Syndax Pharmaceuticals Data Breach Investigation

Turke & Strauss LLP, a leading data breach law firm, is investigating Syndax Pharmaceuticals, Inc. (“Syndax”) regarding its recent data breach. The Syndax data breach involved sensitive personal identifiable information belonging to an undetermined number of individuals.


Syndax is a biotechnology research and pharmaceutical company based in Massachusetts. Founded in 2005, Syndax is a clinical stage oncology innovator developing first-in-class therapies for acute leukemias and chronic graft-versus-host disease.2 With a steadfast commitment to its mission of obtaining regulatory approval and commercializing drugs that extend and improve the lives of cancer patients, Syndax is an oncology leader advancing differentiated and targeted cancer therapies.2 Headquartered in Waltham, Massachusetts, Syndax employs over 50 individuals.


Recently, Syndax discovered that it had experienced a data breach in which sensitive personal identifiable information in its systems may have been accessed. Through its investigation, Syndax determined that an unauthorized party may have accessed this sensitive information on or about January 29, 2024. On February 22, 2024, Syndax began notifying individuals whose information may have been impacted. The type of information potentially exposed includes:

  • Name
  • Social Security number
  • Address

If you received a breach notification letter from Syndax Pharmaceuticals, Inc.:

We would like to speak with you about your rights and potential legal remedies in response to this data breach. Please fill out the form, below, or contact us at (608) 237-1775 or

If you were impacted by the Syndax data breach, you may consider taking the following steps to protect your personal information.

  1. Carefully review the breach notice and retain a copy;
  2. Enroll in any free credit monitoring services provided by Syndax Pharmaceuticals, Inc.:
  3. Change passwords and security questions for online accounts;
  4. Regularly review account statements for signs of fraud or unauthorized activity;
  5. Monitor credit reports for signs of identity theft; and
  6. Contact a credit bureau(s) to request a temporary fraud alert.

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