Exhibit 23.1

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM’S CONSENT

We consent to the inclusion in this Registration Statement of Avista Public Acquisition Corp. II (the “Company”) on Amendment No. 3 to Form S-4 Registration No. 333-264525 of our report dated March 25, 2022, which includes an explanatory paragraph as to the Company’s ability to continue as a going concern, with respect to our audit of the financial statements of the Company as of December 31, 2021 and for the period from February 5, 2021 (inception) through December 31, 2021, which report appears in the Prospectus, which is part of this Registration Statement. We also consent to the reference to our Firm under the heading “Experts” in such Prospectus.

/s/ Marcum LLP

Marcum LLP

New York, New York

August 22, 2022