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

New target for COVID-19 vaccines identified

Next generation vaccines for COVID-19 should aim to induce an immune response against 'replication proteins', essential for the very earliest stages of the viral cycle, c...

Safety concerns raised for neuroblastoma candidate…

St. Jude Children's Research Hospital scientists looking for drugs to improve survival of children with high-risk neuroblastoma found a promising candidate in CX-5461. Th...

Johnson & Johnson COVID-19 vaccine named one o…

The editors of Time announced that the Johnson & Johnson COVID-19 vaccine has been selected as one of Time's Best Inventions of 2021. The vaccine, for which Johnson & ...

Pfizer's novel COVID-19 oral antiviral treatment c…

Pfizer Inc. (NYSE: PFE) today announced its investigational novel COVID-19 oral antiviral candidate,PAXLOVID™, significantly reduced hospitalization and death, based on a...

Researchers reveal a strategy for next-generation …

A study led by the Garvan Institute of Medical Research has revealed a guide to developing COVID-19 vaccines that both prevent the coronavirus from infecting human cells ...

A commonly found parasite could treat certain type…

Scientists have discovered that a deadly parasite, known to cause ill health in pregnant women and immunocompromised patients, could potentially be used to treat various ...

'Dancing molecules' successfully repair severe spi…

Northwestern University researchers have developed a new injectable therapy that harnesses “dancing molecules” to reverse paralysis and repair tissue after severe spinal ...

A target for potential cancer drugs may, in fact, …

In recent years, much scientific effort and funding has focused on developing drugs that target an enzyme with the unwieldy name of Src homology 2-containing protein tyro...

Abbott launches new initiative to drive diversity …

Abbott (NYSE: ABT) today announced the launch of a new initiative designed to help create a more inclusive clinical trial ecosystem through new approaches to training, ed...

Needle-free COVID-19 vaccine shows promise

A needle-free COVID-19 vaccination could be possible, with University of Queensland scientists successfully protecting mice from the virus by administering a US-developed...

Cleveland Clinic launches first-of-its kind preven…

Cleveland Clinic researchers have opened a novel study for a vaccine aimed at eventually preventing triple-negative breast cancer, the most aggressive and lethal form of ...

Novartis to sell its Roche stake in a bilateral tr…

Novartis has agreed to sell 53.3 million (approximately 33%) Roche bearer shares in a bilateral transaction to Roche for a total consideration of USD 20.7 billion. Vas...