Extended Data Fig. 2:
MetaOMineR-based analysis of the association between stool A. muciniphila (Akk) and clinical benefit to ICI in patients.
A-B. Correlations between stool prevalence of Akk (MetaOMineR pipeline) and ORR (A) or OS (B) in 1+2L NSCLC patients (N=338, A-B) based on MGS identification of Akk in the MetaOMineR algorithm (INRAE). Chi-square test (A) and Cox regression analysis for median overall survival (OS) depicted in Kaplan Meier curves according to detectable or undetectable Akk (Akk+ or Akk) analyzed in 2 groups (B, left panel) or segregated in 3 groups (Akk−, Akklow and Akkhigh) (B, right panel). Chi-square test P-values are two-sided, with no adjustments made for multiple comparisons (A). The Akk status was compared using the stratified log-rank test. P-values are one-sided with no adjustment (B). C. Experimental setting of avatar mice. FMT of NSCLC patients (Supplementary Table S3) segregated according to the presence or absence of Akk into MCA-205 tumor bearing C57BL/6 mice. Treatments are indicated by arrows (ATB, FMT, anti-PD-1 (ICI) mAbs, or isotype control mAbs (Iso)). D. MCA-205 tumor growth kinetics in each group of FMT according to the prevalence of Akk. in isotype Ctl versus anti-PD-1 mAbs treated mice. Data are presented as mean values +/−SEM of tumor sizes within 6 animals/group. Concatenation of at least n=8 experiments (using a different stool of NSCLC patient) containing 6 mice/group. Tumor sizes according to FMT Akk− (D, left panel) versus Akk+ (D, right panel) are depicted, each dot representing one mouse. Statistics were mixed-effect modeling with specific software ((https://kroemerlab.shinyapps.io/TumGrowth/) for longitudinal tumor growth analysis. P-value are indicated. E. Percentages of responding mice (tumor reduction of>25 % compared with means of controls in the anti-PD-1 mAbs -treated group) and patients (ORR) in each category of stools used for FMT (derived from patients in Supplementary Table S3). CR; complete response. PR; partial response, SD; stable disease, PD; progressive disease.