CYTOMX THERAPEUTICS ALERT: Bragar Eagel & Squire, P.C. Announces That a Class Action Lawsuit Has Been Filed Against CytomX Therapeutics, Inc. and Encourages Investors to Contact the Firm

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Bragar Eagel & Squire, P.C., a nationally recognized shareholder rights law firm, announces that a class action lawsuit has been filed in the United States District Court for the Northern District of California on behalf of investors that purchased CytomX Therapeutics, Inc. (NASDAQ: CTMX) securities between May 17, 2018 and May 13, 2020 (the Class Period). Investors have until July 20, 2020 to apply to the Court to be appointed as lead plaintiff in the lawsuit.

Click here to participate in the action.

CytomX operates as an oncology-focused biopharmaceutical company in the U.S. The Company develops a novel class of investigational antibody therapeutics based on its Probody technology platform for the treatment of cancer. CytomXs lead product candidates in the clinical stage include, among others, CX-072 and CX-2009.

CytomX has been evaluating CX-072 in its PROCLAIM series clinical program for several years. For example, the PROCLAIM-CX-072-001 clinical trial was designed to assess the tolerability and preliminary antitumor activity of multiple doses of CX-072 as a monotherapy or as a combination therapy with ipilimumab (which Bristol-Myers Squibb Company markets under the brand name Yervoy) or vemurafenib (which Roche markets under the brand name Zelboraf) in patients with advanced, unresectable solid tumors or lymphoma. The Company also began conducting a Phase 2 clinical trial called PROCLAIM-CX-072-002, which was initiated in October 2019, and is an open-label, multi-center clinical trial evaluating CX-072 in combination with ipilimumab in patients with unresectable or metastatic melanoma.

Likewise, CystomX had been evaluating CX-2009 under its own PROCLAIM brand clinical program. This program includes the PROCLAIM-CX-2009-001 clinical trial, which is a Phase 1/2 trial evaluating the tolerability and preliminary antitumor activity of CX-2009 as a monotherapy, which CytomX initiated in June 2017. This clinical program also proceeded in multiple partsParts A and A2, which are monotherapy dose escalation studies; and Part B, which is a Phase 2 expansion study of CX-2009 monotherapy at 7 mg/kg administered every three weeks in up to 40 patients with hormone receptor (ER, PR) positive, HER2 negative breast cancer, which defendants announced in December 2019 based on the tolerability and activity data from Part A and A2 of the study.

On May 13, 2020, CytomX made available abstracts for the Companys clinical presentations for CX-072 and CX-2009. Results from the PROCLAIMCX-072 clinical program showed a response rate of 8.8%, compared to a response rate of 18.5% in patients receiving the combination of CX-072 and ipilimumab. Meanwhile, results from the PROCLAIM-CX-2009 clinical program showed evidence of clinical activity at doses at least 4 mg/kg 3x/week, but also suggested a significantly higher rate of serious or greater treatment related toxicity to the eyes at dose equivalents at least 8 mg/kg 3x/week.

Following the release of the foregoing data, CytomXs stock price fell $5.21 per share, or 36.08%, to close at $9.23 per share on May 14, 2020.

The complaint, filed on May 21, 2020, alleges that throughout the Class Period, defendants made materially false and misleading statements regarding the Companys business, operational and compliance policies. Specifically, defendants made false and/or misleading statements and/or failed to disclose that: (i) CytomX had downplayed issues with CX-072s efficacy observed in the PROCLAIM-CX-072 clinical program; (ii) CytomX had similarly downplayed issues with CX-2009s efficacy and safety observed in the PROCLAIM-CX-2009 clinical program; and (iii) as a result, the Companys public statements were materially false and misleading at all relevant times.

If you purchased CytomX securities during the Class Period, are a long-term stockholder, have information, would like to learn more about these claims, or have any questions concerning this announcement or your rights or interests with respect to these matters, please contact Melissa Fortunato or Marion Passmore by email at [email protected], telephone at (212) 355-4648, or by filling out this contact form. There is no cost or obligation to you.

About Bragar Eagel & Squire, P.C.:

Bragar Eagel & Squire, P.C. is a nationally recognized law firm with offices in New York and California. The firm represents individual and institutional investors in commercial, securities, derivative, and other complex litigation in state and federal courts across the country. For more information about the firm, please visit Attorney advertising. Prior results do not guarantee similar outcomes.

Bragar Eagel & Squire, P.C.

Melissa Fortunato, Esq.

Marion Passmore, Esq.

(212) 355-4648

[email protected]