- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica 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
Panoramica dello studio
Descrizione dettagliata
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.
Tipo di studio
Iscrizione (Effettivo)
Fase
- Fase 2
Contatti e Sedi
Luoghi di studio
-
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Florida
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West Palm Beach, Florida, Stati Uniti, 33401
- Palm Beach Cancer Center Institute
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North Carolina
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Charlotte, North Carolina, Stati Uniti, 28204
- Presbyterian Health Care
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Durham, North Carolina, Stati Uniti, 27710
- Duke University Medical Center
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
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
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: Non randomizzato
- Modello interventistico: Assegnazione di gruppo singolo
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
|
Sperimentale: 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.
Altri nomi:
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Estimation of the Proportion of Progression-free Patients at 16 Wks.
Lasso di tempo: 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
|
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
To Measure Response to Protocol Therapy Per RECIST Criteria
Lasso di tempo: 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)
Lasso di tempo: 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
|
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Correlate SRC Dysregulation Results With Response to Dasatinib Therapy
Lasso di tempo: 16 weeks
|
Since all patients progressed there is no comparison to between responders and non-responders.
|
16 weeks
|
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To Explore the Association Between Each Patient's SRC Signature and Their Time to Progression.
Lasso di tempo: Baseline Src measure to first progression
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Spearman's correlation between the change in SRC signature from baseline to 4 weeks and time to progression
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Baseline Src measure to first progression
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To Explore the Association Between Dasatinib and Osteoclastic Bone Resorption
Lasso di tempo: not assessed
|
Not assessed secondary to limited number of subjects.
|
not assessed
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Collaboratori e investigatori
Sponsor
Collaboratori
Investigatori
- Investigatore principale: Kimberly Blackwell, MD, Duke University
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- Pro00007578
- BMS CA180089
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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