any option for cancer patient confirm tckr if chart is prepared
there is no such quota for which you can get confirm berth for cancer patients.
you can travel in emergency quota for valid reason you can follow this steps
Write an application describing your emergency and submit the application requesting to the Chief reservation supervisor or the DRM with all the documents proving emergency case on the morning of the date of journey.
Though it will not guarantee you a confirm ticket but surely it will increase the chance of getting a berth.