FDA Advisory Committee Recommends Approval of PEGINTRON(R) for the Adjuvant Treatment of Stage III Malignan...(regnant the patient should be apprised o...),Health

Date:10/5/2009

regnant, the patient should be apprised of the potential hazard to a fetus. A Ribavirin Pregnancy Registry has been established to monitor maternal-fetal outcomes of pregnancies in female patients and female partners of male patients exposed to ribavirin during treatment, and for 6 months following cessation of treatment. Physicians and patients are encouraged to report such cases by calling 1-800-593-2214.

Incidence of Adverse Events

Most common adverse reactions (>40%) in adult patients receiving either PEGINTRON or PEGINTRON/REBETOL are injection site inflammation/reaction, fatigue/asthenia, headache, rigors, fevers, nausea, myalgia, and anxiety/emotional lability/irritability. Most common adverse reactions (>25%) in pediatric patients receiving PEGINTRON/REBETOL are pyrexia, headache, neutropenia, fatigue, anorexia, injection site erythema, and vomiting.

In a study with PEGINTRON/REBETOL (weight-based) combination therapy in adult patients, anemia with weight-based dosing was 29%; however, the majority of these cases were mild and responded to dose reductions. The incidence of serious adverse reactions reported for the weight-based REBETOL group was 12%. In many but not all cases, adverse reactions resolved after dose reduction or discontinuation of therapy. Some patients experienced ongoing or new serious adverse reactions during the 6-month follow-up period. Discontinuations for adverse events were 15% and were related to known interferon effects of psychiatric, systemic (eg, fatigue, headache), or gastrointestinal adverse reactions. Dose modifications due to adverse reactions occurred in 29% of patients.

Most common adverse reactions with PEGINTRON/REBETOL (weight-based) combination therapy were psychiatric, which occurred among 68-69% of patients. These psychiatric adverse reactions included most commonly depression, irritability, and insomnia, each reported by approximately 30-40% of subjects
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SOURCE Schering-Plough Corp. Copyright©2009 PR Newswire. All rights reserved

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