SAN DIEGO – and provides new recommendations for management in those with the condition or who are at risk for it.
Liver disease affects up to 70% of people with type 2 diabetes and is common in people with prediabetes and in those with type 1 diabetes who also have obesity. Non-alcoholic fatty liver disease (NAFLD) is the most common form of liver disease in people with diabetes. It can lead to cirrhosis and liver cancer and is associated with an increased risk for cardiovascular disease and death. The condition includes non-alcoholic steatohepatitis (NASH).
“The ADA has recognized that this has become a big problem for their patients because NASH is becoming the number one cause of cirrhosis in people with type 2 diabetes and the number one cause of liver transplantation in the United States, so we have to do something about it,” Kenneth Cusi, MD, who presented a summary of the new guidance at the annual scientific sessions of the American Diabetes Association, said in an interview.
The new ADA guidance was published as a mid-year update to the ADA’s Standards of Care in Diabetes–2023 in the section on “Comprehensive Medical Evaluation and Assessment of Comorbidities.”
Asked to comment, Atlanta endocrinologist Scott Isaacs, MD, said, “It is wonderful to see that the ADA has recognized NAFLD ... as the hepatic complication of type 2 diabetes and has updated the Standards of Care reflecting the current knowledge and evidence of this ubiquitous and often silent disease.”
The new ADA guidance aligns with those of other professional societies, including the American Association for the Study of Liver Diseases, the American Gastroenterological Society, and the American Association of Clinical Endocrinology.
Dr. Isaacs, who chaired the AACE guidance writing panel, noted, “The ADA update essentially repeats the same guidance in the AACE and AASLD documents. It is excellent to see this type of alignment of guidance among the major organizations.”
FIB-4: Easy calculation in the EHR
The ADA now advises screening all adults with type 2 diabetes or prediabetes, particularly those with obesity or cardiometabolic risk factors or established cardiovascular disease – even those with normal liver enzyme levels. People with type 1 diabetes who have obesity and/or cardiovascular risk factors are also to be screened for NAFLD.
The recommended screening tool is the fibrosis-4 index (FIB-4), a calculation that includes the patient’s age, liver enzyme levels, and platelet counts. A score of 1.3 or higher is considered high risk for clinically significant fibrosis and above 2.6 is very high-risk.
Dr. Cusi noted, “The reason we advise using the FIB-4 ... instead of liver enzymes as ADA advised in the past, is that now we know that 70% of people with type 2 diabetes have steatosis already and about one in five have fibrosis, but if you go by liver enzymes you will miss most of them. Liver enzymes are ineffective as a screening tool.”
The FIB-4 is “a simple tool we already have in our electronic health records (EHR) but we’re just simply not using it,” noted Dr. Cusi, chief of endocrinology, diabetes, and metabolism at the University of Florida, Gainesville.
Indeed, Dr. Isaacs said, “The FIB-4 is a simple ... great screening test because it is essentially free.” But he cautioned that it has some limitations.
“It is a good test for ruling out advanced liver disease but can have false positives and false negatives. The FIB-4 cutoffs need to be adjusted for persons over 65 years old and [should] not to be used for persons under 30 years old.”
Dr. Isaacs also pointed out that, while the calculation can be done from a website, “even this adds time to a clinician’s busy day. Ideally, the FIB-4 should be automatically calculated in the EHR or on the lab report, similar to the [estimated glomerular filtration rate] calculation [for kidney function] and flagged if greater than 1.3.”
The ADA update also provides guidance on follow-up for patients flagged with the FIB-4, including when referral to a gastroenterologist or hepatologist is appropriate.