TBX19 and neoplasm: To determine which attribute—lncRNA or TBX19‐202—plays a primary role in tumor cell development, we performed cell functional assays with equivalent TBX19‐202 translation between SFT2D2‐TBX19 and TBX19‐202 overexpression, as well as equivalent SFT2D2‐TBX19 lncRNA transcription between SFT2D2‐TBX19 and its ATG‐mutated variant, SFT2D2‐TBX19 (ATGmut) (Figure S7A,B, Supporting Information).