Documented tuberculin skin testing among infliximab users following a multi-modal risk communication interventions

Implementation of risk minimization measures to reduce the risk of tuberculosis among tumor necrosis factor medication users

PURPOSE

To examine the adherence to risk minimization measures (RMMs) in newly treated patients with anti-tumor necrosis factor-alpha (anti-TNF-α) medications at one of the largest tertiary care hospitals in Saudi Arabia.

METHODS

We included patients who had at least one prescription of infliximab or adalimumab. The index date was the first recorded date of infliximab or adalimumab prescription. New users of anti-TNF-α were divided into pre- and post-RMM implementation groups. The outcome of interest was the proportion of patients that received tuberculosis (TB) screening, including a chest X-ray (CXR) or a QuantiFERON test within 1 month prior to the index date.

RESULTS

A pre-post RMM implementation comparison of TB screening among infliximab users showed a significant increase in the rates of CXR tests (from 7.5% before RMM implementation to 13.8% after RMM implementation, p < 0.001) and the rates of QuantiFERON tests (4.5% before RMM implementation to 24.1% after RMM implementation, p < 0.001). RMMs were introduced to the study site at the same time as adalimumab was approved and the proportion of patients receiving TB screening was 25.2%.

CONCLUSION

TB screening prior to initiation of infliximab or adalimumab was not optimal. However, we noted an improvement in TB screening after the implementation of RMMs for infliximab. Future research may address reasons for low adherence to testing requirements for TB prior to initiation of anti-TNF-α medications.

Do drug-related safety warnings have the expected impact on drug therapy? A systematic review

PURPOSE

The need for drug-related safety warnings is undisputed, and their impact should also be evaluated. This systematic review investigates and assesses the impact of safety warnings on drug therapy.

METHODS

Studies published in English between January 1998 and December 2018 were searched in EMBASE and MEDLINE, complemented by manual search. Randomised controlled trials, cohort studies with a before/after component, and case-control studies were included, selected to predefined criteria, and assessed for their reporting and methodological quality.

RESULTS

Out of 7454 references identified, 72 studies were included. A total of 28/72 (39%) studies described the impact of safety warnings on drug therapy as being effective, whereas 12/72 (17%) studies did not. Further, 26/72 (36%) studies described a partial implementation of the warnings (one part of the warning had an impact on drug therapy and another did not). Unintended effects were investigated in 6/72 (8%) studies. While 34 (47%) studies examined safety warnings on psychotropic drugs using an interrupted time series (ITS) design (53%), a before/after (26%), and a time series design (21%), 38 (53%) studied other substances using an ITS design (34%), a before/after (40%), and a time series design (26%). The proportion of an effective impact on drug therapy was lower in the "psychotropic drugs" group (23%) than in the "others" group (53%).

CONCLUSION

Drug-related safety warnings induce intended and unintended effects. The included studies are of broadly varying methodological quality. To better compare their effectiveness, studies should be conducted using standardised procedures.

Compliance with risk management plan recommendations on laboratory monitoring of antitumor necrosis factor-α therapy in clinical practice

BACKGROUND/PURPOSE

A risk management plan (RMP) was introduced to monitor the association between initiation of antitumor necrosis factor-α (anti-TNF-α) therapy and tuberculosis (TB) and viral hepatitis infections. The aim of this study was to assess adherence and predictors of laboratory-testing rates among patients treated with anti-TNF-α therapy.

METHODS

Data on patients receiving anti-TNF-α therapy between January 1, 2005, and November 31, 2013, were retrieved from a large medical organization in Taiwan. Newly-treated patients were categorized into pre- and post-RMP groups. Laboratory testing for TB and hepatitis B and C was ascertained and the proportion of new users receiving the test was compared between the pre- and post-RMP groups. Patient characteristics and concomitant medications used were investigated using multivariate logistic regression to determine the impact of each factor on laboratory testing.

RESULTS

Among 1128 new users, the initial testing rate of chest X-ray (CXR) for latent TB infection increased from 60.26% before RMP to 76.38% after RMP implementation; hepatitis B surface antigen (HBsAg) increased from 31.13% to 51.42%; and hepatitis C virus antibody (HCVAb) increased from 32.2% to 54.10%. CXR was significantly associated with age >60 years, higher Quan-Charlson comorbidity index score, psoriasis, and use of prednisolone (≥7.5 mg/d). Patients aged 40-60 years and with prednisolone doses of ≥7.5 mg/d and history of cancer were more likely to receive HBsAg or HCVAb tests than their counterparts.

CONCLUSION

The rate of laboratory test monitoring for anti-TNF-α therapy increased after RMP implementation. A strategy that integrates efforts from patient's education, health profession, and regulatory agencies is needed to improve safety screening and access to laboratory resources for the at-risk group of patients.

Impact of the 2002 American society for Colposcopy and Cervical Pathology guidelines on cervical cancer diagnosis in a geographically diverse population of commercially insured women, 1999-2004

OBJECTIVE

To report the impact of the release of the 2002 American Society for Colposcopy and Cervical Pathology guidelines on the management of abnormal cytological findings on time to diagnosis of cervical cancer in an insured population.

METHODS

This retrospective study identified women with cervical cancer (invasive and carcinoma in situ) through commercially insured administrative claims data. The cervical cancer case definition required a claim for cervical cancer and a claim with a diagnostic procedure (colposcopy, conization, biopsy, or hysterectomy). Time to diagnosis was defined as days between the initial Pap screening and the diagnostic procedure.

RESULTS

Between 1999 and 2004, there were 3,325 women aged 18 to 64 years who met the case definition for cervical cancer. Median time to diagnosis decreased from 42 days (interquartile range = 23-93 d) to 36.5 days (interquartile range = 20.5-80 d) for women with invasive cancer after the guideline change. The number of follow-up Pap screenings before biopsy also decreased (p = .0067). Among women with carcinoma in situ whose initial Pap screening was completed by a family practice clinician, time to diagnosis was projected to be more than 9 days longer compared with those whose screening was performed by a gynecologist.

CONCLUSIONS

The 2002 American Society for Colposcopy and Cervical Pathology guidelines for the management of abnormal cytological findings seem to have had a positive impact on the time to diagnosis and Pap screening use before biopsy for women diagnosed with cervical cancer.

Risks versus benefits of cyclooxygenase-2-selective nonsteroidal antiinflammatory drugs

PURPOSE

A summary of the basic science underlying the current controversies regarding cyclooxygenase-2 (COX-2)-selective nonsteroidal antiinflammatory drugs (NSAIDs), including data on their cardiovascular safety, their gastrointestinal (GI) benefits, cost-effectiveness, physician-prescribing trends, and recommendations for prescribing these agents is presented.

SUMMARY

A number of randomized controlled trials (RCTs) have reported that COX-2-selective NSAIDs increase cardiovascular events, although there appear to be gradations of risks among the COX-2-selective NSAIDs. In addition, traditional NSAIDs may increase the risk for cardiovascular events, complicating the interpretation of RCTs that use traditional NSAIDs as comparators. Selective inhibitors of COX-2-selective NSAIDs are effective antiinflammatory and analgesic drugs with improved upper-GI safety compared to traditional NSAIDs. Data on the cost-effectiveness of COX-2-selective NSAIDs indicate that they should be limited to patients at high risk for upper-GI adverse effects. However, they had been increasingly used in patients with lower GI risks until recent events reversed that trend. Circumstances under which COX-2-selective NSAIDs may be appropriate are in patients at high GI risk and in patients who did not respond to multiple traditional NSAIDs. The national spotlight in the United States on NSAID-related adverse events and recent lawsuits against health care providers prescribing COX-2-selective NSAIDs further highlights the need for provider-patient communication and risk disclosure. The relative cardiovascular risks of NSAIDs are similar in magnitude to other currently prescribed therapies.

CONCLUSION

Health care providers must consider the efficacy, GI and cardiovascular risks, concomitant medications, and costs when determining the appropriateness of COX-2-selective NSAID therapy.