- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT00546104
Phase II Dasatinib Study in Advanced Breast Cancer
A Phase II Trial of Dasatinib to Treat Women With Stage IV or Inoperable Stage III Advanced Breast Cancer
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
The introduction of biologics with specific molecular targets has initiated a trend toward improved survival in women with metastatic breast cancer.
The tyrosine kinase SRC (pp60src) is a member of a family of proteins that contribute to cellular signal transduction activities such as cell growth, differentiation, survival, adhesion and migration. Abnormal signaling has been linked to cancer metastases; thus, identification of molecular regulators or inhibitors of SRC present therapeutic opportunity for cancer patients. Src kinases consist of eight non-receptor tyrosine kinases (Src, Fyn, Yes, Lck, Lyn, Hck, Fgr and Blk) that interact with the intracellular domains of growth factor/cytokine receptors, (G-protein-coupled receptor)GPCRs and integrins.
Inhibition of SRC has also been associated with reversal of chemoresistance and restored sensitivity to drug-resistant ovarian cancer cells, suggesting potential as second- line treatment for previously treated populations. Dasatinib is a potent, broad spectrum inhibitor of 5 critical oncogenic tyrosine kinases, including SRC.
Patients will receive dasatinib, a Src inhibitor, at an initial dose of 50 mg PO BID, with real-time PharmacoDynamic dose adjustment following 4 weeks of therapy based on inhibition of phosphorylation of SRC, focal adhesion kinase (FAK) and paxillin, until progression. The primary objective is to assess tolerability and estimate the proportion of patients who are progression-free at 16 weeks from the date of study enrollment.
A minimum of 2 (maximum of 3) tumor biopsies will be analyzed and compared for SRC signature: one at baseline (study enrollment, all patients); the second after 4 weeks of dasatinib therapy (all patients); and the third at progression (only patients who progress after a documented response).
Patients will receive continuous daily administration until documented disease progression, and will be followed until death.
The results of this study may be useful in designing future studies using dasatinib alone or in combination with chemotherapy, thus having the potential to alter the current standard of care in this incurable population.
Additional correlative studies will be conducted. Tumor biopsies will be analyzed and compared for SRC, pSRC, Ki67, and related genomic signatures.
Studientyp
Einschreibung (Tatsächlich)
Phase
- Phase 2
Kontakte und Standorte
Studienorte
-
-
Florida
-
West Palm Beach, Florida, Vereinigte Staaten, 33401
- Palm Beach Cancer Center Institute
-
-
North Carolina
-
Charlotte, North Carolina, Vereinigte Staaten, 28204
- Presbyterian Health Care
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Durham, North Carolina, Vereinigte Staaten, 27710
- Duke University Medical Center
-
-
Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- Measurable Stage IV or inoperable Stage III advanced breast cancer.
- There is no limit on the number of prior therapies.
- At least 3 weeks since prior chemotherapy, biological or hormonal therapy.
- At least 2 weeks since surgical biopsy.
- At least 3 weeks since major (open thoracic/abdominal/cardiac) surgery.
- No central nervous system (CNS) metastases except solitary brain metastasis
- No cardiac dysfunction
- left ventricular ejection fraction (LVEF) ≥ 50% as determined by multiple gated acquisition scan (MUGA)/echocardiogram
- Adequate blood counts
- Normal liver and kidney function
- Negative serum pregnancy test.
- Able to provide informed consent
Exclusion Criteria:
- Pregnant or breast feeding.
- Prior treatment with dasatinib.
- Bone as the only site of disease.
- Significant gastrointestinal bleeding
- Septicemia, infection, acute hepatitis, hypokalemia, or hypomagnesemia
Studienplan
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: Dasatinib
50- 100 mg PO BID
|
An initial dose of 50 mg PO BID; following 4 weeks of treatment, dose adjustment will be based on inhibition of phosphorylation of FAK and paxillin per biopsy assessment, as well as toxicity assessment.
Andere Namen:
|
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Estimation of the Proportion of Progression-free Patients at 16 Wks.
Zeitfenster: 16 weeks
|
Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0), as a 20% increase in the sum of the longest diameter of target lesions, or measurable increase in a non-target lesion, or the appearance of new lesions, or similar definition as appropriate. Proportion progression-free at 16 weeks.From first day of study related treatment with Dasatinib until the date of first documented progression or date of death from any cause, whichever came first. |
16 weeks
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
To Measure Response to Protocol Therapy Per RECIST Criteria
Zeitfenster: 16 weeks
|
Per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions and assessed by CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), >=30% decrease in the sum of the longest diameter of target lesions; Progression At least a 20% increase in the sum of the longest diameter (LD) of target lesions taking as a reference the smallest sum longest diameter recorded since treatment started, or the appearance of one or more new lesions. RECIST 1.0 Overall response: Complete Response (CR) Partial Response (PR) Stable Disease (SD) Progressive Disease (PD) CR= CR+CR and No new lesions PR= CR+SD; PR+SD and no new lesions SD= SD+SD and no new lesions PD= PD+any new lesions |
16 weeks
|
|
Characterization and Comparison of SRC (A Protein Tyrosine Kinase)Dysregulation at Baseline (All Patients), After 4 Weeks of Dasatinib Treatment (All Patients), and at Progression (Only Patients Who Progress After Documented Response)
Zeitfenster: 4 weeks
|
For the 20 patients with evaluable biopsies at baseline and week 4, the median relative change from baseline in tissue biomarker levels of phospho-Src (p-Src)
|
4 weeks
|
|
Correlate SRC Dysregulation Results With Response to Dasatinib Therapy
Zeitfenster: 16 weeks
|
Since all patients progressed there is no comparison to between responders and non-responders.
|
16 weeks
|
|
To Explore the Association Between Each Patient's SRC Signature and Their Time to Progression.
Zeitfenster: Baseline Src measure to first progression
|
Spearman's correlation between the change in SRC signature from baseline to 4 weeks and time to progression
|
Baseline Src measure to first progression
|
|
To Explore the Association Between Dasatinib and Osteoclastic Bone Resorption
Zeitfenster: not assessed
|
Not assessed secondary to limited number of subjects.
|
not assessed
|
Mitarbeiter und Ermittler
Sponsor
Mitarbeiter
Ermittler
- Hauptermittler: Kimberly Blackwell, MD, Duke University
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- Pro00007578
- BMS CA180089
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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