 site in Singapore.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 15 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 10 Dec 2013. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Singapore. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

To confirm if ketoconazole inhibition of CYP3A activity affects fractional excretion of docetaxel in the urine. (time frame: 9 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00697437, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Dec 2013.

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