# Accessing Images via SB-CGC Cancer Data Service (CDS)

HTAN Imaging Level 2 data is now available through the NCI SB-CGC Cancer Data Service (CDS).

NOTE: dbGaP approval for HTAN study phs002371 is required in order to access HTAN lower-level genomics data, such as RNAseq FASTQ and BAM files.

Data access via Seven Bridges Cancer Genomics Cloud (SB-CGC) requires a CGC account [register here]. For further information on using SB-CGC resources including programmatic access options, you can explore their online documentation.

# Filtering for HTAN Images in the CDS File Repository

From the SB-CGC dashboard, click Cancer Data Service Explorer under the Data tab.

Select Explore files

From the sidebar, filter by Dataset: HTAN and Experimental Strategy: ImagingLevel2

CDS: Filter by HTAN study CDS: Filter for imaging data

This provides a listing of all HTAN Imaging Level 2 data that is currently available through CDS.

# Download Images from CDS

Additional filters are available for further selection including Data format, Site, etc., as well as text search fields to search files by Filename, case ID (HTAN Participant ID), and sample ID (HTAN Biospecimen ID).

Once you have filtered to your files of interest, click Copy to project to add the selected files to the SB-CGC project of your choosing (create a new project if you do not have one set up).

You will be automatically re-directed to the Files tab of your SB-CGC project. From here, check the boxes of the files you would like to save. Clicking Download will download the selected images to your local machine.