Recurrent Respiratory Papillomatosis Clinical Trial
Official title:
A Multicentered Randomized Study of Celebrex (Celecoxib) in Patients With Recurrent Respiratory Papillomatosis
This is a randomized double blind controlled study to determine if celebrex (celecoxib), a selective COX-2 inhibitor, can decrease the rate of recurrence in adult and pediatric patients with recurrent respiratory papillomatosis. All patients will be evaluated for disease severity at enrollment and at 3 month intervals for 30 months. After randomization, patients in the early treatment arm will begin celecoxib 6 months after enrollment. The delayed treatment arm will begin celecoxib 18 months after enrollment. All patients will receive celecoxib for 1 year. During the time that patients do no receive celecoxib, they will receive a placebo capsule with the same appearance. Follow-up visits will occur at three month intervals for the duration of the study.
This is a randomized double blind placebo-controlled study,with plans to include 5
additional U.S. centers in the near future. The primary goal of this study is to determine
whether celecoxib has efficacy in elimination or reduction of recurrent disease in patients
with RRP. Our secondary goals are to determine whether continued celecoxib is required to
maintain response, to correlate response with select patient demographics and persistence of
latent HPV DNA, and to determine whether celecoxib is acting through inhibition of COX-2, in
order to begin to determine mechanism of effects in vivo on RRP. The study design
encompasses a 30-month period, which can be divided into three segments:
Segment A: This is a 6 month run-in period in which all patients are assessed by direct
laryngoscopy/bronchoscopy for disease severity, to permit growth rate stabilization and
confirm accuracy of training of participating physicians. Patients will be treated by
conventional surgery at three months and six months after enrollment.
Segment B: Patients begin 12 months of 400mg(adults), 100 mg (pediatric weight between 12
and 25 kg)or 200 mg (pediatric weight > 25kg) celecoxib daily or placebo treatment in
addition to surgical removal of all papillomas at each 3 month interval. This segment
directly tests the hypothesis that celecoxib is an efficacious treatment for moderate to
severe RRP and forms the basis for the primary statistical analyses.
Segment C: The primary purpose of this segment is to determine whether gains made during
celecoxib therapy are maintained after it is discontinued, or whether celecoxib will need to
be taken indefinitely. This will be determined by a 12 month period on placebo after
cessation of celecoxib for the early treatment group.
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Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
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