Rocket Pharmaceuticals to Present Preliminary Phase 1 Data of RP-L102 “Process B” for Fanconi Anemia at the 61st American Society of Hematology Annual Meeting

—Rocket Management to Hold a Breakout Session with KOLs to Discuss Data Following Presentation at 8:30 p.m. EST on December 8th

NEW YORK--()--Rocket Pharmaceuticals, Inc. (NASDAQ: RCKT) (“Rocket”), a leading U.S.-based multi-platform clinical-stage gene therapy company, today announces presentations at the upcoming 61st American Society of Hematology (ASH) Annual Meeting being held December 7-10, 2019 in Orlando, Florida. The two poster presentations will highlight clinical data from the Phase 1 study of RP-L102 utilizing “Process B” for the treatment of Fanconi Anemia (FA), as well as long-term follow-up data from the Phase 1/2 EUROFANCOLEN trial.

Details for Rocket’s poster presentations are as follows:
Title:
Changing the Natural History of Fanconi Anemia Complementation Group-A with Gene Therapy: Early Results of U.S. Phase I Study of Lentiviral-Mediated Ex-Vivo FANCA Gene Insertion in Human Stem and Progenitor Cells
Session Title: Gene Therapy and Transfer: Poster II
Presenter: Sandeep Soni, M.D.
Session Date: Sunday, December 8, 2019
Session Time: 6:00 p.m. – 8:00 p.m. EST
Location: Orange County Convention Center, Hall B

Title: Hematopoietic Engraftment of Fanconi Anemia Patients through 3 Years after Gene Therapy
Session Title: Gene Therapy and Transfer: Poster III
Presenter: Paula Río, Ph.D.
Session Date: Monday, December 9, 2019
Session Time: 6:00 p.m. – 8:00 p.m. EST
Location: Orange County Convention Center, Hall B

The Sunday poster session will be followed by a breakout session to give investors and analysts the opportunity to ask questions and discuss the data. The breakout session, hosted by Rocket management, will be held on Sunday, December 8th at 8:30 p.m. EST, directly after Dr. Soni’s presentation. At the event, Dr. Soni, Clinical Associate Professor of Stem Cell Transplantation and Regenerative Medicine at the Stanford University School of Medicine and principal investigator of the U.S. Phase 1 trial of RP-L102 and Paula Río, Ph.D., Senior Scientist, División de Terapias Innovadoras en el Sistema Hematopoyético, CIEMAT/CIBERER Unidad Mixta de Terapias Avanzadas CIEMAT/IIS Fundación Jiménez Díaz will be participating in a Q&A panel. For further information, please contact investors@rocketpharma.com.

About Fanconi Anemia

Fanconi Anemia (FA) is a rare pediatric disease characterized by bone marrow failure, malformations and cancer predisposition. The primary cause of death among patients with FA is bone marrow failure, which typically occurs during the first decade of life. Allogeneic hematopoietic stem cell transplantation (HSCT), when available, corrects the hematologic component of FA, but requires myeloablative conditioning. Graft-versus-host disease, a known complication of allogeneic HSCT, is associated with an increased risk of solid tumors, mainly squamous cell carcinomas of the head and neck region. Approximately 60-70% of patients with FA have a FANC-A gene mutation, which encodes for a protein essential for DNA repair. Mutation in the FANC-A gene leads to chromosomal breakage and increased sensitivity to oxidative and environmental stress. Chromosome fragility induced by DNA-alkylating agents such as mitomycin-C (MMC) or diepoxybutane (DEB) is the ‘gold standard’ test for FA diagnosis. Somatic mosaicism occurs when there is a spontaneous correction of the mutated gene that can lead to stabilization or correction of a FA patient’s blood counts in the absence of any administered therapy. Somatic mosaicism, often referred to as ‘nature’s gene therapy’ provides a strong rationale for the development of FA gene therapy because of the selective growth advantage of gene-corrected hematopoietic stem cells over FA cells1.

1Soulier, J.,et al. (2005) Detection of somatic mosaicism and classification of Fanconi anemia patients by analysis of the FA/BRCA pathway. Blood 105: 1329-1336

About Rocket Pharmaceuticals, Inc.

Rocket Pharmaceuticals, Inc. (NASDAQ: RCKT) (“Rocket”) is an emerging, clinical-stage biotechnology company focused on developing first-in-class gene therapy treatment options for rare, devastating diseases. Rocket’s multi-platform development approach applies the well-established lentiviral vector (LVV) and adeno-associated viral vector (AAV) gene therapy platforms. Rocket's clinical programs using LVV-based gene therapy are for the treatment of Fanconi Anemia (FA), a difficult to treat genetic disease that leads to bone marrow failure and potentially cancer, Leukocyte Adhesion Deficiency-I (LAD-I), a severe pediatric genetic disorder that causes recurrent and life-threatening infections which are frequently fatal, and Pyruvate Kinase Deficiency (PKD) a rare, monogenic red blood cell disorder resulting in increased red cell destruction and mild to life-threatening anemia. Rocket’s first clinical program using AAV-based gene therapy is for Danon disease, a devastating, pediatric heart failure condition. Rocket’s pre-clinical pipeline program is for Infantile Malignant Osteopetrosis (IMO), a bone marrow-derived disorder. For more information about Rocket, please visit www.rocketpharma.com.

Rocket Cautionary Statement Regarding Forward-Looking Statements

Various statements in this release concerning Rocket's future expectations, plans and prospects, including without limitation, Rocket's expectations regarding the safety, effectiveness and timing of product candidates that Rocket may develop, to treat Fanconi Anemia (FA), Leukocyte Adhesion Deficiency-I (LAD-I), Pyruvate Kinase Deficiency (PKD), Infantile Malignant Osteopetrosis (IMO) and Danon disease, and the safety, effectiveness and timing of related pre-clinical studies and clinical trials, may constitute forward-looking statements for the purposes of the safe harbor provisions under the Private Securities Litigation Reform Act of 1995 and other federal securities laws and are subject to substantial risks, uncertainties and assumptions. You should not place reliance on these forward-looking statements, which often include words such as "believe," "expect," "anticipate," "intend," "plan," "will give," "estimate," "seek," "will," "may," "suggest" or similar terms, variations of such terms or the negative of those terms. Although Rocket believes that the expectations reflected in the forward-looking statements are reasonable, Rocket cannot guarantee such outcomes. Actual results may differ materially from those indicated by these forward-looking statements as a result of various important factors, including, without limitation, Rocket's ability to successfully demonstrate the efficacy and safety of such products and pre-clinical studies and clinical trials, its gene therapy programs, the pre-clinical and clinical results for its product candidates, which may not support further development and marketing approval, the potential advantages of Rocket's product candidates, actions of regulatory agencies, which may affect the initiation, timing and progress of pre-clinical studies and clinical trials of its product candidates, Rocket's and its licensors’ ability to obtain, maintain and protect its and their respective intellectual property, the timing, cost or other aspects of a potential commercial launch of Rocket's product candidates, Rocket's ability to manage operating expenses, Rocket's ability to obtain additional funding to support its business activities and establish and maintain strategic business alliances and new business initiatives, Rocket's dependence on third parties for development, manufacture, marketing, sales and distribution of product candidates, the outcome of litigation, and unexpected expenditures, as well as those risks more fully discussed in the section entitled "Risk Factors" in Rocket's Annual Report on Form 10-K for the year ended December 31, 2018. Accordingly, you should not place undue reliance on these forward-looking statements. All such statements speak only as of the date made, and Rocket undertakes no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise.

Contacts

Claudine Prowse, Ph.D.
SVP, Strategy & Corporate Development
investors@rocketpharma.com

Contacts

Claudine Prowse, Ph.D.
SVP, Strategy & Corporate Development
investors@rocketpharma.com