A nurse who has worked for Stephen Hawking for 15 years has been suspended and is confronted with a claim about misconduct.
The scientist's family reportedly filed a complaint that led to a long investigation into 61-year-old Patricia Dowdy.
However, details about the case and the nature of the disciplinary charges against Ms. Dowdy are suppressed by the nursing agency.
The six-week Nursing and Midwifery Council (NMC) hearing, which began in February and lasts until March 21, is held behind closed doors.
Director of fitness to practice with the nurse watchdog, Matthew McClelland said that in some cases hearings may be held in & due to the health of those involved in the case, or that the allegations are related to a health condition of the nurse or midwife & # 39 ;, reported the BBC.
When Dowdy was approached for comments, she told the Mail on Sunday that she was & # 39; upset & # 39; and & # 39; did not intend to talk to anyone & # 39 ;.
According to a source with knowledge of the case, the allegations against the nurse are & # 39; pretty serious & # 39 ;.
The alleged misconduct of Mrs. Dowdy, from Ipswich in Suffolk, took place in Cambridge, according to the NMC's register of hearings.
Professor Hawking died at his home in Cambridge in March last year at the age of 76, after having lived with motor neuron disease for more than 50 years.
Known as one of & # 39; the world's best scientific minds, he was diagnosed with a rare form of motor neuron disease in 1964 at the age of 22 and only had a few years to live.
The father of three people eventually got into a wheelchair and depended on an automated speech system for communication.