In Re Regulus Therapeutics Inc. Securities Litigation

CourtDistrict Court, S.D. California
DecidedSeptember 5, 2019
Docket3:17-cv-00182
StatusUnknown

This text of In Re Regulus Therapeutics Inc. Securities Litigation (In Re Regulus Therapeutics Inc. Securities Litigation) is published on Counsel Stack Legal Research, covering District Court, S.D. California primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
In Re Regulus Therapeutics Inc. Securities Litigation, (S.D. Cal. 2019).

Opinion

1 2 3 4 5 6 7 8 9 UNITED STATES DISTRICT COURT 10 SOUTHERN DISTRICT OF CALIFORNIA 11 12 IN RE REGULUS Case No.: 3:17-cv-0182-BTM-RBB THERAPEUTICS INC. 13 SECURITIES LITIGATION ORDER GRANTING 14 DEFENDANTS’ MOTION TO

DISMISS AND GRANTING 15 PLAINTIFFS LEAVE TO AMEND 16 [ECF No. 22] 17 18 19

20 This is a putative securities class action filed on behalf of all purchasers of 21 common shares of Regulus Therapeutics, Inc. (“Regulus”) between February 17, 22 2016 and June 12, 2017, inclusive (the “Class Period”). Plaintiffs allege that 23 Defendants Regulus, Joseph P. Hagan, Paul C. Grint, M.D., and Michael Huang, 24 M.D.1 made misleading statements regarding a pharmaceutical product being 25

26 27 1 Defendant Grint was Regulus’s Chief Executive Officer (“CEO”) from June 1, 2015 through his resignation on May 4, 2017. (ECF No. 19, ¶ 17.) Defendant 28 1 developed by Regulus that artificially inflated its common stock prices during the 2 Class Period. Based thereon, Plaintiffs assert claims for violation of Section 10(b) 3 of the Securities Exchange Act, 15 U.S.C. § 78j(b), Rule 10b-5, 17 C.F.R. § 4 240.10b-5, and Section 20(a) of the Securities Exchange Act, 15 U.S.C. § 78t(a). 5 (ECF No. 19.) Defendants move to dismiss Plaintiffs’ Consolidated Complaint 6 under Federal Rule of Civil Procedure 12(b)(6). (ECF No. 22.) 7 I. BACKGROUND 8 Regulus is a biopharmaceutical company that was developing a drug (“RG- 9 101”) to treat the hepatitis C virus (“HCV”). (ECF No. 19, ¶¶ 2, 27-28.) As part of 10 the process of seeking approval from the United States Food and Drug 11 Administration (“FDA”) to market and sell RG-101 to the public, Regulus was 12 required to submit an investigational new drug application (“IND”) to obtain 13 approval to test RG-101 on human subjects (i.e., to engage in “clinical” studies). 14 See 21 C.F.R. §§ 312.20, 312.40. Generally, an IND must contain, inter alia, “[a] 15 summary of the pharmacological and toxicological effects of the drug in animals, 16 and to the extent known, in humans.”2 21 C.F.R. § 312.23(a)(5)(ii). 17 In late 2015 and early 2016, Regulus initiated its first clinical trials. (ECF No. 18 19, ¶¶ 3-4.) On February 17, 2016, Regulus issued a press release in which it 19 announced interim results from one of the clinical trials. (Id. ¶ 56.) Notably, the 20 / / 21 / / 22 / / 23

24 25 appointment as CEO on May 4, 2017. (Id. ¶ 18.) Defendant Huang was Regulus’s Vice President of Clinical Development during the Class Period. (Id. ¶ 19.) 26 2 The pharmacological and toxicological effects of the drug under investigation are 27 often gleaned from initial non-human studies conducted in laboratories and/or utilizing animals, referred to as “preclinical” or “nonclinical” studies. (See ECF No. 28 1 press release included a statement that “[t]o date, RG-101 has been generally well 2 tolerated with the majority of adverse events considered mild or moderate, and 3 with no study discontinuations.”3 (Id. ¶¶ 56-57; see also id. ¶ 64.) In a conference 4 call discussing the interim results held that same day, however, Defendants 5 disclosed two serious adverse events (each, an “SAE”) experienced during the 6 study and that an independent investigator had determined that one of the SAEs 7 was “possibly” related to RG-101.4 (Id. ¶¶ 58, 61; ECF No. 22-4, at 7, 11.) 8 Nevertheless, Defendant Huang downplayed the importance of these SAEs during 9 the call, noting that they “occurred several weeks after dosing” and in a patient 10 population suffering from “chronic hepatitis C [and] other medical issues.” 11 Defendant Grint did the same, stating that the SAEs were “not concerning” to 12 Defendants because the test subjects had HCV and thus “[t]here’s multiple other 13 comorbidities as you follow a set of patients like this over a prolonged period of 14 time, [such that] you are going to get serious adverse events reported by 15 definition.” (ECF No. 19, ¶ 61; ECF No. 22-4, at 11, 14.) Defendant Grint repeated 16 17 18 3 Regulus reiterated similar statements in subsequent press releases and 19 regulatory filings. (See ECF No. 19, ¶ 57 (February 17, 2016 Form 8-K filing), ¶ 64 “February 22, 2016 press release and Form 8-K filing), ¶ 70 (February 23, 2016 20 Form 10-K filing), ¶ 74 (April 15, 2016 press release), ¶ 77 (April 15, 2016 21 conference call), ¶ 81 (May 2, 2016 press release), ¶ 84 (May 2, 2016 earnings call), ¶ 88 (May 2, 2016 Form 10-Q filing), § 112 (November 1, 2016 Form 10-Q 22 filing), ¶ 128 (March 2, 2017 Form 10-K filing). 23 4 An adverse event is “serious” if “it results in . . . [d]eath, a life-threatening adverse event, inpatient hospitalization or prolongation of existing hospitalization, a 24 persistent or significant incapacity or substantial disruption of the ability to conduct 25 normal life functions, or a congenital anomaly/birth defect. Important medical events that may not result in death, be life-threatening, or require hospitalization 26 may be considered serious when, based upon appropriate medical judgment, they 27 may jeopardize the patient or subject and may require medical or surgical intervention to prevent one of the outcomes listed in this definition.” 21 C.F.R. § 28 1 similar messaging in an earnings call held on February 22, 2016. (ECF No. 19, ¶ 2 67 (“[W]e’re certainly not worried about the safety profile of RG-101 or in fact the 3 reports SAEs. . . . Just to remind you, these are patients that have chronic hepatitis 4 C, they have multiple other co-morbid conditions, and we’re following them for very 5 prolonged periods of time, and we’d expect to see other things reported over a 6 follow-up period.”).) 7 On April 15, 2016, Regulus hosted a conference call to present additional 8 interim results from the clinical trials, including further discussion of the two SAEs 9 identified during the February 16 conference call. (Id. ¶ 77; see also ECF No. 22- 10 5 (April 15, 2016 conference call edited transcript).) During that call, Defendant 11 Grint stated that while ”[i]nvestigators . . . determined that” the first SAE, a 12 “transient episode of dyspnea,”5 was “not related to” RG-101, further investigation 13 was ongoing to determine the cause of the second SAE, “an event of jaundice.”6 14 (ECF No. 19, ¶ 77-78; see also Doc. 22-6, at 16 (Regulus slide presentation 15 accompanying conference call stated “Jaundice (Daklinza arm) – Possibly related 16 to Study Drug[.] 56-year old male presented with jaundice, fatigue, abdominal 17 pain, and nausea 21 days after completion of therapy. Clinical chemistry showed 18 significantly elevated total and direct bilirubin with minimal changes in 19 transaminases. Ultrasound indicated potential sludge/debris in biliary tract and 20 21 5 i.e., difficult or labored breathing. 22 6 “Jaundice occurs when there is too much bilirubin (a yellow pigment) in the blood 23 – a condition called hyperbilirubinemia.” (ECF No. 19, ¶ 43.) “Bilirubin is formed when hemoglobin (the part of red blood cells that carries oxygen) is broken down 24 as part of the normal process of recycling old or damaged red blood cells. Bilirubin 25 is carried in the bloodstream to the liver, where it binds with bile.

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In Re Regulus Therapeutics Inc. Securities Litigation, Counsel Stack Legal Research, https://law.counselstack.com/opinion/in-re-regulus-therapeutics-inc-securities-litigation-casd-2019.