"Three months ago, I had to go on medical leave after a severe exacerbation of a chronic illness I've lived with for seven years. During that time, it became clear that the road to recovery would be much longer and more complex than I had anticipated - and that I needed to focus on it fully," Simo said in a post on X.

Link to: https://www.wsj.com/tech/openai-top-executive-fidji-simo-to-step-down-c3daca47?st=NfBZTe

Simo stepped away from OpenAI in April for a medical leave.

“For now, my focus is recovery.”