Dear GLASS Consortium, I am working with the RNA-seq dataset from the GLASS project and obtained the count matrix file transcript_count_matrix_all_samples.tsv. I am experiencing two issues ID Mapping: The column names in the count matrix do not directly align with the IDs in the clinical metadata table. I would appreciate guidance on which key/mapping table (e.g., sample/aliquot dictionary) should be used to link these count matrix headers to the patient (case_barcode) metadata. Paired / Longitudinal Information: I am specifically interested in analyzing paired (initial vs. recurrent) samples. Is there a single comprehensive metadata file or database view that links the count matrix sample IDs directly to paired clinical information?Any guidance or link to the appropriate files on Synapse/GLASS database would be greatly appreciated.