PDGFRB and non-small cell lung carcinoma: Advanced refractory NSCLC with mutations, rearrangement and fusion involving RET oncogene, or abnormalities (non-synonymous SNV or amplification) in the nintedanib target genes VEGFR1-3, TP53, PDGFR-A, PDGFR-B, and FGFR1-3.