Abstract
Epidemiological studies undertaken over the past decades reveal a gradual but progressive increase in the incidence and mortality attributable to lung cancer in the Islamic Republic of Iran, a sovereign state geographically situated at the crossroads of Central Eurasia and Western Asia. We identified references published in English and Persian through searches of PubMed, EMBASE, Web of Science, Scopus, and the Scientific Information Database (SID)-a specialized Iranian database, which indexes Iranian scientific journals-between inception and 15 September 2017. Of 1475 references identified through electronic searches, we reviewed the full text of 88 studies, and included 38 studies in the review. Potentially druggable NSCLC targets, which have been studied in Iran include EGFR, ALK, ERBB2, and KIT; but no studies were found, which examined the impact of MET, ROS1, BRAF, PIK3CA, and FGFR1 aberrations. We were able to identify some literature on DNA repair genes and xenobiotic metabolism, including TP53, TP63, ERCC2, XRCC2, SIRT1, PTEN, CYP1A1, CYP1B1, GSTT1, and GSTM1. We also found an increasing amount of research performed in relation to the tumor microenvironment and immune contexture, including CTLA4, MAGE, FOXP3, IFN-γ, and various interleukins, chemokines, and transcription factors; but did not identify any publication concerning the expression of PD-1/PD-L1 in lung cancer. Our survey of research performed in Iran has revealed a dearth of studies in topics, which are otherwise highly pursued in developed countries, but nevertheless, has begun to hint at a distinct biology of lung cancer in this part of the world.
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