What is the fine-grained topic of the following text: On March 30, 2018, the U.S. District Court for the District of Massachusetts granted our motion to dismiss the putative class action lawsuit filed on September 28, 2016, entitled Mazurek v. Seres Therapeutics, Inc., et.al., alleging violations of Sections 10(b), 20(a) and Rule 10b-5 of the Securities Exchange Act of 1934, as amended, by making allegedly false and misleading statements and omissions about our clinical trials for our product candidate SER-109 in our public disclosures between June 25, 2015 and July 29, 2016. Only return the topic.
Dismissal of a class action lawsuit against Seres Therapeutics, Inc. regarding alleged violations of the Securities Exchange Act of 1934