TransplantLines is designed as a single-center, prospective cohort study and biobank including all different types of solid organ transplant recipients as well as living organ donors. In the TransplantLines gut microbiome study the gut microbiome of solid organ transplant recipients is characterized and linked to clinical phenotypes. This batch contains 282 samples collected both cross-sectionally and longitudinally from lung transplant recipients as well as 68 samples from healthy controls. Metagenomics library preparation and sequencing were done at MGI as part of the Million Microbiome of Humans Project (MMHP).