Gene Expression Profiling of Lung Atypical Carcinoids and Large Cell Neuroendocrine Carcinomas Identifies Three Transcriptomic Subtypes with Specific Genomic Alterations

IntroductionDNA mutational profiling showed that atypical carcinoids (ACs) share alterations with large cell neuroendocrine carcinomas (LCNECs). Transcriptomic studies suggested that LCNECs are composed of two subtypes, one of which shares molecular anomalies with SCLC. The missing piece of information is the transcriptomic relationship between ACs and LCNECs, as a direct comparison is lacking in the literature.MethodsTranscriptomic and genomic...