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Cosmos Study

Asthma Visits More Common After Flovent No Longer Manufactured

October 17, 2024
Dual-Team Study
Team A:Christopher Alban, MDJoe Deckert, PhD
Team B:Nikki Carrico, PharmDGregory Edwards, PhD

Key Findings

  • Among patients prescribed fluticasone propionate, the rate of asthma-related admissions, ICU stays, and ED visits was greater in the first and second quarters of 2024, after Flovent stopped being manufactured, than the average rates of the same quarters in 2022 and 2023. 

Asthma management often includes long-term control medications to prevent asthma attacks and rescue medications for acute episodes.1 On January 1, 2024, the Flovent metered-dosed inhaler and the dry powder inhaler, both used for long-term asthma control, were discontinued and are no longer manufactured.2 The manufacturer is encouraging use of an authorized generic version of fluticasone propionate, but some providers and patients have shared concerns about insurance coverage for and effectiveness of the available alternatives on the market.2,3  

To understand the effect on patients with asthma who depend on these long-acting medications, we looked at the rate of emergency department (ED) visits, admissions, and ICU stays for asthma in the periods before and after the change in availability of Flovent. We studied 3,312,869 patients who were prescribed fluticasone propionate within the six months preceding the quarter of interest. We studied only the first and second quarter of each year to control for seasonality. A patient’s fluticasone propionate prescription may have been for Flovent, the authorized generic, another brand, or an independent generic. 

In the first and second quarters of 2024, the rates of all types of visits were higher than the same periods averaged over 2022 and 2023. When looking at inpatient admissions, the rate of visits which were asthma related increased 17.5% for Q1 and 24.1% for Q2 compared to the average of the same quarters in 2022 and 2023.  

Figure 1
Asthma-Related Inpatient Admission Rates Among Patients Prescribed Fluticasone Propionate
Asthma-Related Inpatient Admission Rates Among Patients Prescribed Fluticasone Propionate
Figure 1. The rate per 100,000 inpatient admissions that were asthma-related among patients prescribed fluticasone propionate.

Asthma-related ICU admissions also increased in 2024. In the first quarter, the rates were 17.4% higher than the average of the same quarters in 2022 and 2023, while they were 21.3% higher in Q2. 

Figure 2
Asthma-Related ICU Admission Rates Among Patients Prescribed Fluticasone Propionate
Asthma-Related ICU Admission Rates Among Patients Prescribed Fluticasone Propionate
Figure 2. The rate per 100,000 ICU admissions that were asthma-related among patients prescribed fluticasone propionate.

Lastly, while still increased, the rate of asthma-related ED visits had the lowest increase of the encounter types. In Q1 2024, the rate was 6.5% higher than the average of the same quarter in 2022 and 2023, while in Q2 2024, the rate was 3.6% higher. 

Figure 3
Asthma-Related ED Visit Rates Among Patients Prescribed Fluticasone Propionate
Asthma-Related ED Visit Rates Among Patients Prescribed Fluticasone Propionate
Figure 3. The rate per 100,000 ED visits that were asthma-related among patients prescribed fluticasone propionate.

These data come from Cosmos, a dataset created in collaboration with a community of Epic health systems representing more than 274 million patient records from 1,500 hospitals and more than 36,000 clinics from all 50 states, Lebanon, and Saudi Arabia. This study was completed by two teams that worked independently, each composed of a clinician and research scientists. The two teams came to similar conclusions. Graphics by Brian Olson. 

References

  1. Asthma medications: Know your options. Mayo Clinic. Published July 2, 2024.  https://www.mayoclinic.org/diseases-conditions/asthma/in-depth/asthma-medications/art-20045557. Accessed September 4, 2024. 
  2. Coltrera F. Still confused after Flovent discontinuation? What to know and do. Harvard Health. Published February 16, 2024. https://www.health.harvard.edu/blog/still-confused-after-flovent-discontinuation-what-to-know-and-do-202402163016. Accessed September 4, 2024.4, 2024. 
  3. Treatment with FLOVENT HFA (fluticasone propionate inhalation aerosol). Flovent.com. https://www.flovent.com/. Accessed September 4, 2024.