This is a neurodegenerative disease
, and as you know that there is no established treatment for this condition however Pneumonia
can be treated by antibiotics and ventilator support but this recurs since brain disease is progressive. Stem cell therapy
has shown encouraging results in many neuro degenerative conditions but results are not proven. In this particular condition i have not seen any published report of use of stem cell therapy however i feel that once lung infection
is under control you may try and see if stem cell therapy works for your friend if you feel like(but this is purly experimental). You should not keep high hopes in this condition.