"9-1-1: Nashville" star Isabelle Tate died over the weekend at the age of 23.

"We are deeply saddened and completely heartbroken to share that Isabelle Tate passed away on October 19th," McCray Agency, a Nashville-based talent agency that represented her, wrote in an Instagram post.

The agency said in a statement that she had a rare form of Charcot-Marie-Tooth disease. The statement said her death was "sudden and shocking."

Isabelle Tate.

@mccrayagency / via Instagram

The disease affects how a person’s peripheral nerves work and "usually affects muscle control and how you feel your feet and hands," according to the Cleveland Clinic. It gets progressively worse over time.

Common treatments include special footwear, physical therapy, medications, surgery, and leg braces or wheelchair

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