Maureen Burke, the Labour MP for Glasgow North East, has just shared a moving story about her brother.
She says David, when he was 52 was suddenly diagnosed with advanced pancreatic cancer.
"Over the next 18 months, David tried everything he could to stay alive," she says.
But Burke says nothing was successful and by the end of his life, David was living in a hospital bed at home, with increasing doses of painkillers.
"His body became skeletal and his speech gradually disappeared, and one of the last times when he still was able to speak, he called out to me from his bed and told me if there was a pill that he could take to end his life, he would very much like to take that," she goes on.
Burke - with MPs behind her appearing to be emotional - says David continued to "suffer in silent pain for a further three weeks",
She says that he is doing "right by her brother" in speaking in support of assisted dying.