MRSN NEWS: The Klein Law Firm Initiates an Investigation Involving Possible Securities Fraud Violations by Officers of Mersana Therapeutics, Inc.

NEW YORK, June 27, 2023 /PRNewswire/ -- The Klein Law Firm announces that it is investigating allegations that Mersana Therapeutics, Inc. ("Mersana") (NASDAQ: MRSN) violated federal securities laws.

CURRENT INVESTIGATION DETAILS:On June 15, 2023, Mersana issued a press release "announc[ing] that the U.S. Food and Drug Administration (FDA) has issued a partial clinical hold pausing new patient enrollment in UP-NEXT and UPGRADE-A, the company's ongoing clinical trials of UpRi in platinum-sensitive ovarian cancer. UPLIFT, Mersana's ongoing clinical trial of UpRi in platinum-resistant ovarian cancer, completed enrollment in October 2022." Mersana stated that "[t]he partial clinical hold follows a submission by Mersana of a recent aggregate safety report of all patients dosed with UpRi (approximately 560 patients) evaluating bleeding events" and that "Mersana's recent assessment determined that serious bleeding events appear to occur at a higher rate than background. While most bleeding cases in this aggregate safety analysis were low-grade, five (<1%) Grade 5 (fatal) bleeding events were observed among the approximately 560 patients dosed to date. The causes of bleeding events remain under investigation."  On this news, Mersana's stock price fell $5.66 per share, or 59.27%, to close at $3.89 per share on June 15, 2023.

HOW TO PROTECT YOUR FINANCIAL INTERESTS: For additional information about the potential claims on behalf of MRSN investors, please contact J. Klein, Esq. by telephone at 212-616-4899 or click this link: https://www.kleinstocklaw.com/pslra-1/mersana-lawsuit-loss-submission-form?id=41336&from=4.

ABOUT KLEIN LAW FIRM
J. Klein, Esq. represents investors and participates in securities litigations involving financial fraud throughout the nation. The Klein Law Firm is a boutique litigation firm with experience in a wide range of areas including securities law, corporate finance and commercial litigation. Since 2011, our experienced attorneys have achieved superior results for our clients with a personalized focus. Attorney advertising. Prior results do not guarantee similar outcomes.

CONTACT:
J. Klein, Esq.
535 Fifth Avenue
4th Floor
New York City, NY 10017
[email protected]
Telephone: (212) 616-4899
www.kleinstocklaw.com

SOURCE The Klein Law Firm

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