The Schall Law Firm, a national shareholder rights litigation firm, announces that it is investigating claims on behalf of investors of Blueprint Medicines Corporation (“Blueprint” or “the Company”) (NASDAQ: BPMC) for violations of the securities laws.

The investigation focuses on whether the Company issued false and/or misleading statements and/or failed to disclose information pertinent to investors. Blueprint announced top-line results from the registrational Part 2 of its PIONEER clinical trial of AYVAKIT® (avapritinib) on August 17, 2022. The Company disclosed that the absolute improvement in the symptom score fell from 19.7 in the first part of the trial to 15.6 in part 2. Based on this news, shares of Blueprint fell by 10% on the same day.

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We also encourage you to contact Brian Schall of the Schall Law Firm, 2049 Century Park East, Suite 2460, Los Angeles, CA 90067, at 310-301-3335, to discuss your rights free of charge. You can also reach us through the firm's website at www.schallfirm.com, or by email at bschall@schallfirm.com.

The class in this case has not yet been certified, and until certification occurs, you are not represented by an attorney. If you choose to take no action, you can remain an absent class member.

The Schall Law Firm represents investors around the world and specializes in securities class action lawsuits and shareholder rights litigation.

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