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FDA advises about potential attenuation of anti-platelet effect of low-dose aspirin with concomitant use of ibuprofen

FDA recently released an information sheet advising healthcare professionals about a potential pharmacodynamic interaction between low-dose aspirin (81 mg/d) and ibuprofen 400 mg when they are dosed concomitantly. This interaction may attenuate aspirin's anti-platelet cardioprotective effect in patients taking aspirin for secondary prevention of myocardial infarction.

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FDA Actions in Brief

FDA granted 2 additional indications for rituximab (Rituxan, Genentech/Biogen Idec) in the treatment of patients with CD-20-positive, B-cell non-Hodgkin's lymphoma (NHL). The agent is now approved as first-line treatment of previously untreated patients with follicular NHL in combination with cyclophosphamide, vincristine, and prednisolone (CVP) chemotherapy, and in the treatment of patients with low-grade NHL with stable disease, or in those with partial or complete response following first-line treatment with CVP chemotherapy.

Infliximab

Infliximab acts through the inhibition of tumor necrosis factor (TNF)-alpha, which is responsible for the induction of inflammatory cytokines, the enhancement of leukocyte migration, and the activation of neutrophil and eosinophil functional activity. Infliximab was approved on September 27, 2006, for the treatment of adult patients with chronic severe (ie, extensive and/or disabling) plaque psoriasis who are candidates for systemic therapy and when other systemic therapies are medically less appropriate.

Vorinostat

This agent targets the overexpression of histone deacetylase (HDAC) or the aberrant recruitment of HDACs to oncogenic transcription factors in cancer cells. Vorinostat was approved on October 6, 2006, for the treatment of cutaneous manifestations in patients with cutaneous T-cell lymphoma (CTCL) who have progressive, persistent, or recurrent disease following 2 systemic therapies.

Less CABG bleeding observed with enoxaparin compared with unfractionated heparin after PCI

A 0.5-mg/kg dose of a low molecular weight heparin, enoxaparin, resulted in less non-coronary-artery bypass grafting (CABG) bleeding compared with unfractionated heparin in the first 48 hours after elective percutaneous coronary intervention (PCI), according to a prospective, open-label, multicenter, randomized trial reported in the New England Journal of Medicine.

High-dose statin therapy displays benefit in preventing cardiovascular events compared with standard doses

Intensive lipid lowering with high-dose 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (statins) provides a significant benefit over standard-dose statin therapy in preventing nonfatal cardiovascular outcomes and also may reduce the incidence of cardiovascular death, according to results of a meta-analysis published in the Journal of the American College of Cardiology.

High-dose statin therapy displays benefit in preventing cardiovascular events compared with standard doses

Intensive lipid lowering with high-dose 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (statins) provides a significant benefit over standard-dose statin therapy in preventing nonfatal cardiovascular outcomes and also may reduce the incidence of cardiovascular death, according to results of a meta-analysis published in the Journal of the American College of Cardiology.

Infliximab

TNF inhibitor approved for inhibiting joint damage, improving physical function in psoriatic arthritis

Von Eschenbach closer to approval as FDA head; CMS Administrator McClellan departing

Although acting FDA Commissioner Andrew von Eschenbach, MD, has been on the job since September 2005, it was only last month that he received approval from the Senate's Health, Education, Labor and Pension (HELP) committee for his nomination as FDA commissioner to be considered by the full Senate. However, the step was an incremental one at best for Dr von Eschenbach and the agency, which has been without an officially appointed commissioner for all but 18 months over the past 5? years.

Isotretinoin may trigger IBD in subgroup of patients

A review of adverse event data associated with the synthetic vitamin A retinoid isotretinoin between 1997 and 2002 suggests that the acne treatment is a "probable" cause of inflammatory bowel disease (IBD) and may precipitate its presentation within a certain subset of patients who are either predisposed to the disease or have subclinical symptoms.

Topical calcipotriol/betamethasone dipropionate achieves quicker response against psoriasis compared with biological therapies

An ointment containing calcipotriol (50mcg/g) plus betamethasone diproprionate (0.5mg/g) demonstrated significant efficacy against psoriasis within 4 weeks compared with 12 weeks of biological therapy, regardless of disease severity, as measured by the Psoriasis Area and Severity Index (PASI), according to a meta-analysis recently reported in the International Journal of Dermatology.

Atorvastatin demonstrates reduction of stroke incidence in patients experiencing recent stroke or TIA

Atorvastatin reduced the overall incidence of strokes and cardiovascular events in patients without known coronary disease who had recently experienced a stroke or a transient ischemic attack (TIA), according to a randomized, placebo-controlled, double-blind study of 4,731 patients. Results from the Stroke Prevention by Aggressive Reduction in Cholesterol Levels (SPARCL) study, however, also demonstrated an increase in the incidence of hemorrhagic strokes among those receiving atorvastatin compared with placebo.

Effect of a medication assistance program on clinical outcomes in patients with diabetes

Approximately 17 million people in the United States have type 2 diabetes, and the prevalence continues to rise.1 More than 45% of patients with end-stage renal disease have type 2 diabetes as an etiology, and a patient with type 2 diabetes has the same risk of developing an acute coronary syndrome (unstable angina, myocardial infarction [MI]) over the next 10 years as someone who has had an acute coronary syndrome in the past.2 In addition to these complications, type 2 diabetes also increases the risk of blindness, neuropathy, and amputation.3

Drug-eluting stents: Emerging efficacy and safety data and clinical considerations

Drug-eluting stents (DES) represent an innovative application of pharmaceutical technology that has piqued the interest of hospital and managed care decision-makers. Since their introduction to the US market in 2004, the sirolimus- and paclitaxel-eluting stents have featured drugs employing different mechanisms of action to reduce the risk of restenosis following percutaneous coronary intervention (PCI) in an attempt to improve cardiovascular outcomes.

Vildagliptin: A dipeptidyl peptidase-IV inhibitor for the treatment of type 2 diabetes

Despite the variety of medications available to treat type 2 diabetes, the disease is inadequately controlled in many patients. In order to improve glycemic control, manufacturers are pursuing compounds that affect the incretin hormones that stimulate insulin release in response to increased glucose levels. Although stimulation of the incretin receptors by the glucagon-like peptide-1 (GLP-1) enhances the body's ability to produce insulin in response to elevated blood glucose concentrations, the clinical usefulness of GLP-1 is limited by its rapid degradation by dipeptidyl peptidase-IV (DPP-IV). Drug companies have developed compounds intended to act as inhibitors of DPP-IV. Vildagliptin (Galvus, Novartis) is the second DPP-IV inhibitor under investigation by FDA to offer this new mechanism to achieve glycemic control. An NDA for vildagliptin was submitted to FDA in March 2006, 1 month after the submission of the first DPP-IV inhibitor, sitagliptin.

Pipeline Preview (October 2006)

Dalteparin (Fragmin, Pfizer) for the extended treatment of symptomatic venous thromboembolism (proximal deep vein thrombosis and/or pulmonary embolus) to prevent recurrent venous thromboembolism in patients with cancer