TP53 and breast carcinoma: Our previous work described the long amplicon ddPCR assays that were used to quantitate the expression of seven TP53 transcripts encoding FL/∆40p53α, β and γ, and ∆133p53α, β and γ (LRG_321 transcripts t1–t7; see Figure 1) in a New Zealand breast cancer cohort [13].