MedPath

Tafasitamab

Generic Name
Tafasitamab
Brand Names
Monjuvi, Minjuvi
Drug Type
Biotech
CAS Number
1422527-84-1
Unique Ingredient Identifier
QQA9MLH692
Background

Tafasitamab is a humanized, CD19-directed cytolytic monoclonal antibody intended for the treatment of B-cell malignancies. It is produced using recombinant DNA technology in Chinese hamster ovary cells, and contains an IgG1/2 hybrid Fc-domain which has been modified with 2 amino acid substitutions to enhance its cytotoxicity relative to non-engineered anti-CD19 antibodies.

The CD19 surface protein is highly expressed on the surface of B-cells, where it appears to play a role in enhancing B-cell receptor signaling. Its relative ubiquity across different stages of B-cell development, including pre-B and mature B-lymphocytes, as well as its presence in several B-cell malignancies (e.g. chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL), diffuse large B-cell lymphoma (DLBCL)) has made it a desirable target in the treatment these B-cell malignancies. Tafasatimab is designed to bind to and block the activity of the CD19 surface antigen, which ultimately results in the lysis of B-cells (both healthy and malignant).

Having previously received Breakthrough Therapy, Fast Track, and Orphan designations from the FDA, tafasatimab-cxix (Monjuvi®) received an accelerated approval on July 31st, 2020, for the treatment of relapsed or refractory DLBCL in adult patients who cannot receive autologous stem cell transplants. It must be used in combination with lenalidomide, as this combination results in greater efficacy as compared to either agent alone.

Indication

Tafasitamab is indicated, in combination with lenalidomide, for the treatment of adult patients with relapsed or refractory diffuse large B-cell lymphoma (DLBCL) not otherwise specified whom are ineligible for autologous stem cell transplant (ASCT).

Associated Conditions
Refractory Diffuse Large B-Cell Lymphoma, Not Otherwise Specified, Relapsed Diffuse large B-cell lymphoma NOS

PharmaMar Expands Global Reach of Zepzelca with Argentina Approval and Merck Partnership for Japan

• PharmaMar and partner Adium Pharma have secured conditional marketing approval for Zepzelca (lurbinectedin) in Argentina for treating metastatic small cell lung cancer, extending the drug's availability to 18 territories globally. • The company has simultaneously formed an exclusive license agreement with Merck for Zepzelca's development and commercialization in Japan, receiving an initial payment of €22 million with potential for €31 million more in milestone payments. • These strategic moves strengthen PharmaMar's position in the oncology market while providing new treatment options for patients with an aggressive form of lung cancer across multiple regions.

Knight Therapeutics Launches Minjuvi for Relapsed/Refractory DLBCL in Mexico

• Knight Therapeutics has launched Minjuvi (tafasitamab) in Mexico for adult patients with relapsed or refractory diffuse large B-cell lymphoma who are ineligible for autologous stem cell transplantation. • The approval was based on the L-MIND Phase 2 trial, which demonstrated a 60% objective response rate and 43% complete response rate when Minjuvi was used in combination with lenalidomide. • Minjuvi, a humanized Fc-modified CD19-targeting monoclonal antibody, is recognized in the 2025 NCCN Guidelines as a preferred second-line treatment option for transplant-ineligible DLBCL patients.

InnoCare's BCL2 Inhibitor ICP-248 Combination Therapy Advances to Phase III Trial for First-line CLL/SLL Treatment in China

• China's NMPA has approved InnoCare's registrational Phase III trial of BCL2 inhibitor ICP-248 (Mesutoclax) combined with orelabrutinib for first-line CLL/SLL treatment. • The ICP-248 and orelabrutinib combination demonstrated promising efficacy and safety in Phase II trials, offering potential for deeper remission in treatment-naïve CLL/SLL patients. • With global CLL incidence at 191,000 new cases annually and rising rates in China, this fixed-duration combination therapy represents a significant advancement in treatment options.

Incyte Reports Strong 2024 Growth with $4.2B Revenue, Outlines Ambitious 2025 Pipeline Milestones

• Incyte achieved total revenues of $4.2 billion in 2024, marking a 15% year-over-year growth, driven by strong performance of Jakafi ($2.8B) and Opzelura ($508M). • The company anticipates four new product launches in 2025, including Niktimvo for chronic GVHD and expanded indications for existing therapies in atopic dermatitis and lymphoma. • Incyte's R&D pipeline shows significant advancement with plans for four pivotal study readouts, three Phase 3 study initiations, and seven proof-of-concept study results expected in 2025.

Dual Targeting PD-L1 and 4-1BB Overcomes Lenalidomide Resistance in Follicular Lymphoma

• A phase 2 trial identified dendritic cells (DCs) as critical in follicular lymphoma (FL) progression under rituximab plus lenalidomide (R2) treatment, highlighting the need for new strategies. • PU.1, a transcription factor, mediates lenalidomide resistance by modulating PD-L1 and 4-1BB interaction between lymphoma cells and DCs, impacting anti-tumor immunity. • Dual targeting of PD-L1 and 4-1BB with a bispecific antibody counteracts PU.1-mediated alterations in DCs, enhancing lymphoma cell autophagy and anti-tumor activity in vitro and in vivo. • The study suggests that combining immune checkpoint modulation with lenalidomide could be a promising chemo-free immunotherapy approach for overcoming resistance in FL treatment.

Retifanlimab Plus Chemotherapy Shows Promise in Advanced Squamous Cell Anal Carcinoma

• Phase 3 POD1UM-303 trial shows retifanlimab combined with chemotherapy significantly improves progression-free survival in patients with locally recurrent or metastatic squamous cell anal carcinoma (SCAC). • The combination therapy demonstrated a median PFS of 9.3 months compared to 7.4 months with chemotherapy alone, marking a potential new standard of care. • Interim overall survival data also suggest a trend towards improvement with the addition of retifanlimab, with manageable immune-related adverse effects. • The study's success supports a planned supplemental biologics license application (sBLA) for retifanlimab, offering hope for addressing unmet needs in SCAC treatment.

Monjuvi Combination Shows Promise in Relapsed/Refractory Follicular Lymphoma

• The combination of Monjuvi, Revlimid, and Rituxan significantly reduces the risk of disease progression or death in relapsed/refractory follicular lymphoma patients. • The inMIND phase 3 trial demonstrated a median progression-free survival of 22.4 months with the Monjuvi combination, compared to 13.9 months with Revlimid and Rituxan alone. • The Monjuvi combination showed improved objective response rates and duration of response compared to the Revlimid and Rituxan doublet. • Incyte plans to file for FDA approval of Monjuvi combination for relapsed/refractory follicular lymphoma based on the inMIND trial results.

Tafasitamab Demonstrates Real-World Efficacy in Relapsed/Refractory DLBCL

• A real-world study evaluating tafasitamab in US patients with relapsed/refractory DLBCL showed a progression-free survival of 11.3 months. • The overall survival in the study population was 24.8 months, with an overall response rate of 73.5%, including complete and partial responses. • Factors such as later lines of therapy, advanced Ann Arbor stage, and bulky disease were associated with increased risk of progression and mortality. • The greatest clinical benefit was observed when tafasitamab was administered in the second line of therapy for relapsed/refractory DLBCL.

Lisocabtagene Maraleucel Shows Promise in Relapsed/Refractory Lymphomas

• Lisocabtagene maraleucel (liso-cel) demonstrates efficacy and safety in second-line treatment of relapsed/refractory large B-cell lymphoma (LBCL), aligning with pivotal trial outcomes. • The TRANSCEND FL trial indicates liso-cel achieved a significant overall response rate in relapsed/refractory marginal zone lymphoma (MZL), meeting the primary endpoint. • Five-year data from TRANSCEND-NHL-001 underscore the curative potential of liso-cel in third-line LBCL, showing a 38% overall survival rate. • Real-world data supports liso-cel's effectiveness across diverse LBCL patient subgroups, reinforcing its role as a standard-of-care treatment option.

Incyte Highlights New Tafasitamab Data in Follicular Lymphoma at ASH 2024

• Incyte will present new data from its oncology portfolio at the 2024 American Society of Hematology (ASH) Annual Meeting in San Diego. • A late-breaking oral presentation will feature results from the Phase 3 inMIND study evaluating tafasitamab in relapsed or refractory follicular lymphoma (FL). • Incyte will host a virtual analyst and investor event on December 12, 2024, to discuss key data presentations from ASH.

Delayed Treatment May Improve Outcomes for Older DLBCL Patients, Study Suggests

• A recent study indicates that older adults with Diffuse Large B-cell Lymphoma (DLBCL) who delay treatment initiation may experience better outcomes. • Patients starting treatment within one to two weeks of diagnosis showed shorter times to next-line therapy and reduced overall survival. • The research highlights the importance of real-world data in assessing treatment strategies for older DLBCL patients, often underrepresented in trials. • The study also found that patients who initiated treatment immediately were more likely to have high-risk clinical features and be treated in academic centers.

Incyte Halts Urticaria Drug Trial After Toxicology Findings, Scraps Liver Disease Program

• Incyte paused enrollment for INCB000262, a drug being tested for chronic urticaria, due to concerning toxicology results from an animal study. • The company discontinued development of INCB000547 after Phase 2 results showed it was ineffective for treating itching associated with liver disease. • These setbacks impact Incyte's strategy to diversify beyond its top-selling drug, Jakafi, and could affect a potential $1.8 billion revenue opportunity. • Despite these challenges, Incyte anticipates Phase 3 results for povorcitinib in hidradenitis suppurativa next year, which remains a key focus.

FDA Approves Incyte and Syndax's Niktimvo for Chronic Graft-versus-Host Disease

• The FDA has approved Niktimvo, developed by Incyte and Syndax Pharmaceuticals, for treating chronic graft-versus-host disease (cGVHD). • Niktimvo is intended for adult and pediatric patients (weighing at least 88.2 pounds) who have failed at least two prior systemic therapies. • Clinical trials showed a 75% response rate within the first six months, with 60% of responders remaining alive and treatment-free for at least a year. • Incyte anticipates Niktimvo could potentially replace or be combined with Jakafi, with projected sales of $650 million.

Tafasitamab Regimen Shows Promise in Improving PFS for Advanced Follicular Lymphoma Patients

A recent phase 3 trial demonstrates that adding tafasitamab-cxix to lenalidomide and rituximab significantly improves progression-free survival (PFS) in patients with relapsed or refractory follicular lymphoma, with no new safety concerns reported.
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