New renal drugs change the stakes
The availability of newer drugs for slowing CKD progression such as the SGLT2 inhibitors will help trigger greater support for routine albuminuria testing, Dr. Litvin predicted in an interview. “Now that we have more medications that can reduce albuminuria and improve outcomes, I see screening for albuminuria increasing.” Finerenone (Kerendia) is another new agent from a new class that recently received Food and Drug Administration approval for treating CKD in patients with type 2 diabetes.
Other drivers of increased uACR testing she expects include revised clinical practice guidelines, and new quality measures of clinical care.
“Undertesting of albuminuria means that [nephrologists] have incomplete data to detect and completely risk stratify the CKD population. That in turn results in a reduced ability to match population health interventions to the severity of the condition or the risk stratification based on eGFR and uACR,” Dr. Vassalotti said in an interview.
“We are missing opportunities to prevent or delay kidney failure and reduce the risk of cardiovascular events and cardiovascular death in these patients, particularly now that we have a number of medications that offer kidney and cardiovascular protection such as SGLT2 inhibitors,” he added. “Leaders in nephrology are beginning to understand the consequences of undertesting, and are working to innovate to improve risk stratification, CKD detection, and apply interventions to give Americans living with CKD better outcomes.”
Strategies proven to boost albuminuria testing
Mr. Stempniewicz and coauthors cited in their report potential strategies for improving albuminuria testing, including benchmarking to identify best-performing sites for albumin testing within a health system and encouraging replication of identified best practices at lower-performing sites, and implementation of clinical-decision support tools in the EHR such as pop-up test reminders.
These were among the tools tested in two studies led by Dr. Litvin. One study, with results reported in 2016, involved 12 small U.S. primary care practices with a total of more than 30,000 patients and compared performance in a series of clinical quality measures at baseline with performance after 2 years of receiving various interventions designed to boost awareness for albuminuria testing.
The second study, with findings reported in 2019, involved 21 U.S. primary care practices that collectively cared for more than 100,000 patients and randomized the practices to either undergo interventions aimed at boosting testing awareness or to serve as controls.
Results from both studies showed significant and substantial increases in serial testing for albuminuria in patients with diabetes or hypertension when practices received the interventions.
“We showed that [using a] clinical-decision support tool, along with standing orders to automatically collect urine specimens, dramatically increased screening for urinary albumin in primary care practices,” Dr. Litvin said. “However, perhaps because of conflicting guidelines and clinical inertia there hasn’t been a major impetus for primary care practices in general to improve screening.” She hopes that will quickly change.
“As we have shown, adoption of EHR-based reminders along with standing orders can very quickly improve screening for albuminuria in primary care.”
Variation in testing rates among sites ‘tremendous’
One finding of the new study gives Mr. Stempniewicz hope for greater future testing: The large variance that the researchers saw in albuminuria testing rates within individual health systems.
“The paper shows that higher rates of testing are completely achievable within each system. Some clinics do very well, and the other units can learn from these local successes,” he said. At least half the organizations in the study had individual sites that fell into the top 10% for testing rates across all the greater than 1,000 sites included, and those same organizations also had at least one site that fell into the bottom 10% for testing.
“The variation is tremendous, and highlights an opportunity for improvement,” declared Mr. Stempniewicz.
“For routine testing, you need systems that help people. Clinicians shouldn’t have to think about doing routine testing. It should just happen,” said Dr. Coresh.
The study was funded in part by Janssen. Mr. Stempniewicz and Dr. Litvin had no disclosures. Dr. Coresh is an adviser to Healthy.io, a company that markets a home albuminuria testing kit to patients. Dr. Vassalotti has received personal fees from Renalytix.