Univariate analysis revealed that pCR following neoadjuvant chemoimmunotherapy was not associated with sex, tumor location, tumor differentiation, pretreatment tumor size, PLR, LMR, hs-CRP, serum total protein, albumin, globulin levels, pretreatment CEA levels, IgG, IgA, IgM levels, peripheral blood T-lymphocyte count, CD4+ T-cell count, CD8+ T-cell count, or B-cell count (P > 0.05 for all). Here, CD4 is linked to neoplasm.