Pfizer announces positive top-line results for potential biosimilar to Rituxan® / MabThera®

PfizerPfizer Inc. has announced that REFLECTIONS B3281006, a comparative safety and efficacy study of PF-05280586 versus MabThera® (rituximab-EU), met its primary endpoint. PF-05280586 is being developed by Pfizer as a potential biosimilar to Rituxan® (rituximab-US) / MabThera® (1). The trial demonstrated equivalence in overall response rate (ORR) for the first-line treatment of patients with CD20-positive, low tumor burden, follicular lymphoma.

"We are pleased to report on our fifth proposed biosimilar monoclonal antibody (mAb) with positive study results. These results reinforce the potential of our proposed rituximab biosimilar in providing a safe and effective treatment option for patients," said Amrit Ray, MD, global president, Pfizer Essential Health Research and Development. "As a global leader in novel biologics, and with one of the broadest global portfolios in oncology, we are delivering on our commitment to advancing high-quality medicines for the millions of patients with cancer around the world today and in the future."

Pfizer's biosimilars pipeline consists of seven distinct biosimilar molecules in mid to late stage development, with three of these in oncology, as well as several others in early stage development.

About the REFLECTIONS B3281006 Study

REFLECTIONS B3281006 is a randomized, double-blind clinical trial evaluating the efficacy, safety, pharmacokinetics and immunogenicity of PF-05280586 versus MabThera® (rituximab-EU)for the first-line treatment of patients with cd20-positive, low tumor burden, follicular lymphoma. The primary endpoint measure, ORR, is defined according to the revised response criteria for malignant lymphoma [Time Frame: Week 26]. Results of the study will be presented in full at a future medical meeting or summarized in publication.

More information about the PF-05280586 REFLECTIONS B3281006 study can be found at www.clinicaltrials.gov.

About PF-05280586

PF-05280586 is a monoclonal antibody (mAb) that is in development as a potential biosimilar to Rituxan®/MabThera®. Rituxan®/MabThera® is indicated for the treatment of patients with certain types of CD20-positive non-Hodgkin’s lymphoma; CD20-positive chronic lymphocytic leukemia; rheumatoid arthritis; granulomatosis with Polyangiitis and Microscopic Polyangiitis; and other region-specific indications.

PF-05280586 is an investigational compound and has not received regulatory approval in any country. Biosimilarity has not yet been established by regulatory authorities.

About Pfizer: Working together for a healthier world®

At Pfizer, we apply science and our global resources to bring therapies to people that extend and significantly improve their lives. We strive to set the standard for quality, safety and value in the discovery, development and manufacture of health care products. Our global portfolio includes medicines and vaccines as well as many of the world's best-known consumer health care products. Every day, Pfizer colleagues work across developed and emerging markets to advance wellness, prevention, treatments and cures that challenge the most feared diseases of our time. Consistent with our responsibility as one of the world's premier innovative biopharmaceutical companies, we collaborate with health care providers, governments and local communities to support and expand access to reliable, affordable health care around the world. For more than 150 years, we have worked to make a difference for all who rely on us.

1. Rituximab is marketed in the U.S. under the brand name Rituxan® and marketed in the E.U. and other regions under the brand name MabThera®. Rituxan® and MabThera® are registered trademarks of Genentech, Inc.

Most Popular Now

ACE2 protein protects against severe COVID-19

Female COVID-19 patients face less severe disease complications and a lower risk of dying than male patients thanks to hormones and chromosomes that contribute to a stron...

Neutralizing antibodies protect against severe COV…

Understanding the body's immune response to SARS-CoV-2, the virus that causes COVID-19, is key to developing effective treatments and long-lasting vaccines. Of particular...

How SARS-CoV-2 interacts with cells

SARS-CoV-2 infections pose a global threat to human health and a formidable research challenge. One of the most urgent tasks is to gain a detailed understanding of the mo...

Valneva initiates Phase 1/2 clinical study of inac…

Valneva SE, a specialty vaccine company focused on prevention against diseases with major unmet needs, today announced the initiation of a Phase 1/2 clinical study for it...

Vir Biotechnology and GSK announce start of NIH-sp…

Vir Biotechnology, Inc. (Nasdaq: VIR) and GlaxoSmithKline plc (LSE/NYSE: GSK) today announced that the first patient has been dosed in a new sub-trial of the National Ins...

Sustained cellular immune dysregulation in individ…

COVID-19, which has killed 1.7 million people worldwide, does not follow a uniform path. Many infected patients remain asymptomatic or have mild symptoms. Others, espe...

Pfizer and BioNTech receive CHMP positive opinion …

Pfizer Inc. (NYSE: PFE) and BioNTech SE (Nasdaq: BNTX) announced today that the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EM...

Pfizer and BioNTech to supply the U.S. with 100 mi…

Pfizer Inc. (NYSE: PFE) and BioNTech SE (Nasdaq: BNTX) today announced a second agreement with the U.S. government to supply an additional 100 million doses of the compan...

Pfizer and BioNTech receive authorization in the E…

Pfizer Inc. (NYSE: PFE) and BioNTech SE (Nasdaq: BNTX) announced today that the European Commission (EC) has granted a conditional marketing authorization (CMA) to Pfizer...

New virtual screening strategy identifies existing…

A novel computational drug screening strategy combined with lab experiments suggest that pralatrexate, a chemotherapy medication originally developed to treat lymphoma, c...

Novavax announces initiation of PREVENT-19 pivotal…

Novavax, Inc. (Nasdaq: NVAX), a late-stage biotechnology company developing next-generation vaccines for serious infectious diseases, today announced initiation of PREVEN...

AstraZeneca's COVID-19 vaccine authorised for emer…

AstraZeneca's COVID-19 vaccine has been approved for emergency supply in the UK, with the first doses being released today so that vaccinations may begin early in the New...