Extended Data Fig. 5. Ratio of transduced CD4+ to CD8+ cells and memory sub-populations in afami-cel manufactured product.
(a) Ratio of CD4+ to CD8+ cell subsets within the transduced cells infused, derived from immunophenotyping: Ratios greater than 1 denote a CD4 bias in the transduced cells. Horizontal lines denote median values. Samples are grouped and color coded by BOR resulting from the infusion (blue PR, gray SD, red PD, black NE). Ratio of PR range 0.19–16.16 (median 1.30, n = 9) vs. SD range 0.03–11.58 (median 1.26, n = 16) vs. PD range 0.76–12.52 (median 3.94, n = 6). (b) Memory subset distribution by immunophenotyping within the transduced cells infused: The proportion of live single transduced afami-cel within the respective memory subsets is indicated by box plots for CD8+ afami-cel on the left and for CD4+ on the right. Samples are grouped and color coded by BOR resulting from the infusion (blue PR, gray SD, red PD, black NE). CM = central memory, CD45RA-CCR7+; EM = effector memory, CD45RA-CCR7-; EMRA = effector memory RA+, CD45RA+ CCR7-; SCM = stem cell memory, CD45RA+ CCR7+. Two-sided paired Wilcoxon test P values are shown linking compared cell types. Box plots depict median as horizontal lines within boxes, with box bounds as the first and third quartiles. Dots represent individual data points. Lower whisker is the minimum value of the data within 1.5 times the interquartile range below the 25th percentile. Upper whisker is the maximum value of the data within 1.5 times the interquartile range above the 75th percentile. BOR, best overall response; DEX, dextramer; NE, not evaluable; PD, progressive disease; PR, partial response; SD, stable disease.