Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use in this Amendment No. 3 to Registration Statement No. 333-297483 on Form S-4 of our report dated March 16, 2026, relating to the financial statements of Rallybio Corporation. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ Deloitte & Touche LLP

Hartford, Connecticut

October 2, 2026