In Re Spero Therapeutics, Inc. Securities Litigation

District Court, E.D. New York·Decided October 28, 2024·No. 1:22-cv-03125·Unknown

Opinion

UNITED STATES DISTRICT COURT EASTERN DISTRICT OF NEW YORK

MEMORANDUM AND ORDER IN RE SPERO THERAPEUTICS, INC., 22-CV-3125 (LDH) (MMH) SECURITIES LITIGATION

LASHANN DEARCY HALL, United States District Judge: Kashif Memon, Nabil Saad, and Richard Germond (“Plaintiffs”), individually and on behalf of all persons who purchased or otherwise acquired Spero Therapeutics common stock between September 8, 2020, and May 3, 2022 (the “Class Period”), bring the instant action against Spero Therapeutics, Inc. (“Spero”), Ankit Mahadevia, and Satyavrat Shukla (together with Spero, “Defendants”), alleging violations of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 (“Exchange Act”). Defendants move pursuant to Rule 12(b)(6) of the Federal Rules of Civil Procedure to dismiss the Complaint in its entirety. I. BACKGROUND1 A. Regulatory Framework for the Approval of a New Drug Under the Federal Food, Drug, and Cosmetic Act, the Food and Drug Administration (“FDA”) is tasked with ensuring that drugs and devices are safe and effective for their intended uses. 21 U.S.C. §§ 351–360. Companies seeking to commence a clinical investigation of a new drug must submit an Investigational New Drug Application (“IND”) to the FDA. 21 C.F.R. §

1 The following facts are taken from Plaintiff’s amended complaint (ECF No. 20) and, unless otherwise indicated, are assumed to be true for the purposes of this memorandum and order. 312.20. A clinical investigation of a new drug is generally divided into three phases. See 21 C.F.R. § 312.21. Phase 1 includes the initial introduction of the drug into humans, and generally involves 20 to 80 patients. 21 C.F.R. § 312.21(a). Phase 2 includes “controlled clinical studies conducted to evaluate the effectiveness of the drug for a particular indication . . . in patients with

the disease or condition under study” and generally involves no more than several hundred subjects. 21 C.F.R. § 312.21(b). Phase 3 includes expanded controlled and uncontrolled trials “performed after preliminary evidence suggesting effectiveness of the drug has been obtained” and usually includes several hundred to several thousand subjects. 21 C.F.R. § 312.21(c). After the three clinical investigation phases are complete, but prior to filing a New Drug Application (“NDA”), a sponsoring company meets with the FDA to exchange information about the proposed drug marketing application. 21 C.F.R. § 312.47. This pre-NDA meeting provides an opportunity for the sponsoring company to: (1) “uncover any major unresolved problems,” (2) “identify those studies that the sponsor is relying on as adequate and well- controlled to establish the drug’s effectiveness,” (3) “identify the status of ongoing or needed

studies adequate to assess pediatric safety and effectiveness,” (4) “acquaint FDA reviewers with the general information to be submitted in the marketing application (including technical information),” (5) “discuss appropriate methods for statistical analysis of the data,” and [6] “discuss the best approach to the presentation and formatting of data in the marketing application.” 21 C.F.R. § 312.47(b)(2). Once a pre-NDA meeting is held, the sponsoring company may formally request FDA approval of a drug for marketing in the United States through submission of an NDA. 21 C.F.R. § 314.50. The NDA includes all animal and human data and analyses of the data, as well as information about how the drug behaves in the body and how it is manufactured. Id. The FDA has 60 days after an NDA is received to decide whether to file the NDA for review. 21 C.F.R. § 314.101(a)(1). If the FDA determines that the filing of the NDA should be refused, the FDA will notify the applicant in writing and state the reason for the refusal. 21 C.F.R. § 314.101(a)(3). At that time, an applicant whose filing of an NDA was refused for regulatory deficiencies is

provided an opportunity to amend its application and resubmit it to the FDA for review. Id. Where the FDA finds no basis to refuse the filing of an NDA, the FDA will file the NDA for substantive review. 21 C.F.R. § 314.101(a)(2). Once the review is complete, the FDA will either approve the NDA or issue a complete response letter rejecting the application. 21 C.F.R. § 314.110(a). Approvals are not granted, however, until after the FDA “determines that the drug meets the statutory standards for safety and effectiveness, manufacturing and controls, and labeling[.]” 21 C.F.R. § 314.105(c). B. Spero’s Development of THBr Spero is a biopharmaceutical company founded in 2013 that focuses on identifying,

developing, and commercializing treatments for multi-drug resistant bacterial infections and rare diseases in the U.S. (Am. Compl. ¶ 35., ECF No. 20.) During the Class Period, Spero sought FDA approval for an anti-bacterial pill called tebipenem pivoxil hydrobromide (hereinafter “THBr”), which was intended to treat complicated urinary tract infections (“cUTI”).2 (Id. ¶¶ 35, 36.) Because the treatment of cUTIs typically requires hospitalization and intravenous medication, the development of an orally administered and more-cost-effective treatment would be significant. (Id. ¶ 34.) On October 20, 2017, Spero announced the initiation of a Phase 1 safety, tolerability, and pharmacokinetics study of THBr. (Id. ¶ 39.) In its announcement, Spero shared that the FDA

2 A cUTI occurs “when a patient presents with any functional, metabolic, or anatomical condition that may increase the risk of treatment failure or adverse outcomes.” (Id. ¶ 32.) had designated THBr as a Qualified Infectious Disease Product for cUTIs. (Id.) “This designation incentivizes manufacturers of new antibiotic treatments by offering them benefits including FDA priority review and eligibility for additional market exclusivity.” (Id.) Three days later, Spero launched its IPO, raising $83.6 million in gross proceeds. (Id. ¶ 40.)

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