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MacroGenics (MGNX) Faces Class Action After Revealing Investigation of Patient Deaths in TAMARACK Study of Vobra Duo – Hagens Berman

Key Takeaway: MacroGenics, Inc. is facing a class action lawsuit after the disclosure of patient deaths in its Phase 2 TAMARACK study of vobra duo, an antibody-drug conjugate for metastatic castration-resistant prostate cancer. Following the announcement that five patients died, the company's share price fell dramatically by approximately 77%. The class action alleges that MacroGenics may have misled investors regarding the safety data from the study, leading to concerns about the drug's safety profile. An investigation into the deaths has not yet yielded further updates for investors, contributing to heightened uncertainty in the market regarding the company's communications.

Market Sentiment Analysis

CONCERNS & RISKS

  • MacroGenics faces a class action lawsuit after patient deaths in the TAMARACK study.
  • The company's share price dropped significantly (about 77%) following the disclosure of patient fatalities.
  • Investors raised concerns over the accuracy of the company's previously reported safety data.
  • The ongoing investigation into the deaths has created uncertainty about the drug's safety and investor communication.

Full Press Release Details

SAN FRANCISCO, Aug. 02, 2024 (GLOBE NEWSWIRE) -- Hagens Berman urges MacroGenics, Inc. (NASDAQ: MGNX) investors who suffered substantial losses to submit your losses now.
Class Period: Mar. 7, 2024 – May 9, 2024
Lead Plaintiff Deadline: Sept. 24, 2024
Contact the Firm Now: MGNX@hbsslaw.com
Class Action Lawsuit Against MacroGenics, Inc. (MGNX):
The litigation focuses on the accuracy of MacroGenics’ statements regarding data from its Phase 2 TAMARACK study of the antibody-drug conjugate MGC018, known as “vobra duo,” in patients with metastatic castration-resistant prostate cancer (mCRPC).
On Mar. 7, 2024, MacroGenics set investor expectations for preliminary TAMARACK data at the upcoming meeting of the American Society of Clinical Oncology (“ASCO”). Management said “[g]iven the dosing right now of 2.7 mg/kg Q4 and 2 mg/kg Q4 and with the expectations if the safety is improved as we expect we should be actually delivering as much or more of the 2.7 mg/kg Q4 as compared to historical treatment with the 3 mg/kg Q3.”
On Apr. 3, 2024, MacroGenics released interim safety data from the TAMARACK study, as detailed in an abstract submitted to ASCO on Feb. 6, 2024. The company stated, “Preliminary safety data from TAMARACK suggest that reducing the dose and frequency of vobra duo improves its safety and tolerability in men with mCRPC.” This announcement led to a significant increase in MacroGenics’ share price, which rose by $4.11, or approximately 30%, on Apr. 4, 2024.
However, the positive sentiment was short-lived. On May 10, 2024, MacroGenics disclosed that five patients in the study had died. This revelation caused the company’s share price to plummet by $11.36, or about 77%, on the same day, prompting numerous analyst downgrades.
Additionally, Seeking Alpha reported that “Stifel was quick to downgrade MacroGenics (MGNX) after the TAMARACK readout, which, according to the firm, raised concerns over the drug’s safety and tolerability and appeared vastly different from previously disclosed abstract results.”
While the company said it was investigating the deaths of three patients in the study, it has not yet provided an update to investors.
“We’re investigating whether MacroGenics may have misled investors about its Phase 2 TAMARACK interim safety data,” said Reed Kathrein, the Hagens Berman partner leading the investigation.
If you invested in MacroGenics and have substantial losses submit your losses now »
If you’d like more information about the MacroGenics case and our investigation, read more »
Whistleblowers: Persons with non-public information regarding MacroGenics should consider their options to help in the investigation or take advantage of the SEC Whistleblower program. Under the new program, whistleblowers who provide original information may receive rewards totaling up to 30 percent of any successful recovery made by the SEC. For more information, call Reed Kathrein at 844-916-0895 or email MGNX@hbsslaw.com.
Hagens Berman is a global plaintiffs’ rights complex litigation firm focusing on corporate accountability. The firm is home to a robust practice and represents investors as well as whistleblowers, workers, consumers and others in cases achieving real results for those harmed by corporate negligence and other wrongdoings. Hagens Berman’s team has secured more than $2.9 billion in this area of law. More about the firm and its successes can be found at hbsslaw.com. Follow the firm for updates and news at @ClassActionLaw.
Reed Kathrein, 844-916-0895

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Frequently Asked Questions

What is the Class Period for MacroGenics investors?

The Class Period for MacroGenics investors is from March 7, 2024, to May 9, 2024.

What is the deadline for lead plaintiff submissions?

The deadline for lead plaintiff submissions is September 24, 2024.

Why did MacroGenics shares drop significantly?

MacroGenics shares dropped significantly after the announcement of five patient deaths in the study.

What was the TAMARACK study about?

The TAMARACK study focused on the safety of the antibody-drug conjugate MGC018 for mCRPC.

How can whistleblowers contribute to the investigation?

Whistleblowers with information can assist the investigation and may receive rewards from the SEC.

Last updated: Aug 2, 2024