Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of Jade Biosciences, Inc. of our report dated March 6, 2026 relating to the financial statements, which appears in Jade Biosciences, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2025.

/s/ PricewaterhouseCoopers LLP

Boston, Massachusetts

May 7, 2026