The subject sample mapping file includes a mapping of study subject IDs to sample IDs. Samples are the final preps submitted for genotyping, sequencing, and/or expression data. For example, if one patient (subject ID) gave one sample, and that sample was processed differently to generate 2 sequencing runs, there would be two rows, both using the same subject ID, but having 2 unique sample IDs. The data table also includes a mapping of sample IDs to other sample ID aliases, and the substudy (phs accession) that the sample belongs to and sample use technology. The substudies are: Spatiotemporal Transcriptome of the Human Brain and BrainSpan Atlas of the Developing and Adult Human Brain.