welcome to HCM.
There is no 100 % cure for blood cancer
. As you mentioned your relative is in the terminal stage. In this condition there is no point in trying to treat the condition, rather more effort and money should be spent to make his remaining period of life more comfortable and less traumatic. Just pouring in lakhs of rupees with no useful results but more pain and disability
to the patient is totally unwelcome attitude. We must let common sense and logic prevail and not blindly follow the available high tech options of treatment.
Wishing your relative a peaceful and comfortable time till it lasts.