Article | October 17, 2022

Long-Term Follow-Up Studies: Gene Therapy Products, Protocols And Potential Issues

Source: Precision ADVANCE

By Meredith Latino


A “long-term” study is one that gathers data on research subjects for 5 years or more. Long-term follow‑up observations are extended assessments that continue some of the scheduled observations of a clinical trial past the active follow-up period.1

There are several arguments for conducting studies to assessing the long-term risk of drugs. The information gained from this research can play an important role in health promotion and disease prevention. Regulatory authorities can use data from long-term drug studies to require changes in labeling or medication guidance, or even withdraw a drug. Physicians and patients can use the data from long-term studies to make decisions related to treatment or prevention. In addition, long-term studies are needed for monitoring effectiveness and long-term safety, particularly for studies in patients who require chronic treatment for their disease.2 Information provided by long-term clinical studies complements the results of short-term, randomized, controlled trials, which often form the basis of regulatory approval for a new drug application.3

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