Biospecimen processing and quality control Before extracting nucleic acids, pathology quality control (QC) was performed on all frozen and FFPE tumours and normal specimens. From frozen tissue, a 30 mg or smaller piece was prepared, or an equivalent amount of scrolls were cut from a FFPE block, with sections stained with haematoxylin and eosin taken from
Source and culture conditions of NextGen cancer models The source of each of the NextGen models is provided in Supplementary Table 1. In brief, breast cancer organoid models were derived by the laboratories of A.V.L., S.O. and D.L.S. Most of the NextGen CNS tumour models were derived by the laboratory of K.L.L. Colorectal and oesophagus–stomach
