In my family yes it is hereditary/familial.
My father died from lung cancer at 39
My grandfather died from lung cancer at 35.
2012 myself and 2 daughters (10 and 30 yrs) were diagnosed with stage iv. Non small cell adenocarcinoma.
We tested negative for all known lung cancer genes (smoking, non smoking and environmental causes)
Therefore we have had no chemo or radiation.
Our cancer has remained dormant.
Publication of the research is imminent.