01/12/2018 17:00:00

Bellicum Announces Favorable Interim Event-Free Survival Data for Rivo-cel Treated Patients in Presentation at ASH 2018

Interim results suggest rivo-cel outcomes were comparable to a control study of transplants from matched unrelated donors, a requirement for product registration in Europe

Company on track to report final results in 2019 followed by European regulatory submission

SAN DIEGO, Dec. 01, 2018 (GLOBE NEWSWIRE) -- Bellicum Pharmaceuticals, Inc. (NASDAQ:BLCM), a leader in developing novel, controllable cellular immunotherapies for cancers and orphan inherited blood disorders, today announced late interim results from its BP-004 European registration trial, suggesting that adding rivo-celTM (rivogenlecleucel, formerly BPX-501) to stem cell transplants in patients who lack a matched donor may deliver comparable outcomes to matched unrelated donor (MUD) transplants. The data were reviewed in a presentation today at the 60th Annual Meeting of the American Society of Hematology (ASH 2018) by Mattia Algeri, M.D., Cell and Gene Therapy Unit, Ospedale Bambino Gesù, Rome, Lazio, Italy.

The interim data show a 90.9 percent event-free survival (EFS) rate at 180 days for patients treated with rivo-cel (n=166) after a stem cell transplant from a haploidentical, or partially matched, donor. These results appear comparable to an interim evaluation of patients who received a MUD transplant in the concurrently-run observational study (n=91), demonstrating an 87.7 percent EFS rate at 180 days. The Company expects to report final comparison results from both study populations and file for approval in Europe in 2019. Demonstrating non-inferiority to MUD transplantation is the primary study objective required for rivo-cel product registration in Europe.

“While a stem cell transplant is an established, often curative treatment option for children with cancers and hereditary blood diseases, the majority of patients are unable to find an HLA-matched related donor, which is associated with the best outcomes,” commented Dr. Algeri. “While matched unrelated donor transplants are an important option, only half of patients can identify a match. Further, it can take up to several months to do so, a delay that is problematic for many transplant patients. These data suggest that rivo-cel treatment may enable haploidentical stem cell transplant with overall outcomes similar to MUD, making it an attractive alternative for many of these patients.”

Study Design and Highlights

The BP-004 trial is a prospective, multicenter, European Phase 1/2 trial in pediatric patients with malignant or nonmalignant disorders. Patients received rivo-cel within a few weeks following a haplo-transplant. No post-transplant Graft versus Host Disease (GvHD) prophylaxis was used. Patients who developed visceral GvHD or were refractory to standard of care treatments were eligible to receive rimiducid. The primary endpoint was EFS at day 180 (events included transplant-related mortality or non-relapse mortality for malignant patients, severe GvHD, and life-threatening infections).

Rivo-cel was well-tolerated, with few patients experiencing non-GvHD adverse events considered to be possibly or probably related to rivo-cel. Overall GvHD rates were low, with few cases of high-grade acute GvHD or chronic GvHD. The majority of patients with visceral GvHD or who were refractory to standard of care treatment for GvHD responded to rimiducid.

The observational comparator trial (C/CP-004) was designed to collect both prospective and retrospective data from pediatric patients with either malignant or nonmalignant disease who underwent a matched unrelated donor transplant during the same time period and at the same treatment centers where the BP-004 rivo-cel study was conducted.

“These interim data increase our confidence that rivo-cel may be an approvable new treatment option for transplant patients with leukemias, lymphomas and genetic blood diseases in Europe upon final data read-out in 2019,” commented Rick Fair, Bellicum President & CEO. “If we continue to demonstrate that rivo-cel enables patients without a matched donor to achieve outcomes comparable to a MUD transplant, that would be very clinically meaningful and would fulfill a requirement for European approval. We look forward to reporting final six-month results for all patients in 2019. We also plan to continue to follow these patients to evaluate the impact of rivo-cel in preventing relapse and extending overall survival, particularly in patients with leukemia.”

A copy of this ASH presentation will be made available in the Abstracts & Presentations section of the Company’s website. The Company expects to report topline final results in early 2019 followed by publication of a comprehensive data set.

Analyst and Investor Luncheon Event and Webcast

Bellicum will host a live and webcast analyst and investor luncheon event on December 3, 2018 at 12:00 p.m. – 1:30 p.m. PST in San Diego, CA. Featured speakers include Dr. Alice Bertaina, Associate Professor of Pediatrics (Stem Cell Transplantation), Lucile Packard Children’s Hospital at the Stanford School of Medicine, as well as Bellicum senior management. A webcast replay of the event will be available in the News & Events section of the Bellicum website, and available for at least two weeks following the event.

About Rivo-cel (BPX-501)

Rivo-celTM (rivogenlecleucel) is an allogeneic polyclonal T cell product designed to reduce relapse of leukemia following a stem cell transplant. The cell treatment contains a diverse repertoire of T cells which may contribute to a robust graft vs. leukemia effect. Rivo-cel’s antiviral benefits may also reduce morbidity and mortality in patients susceptible to infection following a transplant. The product’s CaspaCIDe® safety switch enables this approach by allowing physicians to reduce the number of alloreactive cells in the event of uncontrolled GvHD. Rivo-cel addresses a major unmet need in adult and pediatric leukemia, lymphoma and genetic blood disease patients following a haploidentical stem cell transplant.

About Bellicum Pharmaceuticals

Bellicum is a clinical stage biopharmaceutical company striving to deliver cures through controllable cell therapies. The Company’s next-generation product candidates are differentiated by powerful cell signaling technologies designed to produce more effective CAR-T, TCR and allogeneic T cell therapies. Its lead product candidate, rivo-celTM, is an allogeneic polyclonal T cell therapy that has shown promising clinical trial results in reducing leukemia relapse after a stem cell transplant. Bellicum’s lead GoCAR-T® candidate, BPX-601, is designed to be a more efficacious CAR-T cell product capable of overriding key immune inhibitory mechanisms. More information can be found at www.bellicum.com.​

Forward-Looking Statement

This press release contains forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include statements regarding our intentions, beliefs, projections, outlook, analyses or current expectations concerning, among other things: our research and development activities relating to rivo-cel

TM

and rimiducid; the effectiveness of rivo-cel, its possible ranges of application and potential curative effects and safety in the treatment of diseases, including as compared to other treatment options and competitive therapies; the timing and success of our current and planned clinical trials, including the timing of receipt of data from such clinical trials and the timing of our reports of such data; the timing and success of regulatory filings; our ability to build a successful commercial organization in Europe; the presentation of our preclinical and clinical data at medical or scientific meetings and our cash uses and cash runway. Various factors may cause differences between Bellicum’s expectations and actual results as discussed in greater detail under the heading “Risk Factors” in Bellicum’s filings with the Securities and Exchange Commission, including without limitation our quarterly report on Form 10-Q for the three months ended September 30, 2018 and our annual report on Form 10-K for the year ended December 31, 2017. Any forward-looking statements that Bellicum makes in this press release speak only as of the date of this press release. Bellicum assumes no obligation to update our forward-looking statements whether as a result of new information, future events or otherwise, after the date of this press release.

Source: Bellicum Pharmaceuticals

Investors:

Chad Rubin

646-378-2947

crubin@soleburytrout.com

Media:

Brad Miles

917-570-7340

bmiles@soleburytrout.com

-or-

Amy Bonanno

914-450-0349

abonanno@soleburytrout.com

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