Wednesday, April 11, 2012

Chronic HCV associated with high comorbidities in US population...

A synopsis of a journal article by Louie et al, appearing in 'BMC Infectious Disease' (see citation below) posted on the Infection Control Today website on 4/11/12. The study, called "The High Comorbidity Burden of Hepatitis C Virus Infected Population in the United States", is a retrospective cohort study using a US medical claims database designed to estimate the 2 year prevalence of comorbidities with chronic HCV.  The result? A LOT of cormorbidities are associated with chronic HCV, and the authors call for increased access to treatment to reduce the burden of HCV.

High Comorbidity Burden of the U.S. Hepatitis C Virus-Infected Population

Chronic hepatitis C (HCV) disease can be complicated with comorbid conditions that may impact treatment eligibility and outcomes. The aim of the study by Louie, et al. (2012) was to systematically review comorbidities and symptoms in an HCV-infected population, specifically assessing comorbidities associated with HCV antiviral treatment and disease, as well as comparing comorbidities between an HCV-infected and uninfected control population.
 
This was a retrospective cohort study within a United States medical claims database among patients with chronic HCV designed to estimate the two-year period prevalence of comorbidities. Patients with two HCV diagnosis codes, 24 months of continuous health insurance coverage, and full medical and pharmacy benefits were included.

Among a chronic HCV cohort of 7,411 patients, at least one comorbid condition was seen in almost all patients (>99%) during the study period. HCV-infected patients reported almost double the number of comorbidities compared to uninfected controls. Of the 25 most common comorbidities, the majority of the comorbidities (n = 22) were known to be associated with either HCV antiviral treatment or disease. The five most frequent comorbidities were liver disease [other] (37.5%), connective tissue disease (37.5%), abdominal pain (36.1%), upper respiratory infections (35.6%), and lower respiratory disease (33.7%). Three notable comorbidities not known to be associated with antiviral treatment or disease were benign neoplasms (24.3%), genitourinary symptoms & ill-defined conditions (14.8%), and viral infections (13.8%).

The researchers concluded that this U.S. medically insured HCV population is highly comorbid. Effective strategies to manage these comorbidities are necessary to allow wider access to HCV treatment and reduce the future burden of HCV disease and its manifestations. Their research was published in BMC Infectious Diseases.

Reference: Louie KS, et al. The high comorbidity burden of the hepatitis C virus infected population in the United States. BMC Infectious Diseases 2012, 12:86 doi:10.1186/1471-2334-12-86

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