You all have read 
So what exactly is Cybermancy?
This is a combined Magical and cybernetic technique that keeps a Metahuman's spirit caught in a technically dead body. It allows cyber surgeons to install more cyberware into a metahuman than previously thought impossible.............Shadowrunwikia
Extremely expensive procedure it is, and their is a huge impact to the body, spirit and mind of the subjects, this subjects are often referred to as Cyberzombies!
Complications
- Double "nature-ness" is a major side effect for cyberzombies. They are somewhat bi-polar.
- Cancer is an incurable and fast-growing side effects in this procedure. It occurs as a result of keeping the body cells alive longer than expected.
- Massive drug consumption, and this drugs are very expensive to ensure each cyberzombie is kept alive.
- Over-stimulation occurs often in cyberzombies, this results in detail lost in most of them.
- A syndrome-chronic dissociation whereby subject's ability to respond to invoked memory simulator fails. In the real World, these subjects will no longer coordinate their systems.
Indications
Few National Governments, corporations and states can only perform this procedure, it is considered as a "Black Op", which makes it officially unavailable to the public.
Novatech, Aztechnology, Tir na nOg are the few corporations capable of this expensive and top secrets procedure.