Hi C.,
I say "Amen" to the input that you have already received.
I would also like to encourage you to help them to continue to press in spiritually to seek guidance from Jesus. There are many aspects to healing and the appropriate ones are all provided to us through Him. We just have a tough time discerning what He wants us to do and what "man" tells us to do.
I can share info about a ministry called "The Healing Rooms" that you can take your nephew to for healing prayer ministry.
I can also share info about a nutritional juice product that is enhancing the immune system. It has two miracle molecules (resveratrol & ellagic acid) that have been shown to cause some cancer cells to die a natural death. It is called Genesis and you can find more info about it on my website at www.symmetrydirect.com/dhendon
Please call me if I can be of any further help with either of these nuggets of divine healing provision.
Saving Lives One Ounce at a Time,
D. Hendon, RDH, SMM
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www.symmetrydirect.com/dhendon