Understanding the link between genes and lung cancer Updated : November 21, 2020 08:51 PM IST Lung cancer can be broadly classified into non-small cell lung cancer and small cell lung cancer Oncologists have adopted a practice of understanding gene mutations for prescribing the precise course of treatment. Based on the gene/biomarker mutations there are various agents available for targeted treatment. Published : November 21, 2020 08:51 PM IST