Is the repentance of a sinner afflicted with a fatal, incurable disease accepted after he has despaired of treatment?

The repentance of a person who has despaired of life due to a chronic illness, or being condemned to death, or deserving stoning, is valid, as long as their soul has not reached their throat (i.e., they are not in the throes of death). Allah accepts repentance before death, as stated in His Almighty saying: "The acceptance of repentance by Allah is only for those who do evil in ignorance and then repent soon after. It is those to whom Allah will turn in forgiveness, and Allah is ever Knowing and Wise." However, whoever repents at the moment of death, their repentance is not accepted. Repentance has five conditions: sincerity, regret, abstaining from the sin, resolving not to return to it, and that it be before death or the sun rising from the west.