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Last Updated: February 12, 2025

ELZONRIS Drug Profile


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Summary for Tradename: ELZONRIS
High Confidence Patents:0
Applicants:1
BLAs:1
Recent Clinical Trials: See clinical trials for ELZONRIS
Recent Clinical Trials for ELZONRIS

Identify potential brand extensions & biosimilar entrants

SponsorPhase
Stemline Therapeutics, Inc.Phase 1
Jonsson Comprehensive Cancer CenterPhase 1
Therapeutic Advances in Childhood Leukemia ConsortiumPhase 1

See all ELZONRIS clinical trials

Pharmacology for ELZONRIS
Mechanism of ActionCD123 Interactions
Established Pharmacologic ClassCD123 Interaction
Cytotoxin
Chemical StructureCytotoxins
Note on Biologic Patents

Matching patents to biologic drugs is far more complicated than for small-molecule drugs.

DrugPatentWatch employs three methods to identify biologic patents:

  1. Brand-side disclosures in response to biosimilar applications
  2. These patents were identified from disclosures by the brand-side company, in response to a potential biosimilar seeking to launch. They have a high certainty of blocking biosimilar entry. The expiration dates listed are not estimates — they're expiration dates as indicated by the brand-side company.

  3. General brand-side disclosures
  4. These patents were identified from searching drug labels and other general disclosures from the brand-side company. This list may exclude some of the patents which block biosimilar launch, and some of these patents listed may not actually block biosimilar launch. The expiration dates listed for these patents are estimates, based on the grant date of the patent.

  5. Patents from broad patent text search
  6. For completeness, these patents were identified by searching the patent literature for mentions of the branded or ingredient name of the drug. Some of these patents protect the original drug, whereas others may protect follow-on inventions or even inventions casually mentioning the drug. The expiration dates listed for these patents are estimates, based on the grant date of the patent.

1) High Certainty: US Patents for ELZONRIS Derived from Brand-Side Litigation

No patents found based on brand-side litigation

2) High Certainty: US Patents for ELZONRIS Derived from Company Disclosures

No patents found based on company disclosures

3) Low Certainty: US Patents for ELZONRIS Derived from Patent Text Search

No patents found based on company disclosures

Market Dynamics and Financial Trajectory for the Biologic Drug: ELZONRIS

Introduction

ELZONRIS (tagraxofusp), developed by Stemline Therapeutics, is a groundbreaking biologic drug that has made significant strides in the treatment of Blastic Plasmacytoid Dendritic Cell Neoplasm (BPDCN), a rare and aggressive blood cancer. Here, we delve into the market dynamics and financial trajectory of ELZONRIS, highlighting its commercial and clinical milestones.

Market Context: Biologics in Oncology

Biologics have become a dominant force in the pharmaceutical market, particularly in oncology. These large molecules have shown remarkable growth, with biologics now representing 42% of the total medicines market, up from 30% in 2014[3].

BPDCN Market Overview

The global BPDCN market is projected to grow at a CAGR of 7.7% from 2024 to 2030, driven by increasing incidence rates, advancements in treatment options, and growing awareness and diagnosis of rare hematological malignancies[4]. ELZONRIS, as the first and only CD123-targeted agent approved for BPDCN, is at the forefront of this market.

Commercial Launch and Revenue

ELZONRIS was commercially launched in the United States in January 2019. The drug generated significant revenue in its first year, with estimated net revenues of $43.2 million for the year-ended December 31, 2019. This includes $11.8 million in net revenues for the fourth quarter of 2019[1][2].

Market Penetration and Growth Potential

Despite the solid uptake in the first year, the market for ELZONRIS is subject to significant quarterly variance due to the orphan nature and unique features of BPDCN. However, Stemline Therapeutics is actively implementing strategies to expand and further penetrate this emerging market. According to Robert Francomano, Chief Commercial Officer, new medical claims data support market size estimates, indicating significant growth potential ahead[1][2].

Clinical Milestones and Expansion

ELZONRIS is not only approved for BPDCN but is also being explored in other malignancies where targeting CD123 could provide therapeutic benefit. Key clinical milestones include:

  • BPDCN Maintenance Setting: A Phase 1/2 trial of ELZONRIS in patients with BPDCN in the maintenance setting post-stem cell transplant (SCT) has received regulatory authorization and is open for enrollment[1][2].
  • Other Indications: ELZONRIS is being investigated in Chronic Myelomonocytic Leukemia (CMML), Myelofibrosis (MF), and Acute Myeloid Leukemia (AML), with data readouts expected later in the year and into the next[1][2].

Regulatory Approvals and Expansion

In addition to its U.S. approval, ELZONRIS is under review by the European Medicines Agency (EMA) for potential approval in the European Union. This expansion is crucial for broadening the drug's market reach and patient access[1][2].

Financial Performance and Outlook

For the fourth quarter of 2019, Stemline Therapeutics reported a net loss of $17.7 million, with net cash expenditures of $10.1 million. However, the company ended the quarter with $164.4 million in cash, cash equivalents, and short-term investments. Research and development expenses decreased to $10.5 million, while selling, general, and administrative expenses increased to $16.5 million, primarily due to ongoing U.S. launch expenses and pre-launch costs for a potential EU approval[2].

Corporate Highlights and Future Outlook

Ivan Bergstein, CEO of Stemline Therapeutics, highlighted the transformative year of 2019 for the company, emphasizing the strong foundation created for future growth. The company is investing in multiple label expansion opportunities and advancing other pipeline products, including felezonexor (an XPO1 inhibitor) and SL-1001 (a RET kinase inhibitor)[1][2].

Competitive Landscape

The biologics market, particularly in oncology, is highly competitive. However, ELZONRIS's unique targeting of CD123 positions it favorably in the BPDCN market. As biosimilars begin to enter the market, the dynamics are shifting, but ELZONRIS's novelty and specific indication provide a competitive edge[3].

Key Takeaways

  • Revenue Growth: ELZONRIS generated $43.2 million in net revenues in its first year of commercialization.
  • Market Expansion: The drug is under review for EU approval and is being explored in additional indications.
  • Clinical Milestones: Ongoing trials in BPDCN maintenance setting and other malignancies.
  • Financial Outlook: Strong cash position despite net loss, with investments in label expansion and pipeline products.
  • Competitive Edge: Unique CD123 targeting in a niche market.

FAQs

What is ELZONRIS and what is it used for?

ELZONRIS (tagraxofusp) is a biologic drug approved for the treatment of Blastic Plasmacytoid Dendritic Cell Neoplasm (BPDCN), a rare and aggressive blood cancer.

How much revenue did ELZONRIS generate in its first year of commercialization?

ELZONRIS generated estimated net revenues of $43.2 million for the year-ended December 31, 2019.

What are the key clinical milestones for ELZONRIS?

Key milestones include a Phase 1/2 trial in BPDCN maintenance setting post-stem cell transplant and ongoing investigations in CMML, MF, and AML.

Is ELZONRIS approved in regions other than the U.S.?

ELZONRIS is currently under review by the European Medicines Agency (EMA) for potential approval in the European Union.

What is the projected growth rate of the BPDCN market?

The global BPDCN market is projected to grow at a CAGR of 7.7% from 2024 to 2030.

Sources

  1. Stemline Therapeutics Announces Preliminary 2019 Net Revenues for ELZONRISĀ® (tagraxofusp) and Highlights Commercial and Clinical Growth Drivers. Biospace.
  2. Stemline Therapeutics Reports Fourth Quarter 2019 Financial Results. Biospace.
  3. Biologics Market Dynamics: Setting the Stage for Biosimilars. FTC.
  4. Blastic Plasmacytoid Dendritic Cell Neoplasm Market Report, 2030. Grand View Research.

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