Dataset Information

Cardiovascular risk of celecoxib in 6 randomized placebo-controlled trials: the cross trial safety analysis.

ABSTRACT:

Background

Observational studies and randomized trials have reported increased cardiovascular risk associated with cyclooxygenase-2 inhibitors. Prior placebo-controlled randomized studies had limited ability to assess the relationship of either celecoxib dose or pretreatment cardiovascular status to risk associated with celecoxib. Our aim was to assess the cardiovascular risk associated with celecoxib in 3 dose regimens and to assess the relationship between baseline cardiovascular risk and effect of celecoxib on cardiovascular events.

Methods and results

We performed a patient-level pooled analysis of adjudicated data from 7950 patients in 6 placebo-controlled trials comparing celecoxib with placebo for conditions other than arthritis with a planned follow-up of at least 3 years. Patients were administered celecoxib in 3 dose regimens: 400 mg QD, 200 mg BID, or 400 mg BID. From the pooled data, we calculated a hazard ratio for all dose regimens combined and individual hazard ratios for each dose regimen and examined whether celecoxib-related risk was associated with baseline cardiovascular risk. The primary end point was the combination of cardiovascular death, myocardial infarction, stroke, heart failure, or thromboembolic event. With 16,070 patient-years of follow-up, the hazard ratio for the composite end point combining the tested doses was 1.6 (95% CI, 1.1 to 2.3). The risk, which increased with dose regimen (P=0.0005), was lowest for the 400-mg-QD dose (hazard ratio, 1.1; 95% CI, 0.6 to 2.0), intermediate for the 200-mg-BID dose (hazard ratio, 1.8; 95% CI, 1.1 to 3.1), and highest for the 400-mg-BID dose (hazard ratio, 3.1; 95% CI, 1.5 to 6.1). Patients at highest baseline risk demonstrated disproportionately greater risk of celecoxib-related adverse events (P for interaction=0.034).

Conclusions

We observed evidence of differential cardiovascular risk as a function of celecoxib dose regimen and baseline cardiovascular risk. By further clarifying the extent of celecoxib-related cardiovascular risk, these findings may help guide treatment decisions for patients who derive clinical benefit from selective cyclooxygenase-2 inhibition.

SUBMITTER: Solomon SD

PROVIDER: S-EPMC2965408 | biostudies-literature |

REPOSITORIES: biostudies-literature

ACCESS DATA

Similar Datasets

Project description:Preclinical studies indicate that the enzyme cyclooxygenase 2 plays an important role in ultraviolet-induced skin cancers. We evaluated the efficacy and safety of celecoxib, a cyclooxygenase 2 inhibitor, as a chemopreventive agent for actinic keratoses, the premalignant precursor of nonmelanoma skin cancers, and for nonmelanoma skin cancers, including cutaneous squamous cell carcinomas (SCCs) and basal cell carcinomas (BCCs).A double-blind placebo-controlled randomized trial involving 240 subjects aged 37-87 years with 10-40 actinic keratoses was conducted at eight US academic medical centers. Patients were randomly assigned to receive 200 mg of celecoxib or placebo administered orally twice daily for 9 months. Subjects were evaluated at 3, 6, 9 (ie, completion of treatment), and 11 months after randomization. The primary endpoint was the number of new actinic keratoses at the 9-month visit as a percentage of the number at the time of randomization. In an intent-to-treat analysis, the incidence of actinic keratoses was compared between the two groups using t tests. In exploratory analyses, we evaluated the number of nonmelanoma skin cancers combined and SCCs and BCCs separately per patient at 11 months after randomization using Poisson regression, after adjustment for patient characteristics and time on study. The numbers of adverse events in the two treatment arms were compared using ?(2) or Fisher exact tests. All statistical tests were two-sided.There was no difference in the incidence of actinic keratoses between the two groups at 9 months after randomization. However, at 11 months after randomization, there were fewer nonmelanoma skin cancers in the celecoxib arm than in the placebo arm (mean cumulative tumor number per patient 0.14 vs 0.35; rate ratio [RR] = .43, 95% confidence interval [CI] = 0.24 to 0.75; P = .003). After adjusting for age, sex, Fitzpatrick skin type, history of actinic keratosis at randomization, nonmelanoma skin cancer history, and patient time on study, the number of nonmelanoma skin cancers was lower in the celecoxib arm than in the placebo arm (RR = 0.41, 95% CI = 0.23 to 0.72, P = .002) as were the numbers of BCCs (RR = 0.40, 95% CI = 0.18 to 0.93, P = .032) and SCCs (RR = 0.42, 95% CI = 0.19 to 0.93, P = .032). Serious and cardiovascular adverse events were similar in the two groups.Celecoxib may be effective for prevention of SCCs and BCCs in individuals who have extensive actinic damage and are at high risk for development of nonmelanoma skin cancers.

Project description:BackgroundNonsteroidal anti-inflammatory drugs are widely used for migraine, but gastrointestinal tolerability limits use. We previously reported results from the first treatment period of this 2-period, randomized, controlled study comparing DFN-15-an oral, ready-made liquid solution of a selective cyclo-oxygenase-2 inhibitor celecoxib-with placebo for the acute treatment of a moderate-severe migraine attack. Herein, we report the effects of treatment for the second treatment period.MethodsIn the first treatment period of this trial, adults with migraine were randomized to double-blind trial treatment of attacks of moderate or severe pain with DFN-15,120 mg or placebo. For the second treatment period, reported herein, participants were re-randomized to treat an attack of any baseline pain intensity (mild, moderate, or severe). Co-primary efficacy endpoints specified for the first attack were not specified for the second attack.ResultsOf the 531 patients who completed the first treatment period, 491 (n = 243 DFN-15; n = 248 placebo; 87% female, mean age 41 years) were re-randomized into the second double-blind treatment period. Baseline pain intensity was mild in 17.2% (85/493) of patients, moderate in 58.4% (288/493) of patients, and severe in 22.9% (113/493) of patients. At 2 hours post-dose, DFN-15 was superior to placebo for freedom from pain (46.2% [110/238] vs 31.1% [76/244], p ≤ 0.001) and the most bothersome symptom (63.4% [121/191] vs 50.0% [98/196], p = 0.010). Treatment-emergent adverse events (TEAEs) occurred in 7.1% (35/493) of patients (DFN-15: 6.1% [15/244]; placebo 8.0% [20/249]). Study drug-related TEAEs occurred in 5.1% (25/493) of patients (DFN-15: 4.5% [11/244]; placebo 5.6% [14/249]); nausea (1% [5/493]) and dysgeusia (0.8% [4/493]) were most common. No serious TEAEs, severe TEAEs, or TEAEs leading to study drug termination were reported.ConclusionsDFN-15 was superior to placebo for pain freedom and freedom from the most bothersome symptom when patients treat a migraine attack of any baseline pain intensity. Rates of TEAEs did not differ between treatment groups.