Spending on Hepatitis C Antivirals in the United States, 2009-2015

Estimating the impact of biosimilar entry on prices and expenditures in rheumatoid arthritis: a case study of targeted immune modulators

OBJECTIVE

To model changes in prices, utilization, and expenditures of targeted immune modulators (TIMs) for rheumatoid arthritis, accounting for biosimilar entry.

METHODS

Using IQVIA National Sales Perspective data between 2013 and 2019, we examined sales and expenditures of biologics and non-biological complex molecules, 20 quarters before and after patent exclusivity milestones. We estimated the impact of a molecule's exclusivity milestones and biosimilar entry on prices, using a regression discontinuity design (RDD). We then combined the RDD estimate with historical trends to assess the impact of adalimumab's exclusivity milestones on future TIM expenditures.

RESULTS

Changes in average molecule prices were associated largely with biosimilar uptake. For molecules with relatively high biosimilar uptake (>60%), prices fell considerably (-21.2% to -59.3%) one year after exclusivity milestones, whereas molecules with lower biosimilar uptake (<10%) experienced smaller price decreases (-2.4% to -8.4%). Average price reduction at the molecule level after biosimilar entry was not significant (-18.6%; p = .657). When applying the RDD results after adalimumab's exclusivity milestones, its projected share of total TIM market expenditures decreased from 48.0% in 2019 to 26.0% in 2025, whereas expenditures on Janus kinase inhibitors increased from 4.0% to 34.0%.

CONCLUSIONS

Biologics facing biosimilar competition may experience price decreases, potentially offering substantial savings to payers, patients, and society, although the magnitude of these estimates depends on biosimilar uptake. Formulary placement, along with manufacturer-payer dynamics, may also play a role in determining the impact on price and market uptake of biosimilars.

Molecular design, synthesis, and biological evaluation of bisamide derivatives as cyclophilin A inhibitors for HCV treatment

Hepatitis C virus (HCV) is a major cause of end-stage liver diseases. Direct-acting antivirals (DAAs), including inhibitors of nonstructural proteins (NS3/4A protease, NS5A, and NS5B polymerase), represent key components of anti-HCV treatment. However, some DAAs are associated with increased drug resistance and undesired side effects. Previous reports have shown that bisamides could be a novel class of cyclophilin A (CypA) inhibitors for treating HCV as a member of combinational therapies. To fully elucidate structure-activity relationships of bisamide derivatives and find a better hit compound with diverse binding modes, 16 biamides were designed with the help of docking program. They were then synthesized using one-pot four-component Ugi reaction. 7e with selectivity index of more than 18.9 (50% effective concentration of 5.3 μM, but no cytotoxicity at 100 μM) and unique binding mode that could be dived into gatekeeper pocket was selected as a new hit compound. Surface plasmon resonance experiments revealed that 7e is able to bind to CypA with a K_D of 3.66 μM. Taken together, these results suggest that 7e as a CypA inhibitor could be used as an alternative anti-HCV agent in combinational therapy in the future.

The short-term incidence of hepatocellular carcinoma is not increased after hepatitis C treatment with direct-acting antivirals: An ERCHIVES study

Recent studies have reported higher rates of hepatocellular carcinoma (HCC) in individuals treated with direct-acting antivirals (DAAs). However, making definitive conclusions has been challenging because of the heterogeneous populations and methodologies of these reports. We investigated whether DAA use is associated with higher rates of incident HCC compared to treatment with interferon (IFN)-based regimens. We performed a retrospective, population-based cohort study using the Electronically Retrieved Cohort of HCV Infected Veterans (ERCHIVES) database. In a cohort of 17,836 persons, sustained virological response (SVR) was achieved by 66.6% and 96.2% of the IFN and DAA groups, respectively. Among all treated persons, risk of HCC was not higher in the DAA group compared to the IFN group (hazard ratio, 1.07; 95% confidence interval, 0.55, 2.08). Among persons with cirrhosis who achieved SVR, neither the HCC incidence rate nor HCC-free survival were significantly different in the DAA group compared to the IFN group (21.2 vs. 22.8 per 1,000 person-years; P = 0.78 and log-rank P = 0.17, respectively). Untreated persons with cirrhosis had a significantly higher HCC incidence rate (45.3 per 1,000 person-years) compared to those treated with either IFN or DAAs (P = 0.03). Both groups of treated persons had significantly lower probability of HCC development compared to untreated persons (log-rank, P = 0.0004).

CONCLUSION

DAA treatment is not associated with a higher risk of HCC in persons with cirrhosis with chronic HCV infection in the short term. Previously reported higher rates of HCC associated with DAA treatment may be explained by both the presence of relatively fewer baseline HCC risk factors in persons treated with IFN as well as selection bias, given that DAA regimens were used to treat persons at higher risk for developing HCC. (Hepatology 2018;67:2244-2253).

National trends in prescription drug expenditures and projections for 2018

PURPOSE

Historical trends and factors likely to influence future pharmaceutical expenditures are discussed, and projections are made for drug spending in 2018 in nonfederal hospitals, clinics, and overall (all sectors).

METHODS

Drug expenditure data through calendar year 2017 were obtained from the IQVIA (formerly QuintilesIMS) National Sales Perspectives database and analyzed. New drug approvals, patent expirations, and other factors that may influence drug spending in hospitals and clinics in 2018 were also reviewed. Expenditure projections for 2018 for nonfederal hospitals, clinics, and overall (all sectors) were made based on a combination of quantitative analyses and expert opinion.

RESULTS

Total U.S. prescription sales in the 2017 calendar year were $455.9 billion, a 1.7% increase compared with 2016. The top drug based on expenditures was adalimumab ($17.1 billion), followed by insulin glargine and etanercept. Prescription expenditures in nonfederal hospitals totaled $34.2 billion, a 0.7% decrease in 2017 compared with 2016. Expenditures in clinics increased 10.9%, to a total of $70.8 billion. The decrease in spending in nonfederal hospitals was driven by lower utilization. The top 25 drugs by expenditures in nonfederal hospitals and clinics were dominated by specialty drugs.

CONCLUSION

We project a 3.0-5.0% increase in total drug expenditures across all settings, a 11.0-13.0% increase in clinics, and a 0.0-2.0% increase in hospital drug spending in 2018. Health-system pharmacy leaders should carefully examine their own local drug utilization patterns to determine their own organization's anticipated spending in 2018.

National trends in prescription drug expenditures and projections for 2017

PURPOSE

Historical trends and factors likely to influence future pharmaceutical expenditures are discussed, and projections are made for drug spending in 2017 in nonfederal hospitals, clinics, and overall (all sectors).

METHODS

Drug expenditure data through calendar year 2016 were obtained from the QuintilesIMS National Sales Perspectives database and analyzed. Other factors that may influence drug spending in hospitals and clinics in 2017, including new drug approvals and patent expirations, were also reviewed. Expenditure projections for 2017 for nonfederal hospitals, clinics, and overall (all sectors) were made based on a combination of quantitative analyses and expert opinion.

RESULTS

Total U.S. prescription sales in the 2016 calendar year were $448.2 billion, a 5.8% increase compared with 2015. More than half of the increase resulted from price hikes of existing drugs. Adalimumab was the top drug overall in 2016 expenditures ($13.6 billion); in clinics and nonfederal hospitals, infliximab was the top drug. Prescription expenditures in clinics and nonfederal hospitals totaled $63.7 billion (an 11.9% increase from 2015) and $34.5 billion (a 3.3% increase from 2015), respectively. In nonfederal hospitals and clinics, growth in spending was driven primarily by price increases of existing drugs and increased volume, respectively.

CONCLUSION

We project a 6.0-8.0% increase in total drug expenditures across all settings, an 11.0-13.0% increase in clinics, and a 3.0-5.0% increase in hospital drug spending in 2017. Health-system pharmacy leaders should carefully examine their own local drug utilization patterns to determine their own organization's anticipated spending in 2017.