The Global Parkinson's Disease Genetics (GP2) Genome Browser.

BACKGROUND

Large-scale sequencing initiatives have generated extensive genomic resources essential for variant interpretation, yet their effective use often requires bioinformatics expertise. To support identification of Parkinson's disease (PD) risk and disease-causing variants, we developed an open-access, summary-level genomic data browser.

METHODS

We performed uniform joint variant calling to harmonize whole-genome sequencing (WGS) data from AMP-PD Release 4, GP2 Data Releases, and additional controls from the Alzheimer's Disease Sequencing Project. Clinical exome sequencing (CES) data from GP2 Release 8 was also included.

RESULTS

The integrated dataset includes 31,665 WGS and 9,559 CES samples, spanning eleven ancestries and over 300 million variants.

CONCLUSION

The GP2 Genome Browser is a lightweight, flexible platform providing intuitive gene- and variant-level summaries with ancestry-stratified allele frequencies and functional annotations. It is open source and freely accessible at https://gp2.broadinstitute.org, enabling broad access to PD genomic data and supporting global research efforts.