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How to map CPTAC digital pathology slides to sample ID and metadata

I am using digital pathology slides from CPTAC, downloaded from the Cancer Imaging Archive (https://wiki.cancerimagingarchive.net/pages/viewpage.action?pageId=70227748). However, I am having difficulty mapping the slide filenames to metadata. There was no metadata file present in the download from Cancer Imaging Archive.

How can I map the slide filenames to sample IDs or other metadata? These filenames do not follow the same schema as TCGA barcodes. Some case IDs have multiple slides, and I would like to know how they differ.

This is an example of a CPTAC BRCA whole slide image file:

01BR031-223a7222-d281-4bc3-865b-f774e2.svs

This filename is the case ID ("01BR031") followed by a UUID. If I search for the case on the GDC portal, I am brought to https://portal.gdc.cancer.gov/cases/717b4704-523e-4b75-8bc9-24dde2812c8e but this has no mention of the digital pathology slides.

cptac digital-pathology

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