Celecoxib in Treating Patients With Early-Stage Rectal Cancer
Pilot COX-2 Activity in Early Stage Rectal Cancer -Short Term Administration of Celecoxib (SPORE)
RATIONALE: Studying samples of tissue, blood, and urine from patients with cancer in the laboratory may help doctors learn more about changes that may occur in DNA and identify biomarkers related to cancer. It may also help doctors predict how rectal cancer will respond to treatment with celecoxib.
PURPOSE: This clinical trial is studying how well celecoxib works in treating patients with early-stage rectal cancer.
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
- Altro: spettrometria di massa
- Altro: metodo di colorazione immunoistochimica
- Altro: analisi di laboratorio dei biomarcatori
- Droga: celecoxib
- Genetico: gene expression analysis
- Genetico: protein expression analysis
- Procedura: biopsy
- Procedura: neoadjuvant therapy
- Procedura: therapeutic conventional surgery
Descrizione dettagliata
OBJECTIVES:
- Determine cyclooxygenase-2 (COX-2) over-expression in tumor specimens from patients with early-stage rectal cancer.
- Determine whether administration of a COX-2 inhibitor, celecoxib, results in changes in tumor (COX-2 overexpressing) levels of eicosanoids but not in levels in the surrounding normal tissue that is expected not to express COX-2.
- Determine whether surrogate markers of eicosanoid metabolism (i.e., serum VEGF levels, tumor prostaglandin E_2 [PGE_2], and the major urinary metabolite of PGE_2 [PGE-M]) in biological specimens from these patients correlate with changes noted in tumor tissue.
- Determine if there is a greater change in protein and gene expression from pretreatment biopsy levels in patient tumor specimens (COX-2 overexpressing) vs specimens of surrounding normal tissue (expected not to be COX-2 overexpressing).
OUTLINE: Patients receive oral celecoxib twice daily on days 1-5. Patients then undergo planned local excision or definitive radical resection on day 6.
Tumor tissue and normal tissue (at least 5 cm away from the tumor) samples are collected pretreatment. Post-treatment tissue samples are collected along with the surgery. Serum and urine samples are obtained at baseline and after administration of celecoxib. Tumor and normal tissue specimens are analyzed by assays measuring markers of cyclooxygenase-2 (COX-2) activity (i.e., COX-2 mRNA and protein, tumor prostaglandin E_2 [PGE_2], and VEGF). Tissue samples are also assessed by cDNA microarray and imaging mass spectrometry to determine overall changes in gene and protein expression from pretreatment levels. Surrogate markers of COX-2 activity in serum (i.e., VEGF) and urine (i.e., urinary metabolite of PGE_2 [PGE-M]) are also assessed and compared with changes noted in tumor tissue. COX-2 protein levels are determined by immunohistochemistry in patients with limited pretreatment tumor tissue specimens.
Tipo di studio
Iscrizione (Effettivo)
Fase
- Non applicabile
Contatti e Sedi
Luoghi di studio
-
-
Tennessee
-
Nashville, Tennessee, Stati Uniti, 37232
- Vanderbilt-Ingram Cancer Center
-
Nashville, Tennessee, Stati Uniti, 37212
- Veterans Administration
-
-
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
Clinical diagnosis of primary adenocarcinoma of the rectum (to be histologically confirmed upon study entry)
- Tumor must be at or below the peritoneal reflection
- The distal border of the tumor is within 12 cm of the anal verge on proctoscopic examination
- Clinically resectable disease
PATIENT CHARACTERISTICS:
- Karnofsky performance status 60-100%
- WBC ≥ 4,000/mm³
- Platelet count ≥ 150,000/mm³
- Not pregnant or nursing
- Negative pregnancy test
- Fertile patients must use effective contraception
- No other serious medical illness (other than rectal cancer) that would preclude study therapy
- No psychiatric condition that would preclude informed consent
- No history of allergy to celecoxib or any other NSAIDs, including acetylsalicylic acid (i.e., aspirin), ibuprofen, or indomethacin
- No history of allergy to sulfonamides
Exclusion criteria:
Not noted
PRIOR CONCURRENT THERAPY:
- At least 7 days since prior and no concurrent NSAIDs or other cyclooxygenase-2 inhibitors
- No concurrent warfarin, except low-dose warfarin (i.e., 1 mg/day) administered for prophylaxis
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: N / A
- Modello interventistico: Assegnazione di gruppo singolo
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
|
Sperimentale: Therapeutic Intervention/Celecoxib
Celecoxib
|
non notato
non notato
Will be administered orally 400 mg po BID starting 5 days prior to planned surgical resection.
Altri nomi:
not noted
Not noted
At the time of preoperative evaluation by surgeon as well as one week after administration of Celecoxib.
not noted
not noted
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Lasso di tempo |
|---|---|
|
Event rate of over-expression of cyclooxygenase-2
Lasso di tempo: Pre and post 7 days administration of study drug
|
Pre and post 7 days administration of study drug
|
|
Percent change of eicosanoid level
Lasso di tempo: Pre and post celecoxib treatment ratio of eicosanoid production
|
Pre and post celecoxib treatment ratio of eicosanoid production
|
|
Percent change of VEGF and prostaglandin-M levels
Lasso di tempo: Pre and post celecoxib treatment VEGF and PGE-M levels
|
Pre and post celecoxib treatment VEGF and PGE-M levels
|
|
Change of gene and protein expression pattern from pre- to post-treatment levels
Lasso di tempo: Pre and post celecoxib treatment
|
Pre and post celecoxib treatment
|
Collaboratori e investigatori
Sponsor
Collaboratori
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
- Malattie dell'apparato digerente
- Neoplasie
- Neoplasie per sede
- Neoplasie gastrointestinali
- Neoplasie dell'apparato digerente
- Malattie gastrointestinali
- Malattie intestinali
- Neoplasie intestinali
- Malattie del retto
- Neoplasie colorettali
- Neoplasie Rettali
- Effetti fisiologici delle droghe
- Meccanismi molecolari dell'azione farmacologica
- Agenti del sistema nervoso periferico
- Inibitori enzimatici
- Analgesici
- Agenti del sistema sensoriale
- Agenti antinfiammatori, non steroidei
- Analgesici, non narcotici
- Agenti antinfiammatori
- Agenti antireumatici
- Inibitori della ciclossigenasi
- Inibitori della cicloossigenasi 2
- Celecoxib
Altri numeri di identificazione dello studio
- VICC GI 0174
- VU-VICC-GI-0174
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 .