TP53 and breast neoplasm: As the levels of the TP53β and TP53γ 3′ends in breast tumors have been associated with patient prognosis [14,15], based on TP53 mutation status, we also analyzed how the individual transcripts that would contribute the most to these TP53 3′ end measurements, that being transcripts t3 (encoding FL/∆40p53β) and t4 (encoding FL/∆40p53γ), respectively, were associated with distant metastasis-free survival (DMFS) of patients.