From the AGA Journals

Health care costs nearly doubled for patients with NAFLD

Publish date: May 12, 2020

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NASH-modifying drugs may cut costs

The possibility of FDA approval of NASH-modifying drugs later this year brings the hope of improving outcomes for patients with NAFLD. Inevitably, the cost effectiveness of those drugs also will be scrutinized as we evaluate their impact in the coming years. To that end, Hagstrom et al. provide useful insight regarding the real-world costs of medical care among patients with histologically staged NAFLD in Sweden.

Dr. Maya Balakrishnan

Their main finding is that medical costs for a patient with NAFLD over 20 years is double that for a random control patient from the general population.
It is worth taking a deeper dive into the factors that drove the cost differential. First, higher inpatient and outpatient specialty care costs accounted for the incremental cost of NAFLD care; drug costs were materially similar in the two groups, albeit examined over a very short time period in the study due to limited national registry data. Second, the cost differential was largest in the first year of diagnosis and attributed to the cost of liver biopsy and related expenses. Last, as one would expect, the cost differential was largest between patients who had stage 3-4 fibrosis, possibly explained by the costs of NASH-related complications.
While we hope that NASH-modifying drugs will reduce the risk of liver-specific complications, the cumulative financial impact of such therapies remains to be seen. On the one hand, short-term costs may increase because of the direct expense of the NASH-modifying drugs plus additional expenses related to management of side effects. In addition, it is likely patients treated with NASH-modifying drugs will need more frequent assessments of liver disease severity to evaluate whether the medication is working, which even if done noninvasively, is likely the add to medical costs. In the long term however, NASH-modifying treatments may reduce the risk of NAFLD complications over time, mitigating the cumulative cost of NAFLD care. The true net effect remains to be seen. In the meantime, we need further studies that quantify costs of NAFLD care - ideally by disease severity and that provide greater insight into the cost of caring for the complications of NASH progression, including liver disease clinical decompensations and transplant.

Maya Balakrishnan, MD, MPH, is an assistant professor, department of medicine, section of gastroenterology & hepatology, Baylor College of Medicine, Houston, and director of hepatology at Ben Taub General Hospital, Houston. She has no conflicts of interest.

FROM CLINICAL GASTROENTEROLOGY AND HEPATOLOGY

The health care costs of patients with nonalcoholic fatty liver disease (NAFLD) were nearly twice that of matched population controls, according to the results of a longitudinal cohort study.

Patients with biopsy-confirmed nonalcoholic steatohepatitis (NASH) were hospitalized an average of 0.27 times per year versus 0.16 times for controls (P < .001), for an annual incremental cost of $635, reported Hannes Hagström, MD, PhD, of Karolinska University Hospital in Stockholm. Patients with NAFLD also made significantly more outpatient care visits than controls (P < .001), he said. “Patients with advanced fibrosis [had] the highest costs, suggesting that reducing fibrosis progression is important to reduce future health care costs” among patients with NASH, Dr. Hagström and his associates wrote in Clinical Gastroenterology and Hepatology.

The retrospective longitudinal cohort study included all 646 patients diagnosed with biopsy-confirmed NAFLD at two hospitals in Sweden between 1971 and 2019. Patients with other liver diseases were excluded, as were heavy drinkers: men who drank more than 30 g of alcohol (just under four units) daily and women who drank more than 20 g daily. Each patient with NAFLD was matched with 10 population controls matched by age, sex, and county of residence.

Over a mean of 19.9 years of follow-up (range, 0-40 years), patients with NASH were hospitalized a total of 3,478 times, an average of 5.4 hospitalizations per patient. Controls were hospitalized an average of 3.2 times during the same time period (P < .001 vs. NASH patients). “This corresponded to a higher incremental cost in NAFLD patients of $635 per year (95% confidence interval, $407-$864; P < .001),” the researchers reported.

Between 2001 and 2009, patients with NAFLD averaged 5.4 more outpatient visits than controls (P < .001), with annual averages of 1.46 versus 0.86 visits (P < .001). Consequently, patient with NASH incurred $255 more per year in annual outpatient care costs. Liver disease accounted for 6% of outpatient care costs among NASH patients versus 0.2% of costs among controls.

“Cumulative costs in the [fibrosis stage 3 and 4] subgroup were relatively matched with the control population until around year 4 after biopsy, when costs diverged,” the researchers said. “This could possibly be an effect of the larger F3 population developing cirrhosis and increasing costs due to decompensation events.”

They noted that the rising prevalence of NAFLD will further burden health care budgets. “Costs [among patients with NASH] were higher in conjunction with liver biopsy, which is why using noninvasive diagnostic methods (e.g., transient elastography) is likely to reduce total costs,” they added. Of note, although patients with NAFLD also incurred somewhat more per year in prescription costs, the difference was not statistically significant.

The study was supported by Stockholm City Council, the Bengt Ihre Foundation, the County Council of Östergötland, and Gilead. The researchers reported having no conflicts of interest.

SOURCE: Kim H et al. Clin Gastroenterol Hepatol. 2019 Sep 12. doi: 10.1016/j.cgh.2019.10.023.

Health care costs nearly doubled for patients with NAFLD

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