CYAD Celyad Oncology SA

Celyad (Euronext Brussels and Paris, and NASDAQ:CYAD), a leader in the discovery and development of engineered cell therapies, with clinical programs in cardiovascular disease and immuno-oncology, today announces that a methods paper on the Congestive Heart Failure Cardiopoietic Regenerative Therapy (CHART-1) clinical trial design has been published in the European Journal of Heart Failure (EJHF 2015).

CHART-1 (Congestive Heart failure Cardiopoietic Regenerative Therapy) is a patient prospective, controlled multi-centre, randomized, double-blinded Phase III clinical trial comparing treatment with C-Cure® to a sham treatment. The trial has recruited 240 patients with chronic advanced symptomatic heart failure in Europe and Israel. The primary endpoint of the trial is a composite endpoint including mortality, morbidity, quality of life, Six Minute Walk Test and left ventricular structure and function at nine months post-procedure. The next milestone in the clinical trial will be the release of the full clinical data set, anticipated for mid-2016.

Dr. Christian Homsy, CEO of Celyad, said: “The publication of the CHART-1 methods paper in the European Journal of Heart Failure is a scientific acknowledgement of the work that has been done around the design of our clinical trial for ischemic heart failure. We are proud of this achievement and we thank all the people who have been involved in the writing process.”

Dr. Warren Sherman, Chief Medical Officer at Celyad, added: “The CHART-1 Study brings together two major scientific innovations: cells designed specifically for cardiac repair (C-Cure) and an injection catheter (C-CathezTM) designed specifically to increase the retention of cells by the heart.  It is most gratifying that such a prestigious journal has chosen to publish this paper.”

To access the press release on our website and to download Celyad’s abstract on Congestive Heart Failure Cardiopoietic Regenerative Therapy (CHART-1) trial design, please click here (pdf – 358 Ko).

For more information, please contact:

For Europe : Consilium Strategic Communications Amber Fennell, Chris Gardner, Chris Welsh, and Laura Thornton -  T: +44 (0)20 3709 5700 – celyad@consilium-comms.com

For the U.S. : The Ruth Group Lee Roth (Investors), and Kirsten Thomas (Media) - T: +1 646 536 7012 / 7014 - celyad@theruthgroup.com

For France : NewCapPierre Laurent and Nicolas Mérigeau -  T: + 33(0)1 44 71 94 94  - celyad@newcap.eu

For Belgium : ComfiGunther De Backer: t.: +32 (0)2 290 90 90 – gunther@comfi.be

CelyadChristian Homsy, CEO and Patrick Jeanmart, CFO : T : +32 (0)10 39 41 00  investors@celyad.com

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About Celyad

Founded in 2007, and based in Belgium, Celyad is a leader in engineered cell therapy with clinical programs initially targeting indications in cardiology and oncology. Celyad is developing its lead cardiovascular disease product candidate, C-Cure®, for the treatment of ischemic heart failure, and has completed enrollment of a Phase III trial in Europe and Israel. In addition, the Company is developing a novel portfolio of CAR T-cell therapies that utilize human Natural Killer cell receptors for the treatment of numerous blood and solid cancers. Its lead oncology product candidate, NKG2D CAR T-cell, entered a Phase I clinical trial in April 2015.

Celyad’s ordinary shares are listed on Euronext Brussels and Euronext Paris under the ticker symbol CYAD and Celyad’s American Depositary Shares are listed on the NASDAQ Global Market under the ticker symbol CYAD.

To learn more about Celyad, please visit www.celyad.com

Forward looking statements

In addition to historical facts or statements of current condition, this press release contains forward-looking statements, including statements about the potential safety and feasibility of NKG2D CAR T-cell therapy and C-Cure and the clinical potential of the Company’s technology platform generally and the timing of future clinical trials, which reflect our current expectations and projections about future events, and involve certain known and unknown risks, uncertainties and assumptions that could cause actual results or events to differ materially from those expressed or implied by the forward-looking statements.

In particular it should be noted that the 30-day safety data described in the release are preliminary in nature and the Phase 1 trial is not completed. There is limited data concerning safety and feasibility of NKG2D CAR T-cell therapy. These data may not continue for these subjects or be repeated or observed in ongoing or future studies involving our NKG2D CAR T-cell therapy, C-Cure or other product candidates. It is possible that safety issues or adverse events may arise in the future.

These forward-looking statements are further qualified by important factors, which could cause actual results to differ materially from those in the forward-looking statements, including risks associated with conducting clinical trials; the risk that safety, bioactivity, feasibility  and/or efficacy demonstrated in earlier clinical or pre-clinical studies may not be replicated in subsequent studies; risk associated with the timely submission and approval of anticipated regulatory filings; the successful initiation and completion of clinical trials, including Phase III clinical trials for C-Cure® and Phase I clinical trial for NKG2D CAR T-cell; risks associated with the satisfaction of regulatory and other requirements; risks associated with the actions of regulatory bodies and other governmental authorities; risks associated with obtaining, maintaining and protecting intellectual property, our ability to enforce our patents against infringers and defend our patent portfolio against challenges from third parties; risks associated with competition from others developing products for similar uses; risks associated with our ability to manage operating expenses;, and risks associated with our ability to obtain additional funding to support our business activities and establish and maintain strategic business alliances and business initiatives. A further list and description of these risks, uncertainties and other risks can be found in the Company’s Securities and Exchange Commission filings and reports, including in the Company’s prospectus filed with the SEC on June 19, 2015 and future filings and reports by the Company. Given these uncertainties, the reader is advised not to place any undue reliance on such forward-looking statements. These forward-looking statements speak only as of the date of publication of this document. The Company expressly disclaims any obligation to update any such forward-looking statements in this document to reflect any change in its expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based, unless required by law or regulation.

C3BS-CQR-1, C-Cure, NKG2D CAR T-cell, C-Cathez , OnCyte, Celyad, Cardio3 BioSciences and the Cardio3 BioSciences, Celyad, C-Cathez, CHART-1, CHART-2 and OnCyte logos are signs internationally protected under applicable Intellectual Property Laws. Mayo Clinic holds equity in Celyad as a result of intellectual property licensed to the Company.