Oh, 53, was a staple on Grey's Anatomy from its premiere in 2005 until her departure at the end of season 10 in 2014. Capshaw, meanwhile, played Dr. Arizona Robbins from seasons 5 to 14, briefly returning for season 20, and Luddington joined the series in 2012.

Also known as Lou Gehrig’s disease, ALS degrades a patient’s ability to control muscles, speak and eventually breathe without assistance. Read more at straitstimes.com. Read more at straitstimes.com.

ALS, also known as Lou Gehrig’s disease, is a degenerative disorder that slowly results in the loss of the ability to walk, speak, swallow, and, ultimately, breathe independently.