MKI67 and neoplasm: More precisely, vertical reference lines were marked at the minimum value of λ (λ = 0.010) and one standard error above this minimum value (λ = 0.062), as displayed in Figure 3A. At a log (λ) value of -2.766, five key variables with non-zero coefficients were identified: tumor size, Ki-67, molecular subtype, targeted therapy, and chemotherapy regimen.