TGFB1 and sarcopenia: Microbiome (21, 79) ↑Faecalibacterium, ↑Firmicutes, ↓Bacteroidetes (colitis) TGFβ signature (58) NLR (better accuracy for pneumonitis) (80) Eosinophils (41) Lymphocytes >2000 (41) Sarcopenia (58) Body mass index (60) Vitamin D (on investigation)