Brca2Δex4–7/Δex4–7;Trp53Ko/+ mice exhibit increased occurrence of lymphomas, solid tumors and other hematopoietic and proliferative abnormalities. (A) The Kaplan–Meier plot showing tumor-free survival of Brca2Δex4–7/+, Brca2Δex4–7/Δex4–7 and Brca2Δex4–7/Ko mice (10 males and 10 females/genotype) on a Trp53+/+ (upper panel; Over all: χ2 = 4.226, P = 0.1209) and Brca2Δex4–7/+;Trp53Ko/+ and Brca2Δex4–7/Δex4–7;Trp53Ko/+ (lower panel; over all: χ2 = 1.730, P = 0.4210). (B) Incidence of hematopoietic neoplasm (Brca2Δex4–7/+ versus Brca2Δex4–7/Ko, P = 0.7206; Brca2Δex4–7/+;Trp53Ko/+ versus Brca2Δex4–7/Δex4–7;Trp53Ko/+, P = 0.0789), (C) Sarcoma and solid tumor (Brca2Δex4–7/+;Trp53Ko/+ versus Brca2Δex4–7/Δex4–7;Trp53Ko/+, P = 0.1050 for solid tumor). N = confirmed pathology per genotype.