Key takeaways: By 2035, the model projects more than 40 U.S. states will be seeing 50 or more additional visits per ALS clinic per year. The projected increase in demand can be tied to advances in genetic testing. Trends in the identification and treatment of ALS are expected to lead to a significant increase in clinic demand over the next decade, highlighting the need for greater investment, according to a study published in Neurology Genetics.