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Study of Sunitinib Malate in Patients With Newly Diagnosed Prostate Cancer Prior to Prostatectomy

31. Juli 2014 aktualisiert von: Duke University

Investigator-Initiated Pilot Study of Sunitinib Malate in Patients With Newly Diagnosed Prostate Cancer Prior to Prostatectomy

The purpose of this study is to look at blood and tissue samples for changes following the use of Sunitinib malate. Additionally, we would like to find out if the drug, Sunitinib malate, is safe and works in men with prostate cancer. Sunitinib malate , also known as Sutent, is approved by the U.S. Food and Drug Administration (FDA), for treatment of tumors of intestines and kidney but it is being tested in research studies for use in men with prostate cancer.

Studienübersicht

Status

Abgeschlossen

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

Eligible patients will be treated with 50 mg once daily for four weeks followed by one to two weeks off treatment prior to undergoing radical prostatectomy. Patients with palpable disease (cT2-3) and patients with 3 or more positive prostatic biopsies from one lobe may undergo an additional study of IFP monitoring before treatment and during week 4 of study treatment. Safety and tolerability of Sunitinib malate therapy at this dose and schedule in this patient population will be assessed. Extensive correlative science evaluations, including assessment of physiologic, cellular, molecular and genetic changes during treatment with Sunitinib malate, will be performed

Studientyp

Interventionell

Einschreibung (Tatsächlich)

30

Phase

  • Phase 2

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

  • Vereinigte Staaten
    • North Carolina
      • Durham, North Carolina, Vereinigte Staaten, 27710
        • Duke University Medical Center
    • Texas
      • Houston, Texas, Vereinigte Staaten, 77030
        • MD Anderson, University of Texas

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Männlich

Beschreibung

Inclusion Criteria:

  • Histologic evidence of adenocarcinoma of the prostate deemed candidates for curative RRP
  • Intermediate or high risk, clinically localized disease
  • Adequate organ function
  • Patients must be surgically sterile or must agree to use effective contraception during the period of therapy
  • Select imaging to rule out metastasis will be done as clinically indicated
  • Signed and date informed consent document

Exclusion Criteria:

  • Prior treatment for prostate cancer
  • Major surgery or radiation therapy within 4 weeks of starting the study treatment
  • NCI CTCAE grade 3 hemorrhage within 4 weeks of starting therapy
  • History of or known metastatic prostate cancer
  • Any of the following within the 6 months prior to study drug administration: myocardial infarction, severe/unstable angina, coronary/peripheral artery bypass graft, symptomatic congestive heart failure, cerebrovascular accident or transient ischemic attack, or pulmonary embolism.
  • Ongoing cardiac dysrhythmias of NCI CTCAE grade 2 or greater
  • QTc interval > 500 msec on baseline EKG
  • Hypertension that cannot be controlled by medications (>150/100 mm Hg despite optimal medical therapy).
  • Pre-existing thyroid abnormality with thyroid function that cannot be maintained in the normal range with medication
  • Known active infection
  • Concurrent treatment on another clinical trial. Supportive care trials or non-treatment trials, e.g. QOL, are allowed.
  • Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or study drug administration, or may interfere with the interpretation of study results, and in the judgment of the investigator would make the subject inappropriate for entry into this study.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Nicht randomisiert
  • Interventionsmodell: Einzelgruppenzuweisung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Sunitinib Malate
Sunitinib Malate 50mg capsule by mouth once daily for 4 weeks
Arzneimittel: Sunitinib Malate
Sunitinib Malate 50mg capsule by mouth once daily for 4 weeks
Andere Namen:
  • Sutent

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Change in Apoptotic Indices Before and After Treatment
Zeitfenster: Baseline and 4 weeks
Pathologic changes will be described using immuno-histochemical techniques (assessment of apoptotic/proliferative indices and microvessel density (MVD)) using paraffin-embedded samples and freshly cut slides from the block which are deparaffinized and rehydrated through graded alcohol, where applicable. Antigen retrieval will be accomplished by microwaving in citrate buffer from 5 to 7 minutes for the Ki-67 and MVD analysis. Mean difference in %apoptosis (measured as %TUNEL positive cells per high powered field) between pre and post treatment will be reported.
Baseline and 4 weeks
Change in Proliferation Indices Before and After Treatment
Zeitfenster: Baseline and 4 weeks
Pathologic changes will be described using immuno-histochemical techniques (assessment of apoptotic/proliferative indices and microvessel density (MVD)) using paraffin-embedded samples and freshly cut slides from the block which are deparaffinized and rehydrated through graded alcohol, where applicable. Antigen retrieval will be accomplished by microwaving in citrate buffer from 5 to 7 minutes for the Ki-67 and MVD analysis. Mean difference in %proliferation (Ki67 positive nuclei out of total nuclei) between pre and post treatment will be reported.
Baseline and 4 weeks

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Number of Patients Experiencing Grade ≥4 Hematologic or Grade ≥3 Non-hematologic Toxicity
Zeitfenster: 4 years
Adverse events were collected using Common Terminology Criteria for Adverse Events (CTCAE) version 3.0 and were converted to version 4.0 for the purposes of ClinicalTrials.gov reporting.
4 years
Change in Pathologic (Microvessel Density).
Zeitfenster: Baseline and 4 weeks
Pathologic changes will be described using immuno-histochemical techniques (assessment of microvessel density (MVD)) using paraffin-embedded samples and freshly cut slides from the block which are deparaffinized and rehydrated through graded alcohol, where applicable. Antigen retrieval will be accomplished by microwaving in citrate buffer from 5 to 7 minutes for the MVD analysis. Results are reported as the difference in pre and post MVD. Units for MVD are number of CD31 cells per high powered field.
Baseline and 4 weeks
Change in Systemic Parameters Before and After Sunitinib Malate Treatment.
Zeitfenster: Baseline and 4 weeks
We evaluated candidate biomarkers of this pathway to predict for pharmacodynamic response to Sunitinib malate. In addition, a 7 ml plasma sample was collected at baseline and again at 4 weeks on all patients to assess possible biomarkers of response. Reported is the mean percent change in plasma concentration for each marker between 4 weeks and baseline.
Baseline and 4 weeks
Protein Levels and Activation Status of PDGFR in Prostate Cancer Tissue.
Zeitfenster: 4 years
We will perform immunohistochemistry staining on snap frozen specimens for endothelial and pericyte cell staining as previously described (42). Frozen prostate tumor biopsies are sectioned at 6μm thickness and fixed with acetone for 10 minutes. Endogenous peroxidase activity is quenched with 3% hydrogen peroxide for 15 min and then blocked with 5% normal serum. The slides are incubated with the primary antibody (1;100) overnight at 4 C°, and washed with PBS. Negative controls will be included by omission of the primary antibody. Biotinylated donkey antimouse antibody (1:1000, v/v) will be applied for 30 min at room temperature, followed by application of ABC kit (Vector Lab, Inc., Burlingame, USA). Slides are again washed in PBS and the color is developed by 5 min incubation with diaminobenzidine (DAB) solution. Slides are then counterstained with hematoxylin. Mean protein levels are presented.
4 years
Difference in Gene Expression Patterns Using Microarray Analysis
Zeitfenster: 4 years
Microarray data of 21 specimens from men enrolled who have undergone a prostatectomy and study treatment were compared to data from 21 prostatectomy only specimens. We used previously developed genomic signatures to measure the deregulation of oncogenic pathways built using Bayesian Probit models for 'metagene' factors from a singular value decomposition of top differentially expressed genes. A Monte Carlo Markov Chain was used to generate the predicted probabilities of pathway activity in normalized samples. We predicted the activity of these pathways, leading to the generation of probability measures that have previously reflected the state of pathway activity. These probability scores are interpreted as gene expression values to describe pathway activity patterns. A probability near 0 indicates a low chance of pathway activity; a probability near 1 indicates a higher likelihood of activity. Differences (treatment - control) in mean probability for each pathway are reported.
4 years
Interstitial Fluid Pressure (IFP)
Zeitfenster: 4 years
Measure Interstitial fluid pressure (IFP) pre-treatment and during treatment to indirectly measure the effect of Sunitinib malate on transcapillary transport and correlate with other biologic evidence of treatment effect.Eligible patients who sign consent will undergo a baseline transrectal ultrasound (TRUS)-guided measurement of tumor IFP. Participants will then begin treatment with daily oral Sunitinib malate with biweekly monitoring for response and toxicity. After 4 weeks of therapy, patients undergo a repeat TRUS and tumor IFP measurement. Following a 1 to 2 week wash out period, patients undergo prostatectomy with pathologic tissue collection. This will be performed as a means to evaluate whether Sunitinib malate has the ability to decrease tumor IFP, and whether this correlates with other tr
4 years

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Duke University

Mitarbeiter

Pfizer

Ermittler

  • Hauptermittler: Daniel J George, MD, Duke University

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn

1. Juli 2006

Primärer Abschluss (Tatsächlich)

1. September 2012

Studienabschluss (Tatsächlich)

1. September 2013

Studienanmeldedaten

Zuerst eingereicht

4. Mai 2008

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

4. Mai 2008

Zuerst gepostet (Schätzen)

6. Mai 2008

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Schätzen)

4. August 2014

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

31. Juli 2014

Zuletzt verifiziert

1. Mai 2014

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • Pro00007396
  • DUMC-8725 (Andere Kennung: Duke legacy protocol number)

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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