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Protagenic Therapeutics, Inc.

149 Fifth Avenue

New York, NY 10010

December 23, 2024

VIA EDGAR

United States Securities and Exchange Commission

Division of Corporation Finance

100 F Street, N.E.

Washington, DC 20549

Re: Protagenic Therapeutics, Inc. Registration Statement on Form S-1 Filed December 20, 2024 File No. 333-283949

Ladies and Gentlemen:

Pursuant to Rule 461 under the Securities Act of 1933 and on behalf of Protagenic Therapeutics, Inc. (the “Company”), the undersigned hereby requests that the Company’s Registration Statement on Form S-1 (File No. 333-283949) filed with the U.S. Securities and Exchange Commission (the “Commission”) on December 20, 2024 (the “Registration Statement”), be declared effective on December 26, 2024, at 9:00 am, Eastern Standard Time, or as soon as practicable thereafter.

	Very truly yours,
	PROTAGENIC THERAPEUTICS, INC.
	By:	/s/ Alexander K. Arrow
		Alexander K. Arrow Chief Financial Officer

cc: Dean Colucci, Duane Morris LLP